A Coupling Dynamic Model for Dissolution and Reduction of Chromium Ore in a Smelting Reduction Converter

摘要

For describing and resolving the process of chromium ore smelting reduction in a converter preferably,the coupling dynamic model was established based on the kinetic models of chromium ore dissolution and interfacial reducing reaction between the slag and metal.When 150 t stainless steel crude melts with chromium of 12% are produced in a smelting reduction converter with no initial chromium in metal at 1 560 ℃,the results of the coupling dynamic model show that the mean reduction rate and injection rate of chromium ore are 0.091 %·min-1 and 467 kg·min-1,respectively.The foundation of the coupling dynamic model provides a reference and basis on the constitution of rational processing route for a practical stainless steelmaking.