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Chemometric Analysis of Alternations in Coal Ash Quality Induced by Application of Different Mechano-chemical Processing Parameters

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2017
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Authors
Terzić, Anja
Pezo, Lato
Andrić, Ljubiša
Article (Published version)
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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) 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.

Keywords:
Ultra-centrifugal activator / High energy milling / Electron microscopy / Construction composites / Analytical modeling
Source:
Science of Sintering, 2017, 49, 4, 381-397
Publisher:
  • Međunarodni Institut za nauku o sinterovanju, Beograd
Funding / projects:
  • Directed synthesis, structure and properties of multifunctional materials (RS-172057)
  • Development and application of multifunctional materials using domestic raw materials in upgraded processing lines (RS-45008)
  • Osmotic dehydration of food - energy and ecological aspects of sustainable production (RS-31055)
  • Mechanochemistry treatment of low quality mineral raw materials (RS-34006)

DOI: 10.2298/SOS1704381T

ISSN: 0350-820X

WoS: 000429907000004

Scopus: 2-s2.0-85042535699
[ Google Scholar ]
1
URI
http://rims.institutims.rs/handle/123456789/310
Collections
  • Radovi istraživača / Researchers' publications
Institution/Community
Institut za ispitivanje materijala
TY  - 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 . .

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