摘要
研究了采用P204(二(2-乙基己基)磷酸酯)从浮选铅尾矿硫酸浸出净化液中萃取锌,优化了萃取和反萃取工艺条件,并通过富锌液蒸发结晶制备了ZnSO_(4)·7H_(2)O。结果表明:在有机相组成为50%P204+50%磺化煤油、P204皂化度65%、萃原液pH=3.5、相比V_(A)/V_(O)=1/1、萃取时间10 min和萃取级数为二级条件下,锌萃取率可达99.11%;萃取所得饱和有机相在反萃剂(H_(2)SO_(4))浓度7%、反萃相比V_(O)/V_(A)=2/1、反萃取时间10 min和反萃取级数为三级条件下,锌反萃率可达99.32%。制备的ZnSO_(4)·7H_(2)O满足HG/T 2326—2015要求,其微观形貌以颗粒状和层状结构均匀分布。
The extraction of zinc by P204(Di-(2-ethylhexyl)phosphate)from sulfuric acid leaching purification liquid of flotation lead tailings was studied.The extraction and stripping conditions were optimized.ZnSO_(4)7H_(2)O was prepared by evaporation and crystallization of zinc-rich liquid.The results show that under the conditions of organic phase composition of 50%P204+50%sulfonated kerosene,saponification degree of P204 of 65%,extract pH of 3.5,extraction phase ratio V_(A)/V_(O)=1/1,extraction time of 10 min and two stages of extraction,the extraction rate of zinc can reach 99.11%.Under the conditions of H_(2)SO_(4)concentration of 7%,stripping phase ratio V_(O)/V_(A)=2/1,stripping time of 10 min and three stages of stripping,the stripping rate of zinc can reach 99.32%.The prepared ZnSO_(4)7H_(2)O Can meet the requirements of HG/T 2326—2015,and its microstructure is uniformly distributed in granular and layered structures.
作者
郭拴全
康敏
郭梅
宁新霞
GUO Shuanquan;KANG Min;GUO Mei;NING Xinxia(Xi′an Northwest Nonferrous Geological Research Institute Co.,Ltd.,Xi′an 710054,China;Shaanxi Engineering and Technology Research Center for Comprehensive Utilization of Mineral Resources,Xi′an 710054,China)
出处
《湿法冶金》
北大核心
2025年第1期111-117,共7页
Hydrometallurgy of China
关键词
浮选铅尾矿
萃取
P204
七水硫酸锌
硫酸浸出
锌
flotation of lead tailings
extraction
P204
zinc sulfate heptahydrate
sulfuric acid leaching
zinc
作者简介
第一作者:郭拴全(1991-),男,硕士,工程师,主要研究方向为冶金。
