N503萃取分离铁铟的研究

对真空炉锗渣经氯化蒸馏提锗后的蒸馏残液进行了萃取研究,以N503为萃取剂,研究了残液的酸度、萃取相比、有机相组成、萃取时间等因素对铟、铁萃取率的影响.结果表明,在有机相组成为φ(N503)=50%,φ(异辛醇)=10%,φ(煤油)=40%,W/O相比为3:1,震荡及静止时间均为5 min条件下,当萃取残液酸度为3.4 ...

Study on separation of indium and iron by extraction with di(1-methyl-heptyl)acetamide(N503)

Experiment on In/Fe extraction of lixiviated liquid from chlorination distilled vacuum furnace germanium residue was studied.With N503 as the extractant,the influence of extraction feed acidity,extraction phase ratio(V/V),organic phase composition and extraction time on In/Fe extraction efficiency was examined.The results showed that under the conditions of organic phase being φ(N503)=50%,φ(isooctanol)=10% and φ(kerosene)=40%,W/O=3:1 and both shaking time and standstill time being 5 minutes,and when extraction feed acidity was 3.4mol/L,in which In was 2045mg/L and Fe was5201mg/L,the extraction rate of Fe reached above 98% and the separation ratio of In and Fe was over 5000 by 3-stage countercurrent extraction process.