新疆某浸染状氧化铜镍矿选冶联合试验研究  

Beneficiation-metallurgy Combined Process for the Disseminated Copper-nickel Oxide Ore in Xinjiang

作　　者：柏亚林[1] 杨俊龙[1] 郭艳华[1] 王军 何海涛[1] BAI Yalin;YANG Junlong;GUO Yanhua;WANG Jun;HE Haitao(Northwest Institute of Mining and Metallurgy,Baiyin 730900,Gansu,China;Baiyin Xindafu Technology Chemical Co.Ltd,Baiyin 730900,Gansu,China)

机构地区：[1]西北矿冶研究院,甘肃白银730900 [2]白银新大孚科技化工有限公司,甘肃白银730900

出　　处：《矿产保护与利用》2023年第1期105-111,共7页Conservation and Utilization of Mineral Resources

基　　金：国家重点研发计划项目(2019YFC1907300);白银市科发[2021]39号(2021-1-9G)。

摘　　要：新疆某浸染状氧化铜镍矿含铜0.89%、镍0.55%,为了开发利用该矿产资源,对其矿石性质进行了详细的研究,结果表明,该矿石工业类型属于超基性岩风化壳型铜镍矿,铜主要以孔雀石、硅孔雀石形式存在,镍主要赋存于绿泥石中。铜、镍氧化率分别为74.16%、96.57%,矿石风化严重,含泥量较大,属于难选氧化铜镍矿。在矿石性质研究的基础上,对矿石进行了浮选、搅拌浸出、池浸等方案对比试验研究,采用池浸回收铜、镍效果较好。当磨矿细度为-0.074 mm占45%、矿浆质量浓度为20%、硫酸用量为50 g/L、浸出时间为24 d时,铜浸出率可达81.27%、镍浸出率为60.32%;对铜镍浸出液采用铁置换沉铜—中和除铁—硫化法沉镍,可以获得海绵铜品位92.05%、铜置换率为97.35%,硫化镍中镍品位为24.32%、镍沉淀率为86.78%。最终铜的回收率为79.12%,镍的回收率为52.35%,实现了铜、镍的有效回收。本研究可为该矿山的开发利用提供技术依据,也可为同类型氧化铜镍矿石开发利用提供参考。The disseminated copper-nickel oxide ore in Xinjiang contained 0.89%copper and 0.55%nickel.An in-depth study of the ore properties was carried out to develop and utilize this mineral resource.According to the results,the industrial type of ore belonged to ultrabasic rock weathering crust type copper-nickel ore,and copper was mainly in the form of malachite and chrysocolla,and nickel was mainly exsited in chlorite.The oxidation rates of copper and nickel were 74.16%and 96.57%respectively.The ore was severely weathered and contained large mud,which belonged to a refractory copper-nickel oxide ore.Based on the study of ore properties,comparative tests of flotation,agitation leaching and pool leaching were carried out.The results showed that the recovery of copper and nickel by pool leaching was better.When the grinding fineness was-0.074 mm accounting for 45%,the pulp concentration was 20%,sulfuric acid dosage was 50 g/L and leaching time was 24 d,the copper leaching rate was 81.27%and the nickel leaching rate was 60.32%.The copper-nickel leaching solution was treated by a method of copper replacement with iron-iron neutralization-nickel precipitation with sodium sulphide,and the sponge copper grade was 92.05%,copper replacement rate was 97.35%,nickel grade in nickel sulfide was 24.32%,and nickel precipitation rate was 86.78%.Finally,the recovery rate of copper was 79.12%,and the recovery rate of nickel was 52.35%.The process serves as a technical basis for the development and utilization of the mine,as well as a reference for the development and utilization of the same type of copper-nickel oxide ore.

关 键 词：氧化铜镍矿 选冶联合 池浸 铜镍分离 

分 类 号：TD952.1[矿业工程—选矿] TD954