目前,我国钢铁渣资源量约有3亿吨,每年新产生8400万吨钢铁渣,其中钢渣约2900万吨、高炉渣约5500万吨。在高炉渣中金属铁含量以0.5%计算,钢渣中铁含量平均以5%计算,堆置的钢铁渣中约有700余万吨金属铁未回收,每年新产生的钢铁渣中仍有172.5万吨金属铁随渣排出。因此,如何合理开 At present, there are about 300 million tons of steel slag resources in our country, 84 million tons of steel slag are newly produced each year, of which about 29 million tons of steel slag and about 55 million tons of blast furnace slag. In the blast furnace slag, the content of iron in the slag is calculated at 0.5%. The average iron content in the slag is calculated at 5%. About 7 million tons of iron ore are not recovered in the slag, and 1,725,000 tons Metal iron with slag discharge. So, how to open it rationally