材料与冶金学报2026，Vol.25Issue(2)：152-158,182,8.DOI:10.14186/j.cnki.1671-6620.2026.02.007
富锡酸浸渣高压低酸选择性提铟工艺
High-pressure selective exstract of indium from stann-rich acid leaching residue at low acid system
摘要
Abstract
The indium has been selectively extracted from the stann-rich acid leaching residue generated from tin smelting dust after dearsenic-zinc extraction by oxygen pressure acid leaching in a high-pressure reactor with sulfuric acid.The high-pressure reactor can enhance the leaching effect and improve the leaching rate of tin and indium from the acid leaching residue,and the effects of reaction temperature,sulfuric acid concentration,oxygen partial pressure,solid-liquid ratio,and reaction time on the leaching rate of tin and indium have been systematically investigated.The results of ICP,XRD,and EDS show that at the reaction temperature of 180 ℃,sulfuric acid concentration of 0.55 mol/L,oxygen partial pressure of 0.2 MPa,solid-liquid ratio of 1∶3 and reaction time of 180min,the leaching rate of indium reaches as high as 92.88％,while the leaching rate of tin is only 0.71％.Zinc stannate disappears from the leaching residue,while tin is mainly retained in the form of tin dioxide,which could be returned in the tin smelting process as a tin-containing raw material.Compared to atmospheric pressure leaching,oxygen pressure leaching can achieve high leaching rates of indium metal at lower acidity levels,while minimizing the leaching of tin,providing a new approach for extracting indium from tin-containing dust.Furthermore,the residue from leaching that includes indium can be directly reintroduced into the tin smelting process.关键词
锡冶炼烟尘/铟浸出率/氧压浸出/锡铟分离Key words
tin smelting dust/leaching rate of indium/oxygen pressure leaching/separation of tin and indium分类
矿业与冶金引用本文复制引用
曹昕宇,肖发新,施善林,路文,杨翠霞,孙树臣,涂赣锋..富锡酸浸渣高压低酸选择性提铟工艺[J].材料与冶金学报,2026,25(2):152-158,182,8.基金项目
国家重点研发计划项目(2020YFC1909003). （2020YFC1909003）
