本文已被:浏览 967次 下载 795次
投稿时间:2019-08-22 修订日期:2019-08-27
投稿时间:2019-08-22 修订日期:2019-08-27
中文摘要: 采用P204萃取含氟、氯的锌浸出液,锌萃取率大于95%,反萃率高于99%,回收率高于98%,氟、氯脱除率均高于99%。P204萃取锌浸出液的工艺条件为:皂化率65%、锌料液pH=4.0、萃取温度40 ℃、相比O/A=2、萃取时间5 min。锌电解废液反萃锌的工艺条件为:H2SO4 120 g/L、反萃温度40 ℃、相比O/A=0.5、反萃时间5 min。萃取、反萃温度控制在40~45 ℃,可避免出现有机相乳化和分相时间长等问题。串级试验萃余液含锌2.42 g/L、氟0.52 g/L、氯1.42 g/L,经沉氟、沉氯处理后,氟、氯浓度分别降低到0.042 g/L、0.079 g/L,可返回锌冶炼系统配入浸出、净化使用。
Abstract:Fluorine and chlorine were removed from zinc leaching solution by P204 extraction. Zinc extraction efficiency is 95% above, stripping efficiency is 99% above, and recovery efficiency is 98% above. Fluorine and chlorine removing efficiency is both over 99%. The optimum extraction conditions include saponification efficiency of 65%, zinc feed liquid pH=4.0, extracting temperature of 40 ℃, O/A=2, and extracting time of 5 min. The optimum stripping conditions include H2SO4 concentration of 120 g/L, temperature of 40 ℃, O/A=0.5, and stripping time of 5 min. Organic phase emulsification and long time phase separation can be avoided under temperature of 40-45 ℃. Concentration of Zn, F, Cl in raffinate of cascade test is 2.42, 0.52, and 1.42 g/L, respectively. F and Cl concentration drops to 0.042 g/L and 0.079 g/L after precipitating. The raffinate can be reused in zinc leaching and solution after precipitating.
文章编号: 中图分类号: 文献标志码:
基金项目:广西科技厅重点研发计划项目(桂科AB16380013)
作者 | 单位 | |
罗远辉* | -有研工程技术研究院有限公司,北京 | lyhm68@163.com |
袁学韬 | -有研工程技术研究院有限公司,北京 | |
韦志伟 | -南丹县南方有色金属有限责任公司 | |
扬明学 | -南丹县南方有色金属有限责任公司 | |
农娜 | -南丹县南方有色金属有限责任公司 |
Author Name | Affiliation | |
LUO Yuan-hui | - GRIMAT Engineering Institute Co,Ltd,Beijing ,China | lyhm68@163.com |
YUAN Xue-tao | ||
WEI Zhi-wei | ||
Yang Ming-xue | ||
Nong na |
引用文本:
罗远辉,袁学韬,韦志伟,扬明学,农娜.P204萃取脱除锌浸出液中氟氯[J].有色金属(冶炼部分),2020(3):12-16.
LUO Yuan-hui,YUAN Xue-tao,WEI Zhi-wei,Yang Ming-xue,Nong na.Removal of Fluorine and Chlorine from Zinc Leaching Solution by P204 Extraction[J].Nonferrous Metals (Extractive Metallurgy),2020(3):12-16.
罗远辉,袁学韬,韦志伟,扬明学,农娜.P204萃取脱除锌浸出液中氟氯[J].有色金属(冶炼部分),2020(3):12-16.
LUO Yuan-hui,YUAN Xue-tao,WEI Zhi-wei,Yang Ming-xue,Nong na.Removal of Fluorine and Chlorine from Zinc Leaching Solution by P204 Extraction[J].Nonferrous Metals (Extractive Metallurgy),2020(3):12-16.