铅冰铜氧压浸出铜锌试验研究

为有效回收铅冰铜和烟灰中的铜铅锌资源,采用浮选试验和硫酸氧压浸出方法,探讨了回收铜、锌的可行性。研究表明:浮选分离铅冰铜中铜铅较为困难,而铅冰铜单独氧压浸出和铅冰铜与烟灰混合浸出均能取得较好的铜锌浸出效果,且混合处理指标更优。适宜条件下,铅冰铜单独浸出时,铜、锌浸出率达到88.25%和95.46%;铅冰铜与烟灰混合浸出时,铜、锌浸出率达到94.40%和99.65%。浸出液多次循环浸出,铜锌浸出率都能维持在83%以上,浸出液循环后溶液中铜锌浓度能满足后续工序要求。

Leaching copper and zinc from lead copper matte by pressure oxidative leaching

In order to recover the copper, lead and zinc resources in lead copper matte and soot effectively, the feasibility of recovering copper and zinc was discussed by flotation test and sulfuric acid pressure leaching method. The results have shown that it is difficult to separate copper and lead from lead copper matte by froth flotation, and the copper-lead leaching effect of lead copper matte alone and leaching of lead copper matte and soot can achieve better copper-zinc leaching effect, and the mixing treatment index is better. Under suitable conditions, the copper and zinc leaching efficiencies can reach 88.25% and 95.46% when the lead copper matte is leached separately. When the lead copper matte and soot are mixed and leached, the copper and zinc leaching efficiencies reach 94.40% and 99.65%, respectively. Even if the leachate is leached several times, and the copper and zinc leaching efficiency can be maintained above 83%. The concentration of copper and zinc in the solution after the cycle can meet the requirements of the subsequent process.