通过理论分析,并结合青钢新老厂区多年现场实际生产情况,对青钢高炉渣中适宜镁铝比进行了探讨。在青钢原燃料条件下,对于老区500m~3高炉,适宜镁铝比为0.65左右;对于新区1800m~3高炉,适宜镁铝比为0.50,后期随冶炼条件的改善,可以继续降低。青钢高炉生产实践表明,高炉适宜镁铝比很大程度上取决于高炉的原燃料条件和操作环境。 Through theoretical analysis, combined with the actual production of old and new factory in Qinghai Iron and Steel Field for many years, the suitable ratio of Mg and Al in blast furnace slag was discussed. In the condition of Qingyuan’s raw fuel, the suitable Mg / Al ratio is about 0.65 for the 500m ~ 3 blast furnace in the old area, and the suitable Mg / Al ratio is 0.50 for the 1800m ~ 3 blast furnace in the new area, which can be further reduced with the improvement of the smelting conditions. Qinggang blast furnace production practice shows that blast furnace suitable magnesium-aluminum ratio largely depends on the blast furnace raw fuel conditions and operating environment.