中文摘要：

为研究煤矸石中重金瘸Cu2＋的释放机理及影响其释放的关键因素，以煤矸石和CuS晶体为研究对象，研究两莆Cu2＋在不同pH条件下的静态溶出趋势，分析其相似性。实验结果表明：不同pH条件下1～5d时间内两者）的溶出具有显著影响，Cu2＋溶出速率在低pH条件下较高；Fe3＋促进Cu2＋的溶出。Cu溶出浓度．时间的拟合直线表明，实验中备环境对CuS晶体溶出以及对煤矸石Cu2．溶出趋势其有相似的影响作用，煤矸石在Fe3＋条件下遵循CuS溶出规律。说明酸性矿山废水的低pH和高Fe3＋与煤矸石重金属的溶出相互促进，提高pH和降低Fe3＋均有助于显著减少煤矸五中重金属硫化物的溶出释放。

英文摘要：

In the paper we use coal gangue and CuS crystal as objects of the study to discuss the heavy metal Cu2＋ release mechanism in coal gangue. We performed static leaching experiment of Cu at different conditions, by setting Fe3＋ in different pH environments. And the experimental time was one to five days. The experimental results show that, in the condition of low pH Cu2＋ dissolution rate increased obviously. Fe3＋ also can promote Cu2＋ dissolution yet Fea＋ had no significant effect. The concentration of Fe3＋ gradually decreased in the dissolution process of Cu2＋, and this phenomenon is particularly evident in coal gangue samples. Thus the dissolution behavior of Cu2＋ in coal gangue and CuS crystal are similar.