Implementation of new technical, technological and environmental solutions in the mining and metallurgical operations RBB and RBM

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Implementation of new technical, technological and environmental solutions in the mining and metallurgical operations RBB and RBM (en)
Имплементација савременијих техничко-технолошких и еколошких решења у постојећим производним системима Рудника Бакра Бор и Рудника Бакра Мајданпек (sr)
Implementacija savremenijih tehničko-tehnoloških i ekoloških rešenja u postojećim proizvodnim sistemima Rudnika Bakra Bor i Rudnika Bakra Majdanpek (sr_RS)
Authors

Publications

The effect of mechano-chemical activation and surface treatment of limestone filler on the properties of construction composites

Terzić, Anja; Radulović, Dragan; Pezo, Lato; Andrić, Ljubiša; Miličić, Ljiljana; Stojanović, Jovica; Grigorova, Irena

(Elsevier Sci Ltd, Oxford, 2017)

TY  - JOUR
AU  - Terzić, Anja
AU  - Radulović, Dragan
AU  - Pezo, Lato
AU  - Andrić, Ljubiša
AU  - Miličić, Ljiljana
AU  - Stojanović, Jovica
AU  - Grigorova, Irena
PY  - 2017
UR  - http://rims.institutims.rs/handle/123456789/322
AB  - The effect of the combined actions of milling and hydrophobization procedures applied in construction composites synthesis was investigated. The mortars were prepared with cement (CEM I 42.5) and calcite aggregate complying the standard 1:3 mix ratio. The limestone filler (10 wt%) was added to the mixture upon its mechano-chemical activation in an ultra-centrifugal mill. The activation variables (milling time, rotor velocity, sieve mesh size) were altered to achieve the optimal quality of the powder. The treatment was optimized via chemometric tools. The r(2) values (0.955-0.998) of second order polynomial models accurately predicted the output and the Standard score analysis chose the optimal activation parameters: 4.25 min; 48.58 m/s and 80 gm sieve. The selected filler and all three aggregate fractions were coated with stearic acid via dry procedure. The mortar mixes, prepared with uncoated (M1) and coated (M2) aggregate and filler, were cured for a period of 28 days during which compressive strength and water absorption were monitored. The dimensional changes in mortars were estimated via TMA dilatometer measurements. Thermo-analytical methods (DTA/TGA) were applied in the thermal behavior analysis. Mineralogical and morphological changes in the structure of hardened composite were detected by XRD and SEM, respectively. Limestone aggregate led to lower final compressive strengths in mortar, but it produced an infinitesimally small shrinkage at 1000 degrees C. The hydrophobization via stearic acid initiated the decrease in water absorption and formation of needle-like micro-network that filled structural voids reducing open porosity. The assessment of the effects of limestone utilization as a filler and as an aggregate on the mortar performances confirmed that this novel water-repellent composite is applicable in structural design.
PB  - Elsevier Sci Ltd, Oxford
T2  - Composites Part B-Engineering
T1  - The effect of mechano-chemical activation and surface treatment of limestone filler on the properties of construction composites
EP  - 73
SP  - 61
VL  - 117
DO  - 10.1016/j.compositesb.2017.02.041
ER  - 
@article{
author = "Terzić, Anja and Radulović, Dragan and Pezo, Lato and Andrić, Ljubiša and Miličić, Ljiljana and Stojanović, Jovica and Grigorova, Irena",
year = "2017",
abstract = "The effect of the combined actions of milling and hydrophobization procedures applied in construction composites synthesis was investigated. The mortars were prepared with cement (CEM I 42.5) and calcite aggregate complying the standard 1:3 mix ratio. The limestone filler (10 wt%) was added to the mixture upon its mechano-chemical activation in an ultra-centrifugal mill. The activation variables (milling time, rotor velocity, sieve mesh size) were altered to achieve the optimal quality of the powder. The treatment was optimized via chemometric tools. The r(2) values (0.955-0.998) of second order polynomial models accurately predicted the output and the Standard score analysis chose the optimal activation parameters: 4.25 min; 48.58 m/s and 80 gm sieve. The selected filler and all three aggregate fractions were coated with stearic acid via dry procedure. The mortar mixes, prepared with uncoated (M1) and coated (M2) aggregate and filler, were cured for a period of 28 days during which compressive strength and water absorption were monitored. The dimensional changes in mortars were estimated via TMA dilatometer measurements. Thermo-analytical methods (DTA/TGA) were applied in the thermal behavior analysis. Mineralogical and morphological changes in the structure of hardened composite were detected by XRD and SEM, respectively. Limestone aggregate led to lower final compressive strengths in mortar, but it produced an infinitesimally small shrinkage at 1000 degrees C. The hydrophobization via stearic acid initiated the decrease in water absorption and formation of needle-like micro-network that filled structural voids reducing open porosity. The assessment of the effects of limestone utilization as a filler and as an aggregate on the mortar performances confirmed that this novel water-repellent composite is applicable in structural design.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Composites Part B-Engineering",
title = "The effect of mechano-chemical activation and surface treatment of limestone filler on the properties of construction composites",
pages = "73-61",
volume = "117",
doi = "10.1016/j.compositesb.2017.02.041"
}
Terzić, A., Radulović, D., Pezo, L., Andrić, L., Miličić, L., Stojanović, J.,& Grigorova, I.. (2017). The effect of mechano-chemical activation and surface treatment of limestone filler on the properties of construction composites. in Composites Part B-Engineering
Elsevier Sci Ltd, Oxford., 117, 61-73.
https://doi.org/10.1016/j.compositesb.2017.02.041
Terzić A, Radulović D, Pezo L, Andrić L, Miličić L, Stojanović J, Grigorova I. The effect of mechano-chemical activation and surface treatment of limestone filler on the properties of construction composites. in Composites Part B-Engineering. 2017;117:61-73.
doi:10.1016/j.compositesb.2017.02.041 .
Terzić, Anja, Radulović, Dragan, Pezo, Lato, Andrić, Ljubiša, Miličić, Ljiljana, Stojanović, Jovica, Grigorova, Irena, "The effect of mechano-chemical activation and surface treatment of limestone filler on the properties of construction composites" in Composites Part B-Engineering, 117 (2017):61-73,
https://doi.org/10.1016/j.compositesb.2017.02.041 . .
11
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12

A Kinetic Study of Limestone Dry Micronization in an Ultra-Centrifugal Mill with Peripheral Comminuting Path

Radulović, Dragan; Božović, D.; Terzić, Anja; Trumić, M. S.; Simić, Vladimir; Andrić, Ljubiša

(Goller Verlag Gmbh, Baden Baden, 2017)

