平炉、转炉的钢渣废料代替石灰石和萤石作为炼铁熔剂,在国外,从五十年代起就已经开始采用。美国1977年钢渣利用率达100％,其中一半以上用作炼铁熔剂。西德蒂森钢铁公司42％的钢渣用于炼铁熔剂。加拿大、西欧、日本近年来均采用了这项钢渣综合利用代替熔剂材料的新技术,并取得了较大的技术经济效果。根据钢渣的组成及其理化性能,以及在高炉上的使用情况,我们认为,在冲天炉冶炼中采用钢渣熔剂也是有可能成功的。为此,我们经过试验,每吨铁水用45Kg转炉钢渣代替原来的石灰石、萤石,作冲天炉熔剂,效果较 Open hearth, converter slag instead of limestone and fluorite as ironmaking flux, in foreign countries, from the fifties onwards has already begun to adopt. In 1977, the utilization of steel slag in the United States reached 100%, of which more than half was used as fluxing agent. 42% of the steel from West Dexen Steel is used for ironmaking fluxes. In recent years, Canada, Western Europe and Japan have all adopted the new technology of comprehensive utilization of flux and slag instead of flux materials, and achieved great technical and economical results. According to the composition and physical and chemical properties of steel slag, and the use of the blast furnace, we believe that the use of slag flux in cupola furnace may also be successful. To this end, we have tested, per ton of molten iron with 45Kg converter slag instead of the original limestone, fluorite, for cupola flux, the effect is more