还原-中和沉淀-低酸浸出方法富集低浓度含锗浸出液中的锗  

Enrichment of Germanium in Low Concentration Germanium Containing Leaching Solution by Reduction-Neutralization Precipitation-Low Acid Leaching Method

作　　者：付维琴 刘俊场 邹维 牟兴兵 杨睿潇 王坤 乔子棽 FU Weiqin;LIU Junchang;ZOU Wei;MU Xingbing;YANG Ruixiao;WANG Kun;QIAO Zishen(Kunming Metallurgical Research Institute Company Limited,Kunming 650503,China)

机构地区：[1]昆明冶金研究院有限公司,昆明650503

出　　处：《有色金属工程》2024年第1期67-73,共7页Nonferrous Metals Engineering

基　　金：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);云南省重大科技专项计划项目(202202AB080005);云南省重点研发计划项目(202203AA080005)。

摘　　要：采用“还原-中和沉淀-低酸浸出”方法从低浓度含锗浸出液中高效富集锗,研究了还原中和沉淀和低酸浸出过程主要影响因素对锗分离富集的影响。结果表明,在硫化锌精矿用量为2 g/L、氧化锌烟尘用量为19 g/L、反应温度为80℃、还原时间为20 min、中和时间为240 min的条件下,锗沉淀率可达97.24%;在初始硫酸浓度为165 g/L、液固体积质量比为4 mL/g、浸出温度为60℃、浸出时间为60 min的条件下,锗浸出率可达98.78%。The method of reduction-neutralization precipitation-low acid leaching was used to efficiently enrich germanium from low concentration germanium leaching solution.The main influencing factors of reduction neutralization precipitation and low acid leaching on germanium separation and enrichment were studied.The results showed that under the conditions of zinc sulfide concentrate consumption of 2.0 g/L,zinc oxide dust consumption of 19 g/L,reaction temperature of 80℃,reduction time of 20 min,and neutralization time of 240 min,the germanium precipitation rate could reach 97.24%.Under the conditions of initial sulfuric acid concentration of 165 g/L,liquid-solid volume mass ratio of 4 mL/g,leaching temperature of 60℃,and leaching time of 60 min,the leaching rate of germanium could reach 98.78%.

关 键 词：还原 中和沉淀 硫酸浸出 锗 浸出液 

分 类 号：TF843[冶金工程—有色金属冶金] TF803.23