循环钢渣与铜渣搭配利用的碳热还原

 通过理论分析，提出了铜渣与钢渣搭配利用的新工艺，并通过试验考察了含碳球团的还原和熔分情况，探讨了该工艺的可行性。铜渣和钢渣互为熔剂，促进了相互的还原过程，碱度为2.0时最有利于磷的还原，1 400 ℃还原30 min时磷的气化脱除率约为75%；碱度为1.0时最有利于铁氧化物的还原，1 200 ℃还原20 min时试样的金属化率达到92%。铜渣与钢渣的质量之比高于1.32时可以实现渣、铁分离，碱度为1.0时粒铁的收得率超过90%，磷在粒铁中的分布率接近45%。

Carbothermic reduction for collocation use between circulating steelmaking slag and copper slag

A new process for collocation use between copper slag and steelmaking slag was proposed based on theoretical analysis， and the reduction as well as smelting-separation situation of carbon composite pellets was investigated by experiments to discuss the feasibility of this process. The copper slag and steelmaking slag promoted mutual reduction process as fluxing agents， and an alkalinity of 2.0 was most beneficial for the reduction of phosphorus， which removal rate was nearby 75% at 1 400 ℃ for 30 minutes. Moreover， the optimal alkalinity for iron oxides reduction was 1.0， the metallization ratio of which reached 92% at 1 200 ℃ for 20 minutes. The separation of iron from molten slag succeeded as the mass ratio of copper slag to steelmaking slag was higher than 1.32， and an iron yield exceeded 90% at the alkalinity of 1.0. Besides， the distribution rate of phosphorus within iron was closed to 45%.