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以某煤矿的煤矸石为研究对象,利用淋滤实验研究煤矸石中重金属的释放规律。分析淋滤液中5种重金属的含量,实验结果表明:Cr的释放量是最大,Zn最大释放量较为明显。Cd、Cu、Pb、Zn在浸泡中的最大释放率均大于在淋滤中的最大释放率,而Cr在浸泡中的最大释放率略小于在淋滤中的最大释放率外,这说明多数金属在浸泡中的浸出现象更为明显。
With coal gangue of a coal mine as the research object, the leaching experiment was used to study the release rule of heavy metals in coal gangue. The contents of five heavy metals in the leachate were analyzed. The experimental results showed that the release of Cr was the largest and the maximum Zn release was obvious. The maximum release rates of Cd, Cu, Pb and Zn in soaking were higher than those in leaching, while the maximum release rate of Cr in soaking was slightly less than the maximum in leaching, which indicated that most metals Leaching in immersion is even more pronounced.