TY  - JOUR
AU  - Radulović, Dragan
AU  - Božović, D.
AU  - Terzić, Anja
AU  - Trumić, M. S.
AU  - Simić, Vladimir
AU  - Andrić, Ljubiša
PY  - 2017
UR  - http://rims.institutims.rs/handle/123456789/323
AB  - Because of its physico-mechanical and physico-chemical characteristics, fine-ground (i.e. micronized) limestone is widely applied in the production of new materials. Limestone can be used as a filler, coating and/or powder in ceramic composites. The effect of its fine micronization depends on the type of equipment used and on the disintegration process. In this study, the emphasis was placed on investigation of the kinetics of the dry micronization milling of limestone in a state-of-the-art ultra-centrifugal mill with a peripheral comminuting path. The efficiency of the ultra-centrifugal mill with a peripheral comminuting path was determined based on a detailed investigation of the limestone dry micronization, which satisfied all the requirements for technological parameters as well as for micronized product parameters. On the basis of the investigation of these parameters and theory of dry micronization conducted in a state-of-the-art mill with use of advanced instrumental techniques for determination and observation of the most significant physical and chemical characteristics, a kinetics model was developed to serve as the basis for quick and effective determination of micronization quality and efficiency. In this paper, the results of grinding in a Retsch ZM-1 ultra-centrifugal mill were analyzed in order to optimize and automate the process of ultrafine micronization.
PB  - Goller Verlag Gmbh, Baden Baden
T2  - Journal of Ceramic Science and Technology
T1  - A Kinetic Study of Limestone Dry Micronization in an Ultra-Centrifugal Mill with Peripheral Comminuting Path
EP  - 304
IS  - 2
SP  - 295
VL  - 8
DO  - 10.4416/JCST2017-00022
ER  - 
@article{
author = "Radulović, Dragan and Božović, D. and Terzić, Anja and Trumić, M. S. and Simić, Vladimir and Andrić, Ljubiša",
year = "2017",
abstract = "Because of its physico-mechanical and physico-chemical characteristics, fine-ground (i.e. micronized) limestone is widely applied in the production of new materials. Limestone can be used as a filler, coating and/or powder in ceramic composites. The effect of its fine micronization depends on the type of equipment used and on the disintegration process. In this study, the emphasis was placed on investigation of the kinetics of the dry micronization milling of limestone in a state-of-the-art ultra-centrifugal mill with a peripheral comminuting path. The efficiency of the ultra-centrifugal mill with a peripheral comminuting path was determined based on a detailed investigation of the limestone dry micronization, which satisfied all the requirements for technological parameters as well as for micronized product parameters. On the basis of the investigation of these parameters and theory of dry micronization conducted in a state-of-the-art mill with use of advanced instrumental techniques for determination and observation of the most significant physical and chemical characteristics, a kinetics model was developed to serve as the basis for quick and effective determination of micronization quality and efficiency. In this paper, the results of grinding in a Retsch ZM-1 ultra-centrifugal mill were analyzed in order to optimize and automate the process of ultrafine micronization.",
publisher = "Goller Verlag Gmbh, Baden Baden",
journal = "Journal of Ceramic Science and Technology",
title = "A Kinetic Study of Limestone Dry Micronization in an Ultra-Centrifugal Mill with Peripheral Comminuting Path",
pages = "304-295",
number = "2",
volume = "8",
doi = "10.4416/JCST2017-00022"
}
Radulović, D., Božović, D., Terzić, A., Trumić, M. S., Simić, V.,& Andrić, L.. (2017). A Kinetic Study of Limestone Dry Micronization in an Ultra-Centrifugal Mill with Peripheral Comminuting Path. in Journal of Ceramic Science and Technology
Goller Verlag Gmbh, Baden Baden., 8(2), 295-304.
https://doi.org/10.4416/JCST2017-00022
Radulović D, Božović D, Terzić A, Trumić MS, Simić V, Andrić L. A Kinetic Study of Limestone Dry Micronization in an Ultra-Centrifugal Mill with Peripheral Comminuting Path. in Journal of Ceramic Science and Technology. 2017;8(2):295-304.
doi:10.4416/JCST2017-00022 .
Radulović, Dragan, Božović, D., Terzić, Anja, Trumić, M. S., Simić, Vladimir, Andrić, Ljubiša, "A Kinetic Study of Limestone Dry Micronization in an Ultra-Centrifugal Mill with Peripheral Comminuting Path" in Journal of Ceramic Science and Technology, 8, no. 2 (2017):295-304,
https://doi.org/10.4416/JCST2017-00022 . .

Effects of mechanical activation on the parameters of talc quality for ceramics production - Chemometric approach

Terzić, Anja; Pezo, Lato; Andrić, Ljubiša; Arsenović, Milica

(Elsevier Sci Ltd, Oxford, 2015)

TY  - JOUR
AU  - Terzić, Anja
AU  - Pezo, Lato
AU  - Andrić, Ljubiša
AU  - Arsenović, Milica
PY  - 2015
UR  - http://rims.institutims.rs/handle/123456789/270
AB  - Talc is broadly used in the ceramic materials industry, either as a basic raw material, or as filler, due to its chemical inertia, fragmentation proneness, thermal stability, and refractoriness. The mechanical activation is frequently employed in the direct enhancement of talc properties, and thereby in the design of talc based composites with advanced performances. The differences in the set of the process parameters measured before and after talc activation via ultra-centrifugal mill Retsch ZM-1, and their influence on the grain-size distribution related characteristics have been investigated. The mechanical treatments are energetically unsustainable procedures, therefore the talc activation was optimized on basis of assessment of the process variables (number of rotor revolutions, current intensity, activation period, circumferential rotor speed and mill capacity) effect on the final quality of product parameters (mesh sizes, cumulative oversizes, average grain size, level of micronization kinetics, mesh size appropriate to 95% micronized product cumulative undersize and specific surface area). The activated product parameters in all experimental sequences were obtained by the analytical procedure based on Rosin-Rammler-Sperling equation. Response surface method, standard score analysis and principal component analysis were used as a means of the optimization. Developed models showed r(2) values in the range of 0.714-0.908 and they were able to accurately predict quality parameters in a wide range of process parameters. Standard score analysis highlighted that the optimal sample was obtained using sieve mesh of 120 mu m set of processing parameters (SS = 1.0). Multiple comparison tests revealed that the optimal variation in the processing parameters could reduce the negative effect of talc samples inherent properties on the final score and improve the activation procedure energetic and economic sustainability.
PB  - Elsevier Sci Ltd, Oxford
T2  - Composites Part B-Engineering
T1  - Effects of mechanical activation on the parameters of talc quality for ceramics production - Chemometric approach
EP  - 666
SP  - 660
VL  - 79
DO  - 10.1016/j.compositesb.2015.05.022
ER  - 
@article{
author = "Terzić, Anja and Pezo, Lato and Andrić, Ljubiša and Arsenović, Milica",
year = "2015",
abstract = "Talc is broadly used in the ceramic materials industry, either as a basic raw material, or as filler, due to its chemical inertia, fragmentation proneness, thermal stability, and refractoriness. The mechanical activation is frequently employed in the direct enhancement of talc properties, and thereby in the design of talc based composites with advanced performances. The differences in the set of the process parameters measured before and after talc activation via ultra-centrifugal mill Retsch ZM-1, and their influence on the grain-size distribution related characteristics have been investigated. The mechanical treatments are energetically unsustainable procedures, therefore the talc activation was optimized on basis of assessment of the process variables (number of rotor revolutions, current intensity, activation period, circumferential rotor speed and mill capacity) effect on the final quality of product parameters (mesh sizes, cumulative oversizes, average grain size, level of micronization kinetics, mesh size appropriate to 95% micronized product cumulative undersize and specific surface area). The activated product parameters in all experimental sequences were obtained by the analytical procedure based on Rosin-Rammler-Sperling equation. Response surface method, standard score analysis and principal component analysis were used as a means of the optimization. Developed models showed r(2) values in the range of 0.714-0.908 and they were able to accurately predict quality parameters in a wide range of process parameters. Standard score analysis highlighted that the optimal sample was obtained using sieve mesh of 120 mu m set of processing parameters (SS = 1.0). Multiple comparison tests revealed that the optimal variation in the processing parameters could reduce the negative effect of talc samples inherent properties on the final score and improve the activation procedure energetic and economic sustainability.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Composites Part B-Engineering",
title = "Effects of mechanical activation on the parameters of talc quality for ceramics production - Chemometric approach",
pages = "666-660",
volume = "79",
doi = "10.1016/j.compositesb.2015.05.022"
}
Terzić, A., Pezo, L., Andrić, L.,& Arsenović, M.. (2015). Effects of mechanical activation on the parameters of talc quality for ceramics production - Chemometric approach. in Composites Part B-Engineering
Elsevier Sci Ltd, Oxford., 79, 660-666.
https://doi.org/10.1016/j.compositesb.2015.05.022
Terzić A, Pezo L, Andrić L, Arsenović M. Effects of mechanical activation on the parameters of talc quality for ceramics production - Chemometric approach. in Composites Part B-Engineering. 2015;79:660-666.
doi:10.1016/j.compositesb.2015.05.022 .
Terzić, Anja, Pezo, Lato, Andrić, Ljubiša, Arsenović, Milica, "Effects of mechanical activation on the parameters of talc quality for ceramics production - Chemometric approach" in Composites Part B-Engineering, 79 (2015):660-666,
https://doi.org/10.1016/j.compositesb.2015.05.022 . .
15
14
16

Comparison of refractory coatings based on talc, cordierite, zircon and mullite fillers for lost-foam casting

Aćimović-Pavlović, Zagorka; Terzić, Anja; Andrić, Ljubiša; Pavlović, Marko

(Inst Za Kovinske Materiale I In Tehnologie, Ljubjana, 2015)

