IRON REDUCTION FROM SLAG OF SULPHURIC MELTING BY THE PRODUCTS OF CARBON GASIFICATION

Abstract

Results of the investigation of phase transformations in the slag of sulphuric cupreous melting during its reduction by the products of gasification of carbonic reducing agentsat the temperature 1100 °С are being discussed. It is experimentally found, that in belllike equipment at the temperature 1100  °С he most part of iron from dump slag of sulphuric melting of the cupreous concentrates may be reduced to metallic state by the products of gasification of hydrocarbonaceous carbonic reducing agents. During the indirect reduction of the slag at the temperature above temperature of its melting, metallic iron concentrates mostly at the external surface of product of reduction, producing large inclusions, which may be easy extracted by magnetic separation. It’s mostly rational to reduce multilayer blend, consisting from slag layers less than5 mmthick and separating them layersof grinded coal.