Multicomponent silicon chromium alloys as an innovative metallurgical reducer

This publication presents the results of modelling physicochemical processes in a submerged arc furnace for melting silicon-iron-chromium alloys characterized by a Cr/Fe ratio of at least 2.0. The refining of these alloys by metal­lurgical decarburization is also discussed, reducing the C content to a maximum of 0.02 % by weight. These alloys are used as new chromium ore reducers in the production of low-carbon ferrochrome. A physicochemical model developed be­fore trial production of the alloys enabled the determination of key parameters of the technological process and the definition of their allowable ranges of varia­bility. The developed model was verified through its implementation into metal­lurgical practice at the ReAlloys sp. z o.o. ferroalloys plant. It was determined that, provided appropriate technological procedures were maintained, the devia­tions between the parameters calculated in the model and those obtained during production did not exceed 3 %.