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 . .

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 . .