TY  - JOUR
AU  - Aćimović-Pavlović, Zagorka
AU  - Terzić, Anja
AU  - Andrić, Ljubiša
AU  - Pavlović, Marko
PY  - 2015
UR  - http://rims.institutims.rs/handle/123456789/277
AB  - This study presents the results of an investigation of high-temperature materials refractory coatings based on different refractory fillers including talc, cordierite, zircon and mullite applied in the lost-foam casting process. Design and optimization of a coating composition with controlled rheological properties and synthesis were achieved by applying different coating components, suspension agents and fillers and by altering the coating-production procedure. A morphological and microstructural analysis of the fillers was carried out with scanning electron microscopy. An X-ray diffraction analysis was applied to determine and monitor the phase-composition changes of the refractory fillers. The particle size and shape were assessed with the PC software application package OZARIA 2.5. To assess the effects of the applications of individual refractory coatings, a detailed investigation of the structural and mechanical properties of the mouldings obtained was performed. Highlight was placed on revealing and analyzing surface and volume defects present on the mouldings. Radiographic moulding tests were carried out with an X-ray device, SAIFORT type-S200. The attained results are essential for the synthesis of the refractory coatings based on high-temperature fillers and their applications in the lost-foam casting process for manufacturing the mouldings with in-advance-set properties.
PB  - Inst Za Kovinske Materiale I In Tehnologie, Ljubjana
T2  - Materiali in tehnologije
T1  - Comparison of refractory coatings based on talc, cordierite, zircon and mullite fillers for lost-foam casting
EP  - 164
IS  - 1
SP  - 157
VL  - 49
UR  - https://hdl.handle.net/21.15107/rcub_rims_277
ER  - 
@article{
author = "Aćimović-Pavlović, Zagorka and Terzić, Anja and Andrić, Ljubiša and Pavlović, Marko",
year = "2015",
abstract = "This study presents the results of an investigation of high-temperature materials refractory coatings based on different refractory fillers including talc, cordierite, zircon and mullite applied in the lost-foam casting process. Design and optimization of a coating composition with controlled rheological properties and synthesis were achieved by applying different coating components, suspension agents and fillers and by altering the coating-production procedure. A morphological and microstructural analysis of the fillers was carried out with scanning electron microscopy. An X-ray diffraction analysis was applied to determine and monitor the phase-composition changes of the refractory fillers. The particle size and shape were assessed with the PC software application package OZARIA 2.5. To assess the effects of the applications of individual refractory coatings, a detailed investigation of the structural and mechanical properties of the mouldings obtained was performed. Highlight was placed on revealing and analyzing surface and volume defects present on the mouldings. Radiographic moulding tests were carried out with an X-ray device, SAIFORT type-S200. The attained results are essential for the synthesis of the refractory coatings based on high-temperature fillers and their applications in the lost-foam casting process for manufacturing the mouldings with in-advance-set properties.",
publisher = "Inst Za Kovinske Materiale I In Tehnologie, Ljubjana",
journal = "Materiali in tehnologije",
title = "Comparison of refractory coatings based on talc, cordierite, zircon and mullite fillers for lost-foam casting",
pages = "164-157",
number = "1",
volume = "49",
url = "https://hdl.handle.net/21.15107/rcub_rims_277"
}
Aćimović-Pavlović, Z., Terzić, A., Andrić, L.,& Pavlović, M.. (2015). Comparison of refractory coatings based on talc, cordierite, zircon and mullite fillers for lost-foam casting. in Materiali in tehnologije
Inst Za Kovinske Materiale I In Tehnologie, Ljubjana., 49(1), 157-164.
https://hdl.handle.net/21.15107/rcub_rims_277
Aćimović-Pavlović Z, Terzić A, Andrić L, Pavlović M. Comparison of refractory coatings based on talc, cordierite, zircon and mullite fillers for lost-foam casting. in Materiali in tehnologije. 2015;49(1):157-164.
https://hdl.handle.net/21.15107/rcub_rims_277 .
Aćimović-Pavlović, Zagorka, Terzić, Anja, Andrić, Ljubiša, Pavlović, Marko, "Comparison of refractory coatings based on talc, cordierite, zircon and mullite fillers for lost-foam casting" in Materiali in tehnologije, 49, no. 1 (2015):157-164,
https://hdl.handle.net/21.15107/rcub_rims_277 .
1
3

Chemometric analysis of the influence of mechanical activation on the mica quality parameters

Terzić, Anja; Pezo, Lato; Andrić, Ljubiša

(Elsevier Sci Ltd, Oxford, 2015)

TY  - JOUR
AU  - Terzić, Anja
AU  - Pezo, Lato
AU  - Andrić, Ljubiša
PY  - 2015
UR  - http://rims.institutims.rs/handle/123456789/274
AB  - The differences in the set of the process parameters measured before and after mica mechanical activation and their influence on the grain size distribution related characteristics have been studied. The modification of the behavior for activated samples has been correlated to the particle size distribution effect produced by activation via an ultra centrifugal mill. The mechanical treatments are energetically and economically unsustainable procedures, therefore the mica activation was optimized on basis of assessment of the process variables effect on the final quality of product parameters. Response surface method, standard score analysis and principal component analysis were used as means of the optimization. Developed models showed r(2) values in the range of 0.816-0.988 and they were able to accurately, predict quality parameters in a wide range of processing parameters. Standard score analysis highlighted that the optimal sample was obtained using sieve mesh of 80 mu m set of processing parameters (SS=0.81). Multiple comparison tests revealed that the optimal variation in the processing parameters could reduce the negative effect of mica samples inherent properties on the final score and improve activation procedure energetic and economic sustainability.
PB  - Elsevier Sci Ltd, Oxford
T2  - Ceramics International
T1  - Chemometric analysis of the influence of mechanical activation on the mica quality parameters
EP  - 8903
IS  - 7
SP  - 8894
VL  - 41
DO  - 10.1016/j.ceramint.2015.03.147
ER  - 
@article{
author = "Terzić, Anja and Pezo, Lato and Andrić, Ljubiša",
year = "2015",
abstract = "The differences in the set of the process parameters measured before and after mica mechanical activation and their influence on the grain size distribution related characteristics have been studied. The modification of the behavior for activated samples has been correlated to the particle size distribution effect produced by activation via an ultra centrifugal mill. The mechanical treatments are energetically and economically unsustainable procedures, therefore the mica activation was optimized on basis of assessment of the process variables effect on the final quality of product parameters. Response surface method, standard score analysis and principal component analysis were used as means of the optimization. Developed models showed r(2) values in the range of 0.816-0.988 and they were able to accurately, predict quality parameters in a wide range of processing parameters. Standard score analysis highlighted that the optimal sample was obtained using sieve mesh of 80 mu m set of processing parameters (SS=0.81). Multiple comparison tests revealed that the optimal variation in the processing parameters could reduce the negative effect of mica samples inherent properties on the final score and improve activation procedure energetic and economic sustainability.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Ceramics International",
title = "Chemometric analysis of the influence of mechanical activation on the mica quality parameters",
pages = "8903-8894",
number = "7",
volume = "41",
doi = "10.1016/j.ceramint.2015.03.147"
}
Terzić, A., Pezo, L.,& Andrić, L.. (2015). Chemometric analysis of the influence of mechanical activation on the mica quality parameters. in Ceramics International
Elsevier Sci Ltd, Oxford., 41(7), 8894-8903.
https://doi.org/10.1016/j.ceramint.2015.03.147
Terzić A, Pezo L, Andrić L. Chemometric analysis of the influence of mechanical activation on the mica quality parameters. in Ceramics International. 2015;41(7):8894-8903.
doi:10.1016/j.ceramint.2015.03.147 .
Terzić, Anja, Pezo, Lato, Andrić, Ljubiša, "Chemometric analysis of the influence of mechanical activation on the mica quality parameters" in Ceramics International, 41, no. 7 (2015):8894-8903,
https://doi.org/10.1016/j.ceramint.2015.03.147 . .
12
9
12

Analytical modeling of activation procedure applied in alpha-alumina thermo-mechanical synthesis

Terzić, Anja; Pezo, Lato; Andrić, Ljubiša; Mitić, Vojislav

(Elsevier Sci Ltd, Oxford, 2015)

