Characteristic Features of the Gas Injection Process in Oxygen Converters That Use Iron-Containing Slag Produced During Steel Smelting

• Published in: Metallurgist (New York) 2019-09, Vol.63 (5-6), p.549-552
• Main Authors: Amelin, A. V., Protopopov, E. V., Kuznetsov, S. N., Kalinogorskii, A. N., Ganzer, L. A.
• Format: Article
• Language: English
• Subjects: Characterization and Evaluation of Materials; Chemistry and Materials Science; Iron compounds; Materials Science; Metallic Materials; Scrap metals; Steel
• ISSN: 0026-0894; 1573-8892
• DOI: 10.1007/s11015-019-00857-0

We describe the characteristic features of the steel smelting process in the 160-metric-ton converters at EVRAZ Consolidated West Siberian Metallurgical Plant JSC for the case where 10–50% of the solid metal charge consists of ferrous converter-slag waste products. Information on the chemical composition of the slag materials and the metal and slag components of the slag/scrap mixture was combined with the scrap consumption rate to quantitatively estimate the change in fundamental process statistics. The parameters of the traditional oxygen-injection process for the 160-metric-ton converters were compared against those for the technology to be discussed in this paper. Both the decrease in the concentration of non-ferrous-metal impurities and the required impurity removal levels at the exit from the converter are specified. The oxidative metal refining production data for the 160-metric ton converters at EVRAZ Consolidated West Siberian Metallurgical Plant JSC and the cost reductions from slag/metal scrap usage indicate that the process is economically promising.