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采用"硫酸沉铅—中和—P204萃取提锌—硫酸反萃"工艺净化处理铅电解废液,重点考察P204煤油体系萃取提锌、硫酸反萃及萃取反萃循环过程。结果表明,按照相比1∶1.5单级萃取的萃取率可达99%左右,3mol/L硫酸单级反萃锌反萃率基本可达100%。9次萃取反萃循环试验后,锌富集浓度可达33g/L,负载有机相锌反萃率达到99.49%,锌直收率可达88.24%。
Abstract：The process of lead precipitating with H2SO4,neutralization,zinc extraction with P204,stripping with H2SO4 was proposed for lead electrolyte purification.The process of zinc extraction with P204+kerosene system,back extraction with H2SO4 and cyclic process of extraction-back extraction were investigated emphatically.The results show that the single stage extraction rate is about 99% on condition of O/A=1/1.5.Back extraction rate of zinc single stage is about 100% with 3 mol/L H2SO4.The enriched zinc concentration is 33 g/L,zinc stripping rate reaches 99.49%,and zinc total recovery rate is about 88.24% after 9 times extraction-back extraction cyclic process.
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基本信息:
中图分类号:TF813
引用信息:
[1]何静,王涛,黄玲,等.铅电解废液除锌工艺研究[J].有色金属(冶炼部分),2012(07):12-15.
基金信息:
国家自然科学基金资助项目(51174240); 广东省产学研资助项目(20100908)
2012-07-12
2012-07-12