By analysis of the inner defect construction in Xiang-Steel 900-ton-mixer furnace and adoption of the reasonable refractory and optimize furnace profile contruction efc. The life of mixer furnace could be improved.

• 通过分析湘钢900t混铁炉内衬结构上存在的缺陷,采用合理耐火材料,优化炉型内衬结构等,从而提高了混铁炉使用寿命。