MATHEMATICAL-MODELING OF REFINING OF STAINLESS-STEEL IN MRPA CONVERTER

A mathematical model has been developed to describe the refining of st ainless steel in a converter. This refining process includes both deca rburisation and reduction stages. Reactions during the refining stage involve the metal, the slag, and the gas phases. Therefore, the model takes the three possible interfaces into account. The evolution of com position and temperature was computed for stainless steel melts. Compa rison between computed results and industrial process data demonstrate d the validity of the model. After adjustment of some model parameters , melts in a 100 t MRPA (material refining process of ALZ) converter w ith different process conditions were simulated. The agreement obtaine d was excellent, which illustrated that the industrial refining proces s could be simulated under different process conditions, making use of one set of fine tuned parameters.