Effectiveness of silicomanganese smelting utilizing high-ash coal


Makhambetov Y. Akhmetov A. Myngzhassar Y. Toleukadyr R. Burumbayev A. Zhakan A. Kutzhanov M.
1 August 2024Institute of Physics

Materials Research Express
2024#11Issue 8

This study investigates the utilization of high-ash coal as an alternative reductant in the smelting of silicomanganese, aiming to reduce the carbon footprint of traditional coke-based processes. Experiments were conducted using an ore-thermal furnace with a transformer power of 200 kVA to simulate industrial conditions. The charge consisted of manganese ore (Mn - 36%), slag from refined ferromanganese production (MnO - 25%), and high-ash coal (ash content 40%-50%). Chemical analysis of the produced alloy showed a composition of Mn-70%, Si-20%, C-1.28%, P-0.06%, and S-0.05%, meeting the standards for silicomanganese. The results demonstrate that high-ash coal can replace coke without compromising the quality of the alloy. This approach not only indirect CO2 emissions but also leverages the abundant availability of high-ash coal, which is often discarded as waste. The study highlights the potential for significant environmental benefits and cost savings, making this method a viable alternative for sustainable industrial practices. The findings support the industrial application of high-ash coal in silicomanganese production, contributing to more eco-friendly and economically feasible metallurgical processes.

carbothermy , ferroalloy , ore-thermal furnace , silicomanganese , slag

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Laboratory of Ferroalloys and Recovery Processes, Zh. Abishev Chemical-Metallurgical Institute, Ermekova 63, Karaganda, 1000009, Kazakhstan
National University of Science and Technology MISIS, Leninskiy Prospekt 4, Moscow, 119049, Russian Federation

Laboratory of Ferroalloys and Recovery Processes
National University of Science and Technology MISIS

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