STUDYING THE SHUBARKOL DEPOSIT COAL AS THE CARBONACEOUS REDUCING AGENT IN FERROALLOY PRODUCTION
Ibragimova D.А. Pak Yu.N. Portnov V.S. Pak D.Yu. Ibragimov E.Ye.
June 2022Asian Research Publishing Network
ARPN Journal of Engineering and Applied Sciences
2022#17Issue 121250 - 1255 pp.
One of the promising trends in the development of ferroalloy production is the use of coals as carbonaceous reducing agents. There are presented the results of comprehensive studies of the physical-and-chemical and technological properties of coals from the Shubarkol deposit (Central Kazakhstan) for the coke-free production of various ferroalloys (ferrosilicon silicomanganese, high-carbon ferrochrome). Semi-coke was obtained as an active reducing agent based on high-speed thermal-oxidative pyrolysis of Shubarkol coals with specified quality characteristics: ash content 4.36%; the yield of volatile substances 47.24%; low sulfur content 0.35% and phosphorus 0.01%. The optimal temperature parameters and heat treatment modes were determined to ensure the production of carbonaceous reducing agents with sufficient structural strength and high reactivity. One can expect increasing the efficiency of coke-free production of ferroalloys when selecting the optimal proportion of coal in the charge composition, making appropriate changes to the operating modes of ferroalloy furnaces to improve technical and economic indicators, and introducing instrumental methods of express analysis of the ash content of the coal used, the yield of volatile substances, combustion heat and chemical composition
Carbonaceous reducing agent , Chemical composition , Low-ash coal , Porosity , Semi-coke , Thermal-oxidative process , Volatile substance yield
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Karaganda Technical University, Kazakhstan
Shubarkol Komir JSC, Kazakhstan
Karaganda Technical University
Shubarkol Komir JSC
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