氯化铁溶液浸出低冰镍提取镍铜的研究  

Study on the extraction of nickel and copper from low ice nickel matte in ferric chloride solution

作　　者：宁志强 唐子瑞 刘家辉 王露 朱飞晓 NING Zhiqiang;TANG Zirui;LIU Jiahui;WANG Lu;ZHU Feixiao(School of Metallurgy,Northeastern University,Shenyang 110819,China)

机构地区：[1]东北大学冶金学院,沈阳110819

出　　处：《有色金属科学与工程》2022年第3期43-48,共6页Nonferrous Metals Science and Engineering

基　　金：国家重点基础研究发展计划(973计划)项目(2014CB643405)。

摘　　要：利用三价铁离子(Fe^(3+))的氧化性,采用氯化铁溶液浸取低冰镍,提取其中的镍、铜元素。本研究考察了浸出液固比、浸出温度、浸出时间、氯化铁溶液浓度对镍和铜浸出率的影响。动力学研究表明:氯化铁溶液浸出低冰镍时,镍元素的浸出过程由化学反应控制,铜元素的浸出过程由混合反应控制,经计算镍的浸出活化能为70.26 kJ/mol、铜元素的浸出活化能为38.62 kJ/mol。低冰镍和浸出渣的物相分析结果表明,浸出反应发生时,低冰镍中的硫元素被氧化成单质硫。本研究避免了传统工艺中的含硫气体污染问题。The oxidation of trivalent iron ions was utilized to extract nickel and copper from a low ice nickel matte in ferric chloride solution.In this study,the effects of the liquid-solid ratio,leaching temperature,leaching time and ferric chloride solution concentration on the leaching rates of nickel and copper were investigated by single-factor tests and orthogonal experiments.The kinetic study shows that the leaching process of nickel in ferric chloride solution is controlled by a chemical reaction,while the leaching process of copper is controlled by mixing.The calculated leaching activation energies of nickel and copper are 70.26 kJ/mol and 38.62 kJ/mol,respectively.In addition,the phase analysis of low-ice nickel and leaching residue shows that the sulfur element in low-ice nickel is oxidized to elemental sulfur when the leaching reaction occurs.Furthermore,the problem of sulfur-containing gas pollution in traditional processes is avoided.

关 键 词：低冰镍 氯化铁 浸出 硫 

分 类 号：TF811[冶金工程—有色金属冶金]