用M5640从锌氨溶液中萃取锌

庄子宇 魏昶 李兴彬 黄卉 罗兴国 邓志敢 李存兄

doi:10.12034/j.issn.1009-606X.217268

过程工程学报 >

2018 , Vol. 18 >Issue 1: 103 - 110

DOI: https://doi.org/10.12034/j.issn.1009-606X.217268

反应与分离

用M5640从锌氨溶液中萃取锌

庄子宇魏昶李兴彬黄卉罗兴国邓志敢李存兄

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昆明理工大学冶金与能源工程学院，云南昆明 650093

收稿日期: 2017-06-27

修回日期: 2017-09-25

网络出版日期: 2018-01-29

基金资助

战略有色金属非传统资源清洁高效提取的基础研究;湿法炼锌浸出渣与高铁锌精矿协同浸出及相互作用机理研究;新型Lewis酸碱复合;压力场下高硅氧化锌矿高温酸转化及硅沉淀机理研究;从氧化锌矿氨性浸液中协同萃取锌的应用基础研究

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Extraction of Zinc from Zinc Ammonia Solution by M5640

Ziyu ZHUANG Chang WEI Xingbin LI Hui HUANG Xingguo LUO Zhigan DENG Cunxiong LI

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Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming, Yunnan 650093, China

Received date: 2017-06-27

Revised date: 2017-09-25

Online published: 2018-01-29

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摘要

以M5640为萃取剂，在CO2协同作用下，从氨?硫酸铵溶液中萃取锌，考察了萃取剂浓度、总氨浓度、相比、温度、加入CO2等因素对锌萃取率的影响. 结果表明，M5640在氨性溶液中对锌有一定的萃取能力，溶液pH值和总氨浓度对锌的萃取率影响较大，向溶液中加入CO2可明显提高M5640对锌离子的萃取能力. 在温度25℃及M5640加入量35vol%、相比O/A=2、锌离子浓度18.02 g/L、总氨浓度3 mol/L、加入CO2的条件下，锌的单级萃取率由不加CO2时的65.1%提升至97%以上，两级错流萃取锌萃取率达99.9%. 萃取得到的有机相不含氨，表明加入CO2可避免氨的共萃.

关键词： 剂萃取; M5640; 氨性溶液; 锌

本文引用格式

庄子宇魏昶李兴彬黄卉罗兴国邓志敢李存兄 . 用M5640从锌氨溶液中萃取锌[J]. 过程工程学报, 2018 , 18(1) : 103 -110 . DOI: 10.12034/j.issn.1009-606X.217268

Abstract

Zinc was extracted from ammonia?ammonium sulfate solution using M5640 as an extractant. By the synergistic effect of CO2, the effects of extractant concentration, total ammonia concentration, phase ratio, temperature and addttion CO2 on the extraction rate of zinc were examined. The results showed that M5640 had a certain extraction ability to zinc from ammonia solution, and the pH value of solution and total ammonia concentration had obvious influence on the extraction rate of zinc. In the extraction process, add CO2 into solution can obviously improve the extraction efficiency of zinc. Under the conditions of temperature 25℃, M5640 concentration 35vol% O/A phase ratio of 2, zinc concentration 18.02 g/L, the total ammonia concentration in the solution 3 mol/L, with addition of CO2, zinc extraction rate increased from 65.1% (without CO2) to above 97%, by two stage cross-current extraction, zinc extraction rate reached 99.9%. The organic phase without ammonia, the results indicated that addition of CO2 can avoid co-extraction ammonia.

Key words： Solvent extraction; M5640; Ammonia solution; Zinc

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