红土镍矿浸出液除杂制备氢氧化镍

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聂超群^1,2，王旭滨²，李博^1,2*，魏永刚¹，王华²

1. 昆明理工大学省部共建复杂有色金属资源清洁利用国家重点实验室，云南昆明 6500932. 昆明理工大学冶金节能减排教育部工程研究中心，云南昆明 650000

收稿日期:2018-11-02修回日期:2018-12-26出版日期:2019-08-22发布日期:2019-08-15
通讯作者:李博

基金资助:低品位高含水硅镁型红土镍矿干燥与预还原机理及协同机制

Impurity removal from leaching solution of laterite nickel ore and preparation of nickel hydroxide

Chaoqun NIE^1,2, Xubin WANG², Bo LI^1,2*, Yonggang WEI¹, Hua WANG²

1. State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming University of Science and Technology, Kunming, Yunnan 650093, China2. Engineering Research Center of Metallurgical Energy Conservation & Emission Reduction, Ministry of Education, Kunming University of Science and Technology, Kunming, Yunnan 650000, China

Received:2018-11-02Revised:2018-12-26Online:2019-08-22Published:2019-08-15
Contact:LI Bo

摘要/Abstract

摘要： 以低品位硅镁型红土镍矿硫酸浸出液为原料，用黄钠铁矾[Na2Fe6(SO4)4(OH)12]除铁、NaF除镁、中和沉镍，考察了不同因素的影响。结果表明，添加4 mL/L双氧水对浸出液氧化预处理、用Na2SO4为除铁钠源、控制溶液pH为1.6?2.2、反应时间1.5 h的条件下，铁去除率达92.1%，镍损失率为6.7%，滤渣主相为Na2Fe6(SO4)4(OH)12；除铁后滤液用NaF除去镁离子，最优条件为搅拌速率300 r/min、溶液pH=5.5?6.0及NaF 用量25 g/L，镁去除率达90.9%，镍损失率为6.8%；除杂后净化液用中和水解法提镍，在室温下添加8 g/L NaOH为沉镍剂，中和沉镍提取率达95.1%，得到纯度99.5%的Ni(OH)2产品，镍的综合回收率为82.70%。

引用本文

聂超群王旭滨李博魏永刚王华. 红土镍矿浸出液除杂制备氢氧化镍[J]. 过程工程学报, 2019, 19(4): 721-727.
Chaoqun NIE Xubin WANG Bo LI Yonggang WEI Hua WANG. Impurity removal from leaching solution of laterite nickel ore and preparation of nickel hydroxide[J]. Chin. J. Process Eng., 2019, 19(4): 721-727.

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