We describe the results for full-scale experimental test production of high-basicity sinter (basicity 2.0–5.0) at the Enakievo Metallurgical Plant Sinter Shop. As sinter basicity increased from 2.0 to 5.0, the iron content of the sinter decreased from 53.05% to 32.24%, and the ferrous oxide concentration decreased from 17.55% to 9.29%. However, the strength specifications of the sinter were improved: The concentration of 0–5-mm fines decreased from 19.32% to 15.89%, and the yield of +5 mm size class in a drum test increased from 65.9% to 72.3% through optimization of the sintering process parameters. The use of high basicity sinter in blast-furnace smelting reduced the specific consumption of lime in the blast-furnace charge from 233.9 kg/metric ton of cast iron (at sinter basicity 2.0) to 103.5 kg/metric ton (at basicity 4.5) and, correspondingly, the specific feed rate for coke during castiron production decreased from 538.1 kg/metric ton to 476.6 kg/metric ton.
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Translated from Metallurg, Vol. 64, No. 8, pp. 14–20, August, 2020.
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Bobylev, G.S., Kovalenko, A.G., Padalka, V.P. et al. Full-Scale Experimental Test Production of High-Basicity Sinter in the Enakievo Metallurgical Plant Sinter Shop. Metallurgist 64, 741–749 (2020). https://doi.org/10.1007/s11015-020-01063-z
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DOI: https://doi.org/10.1007/s11015-020-01063-z