Manufacturing Method of Basic Flux for Steelmaking and Basic Flux Manufactured by the Method)

摘要

The present invention relates to a new manufacturing method of a flux for steel making that exhibits inclusion absorption capacity and temperature-maintaining properties equal to or higher than the conventional flux, and more particularly, mainly using alumina waste refractory which is discarded as a by-product of the steel industry or a construction waste material. The present invention relates to a new method for producing a basic flux for steel making with a basicity of 1.2 to 1.6, which can be manufactured with a relatively low sintering temperature of around 1100°C. The method for producing a basic flux for steelmaking according to the present invention is to prepare a powder composition comprising 55 to 65% of calcium carbonate, 30 to 40% of waste alumina refractory, and 3 to 5% of alumina cement, and a solvent for hydration of alumina cement. The first step; A second step of hardening the powder composition while inducing a hydration reaction of the alumina cement by adding a solvent for hydration of alumina cement to the powder composition; A third step of dehydrating the cured product at 700 to 900°C; It characterized in that it comprises a; a fourth step of sintering the dehydrated at 1100 ~ 1200 ℃.