TY  - JOUR
AU  - Terzić, Anja
AU  - Pezo, Lato
AU  - Andrić, Ljubiša
AU  - Mitić, Vojislav
PY  - 2015
UR  - http://rims.institutims.rs/handle/123456789/271
AB  - The impact of the mechanical processing parameters on the alumina grain-size distribution affiliated characteristics and on the gamma to alpha phase transformation rate was investigated. The moderation in the alumina samples behavior has been correlated to the granulometric and mineralogical changes induced by activation via an ultra-centrifugal mill. The assessment of the activation process variables influence on the final quality of the product parameters was conveyed in order to optimize the mechanical treatment of the alumina, which otherwise could be regarded as either energetically or economically unsustainable procedure. The Response Surface Method, Standard Score Analysis and Principal Component Analysis were applied as means of the mechanical activation optimization. The r(2) values obtained by developed models were in range from 0.816 to 0.988. The established mathematical models were able to precisely predict the quality parameters in a broad range of processing parameters. The Standard Score Analysis emphasized that the optimal output sample was obtained using a sieve mesh of 120 mu m set of processing parameters (SS=0.96). Diverse comparison analyses disclosed that the optimal set of activation process parameters could reduce the negative effect of gamma-alumina samples immanent properties on the final score, and furthermore to enhance the rate of gamma to alpha transition which would improve energetic and economic sustainability of the alumina phase transformation procedure.
PB  - Elsevier Sci Ltd, Oxford
T2  - Ceramics International
T1  - Analytical modeling of activation procedure applied in alpha-alumina thermo-mechanical synthesis
EP  - 11917
IS  - 9
SP  - 11908
VL  - 41
DO  - 10.1016/j.ceramint.2015.05.158
ER  - 
@article{
author = "Terzić, Anja and Pezo, Lato and Andrić, Ljubiša and Mitić, Vojislav",
year = "2015",
abstract = "The impact of the mechanical processing parameters on the alumina grain-size distribution affiliated characteristics and on the gamma to alpha phase transformation rate was investigated. The moderation in the alumina samples behavior has been correlated to the granulometric and mineralogical changes induced by activation via an ultra-centrifugal mill. The assessment of the activation process variables influence on the final quality of the product parameters was conveyed in order to optimize the mechanical treatment of the alumina, which otherwise could be regarded as either energetically or economically unsustainable procedure. The Response Surface Method, Standard Score Analysis and Principal Component Analysis were applied as means of the mechanical activation optimization. The r(2) values obtained by developed models were in range from 0.816 to 0.988. The established mathematical models were able to precisely predict the quality parameters in a broad range of processing parameters. The Standard Score Analysis emphasized that the optimal output sample was obtained using a sieve mesh of 120 mu m set of processing parameters (SS=0.96). Diverse comparison analyses disclosed that the optimal set of activation process parameters could reduce the negative effect of gamma-alumina samples immanent properties on the final score, and furthermore to enhance the rate of gamma to alpha transition which would improve energetic and economic sustainability of the alumina phase transformation procedure.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Ceramics International",
title = "Analytical modeling of activation procedure applied in alpha-alumina thermo-mechanical synthesis",
pages = "11917-11908",
number = "9",
volume = "41",
doi = "10.1016/j.ceramint.2015.05.158"
}
Terzić, A., Pezo, L., Andrić, L.,& Mitić, V.. (2015). Analytical modeling of activation procedure applied in alpha-alumina thermo-mechanical synthesis. in Ceramics International
Elsevier Sci Ltd, Oxford., 41(9), 11908-11917.
https://doi.org/10.1016/j.ceramint.2015.05.158
Terzić A, Pezo L, Andrić L, Mitić V. Analytical modeling of activation procedure applied in alpha-alumina thermo-mechanical synthesis. in Ceramics International. 2015;41(9):11908-11917.
doi:10.1016/j.ceramint.2015.05.158 .
Terzić, Anja, Pezo, Lato, Andrić, Ljubiša, Mitić, Vojislav, "Analytical modeling of activation procedure applied in alpha-alumina thermo-mechanical synthesis" in Ceramics International, 41, no. 9 (2015):11908-11917,
https://doi.org/10.1016/j.ceramint.2015.05.158 . .
10
7
10

Energy conversion in phosphate ore grain mixture activated via ultra-centrifugal mill

Andrić, Ljubiša; Terzić, Anja; Petrov, Milan; Stojanović, Jovica; Kostović, Milena

(Elsevier, Amsterdam, 2015)

TY  - JOUR
AU  - Andrić, Ljubiša
AU  - Terzić, Anja
AU  - Petrov, Milan
AU  - Stojanović, Jovica
AU  - Kostović, Milena
PY  - 2015
UR  - http://rims.institutims.rs/handle/123456789/272
AB  - The aim of this investigation was to establish the optimal processing parameters of the comminuted phosphate grain mixture mechanical treatment by monitoring and evaluating the activated product characteristics. An ultra-centrifugal mill with a peripheral comminuting path was used as activator in the experiment. A mathematical model based on the theoretical principles of the grain mixture mechanical processing was applied in order to characterize the phosphate activation procedure. As the energy conversion that takes place by the interaction mill-material during activation is recorded on the processed phosphate grains, the increase in potential energy of the activated grains was measured by means of an automatic grain counter. Following the operating hypothesis of the automatic grain counter, the energy conversion and the properties of phosphate grains induced by mechanical force were monitored and expressed in the form of the grain inertia change. The phosphate ore grain mixture used in the experiment was thoroughly analyzed, particularly in its activated state. Analytically obtained results were supported by X-ray diffraction analysis for identification of crystalline phases and change in crystallinity, and SEM microphotography of initial and activated phosphate grains. Diverse comparison analyses disclosed that the optimal set of activation process parameters could reduce the negative effect of phosphate sample immanent properties on the final score and furthermore enhance the material reactivity.
PB  - Elsevier, Amsterdam
T2  - International Journal of Mineral Processing
T1  - Energy conversion in phosphate ore grain mixture activated via ultra-centrifugal mill
EP  - 11
SP  - 1
VL  - 143
DO  - 10.1016/j.minpro.2015.08.005
ER  - 
@article{
author = "Andrić, Ljubiša and Terzić, Anja and Petrov, Milan and Stojanović, Jovica and Kostović, Milena",
year = "2015",
abstract = "The aim of this investigation was to establish the optimal processing parameters of the comminuted phosphate grain mixture mechanical treatment by monitoring and evaluating the activated product characteristics. An ultra-centrifugal mill with a peripheral comminuting path was used as activator in the experiment. A mathematical model based on the theoretical principles of the grain mixture mechanical processing was applied in order to characterize the phosphate activation procedure. As the energy conversion that takes place by the interaction mill-material during activation is recorded on the processed phosphate grains, the increase in potential energy of the activated grains was measured by means of an automatic grain counter. Following the operating hypothesis of the automatic grain counter, the energy conversion and the properties of phosphate grains induced by mechanical force were monitored and expressed in the form of the grain inertia change. The phosphate ore grain mixture used in the experiment was thoroughly analyzed, particularly in its activated state. Analytically obtained results were supported by X-ray diffraction analysis for identification of crystalline phases and change in crystallinity, and SEM microphotography of initial and activated phosphate grains. Diverse comparison analyses disclosed that the optimal set of activation process parameters could reduce the negative effect of phosphate sample immanent properties on the final score and furthermore enhance the material reactivity.",
publisher = "Elsevier, Amsterdam",
journal = "International Journal of Mineral Processing",
title = "Energy conversion in phosphate ore grain mixture activated via ultra-centrifugal mill",
pages = "11-1",
volume = "143",
doi = "10.1016/j.minpro.2015.08.005"
}
Andrić, L., Terzić, A., Petrov, M., Stojanović, J.,& Kostović, M.. (2015). Energy conversion in phosphate ore grain mixture activated via ultra-centrifugal mill. in International Journal of Mineral Processing
Elsevier, Amsterdam., 143, 1-11.
https://doi.org/10.1016/j.minpro.2015.08.005
Andrić L, Terzić A, Petrov M, Stojanović J, Kostović M. Energy conversion in phosphate ore grain mixture activated via ultra-centrifugal mill. in International Journal of Mineral Processing. 2015;143:1-11.
doi:10.1016/j.minpro.2015.08.005 .
Andrić, Ljubiša, Terzić, Anja, Petrov, Milan, Stojanović, Jovica, Kostović, Milena, "Energy conversion in phosphate ore grain mixture activated via ultra-centrifugal mill" in International Journal of Mineral Processing, 143 (2015):1-11,
https://doi.org/10.1016/j.minpro.2015.08.005 . .
7
5
6

Mechanical Activation as Sintering Pre-treatment of Talc for Steatite Ceramics

Terzić, Anja; Andrić, Ljubiša; Stojanović, Jovica; Obradović, Nina; Kostović, Milena

(Međunarodni Institut za nauku o sinterovanju, Beograd, 2014)

