高铅Zn焙砂两段浸出工艺提锌试验研究  

Experimental study on zinc extraction by two-stage leaching process of high lead Zn calcine

作　　者：袁晓磊 谢克强[1,2] 闫时雨 纪文涛 YUAN Xiao-lei;XIE Ke-qiang;YAN Shi-yu;JI Wen-tao(School of Metallurgy and Energy Engineering,Kunming University of Science and Technology,Kunming 650093,China;National Engineering Laboratory of Vacuum Metallurgy,Kunming University of Science and Technology,Kunming 650093,China)

机构地区：[1]昆明理工大学冶金与能源工程学院,昆明650093 [2]昆明理工大学真空冶金国家工程实验室,昆明650093

出　　处：《矿冶》2022年第1期70-76,90,共8页Mining And Metallurgy

基　　金：国家自然科学基金资助项目(51764033)。

摘　　要：以Pb含量为7.91%的高铅Zn焙砂为原料,采用中性浸出—酸性浸出两段酸浸工艺浸出该焙砂,使焙砂中的Zn进入到溶液,而Pb在渣中富集。探究了中性浸出、酸性浸出过程中温度、硫酸浓度、液固比、时间等工艺因素对锌浸出率和铅富集效率的影响。结果表明,在中性浸出过程中,Zn浸出率为90.73%,Pb在中浸渣中的富集含量为29.68%;中浸渣经酸浸处理,Zn浸出率可以达到98.60%,Pb在酸浸渣中的富集含量为36.54%。High-lead Zn calcine with Pb content of 7.91%is used as raw material.The calcine is leached by two-stage leaching process of neutral leaching and acid leaching.Zn in the calcine enters the solution while Pb is enriched in residue.This paper explored the influence of process factors such as temperature,acid concentration,liquid-to-solid ratio and time in the neutral leaching and acid leaching processes on the leaching rate of zinc and the enrichment efficiency of lead.The results show that the leaching rate of Zn is 90.73%,and the enrichment content of Pb in the intermediate leaching residue is 29.68%at the neutral leaching stage.After the acid leaching treatment of the intermediate leaching residue,the leaching rate of Zn can reach 98.60%,the enrichment content of lead in the acid leaching residue is 36.54%.

关 键 词：高铅Zn焙砂 中性浸出 酸性浸出 Zn浸出率 PB含量 

分 类 号：TF813[冶金工程—有色金属冶金]