云南某冶炼铅炉渣资源综合回收利用

Comprehensive Utilization of Lead Slag Resources in Yunnan

用选矿方法处理冶炼铅炉渣的研究国内外成果不多,主要是因为冶炼后的炉渣物相复杂、嵌布颗粒细,矿物易碎,容易过磨。该文仅对云南某冶炼后的铅炉渣进行了磁选、浮选、重选以及联合选别流程的小型实验室试验研究,以寻求有效的选矿工艺。试验结果验证,磁选对该渣基本没有分选效果,浮选、重选有一定的分选效果,但回收率都低。综合考虑炉渣物相复杂,成分较多,可利用有用元素含量并不多,采用浮选工艺复杂,药剂用量大,并不经济,生产实践中采用摇床重选的选别工艺,获得可以入炉再利用的粗铅精矿,取得良好的经济效益和社会效益。

For processing lead slag by mineral processing method, few studies have been reported at home and abroad due to its complexity, fine dissemination, easy crushing and easy overgrinding. Experimental tests on the lead slag from a Yunan smelting plant were carried out by the process of magnetic separation, flotation, gravity concentration and combined beneficiation to seek effective mineral processing technology. Test results show that the performance of magnetic separation is poor while that of flotation and gravity concentration is better. However, the recovery is low. As the composition of the slag is complex and the content of valuable elements in it is limited, flotation process is not economic due to its complexity and large reagent dosage. And thus gravity concentration is adopted in practical production to produce lead concentrate for smelting and the economic and social benefit of this process is great.