STEEL REFINERY FLUX COMPOSITION OF LOW TEMPERATURE FORM USING FLYASH

摘要

In the temperature of the CaF2 and equivalent or less than, the melting point of the slag is built up and the mobility can be improved. The object of the invention is intended to provide the solvent considered to the environmental protection dimension by the refractory life extension and shapelessness stone solvent. A low temperature solvent composition for the steel manufacture refining using the fly ash contains calcium aluminate based minimill refining slag 72~88 weight%, the fly ash 4~12 weight% and metal aluminum 8~16 weight%. And performs the followings: a process where it transports the minimill refining slag generating during the minimill steelmaking process and the minimill refining slag separately cools; a process of smashing the cooled minimill refining slag to the size less than 50mm; a process of pulverizing the crushed minimill refining slag as described above to the size less than 3mm; a process of selecting to the minimill refining slag exceeding the minimill refining slag which the wave À is pulverized the grain size screen is used; and a process of removing the ferric oxide from the minimill refining slag less than 3mm selected in the screening process.