TY  - JOUR
AU  - Terzić, Anja
AU  - Andrić, Ljubiša
AU  - Stojanović, Jovica
AU  - Obradović, Nina
AU  - Kostović, Milena
PY  - 2014
UR  - http://rims.institutims.rs/handle/123456789/236
AB  - The effect of vibratory mill induced mechanical activation on the change of the particle size, crystallinity and the phase transformations of the minerals present in the activated material, was studied with the purpose of decreasing of the sintering temperature of talc (Mg3Si4O10(OH)(2)) as raw material which is the basic component of the steatite ceramics. The aims of the conducted investigation were, also, increasing of the reactivity of the comminuted raw material and establishing of the optimal activation period. The properties of the activated talc induced by mechanical force were expressed in form of the grain inertia change which was measured by means of automatic grain counter. Mechanically activated grains are the most convenient mineral form for physical concentration since the energy change of the mill-material system is recorded on them. The effect of dry grinding on the structure, particle size and shape of talc was studied by means of XRD, DTA and SEM/EDS methods. Activation of talc produced an increase of the starting surface area value progressively from 4.5 m(2)/g up to a maximum of 108.5 m(2)/g achieved at 30 min. A subsequent decrease of rate of surface area change and the rate of size reduction were observed following the prolonged grinding. Talc activated in vibratory mill for optimal 30 min showed properties which positively influence the decrease of sintering temperature and the increase of the sintering rate of steatite ceramics.
PB  - Međunarodni Institut za nauku o sinterovanju, Beograd
T2  - Science of Sintering
T1  - Mechanical Activation as Sintering Pre-treatment of Talc for Steatite Ceramics
EP  - 258
IS  - 2
SP  - 247
VL  - 46
DO  - 10.2298/SOS1402247T
ER  - 
@article{
author = "Terzić, Anja and Andrić, Ljubiša and Stojanović, Jovica and Obradović, Nina and Kostović, Milena",
year = "2014",
abstract = "The effect of vibratory mill induced mechanical activation on the change of the particle size, crystallinity and the phase transformations of the minerals present in the activated material, was studied with the purpose of decreasing of the sintering temperature of talc (Mg3Si4O10(OH)(2)) as raw material which is the basic component of the steatite ceramics. The aims of the conducted investigation were, also, increasing of the reactivity of the comminuted raw material and establishing of the optimal activation period. The properties of the activated talc induced by mechanical force were expressed in form of the grain inertia change which was measured by means of automatic grain counter. Mechanically activated grains are the most convenient mineral form for physical concentration since the energy change of the mill-material system is recorded on them. The effect of dry grinding on the structure, particle size and shape of talc was studied by means of XRD, DTA and SEM/EDS methods. Activation of talc produced an increase of the starting surface area value progressively from 4.5 m(2)/g up to a maximum of 108.5 m(2)/g achieved at 30 min. A subsequent decrease of rate of surface area change and the rate of size reduction were observed following the prolonged grinding. Talc activated in vibratory mill for optimal 30 min showed properties which positively influence the decrease of sintering temperature and the increase of the sintering rate of steatite ceramics.",
publisher = "Međunarodni Institut za nauku o sinterovanju, Beograd",
journal = "Science of Sintering",
title = "Mechanical Activation as Sintering Pre-treatment of Talc for Steatite Ceramics",
pages = "258-247",
number = "2",
volume = "46",
doi = "10.2298/SOS1402247T"
}
Terzić, A., Andrić, L., Stojanović, J., Obradović, N.,& Kostović, M.. (2014). Mechanical Activation as Sintering Pre-treatment of Talc for Steatite Ceramics. in Science of Sintering
Međunarodni Institut za nauku o sinterovanju, Beograd., 46(2), 247-258.
https://doi.org/10.2298/SOS1402247T
Terzić A, Andrić L, Stojanović J, Obradović N, Kostović M. Mechanical Activation as Sintering Pre-treatment of Talc for Steatite Ceramics. in Science of Sintering. 2014;46(2):247-258.
doi:10.2298/SOS1402247T .
Terzić, Anja, Andrić, Ljubiša, Stojanović, Jovica, Obradović, Nina, Kostović, Milena, "Mechanical Activation as Sintering Pre-treatment of Talc for Steatite Ceramics" in Science of Sintering, 46, no. 2 (2014):247-258,
https://doi.org/10.2298/SOS1402247T . .
8
6
11

Synthesis and characterization of new refractory coatings based on talc, cordierite, zircon and mullite fillers for lost foam casting process

Prstić, Aurel; Aćimović-Pavlović, Zagorka; Terzić, Anja; Pavlović, Ljubica

(Polska Akad Nauk, Polish Acad Sciences, Inst Metall & Mater Sci Pas, Warszawa, 2014)

TY  - JOUR
AU  - Prstić, Aurel
AU  - Aćimović-Pavlović, Zagorka
AU  - Terzić, Anja
AU  - Pavlović, Ljubica
PY  - 2014
UR  - http://rims.institutims.rs/handle/123456789/258
AB  - Refractory coatings based on different refractory fillers (talc, cordierite, zircon and mullite) for application in Lost Foam casting process were investigated. Design and optimization of the coatings composition with controlled, rheological properties included, and consequently synthesis were achieved by application of different coating components, namely different suspension agents and fillers and by alteration of the coating production procedure. Morphologic and microstructural analysis of fillers was carried out by means of scanning electronic microscope. X-ray diffraction analysis by means of X-ray diffractometer was applied in determination and monitoring the phase composition changes of the refractory fillers. An analysis of the particle size and shape was carried out by means of the PC software application package OZARIA 2.5. To assess the effects of application of individual refractory coatings, a detailed investigation of structural and mechanical properties of the moldings obtained was performed. Highlight was placed on revealing and analyzing surface and volume defects present on moldings. Radiographic molding tests were carried out by means of the X-ray device SAIFORT type-S200. Attained results are essential for the synthesis of refractory coatings based on high-temperature fillers and their applications in Lost Foam casting process for manufacturing of moldings with in-advance-set properties.
PB  - Polska Akad Nauk, Polish Acad Sciences, Inst Metall & Mater Sci Pas, Warszawa
T2  - Archives of Metallurgy and Materials
T1  - Synthesis and characterization of new refractory coatings based on talc, cordierite, zircon and mullite fillers for lost foam casting process
EP  - 95
IS  - 1
SP  - 89
VL  - 59
DO  - 10.2478/amm-2014-0015
ER  - 
@article{
author = "Prstić, Aurel and Aćimović-Pavlović, Zagorka and Terzić, Anja and Pavlović, Ljubica",
year = "2014",
abstract = "Refractory coatings based on different refractory fillers (talc, cordierite, zircon and mullite) for application in Lost Foam casting process were investigated. Design and optimization of the coatings composition with controlled, rheological properties included, and consequently synthesis were achieved by application of different coating components, namely different suspension agents and fillers and by alteration of the coating production procedure. Morphologic and microstructural analysis of fillers was carried out by means of scanning electronic microscope. X-ray diffraction analysis by means of X-ray diffractometer was applied in determination and monitoring the phase composition changes of the refractory fillers. An analysis of the particle size and shape was carried out by means of the PC software application package OZARIA 2.5. To assess the effects of application of individual refractory coatings, a detailed investigation of structural and mechanical properties of the moldings obtained was performed. Highlight was placed on revealing and analyzing surface and volume defects present on moldings. Radiographic molding tests were carried out by means of the X-ray device SAIFORT type-S200. Attained results are essential for the synthesis of refractory coatings based on high-temperature fillers and their applications in Lost Foam casting process for manufacturing of moldings with in-advance-set properties.",
publisher = "Polska Akad Nauk, Polish Acad Sciences, Inst Metall & Mater Sci Pas, Warszawa",
journal = "Archives of Metallurgy and Materials",
title = "Synthesis and characterization of new refractory coatings based on talc, cordierite, zircon and mullite fillers for lost foam casting process",
pages = "95-89",
number = "1",
volume = "59",
doi = "10.2478/amm-2014-0015"
}
Prstić, A., Aćimović-Pavlović, Z., Terzić, A.,& Pavlović, L.. (2014). Synthesis and characterization of new refractory coatings based on talc, cordierite, zircon and mullite fillers for lost foam casting process. in Archives of Metallurgy and Materials
Polska Akad Nauk, Polish Acad Sciences, Inst Metall & Mater Sci Pas, Warszawa., 59(1), 89-95.
https://doi.org/10.2478/amm-2014-0015
Prstić A, Aćimović-Pavlović Z, Terzić A, Pavlović L. Synthesis and characterization of new refractory coatings based on talc, cordierite, zircon and mullite fillers for lost foam casting process. in Archives of Metallurgy and Materials. 2014;59(1):89-95.
doi:10.2478/amm-2014-0015 .
Prstić, Aurel, Aćimović-Pavlović, Zagorka, Terzić, Anja, Pavlović, Ljubica, "Synthesis and characterization of new refractory coatings based on talc, cordierite, zircon and mullite fillers for lost foam casting process" in Archives of Metallurgy and Materials, 59, no. 1 (2014):89-95,
https://doi.org/10.2478/amm-2014-0015 . .
5
1
2

