摘要
以某铜矿山硫化矿尾矿为试样,采用静态浸泡方法,通过改变浸泡体系温度、上层溶液和矿样层高度、矿层截面积,以及向溶液表面充气和在体系中添加浮选药剂等,进行了环境因素对硫化矿尾矿库中Cu2+、Zn2+、Pb2+、Cr3+溶出之影响的模拟试验。通过试验得出以下推断:硫化矿尾矿库重金属离子溶出的危害在气温较高的南方比在北方严重,在夏季比在冬季严重;尾矿库内覆盖尾矿的积水深度或面积越大,越容易使重金属离子溶出;尾矿库中尾矿积存得越厚,Zn2+越容易溶出,而Pb2+、Cu2+、Cr3+则越不容易溶出;尾矿库积水表面发生较大扰动时,会加重重金属离子的溶出;浮选药剂影响尾矿库中重金属离子的溶出,但情况较为复杂。
The influence of the environmental factors on the release of Cu^2＋, Zn^2＋ , Pb^2＋ , Cr^3＋ out of the tailings of a copper sulfide mine was investigated by static soaking experimental method through altering the temperature of the soaking system, upper layer solution and ore sample layer height and ore layer cross - section and blowing air into the solution surface and adding flotation agent to the system, It is deduced from the test results that, in terms of heavy metal ion release, the environmental danger from the sulfide ore tailing reservoirs in North China could be more serious than that in South China, and that in summer more serious than in winter. The larger the accumulated water depth or area covering the tailings in the reservoir, the easier the heavy metal ions will be released; the thicker the tailing deposited in the reservoir, the easier Zn^2＋ will be released while the more difficult Pb^2＋ , Cu^2＋ and Cr^3＋ will be released. The great disturbance to the water surface of the tailing reservoir may enhance the release of heavy metal ions and the flotation reagent will also affect their release but the conditions are rather complex.
出处
《金属矿山》
CAS
北大核心
2008年第6期108-111,115,共5页
Metal Mine
基金
国家自然科学基金项目(编号:50564003)
广西青年科学基金项目(编号:桂科青0007008)
关键词
硫化矿尾矿
重金属
离子溶出
环境因素影响
静态浸泡
Sulfide mine tailings, Heavy metals, Ion release, Environmental factors, Static soaking
