能源工程2026，Vol.46Issue(3)：78-83,6.DOI:10.16189/j.nygc.2026.03.010
煤气化粗渣中铬的浸出及萃取分离研究
Study on leaching and extraction separation of chromium from coal gasification residue
摘要
Abstract
In this study,the coal gasification slag is taken as the research object,after acid leaching,the valuable metal chromium was extracted and separated.In order to realize high efficiency extraction,a collaborative extraction system was designed and the extraction conditions were optimized.The optimized extraction technology was used to extract chromium from the acid leaching solution of coal gasification residue.The results showed that the optimum conditions for acid leaching were as follows:hydrochloric acid with a concentration of 4 mol/L as leaching reagent,a liquid-solid ratio of 10 ml/g,a time of 12 h,and an agitation rate of 600 r/min.A collaborative extraction system consisting of Di(2-ethylhexyl)phosphate and mono(2-ethylhexyl)2-ethylhexyl phosphate was designed and the technological parameters of manganese extraction were studied.When the extraction ratio(O/A)was 2:1,the pH was 6.05,Di(2,4,4-trimethylamyl)phosphonic acid extractant concentration was 25 vol.％,methyl isobutyl ketone extractant concentration was 30 vol.％,extraction time was 30 min,the extraction rate of chromium can reach 97.69％.关键词
煤气化粗渣/铬/酸浸/萃取Key words
coal gasification slag/chromium/acid leaching/extraction分类
化学化工引用本文复制引用
王丽琼,王磊,马玉龙..煤气化粗渣中铬的浸出及萃取分离研究[J].能源工程,2026,46(3):78-83,6.基金项目
宁夏自然科学基金创新群体项目(2022AAC01002). （2022AAC01002）