Comparative analysis of process parameters of talc mechanical activation in centrifugal and attrition mill

Andrić, Ljubiša; Terzić, Anja; Aćimović-Pavlović, Zagorka; Pavlović, Ljubica; Petrov, Milan

(Oficyna Wydawnicza Politechniki Wroclawskiej, Wroclaw, 2014)

TY  - JOUR
AU  - Andrić, Ljubiša
AU  - Terzić, Anja
AU  - Aćimović-Pavlović, Zagorka
AU  - Pavlović, Ljubica
AU  - Petrov, Milan
PY  - 2014
UR  - http://rims.institutims.rs/handle/123456789/257
AB  - The efficiency of talc mechanical activation by means of two different mechano-activators centrifugal and attrition mill is investigated in this study and the comparative analysis of the characteristics of obtained talc powders is presented. A new approach for obtaining high-grade talc concentrate with low Fe2O3 content is achieved through effect of mechanical activation of talc accompanied by hydrometallurgical process. The applied mechanical activation process conditions of ultra-centrifugal mill were defined by number of rotor revolutions, sieve mesh size, and current intensity. These operating parameters of the ultra-centrifugal mill were variable. Ultra fine grinding of talc in attrition mill (attritor) was carried out in various time intervals - from 5 to 15 min. The following technological parameters of the mechanical activation were monitored: time of mechanical activation, circumferential rotor speed, capacity of ultra-centrifugal mill, and specific energy consumption. The investigation was based on a kinetic model. The structure and behavior of activated samples were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD) analysis, and differential thermal analysis (DTA).
PB  - Oficyna Wydawnicza Politechniki Wroclawskiej, Wroclaw
T2  - Physicochemical Problems of Mineral Processing
T1  - Comparative analysis of process parameters of talc mechanical activation in centrifugal and attrition mill
EP  - 452
IS  - 2
SP  - 433
VL  - 50
DO  - 10.5277/ppmp140202
ER  - 
@article{
author = "Andrić, Ljubiša and Terzić, Anja and Aćimović-Pavlović, Zagorka and Pavlović, Ljubica and Petrov, Milan",
year = "2014",
abstract = "The efficiency of talc mechanical activation by means of two different mechano-activators centrifugal and attrition mill is investigated in this study and the comparative analysis of the characteristics of obtained talc powders is presented. A new approach for obtaining high-grade talc concentrate with low Fe2O3 content is achieved through effect of mechanical activation of talc accompanied by hydrometallurgical process. The applied mechanical activation process conditions of ultra-centrifugal mill were defined by number of rotor revolutions, sieve mesh size, and current intensity. These operating parameters of the ultra-centrifugal mill were variable. Ultra fine grinding of talc in attrition mill (attritor) was carried out in various time intervals - from 5 to 15 min. The following technological parameters of the mechanical activation were monitored: time of mechanical activation, circumferential rotor speed, capacity of ultra-centrifugal mill, and specific energy consumption. The investigation was based on a kinetic model. The structure and behavior of activated samples were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD) analysis, and differential thermal analysis (DTA).",
publisher = "Oficyna Wydawnicza Politechniki Wroclawskiej, Wroclaw",
journal = "Physicochemical Problems of Mineral Processing",
title = "Comparative analysis of process parameters of talc mechanical activation in centrifugal and attrition mill",
pages = "452-433",
number = "2",
volume = "50",
doi = "10.5277/ppmp140202"
}
Andrić, L., Terzić, A., Aćimović-Pavlović, Z., Pavlović, L.,& Petrov, M.. (2014). Comparative analysis of process parameters of talc mechanical activation in centrifugal and attrition mill. in Physicochemical Problems of Mineral Processing
Oficyna Wydawnicza Politechniki Wroclawskiej, Wroclaw., 50(2), 433-452.
https://doi.org/10.5277/ppmp140202
Andrić L, Terzić A, Aćimović-Pavlović Z, Pavlović L, Petrov M. Comparative analysis of process parameters of talc mechanical activation in centrifugal and attrition mill. in Physicochemical Problems of Mineral Processing. 2014;50(2):433-452.
doi:10.5277/ppmp140202 .
Andrić, Ljubiša, Terzić, Anja, Aćimović-Pavlović, Zagorka, Pavlović, Ljubica, Petrov, Milan, "Comparative analysis of process parameters of talc mechanical activation in centrifugal and attrition mill" in Physicochemical Problems of Mineral Processing, 50, no. 2 (2014):433-452,
https://doi.org/10.5277/ppmp140202 . .
9
12

Comparative kinetic study of mechanical activation process of mica and talc for industrial application

Andrić, Ljubiša; Terzić, Anja; Aćimović-Pavlović, Zagorka; Pavlović, Ljubica; Petrov, Milan

(Elsevier Sci Ltd, Oxford, 2014)

TY  - JOUR
AU  - Andrić, Ljubiša
AU  - Terzić, Anja
AU  - Aćimović-Pavlović, Zagorka
AU  - Pavlović, Ljubica
AU  - Petrov, Milan
PY  - 2014
UR  - http://rims.institutims.rs/handle/123456789/255
AB  - Mica and talc have wide areas of application as a raw material in a number of industrial branches. Mechanically activated mica has specific applications such as: capacitors, insulators, and pearlescent pigments. Talc is widely used as either a basic raw material or as filler. This paper presents a comparative analysis of mechanically activated samples of mica and talc in ultra-centrifugal mechano-activator "Retsch ZM-1". The following mechano-activator parameters were variable: number of rotor revolutions (rpm); sieve mesh size (mu m); current intensity (A). In addition, the following parameters were monitored: duration of mechanical activation, t (min); circumferential rotor speed, v (m/s); capacity of mechano-activator, Q (kg/h); and specific energy consumption, W-e (kW h/t). It was observed that effect of mechanical activation of mica and talc increased with an increase of the load and rotor revolution of ultra-centrifugal mechano-activator. Both mica and talc were successfully treated by mechanical activation procedure. In the processing of mica, mechanical activation is suggested to be applied as a post-treatment, and in the talc processing as a pre-treatment, as the high quality talc is obtained by means of hydrometallurgical concentration method.
PB  - Elsevier Sci Ltd, Oxford
T2  - Composites Part B-Engineering
T1  - Comparative kinetic study of mechanical activation process of mica and talc for industrial application
EP  - 190
SP  - 181
VL  - 59
DO  - 10.1016/j.compositesb.2013.12.003
ER  - 
@article{
author = "Andrić, Ljubiša and Terzić, Anja and Aćimović-Pavlović, Zagorka and Pavlović, Ljubica and Petrov, Milan",
year = "2014",
abstract = "Mica and talc have wide areas of application as a raw material in a number of industrial branches. Mechanically activated mica has specific applications such as: capacitors, insulators, and pearlescent pigments. Talc is widely used as either a basic raw material or as filler. This paper presents a comparative analysis of mechanically activated samples of mica and talc in ultra-centrifugal mechano-activator "Retsch ZM-1". The following mechano-activator parameters were variable: number of rotor revolutions (rpm); sieve mesh size (mu m); current intensity (A). In addition, the following parameters were monitored: duration of mechanical activation, t (min); circumferential rotor speed, v (m/s); capacity of mechano-activator, Q (kg/h); and specific energy consumption, W-e (kW h/t). It was observed that effect of mechanical activation of mica and talc increased with an increase of the load and rotor revolution of ultra-centrifugal mechano-activator. Both mica and talc were successfully treated by mechanical activation procedure. In the processing of mica, mechanical activation is suggested to be applied as a post-treatment, and in the talc processing as a pre-treatment, as the high quality talc is obtained by means of hydrometallurgical concentration method.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Composites Part B-Engineering",
title = "Comparative kinetic study of mechanical activation process of mica and talc for industrial application",
pages = "190-181",
volume = "59",
doi = "10.1016/j.compositesb.2013.12.003"
}
Andrić, L., Terzić, A., Aćimović-Pavlović, Z., Pavlović, L.,& Petrov, M.. (2014). Comparative kinetic study of mechanical activation process of mica and talc for industrial application. in Composites Part B-Engineering
Elsevier Sci Ltd, Oxford., 59, 181-190.
https://doi.org/10.1016/j.compositesb.2013.12.003
Andrić L, Terzić A, Aćimović-Pavlović Z, Pavlović L, Petrov M. Comparative kinetic study of mechanical activation process of mica and talc for industrial application. in Composites Part B-Engineering. 2014;59:181-190.
doi:10.1016/j.compositesb.2013.12.003 .
Andrić, Ljubiša, Terzić, Anja, Aćimović-Pavlović, Zagorka, Pavlović, Ljubica, Petrov, Milan, "Comparative kinetic study of mechanical activation process of mica and talc for industrial application" in Composites Part B-Engineering, 59 (2014):181-190,
https://doi.org/10.1016/j.compositesb.2013.12.003 . .
26
20
27

