IMPROVEMENT OF DESULFURIZATION BY ALUMINUM ADDITION INTO HOT METAL IN POWDERED LIME INJECTION PROCESS.

Abstract

Improvement was obtained for the reaction efficiency of hot metal desulfurization by lime powder injection with N//2 gas by prior addition of aluminum. The desulfurization rate was faster for Fe-C//s//a//t-Si-Al-S melt than for Fe-C//s//a//t-Si-S melt. Reaction layers on a lime lump immersed in the melts were examined by electron probe microanalysis and X-ray diffraction.