炉渣中铅锌还原挥发的研究

Experimental study on reduction and volatilization of lead and zinc from slag

从冶炼炉渣中回收铅锌，讨论了还原温度、还原时间、煤和石灰的配入量等因素对铅锌还原挥发的影响．实验结果表明，在煤的配入量为炉渣质量的50％、还原温度1150℃、还原时间40min、石灰配人量为理论量的0．8～0．85倍的条件下，锌的挥发率高于95％，铅的挥发率高于97％．

This paper describes the existing circumstance of zinc resources in China, a reducing technology to volatilize lead and zinc from smelting slag is put forward. Taking into account the influences of reducing temperature, reducing time, lime rations, etc. on the reduction and volatilization of lead and zinc, condition experiments were carried out. The experiment results indicate that zinc volatilizing rate is greater than 95%, lead volatilizing rate than 97% ,under the conditions of coal rations 50% of slag mass, reducing temperature at 1150℃, reducing time of 40min and lime rations 0. 8-0.85 times of theoretical value.