The effect of processing parameters on ferromanganese alloy carbon content in Mamatwan ore reduction

Abstract

Industrial production of medium carbon ferromanganese is accomplished by decarburization of high carbon ferromanganese in an oxygen blown converter. In this study, the possible in situ refinement of high carbon ferromanganese was tested in carbon deficient mixtures of pre-reduced Mamatwan ore, coal char, and silica flux reacted at furnace temperatures of 1450°–1550°C. The resultant phase chemistry was analyzed and interpreted with the aid of thermochemical calculations. Production of carbon unsaturated ferromanganese alloy in the AlloyStream process is explained with reference to laboratory experimental results.