某难选金矿浮选工艺优化研究及应用  

Research and Practice on Optimization of Flotation Process in a Refractory Gold Mine

作　　者：彭科淇 周瑞仙 PENG Keqi;ZHOU Ruixian(Guizhou Zijin Mining Co.,Ltd.)

机构地区：[1]贵州紫金矿业股份有限公司,贵州省贞丰县562200

出　　处：《现代矿业》2022年第9期107-110,122,共5页Modern Mining

摘　　要：某难选金矿浮选回收率仅为80.95%,尾矿金品位高达1.0 g/t,为提高浮选工艺指标,强化损失金回收,开展了浮选药剂制度优化试验及中矿再磨工艺优化试验。试验结果表明:碳酸钠、硫酸铜、丁基黄药+丁铵黑药及2#油的药剂用量分别为5000,500,470+250,100 g/t时,联合中矿再磨工艺可获得的金精矿品位17.63 g/t、尾矿金品位0.74 g/t、金回收率83.31%。优化后工艺浮选指标显著提升,金精矿品位提高1.22 g/t,尾矿金品位降低0.26 g/t,金回收率提高2.36个百分点,经济效益显著。The flotation recovery rate of a refractory gold mine is only 80.95%,and the gold grade of tailings is as high as 1.0 g/t.In order to improve the flotation process index and strengthen the recovery of lost gold,the optimization test of flotation reagent system and the optimization test of middle ore regrinding process were carried out.The test results show that when the dosage of sodium carbonate,copper sulfate,butyl xanthate+ammonium dibutyl dithiophosphate and 2#oil is 5000,500,470+250,100 g/t respective⁃ly,the gold concentrate grade of 17.63 g/t,tailings gold grade of 0.74 g/t and gold recovery of 83.31%can be obtained by the combined middling regrinding process.After optimization,the flotation index of the pro⁃cess is significantly improved,the gold concentrate grade is increased by 1.22 g/t,the gold grade of tail⁃ings is reduced by 0.26 g/t,the gold recovery rate is increased by 2.36 percentage points,and the econom⁃ic benefit is remarkable.

关 键 词：金矿 浮选 药剂制度 中矿再磨 回收率 尾矿品位 

分 类 号：TD953[矿业工程—选矿] TD923