目前一般高炉使用砂模出铁,由于砂模打的不实和模内不平整,铸出来的生铁表面粘有大量砂粒,因而降低了铁的表面质量,特别是转炉炼钢生铁,在化铁炉熔化过程中,由于粘砂数量而波动,使碱度不稳定,严重的影响着化铁过程的脱硫效率,所以会降低转炉炼钢的 The current blast furnace using sand mold tapping, sand mold play false and in-mold uneven cast cast iron surface with a large number of grit, thus reducing the surface quality of iron, especially converter steelmaking pig iron, iron Furnace melting process, due to fluctuations in the amount of sticky sand, the alkalinity instability, a serious impact on the desulfurization efficiency of the iron process, it will reduce the converter steelmaking