铜精矿浸出脱镍及浸出液脱铜新工艺研究  

Study on new technology of leaching removal of nickel in copper ore concentrate and removal of copper in lixivium

作　　者：卢国俭[1] 李人宇[1] 孙德成[1] 朱来东[2] 汤德祥[1] 

机构地区：[1]连云港师范高等专科学校,江苏连云港222006 [2]西北矿冶研究院

出　　处：《无机盐工业》2010年第3期54-56,共3页Inorganic Chemicals Industry

摘　　要：通过实验确定了铜精矿氯化浸镍和浸出液脱铜的最佳工艺条件和工艺流程,重点研究了采用镍精矿脱除浸出液中的铜及如何通过提高镍精矿的活性来提高镍的回收率等问题,提出了加入多硫复合剂活化镍精矿除铜的方法。工艺简单、经济实用,浸出液脱铜率在99%以上,铜精矿浸出脱镍渣含镍质量分数可降至1.8%左右。实验中使用盐酸作为浸出剂,浸出速度快,镍浸出率高(>62%),铜的抑制性好。整个工艺未带入杂质离子,克服了传统硫化法、铁屑法、萃取法等试剂耗量大、成本高、操作困难和杂质含量高等不利因素。Optimum technological conditions and flow for removal of nickel in copper ore concentrate by leaching with hydrochloric acid and removal of copper in lixivium were confirmed in experiments. Problems, such as removal of copper in lixivium by nickel ore concentrate as well as how to improve the recovery of nickel by increasing activity of nickel ore concentrate were specially studied, and method of removal of copper by adding multi-sulfur eomplexing agent to activate nickel ore concentrate was proposed. Removal rate of copper in lixivium was above 99% and mass fraction of nickel in residue of leaching removal of nickel in copper ore concentrate reduced to about 1.8% ,which showed that this was a simple and economic method. Hydrochloric acid was used as leaching agent, which could bring a fast and high leaching rate of nickel （ more than 62% ） and a good inhibitive ability to copper. There were no impurities imported in the whole process and disadvantages of large consumption of reagents, high cost, difficult operation, and high impurity in traditional methods,such as curing method, iron chip method, and extraction method, were overcome.

关 键 词：铜精矿 浸出脱镍 浸出液脱铜 镍精矿 

分 类 号：TQ138.13[化学工程—无机化工]