Development of New Cordierite-Based Refractory Coatings for Casting Applications

Prstić, Aurel; Aćimović-Pavlović, Zagorka; Terzić, Anja; Pavlović, Ljubica; Grujić, Snezana

(Wiley, Hoboken, 2014)

TY  - JOUR
AU  - Prstić, Aurel
AU  - Aćimović-Pavlović, Zagorka
AU  - Terzić, Anja
AU  - Pavlović, Ljubica
AU  - Grujić, Snezana
PY  - 2014
UR  - http://rims.institutims.rs/handle/123456789/250
AB  - In this study, new refractory coatings based on synthesized cordierite for the casting applications were developed. The investigation included starting raw materials characterization, synthesis of the cordierite, design of the refractory coating as final product, and its application testing. The obtained results pointed out that coating suspension sediment stability was crucial quality parameter. Design and optimization of the coatings composition, with controlled rheological properties included, were achieved by application of different coating components, namely different suspension agents and by alteration of the coating production procedure. Cordierite, used as filler, was obtained by means of synthesis in the solid-state reaction on the basis of talc, kaolin, and alumina. The investigation showed that the application of these particular types of water/alcohol-based coatings has positive influence on surface quality and structural and mechanical properties of the castings of aluminum alloys obtained by casting into sand molds by means of evaporable models method, that is, evaporate pattern casting process.
PB  - Wiley, Hoboken
T2  - International Journal of Applied Ceramic Technology
T1  - Development of New Cordierite-Based Refractory Coatings for Casting Applications
EP  - 331
IS  - 2
SP  - 321
VL  - 11
DO  - 10.1111/ijac.12010
ER  - 
@article{
author = "Prstić, Aurel and Aćimović-Pavlović, Zagorka and Terzić, Anja and Pavlović, Ljubica and Grujić, Snezana",
year = "2014",
abstract = "In this study, new refractory coatings based on synthesized cordierite for the casting applications were developed. The investigation included starting raw materials characterization, synthesis of the cordierite, design of the refractory coating as final product, and its application testing. The obtained results pointed out that coating suspension sediment stability was crucial quality parameter. Design and optimization of the coatings composition, with controlled rheological properties included, were achieved by application of different coating components, namely different suspension agents and by alteration of the coating production procedure. Cordierite, used as filler, was obtained by means of synthesis in the solid-state reaction on the basis of talc, kaolin, and alumina. The investigation showed that the application of these particular types of water/alcohol-based coatings has positive influence on surface quality and structural and mechanical properties of the castings of aluminum alloys obtained by casting into sand molds by means of evaporable models method, that is, evaporate pattern casting process.",
publisher = "Wiley, Hoboken",
journal = "International Journal of Applied Ceramic Technology",
title = "Development of New Cordierite-Based Refractory Coatings for Casting Applications",
pages = "331-321",
number = "2",
volume = "11",
doi = "10.1111/ijac.12010"
}
Prstić, A., Aćimović-Pavlović, Z., Terzić, A., Pavlović, L.,& Grujić, S.. (2014). Development of New Cordierite-Based Refractory Coatings for Casting Applications. in International Journal of Applied Ceramic Technology
Wiley, Hoboken., 11(2), 321-331.
https://doi.org/10.1111/ijac.12010
Prstić A, Aćimović-Pavlović Z, Terzić A, Pavlović L, Grujić S. Development of New Cordierite-Based Refractory Coatings for Casting Applications. in International Journal of Applied Ceramic Technology. 2014;11(2):321-331.
doi:10.1111/ijac.12010 .
Prstić, Aurel, Aćimović-Pavlović, Zagorka, Terzić, Anja, Pavlović, Ljubica, Grujić, Snezana, "Development of New Cordierite-Based Refractory Coatings for Casting Applications" in International Journal of Applied Ceramic Technology, 11, no. 2 (2014):321-331,
https://doi.org/10.1111/ijac.12010 . .
2
2
3

Mechanically activated coal ash as refractory bauxite shotcrete microfiller: Thermal interactions mechanism investigation

Terzić, Anja; Andrić, Ljubiša; Mitić, Vojislav

(Elsevier Sci Ltd, Oxford, 2014)

TY  - JOUR
AU  - Terzić, Anja
AU  - Andrić, Ljubiša
AU  - Mitić, Vojislav
PY  - 2014
UR  - http://rims.institutims.rs/handle/123456789/242
AB  - A growing demand for refractory castables with advanced properties has given rise to a continuous technological evolution and highlighted the necessity for secondary raw materials reapplication even in refractory industry. For the experiment, refractory shotcretes with the same matrix composition were prepared from 30 wt% of high aluminate cement, 40 wt% of bauxite aggregate and 30 wt% of chamotte filler. The request for obtaining a low-cement castable is fulfilled by application of mechanically activated coal ash as microfiller in one of the bauxite shotcretes. The fly ash was activated by means of vibratory disc mill and ultra-centrifugal mill, and results were compared. The shotcrete samples were dried at 110 degrees C during 24 h to create specimens for investigation of mechanical and thermal properties. The properties have been studied at temperatures ranging from room temperature to adopted maximal temperature 1400 degrees C. At maximal 1400 degrees C, the bauxite shotcretes were mainly composed of anorthite, corundum, mullite and cristobalite. Mechanisms of hydration and sintering were investigated by means of differential thermal analysis (DTA) at three different heating rates. DTA measurements showed different activation energies for ordinary bauxite shotcrete and shotcrete with microfiller. The evolution of the refractory shotcretes properties was investigated and correlated with microstructural changes induced by temperature and microfiller addition. The combination of advantages in investigated refractory shotcretes makes them suitable for use in severe conditions at high temperature applications especially in refractory industries.
PB  - Elsevier Sci Ltd, Oxford
T2  - Ceramics International
T1  - Mechanically activated coal ash as refractory bauxite shotcrete microfiller: Thermal interactions mechanism investigation
EP  - 12065
IS  - 8
SP  - 12055
VL  - 40
DO  - 10.1016/j.ceramint.2014.04.045
ER  - 
@article{
author = "Terzić, Anja and Andrić, Ljubiša and Mitić, Vojislav",
year = "2014",
abstract = "A growing demand for refractory castables with advanced properties has given rise to a continuous technological evolution and highlighted the necessity for secondary raw materials reapplication even in refractory industry. For the experiment, refractory shotcretes with the same matrix composition were prepared from 30 wt% of high aluminate cement, 40 wt% of bauxite aggregate and 30 wt% of chamotte filler. The request for obtaining a low-cement castable is fulfilled by application of mechanically activated coal ash as microfiller in one of the bauxite shotcretes. The fly ash was activated by means of vibratory disc mill and ultra-centrifugal mill, and results were compared. The shotcrete samples were dried at 110 degrees C during 24 h to create specimens for investigation of mechanical and thermal properties. The properties have been studied at temperatures ranging from room temperature to adopted maximal temperature 1400 degrees C. At maximal 1400 degrees C, the bauxite shotcretes were mainly composed of anorthite, corundum, mullite and cristobalite. Mechanisms of hydration and sintering were investigated by means of differential thermal analysis (DTA) at three different heating rates. DTA measurements showed different activation energies for ordinary bauxite shotcrete and shotcrete with microfiller. The evolution of the refractory shotcretes properties was investigated and correlated with microstructural changes induced by temperature and microfiller addition. The combination of advantages in investigated refractory shotcretes makes them suitable for use in severe conditions at high temperature applications especially in refractory industries.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Ceramics International",
title = "Mechanically activated coal ash as refractory bauxite shotcrete microfiller: Thermal interactions mechanism investigation",
pages = "12065-12055",
number = "8",
volume = "40",
doi = "10.1016/j.ceramint.2014.04.045"
}
Terzić, A., Andrić, L.,& Mitić, V.. (2014). Mechanically activated coal ash as refractory bauxite shotcrete microfiller: Thermal interactions mechanism investigation. in Ceramics International
Elsevier Sci Ltd, Oxford., 40(8), 12055-12065.
https://doi.org/10.1016/j.ceramint.2014.04.045
Terzić A, Andrić L, Mitić V. Mechanically activated coal ash as refractory bauxite shotcrete microfiller: Thermal interactions mechanism investigation. in Ceramics International. 2014;40(8):12055-12065.
doi:10.1016/j.ceramint.2014.04.045 .
Terzić, Anja, Andrić, Ljubiša, Mitić, Vojislav, "Mechanically activated coal ash as refractory bauxite shotcrete microfiller: Thermal interactions mechanism investigation" in Ceramics International, 40, no. 8 (2014):12055-12065,
https://doi.org/10.1016/j.ceramint.2014.04.045 . .
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A Kinetic Study of Micronization Grinding of Dry Mica in a Planetary Ball Mill

