湿法冶金2024，Vol.43Issue(5)：538-542,5.DOI:10.13355/j.cnki.sfyj.2024.05.009
单宁锗渣酸洗制备高品位锗精矿试验研究
Preparation of High-grade Germanium Concentrate by Acid Pickling of Tannic Germanium Residue
摘要
Abstract
In view of the problems of low impurity removal rate and low grade of germanium concentrate in the washing process of tannin germanium residue,the As,Zn and Fe impurities in tannin germanium residue were effectively removed by washing with dilute sulfuric acid solution.The effects of sulfuric acid mass concentration,washing temperature and washing time,liquid volume to solid mass ratio on the removal rate of As,Zn and Fe impurities and Ge loss rate were investigated.The results show that under the conditions of sulfuric acid mass concentration of 60 g/L,liquid volume to solid mass ratio of 5 mL/1 g,washing temperature of 60 ℃,first washing time of 120 min,second washing and third washing time of 60 min,the cumulative removal rates of As,Zn and Fe can reach over 88％,97％and 95％,respectively.Ge cumulative loss rate is less than 1.50％.The Ge and As grades of germanium concentrate prepared by three-stage countercurrent pickling and oxidation roasting process are 34.45％and 0.54％,respectively,which meet the tertiary standard of germanium concentrate.关键词
单宁锗渣/酸洗/砷/铁/锌/锗/锗精矿Key words
tannic germanium residue/acid picking/arsenic/iron/zinc/germanium/germanium concentrate分类
矿业与冶金引用本文复制引用
付维琴,乔子棽,张候文,刘俊场,李衍林,牟兴兵,杨大锦,赵红梅,杨睿潇,王坤..单宁锗渣酸洗制备高品位锗精矿试验研究[J].湿法冶金,2024,43(5):538-542,5.基金项目
云南省科技人才与平台计划-技术创新人才培养对象项目(202305AD160053) （202305AD160053）
云南省重大科技专项计划项目(202202AB080005) （202202AB080005）
云南省重点研发计划项目(202203AA080005). （202203AA080005）
