Chemometric Analysis of Alternations in Coal Ash Quality Induced by Application of Different Mechano-chemical Processing Parameters
Apstrakt
The coal fly ash mechano-chemical activation conducted via high energy ultra-centrifugal mill was optimized using mathematical and statistical tools. The aim of the investigation was to accent the merits of alternations in ash processing schemes with a referral regarding the enhancement of the ash reactivity that will lead to its higher volume utilization as a cement replacement in concrete design. The impact of the processing parameters sets (number of rotor revolutions, current intensity, activation period, circumferential rotor speed, mill capacity) on the on the product's quality factors (grain size distribution, average grain size, micronization level, agglomeration tendency, specific surface area) was assessed via Response surface method, Standard score analysis and Principal component analysis in order to obtain the most favorable output. Developed models were able to meticulously predict quality parameters in an extensive range of processing parameters. The calculated r(2) valu...es were in the range of 0.846-0.999. The optimal ash sample, that reached the Standard Score as high as 0.93, was produced using a set of processing parameters appropriate to experimental sequence with applied 120 mu m sieve mesh. The microstructural characteristics were assessed using image-processing values and histogram plots of the activated fly ash SEM images.
Ključne reči:
Ultra-centrifugal activator / High energy milling / Electron microscopy / Construction composites / Analytical modelingIzvor:
Science of Sintering, 2017, 49, 4, 381-397Izdavač:
- Međunarodni Institut za nauku o sinterovanju, Beograd
Finansiranje / projekti:
- Usmerena sinteza, struktura i svojstva multifunkcionalnih materijala (RS-MESTD-Basic Research (BR or ON)-172057)
- Razvoj i primena multifunkcionalnih materijala na bazi domaćih sirovina modernizacijom tradicionalnih tehnologija (RS-MESTD-Integrated and Interdisciplinary Research (IIR or III)-45008)
- Osmotska dehidratacija hrane - energetski i ekološki aspekti održive proizvodnje (RS-MESTD-Technological Development (TD or TR)-31055)
- Mehanohemijski tretman nedovoljno kvalitetnih mineralnih sirovina (RS-MESTD-Technological Development (TD or TR)-34006)
DOI: 10.2298/SOS1704381T
ISSN: 0350-820X
WoS: 000429907000004
Scopus: 2-s2.0-85042535699
Institucija/grupa
Institut za ispitivanje materijalaTY - JOUR AU - Terzić, Anja AU - Pezo, Lato AU - Andrić, Ljubiša PY - 2017 UR - http://rims.institutims.rs/handle/123456789/310 AB - The coal fly ash mechano-chemical activation conducted via high energy ultra-centrifugal mill was optimized using mathematical and statistical tools. The aim of the investigation was to accent the merits of alternations in ash processing schemes with a referral regarding the enhancement of the ash reactivity that will lead to its higher volume utilization as a cement replacement in concrete design. The impact of the processing parameters sets (number of rotor revolutions, current intensity, activation period, circumferential rotor speed, mill capacity) on the on the product's quality factors (grain size distribution, average grain size, micronization level, agglomeration tendency, specific surface area) was assessed via Response surface method, Standard score analysis and Principal component analysis in order to obtain the most favorable output. Developed models were able to meticulously predict quality parameters in an extensive range of processing parameters. The calculated r(2) values were in the range of 0.846-0.999. The optimal ash sample, that reached the Standard Score as high as 0.93, was produced using a set of processing parameters appropriate to experimental sequence with applied 120 mu m sieve mesh. The microstructural characteristics were assessed using image-processing values and histogram plots of the activated fly ash SEM images. PB - Međunarodni Institut za nauku o sinterovanju, Beograd T2 - Science of Sintering T1 - Chemometric Analysis of Alternations in Coal Ash Quality Induced by Application of Different Mechano-chemical Processing Parameters EP - 397 IS - 4 SP - 381 VL - 49 DO - 10.2298/SOS1704381T ER -
@article{ author = "Terzić, Anja and Pezo, Lato and Andrić, Ljubiša", year = "2017", abstract = "The coal fly ash mechano-chemical activation conducted via high energy ultra-centrifugal mill was optimized using mathematical and statistical tools. The aim of the investigation was to accent the merits of alternations in ash processing schemes with a referral regarding the enhancement of the ash reactivity that will lead to its higher volume utilization as a cement replacement in concrete design. The impact of the processing parameters sets (number of rotor revolutions, current intensity, activation period, circumferential rotor speed, mill capacity) on the on the product's quality factors (grain size distribution, average grain size, micronization level, agglomeration tendency, specific surface area) was assessed via Response surface method, Standard score analysis and Principal component analysis in order to obtain the most favorable output. Developed models were able to meticulously predict quality parameters in an extensive range of processing parameters. The calculated r(2) values were in the range of 0.846-0.999. The optimal ash sample, that reached the Standard Score as high as 0.93, was produced using a set of processing parameters appropriate to experimental sequence with applied 120 mu m sieve mesh. The microstructural characteristics were assessed using image-processing values and histogram plots of the activated fly ash SEM images.", publisher = "Međunarodni Institut za nauku o sinterovanju, Beograd", journal = "Science of Sintering", title = "Chemometric Analysis of Alternations in Coal Ash Quality Induced by Application of Different Mechano-chemical Processing Parameters", pages = "397-381", number = "4", volume = "49", doi = "10.2298/SOS1704381T" }
Terzić, A., Pezo, L.,& Andrić, L.. (2017). Chemometric Analysis of Alternations in Coal Ash Quality Induced by Application of Different Mechano-chemical Processing Parameters. in Science of Sintering Međunarodni Institut za nauku o sinterovanju, Beograd., 49(4), 381-397. https://doi.org/10.2298/SOS1704381T
Terzić A, Pezo L, Andrić L. Chemometric Analysis of Alternations in Coal Ash Quality Induced by Application of Different Mechano-chemical Processing Parameters. in Science of Sintering. 2017;49(4):381-397. doi:10.2298/SOS1704381T .
Terzić, Anja, Pezo, Lato, Andrić, Ljubiša, "Chemometric Analysis of Alternations in Coal Ash Quality Induced by Application of Different Mechano-chemical Processing Parameters" in Science of Sintering, 49, no. 4 (2017):381-397, https://doi.org/10.2298/SOS1704381T . .