刚果(金)水钴矿高压酸浸实验研究  

Test of High-pressure Acid Leaching of Congo( Kinshasa) Heterogenite

作　　者：郭秋松[1,2] 朱薇[1,2] 刘志强[1,2] 

机构地区：[1]广东省工业技术研究院(广州有色金属研究院),广东广州510650 [2]广东省稀土开发及应用重点实验室,广东广州510650

出　　处：《矿冶工程》2015年第5期107-109,共3页Mining and Metallurgical Engineering

基　　金：广东省科技计划项目(2012B010500023)

摘　　要：以刚果(金)水钴矿为原料,对其焙烧预处理后,采用高压酸浸方法获取浸出液,考察了硫酸浓度、液固比、浸出时间等因素对浸出过程中主元素及杂质元素浸出率的影响。研究结果表明:在硫酸浓度为0.2 mol/L、液固比为10∶1、浸出时间180 min的条件下,经高压浸出最终可获得钴、铜、镍、铁和镁浸出率分别为92.8%、96.7%、95.3%、2.3%和2.5%的浸出后液,较好实现了原料中高价值元素的高效回收以及与杂质铁、镁的初步分离。The Congo （Kinshasa） heterogenite pretreated by roasting was taken in the test of high-pressure acid leaching to obtain leaching solution, for investigating influences of sulfuric acid concentration, liquid-solid ratio and leaching time on the leaching rates of valuable elements and impurity elements. The results shows that with sulfuric acid concentration at 0. 2 mol/L, liquid-solid ratio of 10：1 and leaching time of 180 min, the leaching rates of cobalt, copper, nickel, iron and magnesium reach to 92.8%, 96.7%, 95.3%, 2.3% and 2.5%, respectively. The high-pressure acid leaching can realize efficient recovery of valuable elements and their preliminary separation from impurity elements such as iron and magnesium.

关 键 词：水钴矿 高压酸浸 钴 铜 镍 浸出率 

分 类 号：TF111[冶金工程—冶金物理化学]