我厂10t大型冲天炉从1973年以来就一直采用中央送风与侧吹相结合的送风方式进行熔炼,铁水出炉温度在1400℃以上,焦耗为每吨铁水100kg,每小时实际熔化量为13～15t,采用一般冶金焦炭就能满足生产要求。但是,十多年来,采用这种方法熔炼存在着一个严重的问题,即硅、锰元素烧损严重,高达35～40％。 Our factory 10t large cupola has been using the combination of the central air supply and the side blowing blasting since 1973, the hot metal temperature above 1400 ℃, the coke consumption is 100kg per ton of hot metal, the actual melting amount per hour is 13 ~ 15t, the general metallurgical coke can meet the production requirements. However, for more than a decade, there has been a serious problem with this method of smelting, that is, silicon and manganese are heavily burned up to 35-40%.