从青海德尔尼铁帽矿和高硫半氧化矿中综合回收铜金铁  

Comprehensive Recovery of Copper,Gold and Iron From Gossan Ore and High-Sulfur Semi-Oxidized Ore in Derrni,Qinghai

作　　者：陈淑萍[1] 王春[1] 

机构地区：[1]紫金矿业集团股份有限公司低品位难处理黄金资源综合利用国家重点试验室,福建上杭364200

出　　处：《湿法冶金》2016年第4期311-315,共5页Hydrometallurgy of China

摘　　要：青海德尔尼铁帽矿和高硫半氧化矿较难分选,研究了采用焙烧—酸浸—氰化浸出工艺从中回收铜、金、铁。结果表明:在m(氧化矿)∶m(高硫半氧化矿)=1∶1、矿石粒度-75μm占81.5%、焙烧温度580℃、焙烧时间2h条件下对混合矿石进行焙烧,然后在液固体积质量比2∶1、体系初始酸质量浓度45g/L、浸出时间1h条件下从焙砂中浸出铜,铜浸出率达88.26%;对酸浸渣,用初始质量浓度2g/L的氰化钠溶液滚瓶浸出24h,金浸出率达85.43%,同时获得铁精矿。该研究为类似复杂氧化矿和半氧化矿的开发利用提供了新思路。The gossan ore and high-sulfur semi-oxidized ore in Derrni,Qinghai are very difficult to separate.By the processes of roasting-acid leaching-cyanide leaching to recovery Cu,Au and Fe were studied.The results show that the roasting optimum conditions are m（gossan ore）∶m（highsulfur semi-oxidized ore）of 1∶1,grain size of 81.5%for-75μm,roasting temperature of 580℃and roasting time of 2 h.The leaching rate of copper is 88.26% under the optimum conditions of V（liquid）∶m（solid）of 2∶1,initial acidity of 45g/L,acid leaching time of 1h.Acidic leaching residue is leached using sodium cyanide solution,gold leaching rate is 85.43% under the initial sodium cyanide concentration of 2g/L and leaching time of 24 h.The leaching residue is iron concentrate product.The results provide a new way for exploitation and utilization of similar complicated oxidize ore and highsulfur semi-oxidized ore.

关 键 词：铁帽矿 高硫半氧化矿 焙烧 酸浸 氰化 铜 金 回收 

分 类 号：TF803.21[冶金工程—有色金属冶金]