Andrić, Ljubiša; Terzić, Anja; Aćimović-Pavlović, Zagorka; Trumić, Milan; Petrov, Milan; Pavlović, Ljubica

(Hindawi Ltd, London, 2013)

TY  - JOUR
AU  - Andrić, Ljubiša
AU  - Terzić, Anja
AU  - Aćimović-Pavlović, Zagorka
AU  - Trumić, Milan
AU  - Petrov, Milan
AU  - Pavlović, Ljubica
PY  - 2013
UR  - http://rims.institutims.rs/handle/123456789/220
AB  - This paper presents results of the research of micronization grinding of dry mica in a planetary ball mill. Investigation was conducted in order to improve the quality and to obtain clearly defined properties and characteristics of mica powder. The micronization grinding of dry mica was performed in four time periods: 30, 60, 120, and 360 minutes. The micronized powder was investigated by means of differential thermal and thermogravimetric analyses, analysis of the degree of micronization, the specific surface area analysis, and X-ray diffraction analysis. The achieved results pointed out that dry mica micronization grinding which exceeds 360 minutes is recommended for this type of mill. However, it was also shown that the micronized mica produced by means of planetary ball mill after extra long periods of micronization grinding can pass into amorphous state.
PB  - Hindawi Ltd, London
T2  - Advances in Materials Science and Engineering
T1  - A Kinetic Study of Micronization Grinding of Dry Mica in a Planetary Ball Mill
VL  - 2013
DO  - 10.1155/2013/543857
ER  - 
@article{
author = "Andrić, Ljubiša and Terzić, Anja and Aćimović-Pavlović, Zagorka and Trumić, Milan and Petrov, Milan and Pavlović, Ljubica",
year = "2013",
abstract = "This paper presents results of the research of micronization grinding of dry mica in a planetary ball mill. Investigation was conducted in order to improve the quality and to obtain clearly defined properties and characteristics of mica powder. The micronization grinding of dry mica was performed in four time periods: 30, 60, 120, and 360 minutes. The micronized powder was investigated by means of differential thermal and thermogravimetric analyses, analysis of the degree of micronization, the specific surface area analysis, and X-ray diffraction analysis. The achieved results pointed out that dry mica micronization grinding which exceeds 360 minutes is recommended for this type of mill. However, it was also shown that the micronized mica produced by means of planetary ball mill after extra long periods of micronization grinding can pass into amorphous state.",
publisher = "Hindawi Ltd, London",
journal = "Advances in Materials Science and Engineering",
title = "A Kinetic Study of Micronization Grinding of Dry Mica in a Planetary Ball Mill",
volume = "2013",
doi = "10.1155/2013/543857"
}
Andrić, L., Terzić, A., Aćimović-Pavlović, Z., Trumić, M., Petrov, M.,& Pavlović, L.. (2013). A Kinetic Study of Micronization Grinding of Dry Mica in a Planetary Ball Mill. in Advances in Materials Science and Engineering
Hindawi Ltd, London., 2013.
https://doi.org/10.1155/2013/543857
Andrić L, Terzić A, Aćimović-Pavlović Z, Trumić M, Petrov M, Pavlović L. A Kinetic Study of Micronization Grinding of Dry Mica in a Planetary Ball Mill. in Advances in Materials Science and Engineering. 2013;2013.
doi:10.1155/2013/543857 .
Andrić, Ljubiša, Terzić, Anja, Aćimović-Pavlović, Zagorka, Trumić, Milan, Petrov, Milan, Pavlović, Ljubica, "A Kinetic Study of Micronization Grinding of Dry Mica in a Planetary Ball Mill" in Advances in Materials Science and Engineering, 2013 (2013),
https://doi.org/10.1155/2013/543857 . .
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8

Synthesizing a new type of mullite lining

Aćimović, Zagorka; Terzić, Anja; Andrić, Ljubiša; Pavlović, Ljubica; Pavlović, Marko

(Inst Za Kovinske Materiale I In Tehnologie, Ljubjana, 2013)

TY  - JOUR
AU  - Aćimović, Zagorka
AU  - Terzić, Anja
AU  - Andrić, Ljubiša
AU  - Pavlović, Ljubica
AU  - Pavlović, Marko
PY  - 2013
UR  - http://rims.institutims.rs/handle/123456789/214
AB  - Various possibilities for developing new mullite-based refractory linings that can be applied in a casting process were investigated and are presented in this paper. An optimization of the refractory-lining composition design with the controlled rheological properties was achieved by applying different lining components and altering the lining-production procedure. Mullite was used as a high-temperature filler. A mullite sample was tested with the following methods: X-ray diffraction analysis, differential thermal analysis and scanning-electron microscopy. The particle shape and particle size were analyzed with the program package for an image analysis called OZARIA 2.5. It was proved that an application of this type of lining has a positive effect on the surface quality, structural and mechanical properties of the castings of Fe-C alloys obtained by casting into sand molds, according to the method of expandable patterns (the EPC casting process).
PB  - Inst Za Kovinske Materiale I In Tehnologie, Ljubjana
T2  - Materiali in tehnologije
T1  - Synthesizing a new type of mullite lining
EP  - 780
IS  - 6
SP  - 777
VL  - 47
UR  - https://hdl.handle.net/21.15107/rcub_rims_214
ER  - 
@article{
author = "Aćimović, Zagorka and Terzić, Anja and Andrić, Ljubiša and Pavlović, Ljubica and Pavlović, Marko",
year = "2013",
abstract = "Various possibilities for developing new mullite-based refractory linings that can be applied in a casting process were investigated and are presented in this paper. An optimization of the refractory-lining composition design with the controlled rheological properties was achieved by applying different lining components and altering the lining-production procedure. Mullite was used as a high-temperature filler. A mullite sample was tested with the following methods: X-ray diffraction analysis, differential thermal analysis and scanning-electron microscopy. The particle shape and particle size were analyzed with the program package for an image analysis called OZARIA 2.5. It was proved that an application of this type of lining has a positive effect on the surface quality, structural and mechanical properties of the castings of Fe-C alloys obtained by casting into sand molds, according to the method of expandable patterns (the EPC casting process).",
publisher = "Inst Za Kovinske Materiale I In Tehnologie, Ljubjana",
journal = "Materiali in tehnologije",
title = "Synthesizing a new type of mullite lining",
pages = "780-777",
number = "6",
volume = "47",
url = "https://hdl.handle.net/21.15107/rcub_rims_214"
}
Aćimović, Z., Terzić, A., Andrić, L., Pavlović, L.,& Pavlović, M.. (2013). Synthesizing a new type of mullite lining. in Materiali in tehnologije
Inst Za Kovinske Materiale I In Tehnologie, Ljubjana., 47(6), 777-780.
https://hdl.handle.net/21.15107/rcub_rims_214
Aćimović Z, Terzić A, Andrić L, Pavlović L, Pavlović M. Synthesizing a new type of mullite lining. in Materiali in tehnologije. 2013;47(6):777-780.
https://hdl.handle.net/21.15107/rcub_rims_214 .
Aćimović, Zagorka, Terzić, Anja, Andrić, Ljubiša, Pavlović, Ljubica, Pavlović, Marko, "Synthesizing a new type of mullite lining" in Materiali in tehnologije, 47, no. 6 (2013):777-780,
https://hdl.handle.net/21.15107/rcub_rims_214 .
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