Conventional and tailored Mn-bearing alloying agents for the production of high manganese steels

Abstract

The industrial production of high manganese steel melts with approx. 10-30 wt% Mn makes high demands on the utilized Mn-bearing alloying agents in terms of chemical composition and cost-efficiency. Conventional Mn-bearing alloying agents are reviewed in this regard. A modified process route has been conceived for pyrometallurgical winning of special silicomanganese grades tailored for high manganese steelmaking. For each individual process step, namely manganese slag production, silicomanganese production, and optional desiliconization of silicomanganese, results of lab-scale experiments are discussed. Concerning the industrial production of high manganese steel melts, conventional Mn-bearing alloying agents are reviewed. A modified process route for pyrometallurgical winning of special silicomanganese grades tailored for high manganese steelmaking is conceived. For each individual process step, namely manganese slag production, silicomanganese production, and optional desiliconization of silicomanganese, results of lab-scale experiments are discussed.