摘要
以韶关冶炼厂真空炉渣氧压浸出液为原料，以P204及Rex t-32为萃取剂萃取分离与富集锗组分，考察萃取有机相组成、酸度pH、萃取时间、相比等因素，对锗分离与富集效果的影响．研究结果表明：pH＝2．0，相比V （O）/V （W）＝1∶1，萃取10 min ，一次萃取锗萃取率达96．89％；富锗有机相用4mol/L氢氧化钠溶液反萃锗，相比V （O ）/V （W ）＝3∶1，反萃15 min ，经3级反萃后反萃液中锗含量为7．81 g/L，反萃率为95．37％（以渣计）；锗反萃液用1∶1硫酸中和，控制终点pH为8．0～8．5，可得到品位为37．62％的富锗料，锗沉淀率为90．51％．
The effects of organic phase composition ,pH ,extration time ,phase ratio on extraction and en-richment of germanium component were investigated using P204 and Rext-32 as extractant ,and the oxygen pressure leaching solution in vacuum furnace slag as raw material .The results showed that the germanium extraction rate of 96 .89% was obtained when pH value was at 2 .0 ,phase ratio （O/W） at 1∶1 and extrac-ting time for 10min ,and germanium-rich organic phase was stripped with 4N sodium hydroxide solution , with stripping time for 5min and phase ratio at 3∶1 ,germanium content in stripping solution was up to 7 .82 g/L after three-level stripping ,stripping rate was 95 .37% （in slag count ）;using the stripping solu-tion with 1∶1 sulfuric acid and controlling the end pH from 8 .0 to 8 .5 ,a grade of 37 .62% germanium-rich material with germanium precipitation being 90 .51% was obtained .
出处
《材料研究与应用》
CAS
2014年第1期52-56,共5页
Materials Research and Application
关键词
真空炉渣
氧压浸出液
锗
萃取
vacuum furnace slag
oxygen pressure leaching solution
germanium
extraction
