赞比亚谦比希硫化铜矿的浮选药剂制度优化
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摘要
谦比希铜矿以硫化铜矿为主,由于矿石性质发生改变,采用现有工艺的浮选指标受到负面影响。针对这一问题,以谦比希西矿体矿石为研究对象,采用一段粗选开路浮选流程浮选,对药剂制度进行优化,并通过闭路浮选试验对优化结果进行验证。结果表明,黄药类捕收剂对该矿石浮选效果最好,其中异丙基黄药选择性较强,而丁基黄药具有更好的捕收能力。在磨矿细度为-0.074mm占70%,氧化钙用量600g/t,丁基黄药40g/t,松醇油25g/t的最优药剂制度下,经一次粗选、三次精选、两次扫选的闭路浮选,所得最终精矿的铜品位27.51%、回收率90.65%,浮选指标良好。
Copper sulphide minerals are major copper-bearing minerals in the Chambishi copper mine.Due to changes in the nature of ore deposits,the flotation index of recovering copper become worse.Aiming at this problem,flotation experiments were conducted to improve and optimize the copper recovery of copper sulfide ore from Chambisch copper mine.A closed-circuit flotation flowsheet with one roughing,three cleaning and two scavenging was adopted to verify the optimum flotation reagent regime.The results show that the flotation effect of xanthate collectors is the best,in which isopropyl xanthate has a relative stronger selectivity and butyl xanthate presented a better collecting ability.The flotation index of closecircuit test was achieved under the optimum conditions:600 g/t of CaO,butyl 40 g/t of xanthate(BuX)and 20 g/t of pine camphor oil.The copper grade of flotation concentrate is 27.51%,and the copper recovery is 90.65%,which proved that the flotation reagents optimized process can obtain better recovery effect.
Copper sulphide minerals are major copper-bearing minerals in the Chambishi copper mine.Due to changes in the nature of ore deposits,the flotation index of recovering copper become worse.Aiming at this problem,flotation experiments were conducted to improve and optimize the copper recovery of copper sulfide ore from Chambisch copper mine.A closed-circuit flotation flowsheet with one roughing,three cleaning and two scavenging was adopted to verify the optimum flotation reagent regime.The results show that the flotation effect of xanthate collectors is the best,in which isopropyl xanthate has a relative stronger selectivity and butyl xanthate presented a better collecting ability.The flotation index of closecircuit test was achieved under the optimum conditions:600 g/t of CaO,butyl 40 g/t of xanthate(BuX)and 20 g/t of pine camphor oil.The copper grade of flotation concentrate is 27.51%,and the copper recovery is 90.65%,which proved that the flotation reagents optimized process can obtain better recovery effect.
引文
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[2]张苺.2010年前世界铜矿开发和供应前景[J].国土资源情报,2005(7):48-53.
[3]赵福刚.铜矿的选矿技术进展[J],铜业工程,2006(4):13-18.
[4]李忠武.铜矿资源进口贸易中存在的风险及防范对策[J].世界有色金属,2017(19):133-134.
[5]邹小龙.当前铜矿地质勘查中的问题及对策[J].中国金属通报,2017(5):67-68.
[6]郭宏宇,刘曙光.中国企业“走出去”发展探索---以中国有色集团投资赞比亚为例[J].中国经贸,2012(7):68-71.
[7]赵兴国.赞比亚谦比希铜矿床地质特征[J].地质与勘探,2010,46(1):183-190.
[8]朱海宾,张东红,肖波,等.赞比亚铜带省谦比希铜矿地质及矿床成因研究[J].矿产与地质,2016,30(1):19-23.
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[10]张瑞洋.鞍山式铁矿石分选尾矿中铁的回收试验研究[D].沈阳:东北大学,2011.