THERMODYNAMIC AND EXPERIMENTAL STUDIES ON THE INFLUENCE OF HIGH-ASH COAL IN THE PRODUCTION OF HIGH-CARBON FERROCHROME
Kuatbay Y. Kelamanov B. Aitkenov N. Uakhitova B.
31 December 2024Technical University of Kosice
Acta Metallurgica Slovaca
2024#30Issue 4178 - 182 pp.
This study presents a thermodynamic analysis of carbon ferrochrome smelting using the HSC Chemistry software and laboratory experiments in a Tamman furnace. Optimal conditions for replacing metallurgical coke with high-ash coal were established, including an oxide-to-solid carbon ratio of 1.07–1.74, ensuring complete chromium reduction. The slag phase and the conditions for reduction reactions were analyzed. It was demonstrated that high-ash coal positively affects the technological parameters of the smelting process due to its silicon oxide content and high specific electrical resistance. Large-scale laboratory experiments were conducted in a 200 kVA submerged arc furnace to validate the results, resulting in a grade experimental ferrochrome sample. The study identifies optimal technological requirements for carbon ferrochrome smelting, facilitating further industrial application.
experimental modeling , thermodynamic modeling , Сarbon ferrochrome
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Karaganda Industrial University, Department of Metallurgy and Materials Science, Republic Street No 30. 101400, Temirtau, Kazakhstan
Aktobe Regional University Named After K. Zhubanov, Department of Metallurgy and Mining, А. Moldagulova Street No. 34, Aktobe, 030000, Kazakhstan
Karaganda Industrial University
Aktobe Regional University Named After K. Zhubanov
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