Study on the synthesis of FeCrMnSi ferroalloy using technogenic raw materials

Abstract

The article explores the potential for utilizing technogenic waste – chromium and manganese dust as well as coal slurry – to produce a novel complex FeCrMnSi ferroalloy used for steel alloying and deoxidation. A technical and chemical analysis of the investigated waste materials was conducted. These materials are fine-grained products, necessitating their briquetting into a single charge. Laboratory experiments were carried out to smelt the chromium-manganese-silicon ferroalloy at 1750°C (50°C above the theoretical melting point), resulting in experimental samples of the complex ferroalloy with the following average composition (in %): 40.80 Cr, 19.44 Mn, 9.75 Si, 25.44 Fe, and 4.53 C. The study's findings demonstrate that the waste materials possess the necessary characteristics for producing high-quality ferroalloys, highlighting the potential to reduce dependence on expensive raw materials.