含锗铜烟灰综合回收工艺

Germanium-containing copper dust comprehensive recovery process

Abstract

The present invention provides a germanium-containing copper dust comprehensive recovery process. While common valuable elements in copper dust are recovered, recovery of germanium is added. Techniques are adopted comprehensively. For example, a jarosite process is used for separation of iron and a tanning process is used for sediment. The most appropriate treating methods are adopted according to properties and characteristics of materials, and thus the recovery rate of germanium is higher than 70%. The advantages of the recovery process are that the acid leaching effect is the best; loss of the germanium is the smallest; impacts of iron on germanium extracting are removed; the extracting efficiency of germanium is raised, and thus economic benefit is enhanced.
本发明提供一种含锗铜烟灰综合回收工艺,在回收其中的常用有价元素的同时,增加了对锗的回收,综合的采用了铁矾法除铁、丹宁法沉渣等工艺,根据物料的性质和特征采用最合适的处理方法,使锗的回收达到了70%以上;优点为:酸性浸出的效果达到最佳;锗的损失达到最小;消除了铁对锗提取的影响;提高锗的提取效率,增加了经济效益。

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