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某铜矿提铜降硅试验研究
- 黄一东
- 作者单位：
- 江西理工大学资源与环境工程学院
基金项目：
- isnull
详细信息：
- 作者简介：
- 黄一东（1982—），男，高级工程师，从事有色金属矿选冶技术研究工作；E-mail：115088282@qq.com
- 通讯作者：
- isnull
- PDF下载
Experimental study on copper recovery and silicon reduction in a copper ore
- English Author：
- School of Resource and Environmental Engineering,Jiangxi University of Science and Technology
- Unit：
- 摘要
- 在线预览
- 参考文献
摘要:
某铜矿经选别后所得铜精矿含SiO2约26 %，SiO2品位过高会增加后续冶炼成本，但提高铜品位、降低SiO2品位可能会降低铜回收率。为了能够更好地提铜降硅，开展了试验研究。结果表明：随着再磨细度的提高，SiO2品位呈下降趋势，铜品位呈上升趋势，铜回收率呈先上升后趋于平稳趋势；在磨矿细度-0.074 mm占75 %，再磨细度-0.023 mm占85 %条件下，采用一粗二扫三精的闭路试验流程，可获得铜品位23.40 %，含SiO2 12.40 %，铜回收率89.42 %的铜精矿。
关键词:
铜精矿；回收率；二氧化硅；浮选；粗精矿再磨
Abstract:
The copper concentrate obtained after separation of a copper ore approximately contains 26 % SiO2,and an excessive SiO2 content can increase subsequent smelting costs.However,increasing the copper grade and reducing the SiO2 content may lower the copper recovery rate.In order to better recover copper and reduce silicon content,experimental research was conducted.The results show that with the increase in regrinding fineness,the SiO2 content decreases,the copper grade increases,and the copper recovery rate first rises and then tends to stabilize.Under the conditions of grinding fineness -0.074 mm accounting for 75 % and regrinding fineness -0.023 mm accounting for 85 %,adopting a closed-circuit test process of one roughing,three cleaning,and three scavenging,a copper concentrate with a grade of 23.40 % and SiO2 content of 12.40 % was obtained,with a copper recovery rate of 89.42 %.
Keywords:
copper concentrate;recovery rate;silicon dioxide;flotation;regrinding of roughing concentrate
