利用生物浸出的方法实现废覆铜板分选渣中残留铜的资源化，主要研究Fe2+物质添加量、浸出时间、初始pH和渣投加量(固形物含量)等因素对不同来源废覆铜板渣中铜生物浸出的影响。结果表明：生物浸出铜过程中无需额外再添加Fe2+能源物质且能够短时间内(≤5 h)快速高效浸出不同来源分选残渣中的铜；初始pH和渣投加量对废覆铜板渣中铜浸出产生显著影响。优化结果表明：控制初始pH≤2.2，渣投加量20%~30%，无额外添加酸和Fe2+，两种分选残渣生物浸出5 h后，铜浸出率可达95%以上。
Recycling of the flotation tailings of waste copper-clad laminates was achieved by bioleaching method, the effects of Fe2+ re-addition, leaching time, initial pH and pulp density on the copper extraction were investigated. The results show that an effective copper extraction can be achieved without re-addition of Fe2+within 5 h. The initial pH and pulp density play important roles in copper extraction. Under the optimized condition of initial pH≤2.2 and pulp density 20%?30%, the Cu leaching rate is more than 95%in 5 h without re-addition of Fe2+and acid.
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