Reuse of fines and environmental issues in the production of ferro alloys-SAIL's experience

摘要

In steelmaking ferroalloys occupies a commanding role for production of varied quality of steel. Ferroalloys enable alloying elements such as chromium, silicon, manganese, vanadium etc to be safely and economically introduced into metallurgical processes thus giving certain desirable properties of the alloyed metal. Their importance grew with the progress of the steel metallurgy which implied more diversified alloying elements, in better controlled quantities, in purer steel. The ferroalloy industry became a key supplier to the steel industry. Production of ferroalloys generally involves the use of Electric Arc furnace (EAF) into which raw materials (e.g. various metal ores, quartz, cnke, lime etc ) with relatively fluctuating physical compositions arc loaded. Due to this, one of the major environmental impacts of producing ferroalloys is the emission of dust and fume from the smelting process.