铜矿石粗磨优选工艺探索试验研究
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摘要
某矽卡岩型铜矿原矿含铜0.98%,试验研究通过采用混合用药、延长浮选时间及中矿再磨等工艺优化措施,实现了一段粗磨选矿。在一段磨矿细度-74μm55.2%、中矿再磨细度-74μm81.3%条件下,经"二粗二扫一精"浮选流程,获得铜精矿品位20.37%(Au9.04g/t;Ag93.27 g/t),铜回收率94.40% (Au71.85%;Ag71.78%)的选矿技术指标。
The copper grade are 0.98% of some skarncopper mine. A section of coarse grinding was realized since the experimental study was carried out by using mixed medicine, extended flotation time and re-grinding process optimization measures. The test results showed that under the conditions of grinding fineness-74μm55.2% and middling regrinding fineness-74μm81.3%. By adopting the flotation separation process of two-stage roughing, two-stage scavenging and one-stage cleaning, the final results showed that the grade and recovery rate of Cu in the concentrate were 20.37% and 94.40%, and the grade and recovery rate of Au(Ag) in the concentrate were9.04 g/t(93.27 g/t) and 71.85%(71.78%).
The copper grade are 0.98% of some skarncopper mine. A section of coarse grinding was realized since the experimental study was carried out by using mixed medicine, extended flotation time and re-grinding process optimization measures. The test results showed that under the conditions of grinding fineness-74μm55.2% and middling regrinding fineness-74μm81.3%. By adopting the flotation separation process of two-stage roughing, two-stage scavenging and one-stage cleaning, the final results showed that the grade and recovery rate of Cu in the concentrate were 20.37% and 94.40%, and the grade and recovery rate of Au(Ag) in the concentrate were9.04 g/t(93.27 g/t) and 71.85%(71.78%).
引文
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[2]刘小舟.我国重要有色金属资源-铜矿的现状及展望[J].西北地质,2007,10(1):83-88.
[3]吴文红,栾玲.不同给矿粒度组成对反浮选的影响研究[J].现代矿业,2014(4):30-31.
[4]胡熙庚,黄和慰,等.浮选理论与工艺[M].长沙:中南工业大学出版社,1991:84-85.
[5]任增,高惠民,等.不同嵌布粒度的鳞片石墨浮选速率研究[J].中国矿业,2017,26(7):116-120.
[6]袁源平,彭会清.提高永平铜矿选矿回收率的试验研究[J].金属矿山,2011(8):86-88.