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贵州某铜尾矿铜金回收浮选试验
引用本文:刘豹,王梓,孙乾予,莽昌烨. 贵州某铜尾矿铜金回收浮选试验[J]. 金属矿山, 2015, 44(1): 157-160
作者姓名:刘豹  王梓  孙乾予  莽昌烨
作者单位:辽宁工程技术大学矿业学院,辽宁 阜新 123000
摘    要:贵州某铜尾矿-200目含量为40.17%,主要金属矿物有黄铜矿、黄铁矿、磁黄铁矿、斑铜矿,并伴生有少量的金、银。黄铜矿与黄铁矿、磁黄铁矿等共生关系密切,呈细粒、微细粒不均匀嵌布,部分粒度极细,难以单体解离;金主要为裸露金和黄铜矿包裹金。为了高效开发利用该二次资源,进行了铜金综合浮选回收试验。结果表明,在磨矿细度为-200目占80%的情况下采用1粗2精2扫、精矿2再磨至-325目占85%后2次精选、中矿顺序返回流程处理该试样,最终获得了铜、金、银品位分别为13.05%、18.75 g/t、229.62 g/t,铜、金、银回收率分别为58.70%、56.66%、43.72%的铜金精矿。

关 键 词:铜尾矿  综合回收  再磨  

Recovery Flotation of Copper and Gold from Copper Tailings in Guizhou Province
Liu Bao,Wang Zi,Sun Qianyu,Mang Changye. Recovery Flotation of Copper and Gold from Copper Tailings in Guizhou Province[J]. Metal Mine, 2015, 44(1): 157-160
Authors:Liu Bao  Wang Zi  Sun Qianyu  Mang Changye
Affiliation:College of Mining Engineering,Liaoning Technical University,Fuxin 123000,China
Abstract:For a copper tailing in Guizhou with fineness of 40.17% passing 200 mesh,its valuable minerals are mainly chalcopyrite,pyrite,pyrrhotite and bornite,with a small amount of gold and silver associated.Chalcopyrite,closely associated with pyrite,pyrrhotite,exists in fine or micro-fine form,some of which are too fine to be liberated.Gold mainly exists in form of natural gold or enclosed by chalcopyrite.In order to high-efficiently develop and utilize the secondary resources,the experiment on recovery of copper-gold is carried out.The results show that,at the grinding fineness of 80% passing 200 mesh,through the processes of one roughing-two cleanings-two scavengings,concentrate 2 regrounded to 85% passing 325 mesh and then through two cleanings,and middlings back to the flow-sheet in order,Cu-Ag concentrate with copper,gold,silver grade of 13.05%,18.75 g/t,229.62 g/t,and recovery of 58.70%,56.66%,43.72% is achieved respectively.
Keywords:Copper tailings  Comprehensive recovery  Regrinding
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