用堆浸法从某选镍尾矿中回收镍的试验研究  

Experimental study of nickel recovery from nickel tailings by heap leaching

作　　者：王宇斌[1] 雷大士 彭祥玉[1] 张小波[1] 张威 

机构地区：[1]西安建筑科技大学材料与矿资学院,陕西西安710055 [2]河南洛阳栾川钼业集团股份有限公司,河南栾川471500

出　　处：《中国有色冶金》2017年第3期67-70,共4页China Nonferrous Metallurgy

基　　金：陕西省科技厅基金项目(2014SJ-04)

摘　　要：某选镍尾矿镍品位为0.35%,其氧化率较高,属难选矿石。试验研究了采用碎磨-堆浸-沉淀工艺从尾矿中回收镍,考察了试料粒度、硫酸用量、浸出时间、浸出温度和液固比等对镍浸出率的影响,在矿石粒度-0.074 mm占65%、硫酸用量160 g/L、浸出时间56 h、浸出温度60℃、液固比3:1的条件下,镍的浸出率为61.11%。The nickel grade in some tailings after the nickel separation is 0. 35% and the oxidation rate is high, be- longing to refractory ore. The process of crushing and grinding-heap leaching-precipitation is adopted for nickel re- covery from tailings, the impact of experimental conditions such as particle size, sulfuric acid consumption, leac- hing time, leaching temperature and liquid-solid ratio on the leaching rate of nickel is studied. The leaching rate of nickel is 61. 11% under the condition of particle size of 65% -0. 074 mm, sulfuric acid consumption of 160 g/L, leaching time of 56 h, leaching temperature of 60 ℃ , and liquid-solid ratio of 3： 1.

关 键 词：选镍尾矿 氧化率 堆浸 

分 类 号：TD926.4[矿业工程—选矿] TF815[冶金工程—有色金属冶金]