This article contains information concerning of the analysis the possibility of defining refinery qualities of the slag based thermo-physical
and thermo-dynamical data. It was showed the brass refining with the many-carbide reagents introduced in to the slag. The paper presents
the results of the structure analysis of the brass after carbide slag refining in the industrial conditions. The results of the macrostructure
analysis have confirmed the argument on high reducing effectiveness of manganese and aluminium carbide used during CuZn39Pb2 alloy
melting. The X-Ray microanalysis of the ingot cross-section has shown considerable discrepancies in the disposition of the inclusions.
This effects showed on the great influence of reduction melting condition in to the brass melting