新型炼铜转炉设计应用与实践

Application and practice of new converter design for copper smelting

铜冶炼过程中,转炉吹炼技术存在一定的缺陷。通过利用原有转炉端墙开发设计了新型进料分口及进料溜槽,将熔炼炉产生的高品位铜锍连续排放至转炉内进行吹炼,吹炼过程中所需冷铜通过残极加料机从炉口加入转炉内,吹炼至终点摇炉出铜。从而解决了原转炉吹炼操作存在多次频繁摇炉进料,造成低空污染严重的问题,并保留了转炉原有的操作灵活、冷料率大、脱杂能力强等优势。经工业化试验验证,采用该种生产工艺模式下的Pb脱除率可达到76.12%,As的脱除率可达到81.4%,Sb的脱除率可达到59.78%,Bi的脱除率可达到75.06%。

In copper smelting process,converter blowing technology has some defects.This paper studies a new feeding port and chute are developed and designed by using the original converter end wall.The high-grade copper matte produced by smelting furnace is continuously discharged into the converter for blowing.The cold copper needed in the blowing process is added into the converter from the furnace mouth through the residual pole feeder.The copper is blown to the end point of shaking the furnace.Therefore,the problem of serious low-altitude pollution caused by frequent shaking of furnace feeding in the original converter blowing operation is solved.The advantages of flexible operation,large cold material rate,strong impurity removal ability are retained.According to the industrial test,the removal rate of Pb,As,Sb and Bi can reach 76.12%,81.4%,59.78%and 75.06%,respectively.