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摘要
以甲基异丁基酮(MIBK)为萃取剂,采用溶剂萃取法净化湿法磷酸。探索了萃取过程中操作温度、操作相比和原料磷酸浓度对萃取效果的影响;考察了洗涤过程中洗涤酸浓度、洗涤酸用量对杂质离子脱除效果的影响;确定了反萃过程中去离子水的用量对磷酸反萃率的影响。分别确定了萃取、洗涤、反萃过程的适宜操作条件。
Abstract
Wet-process phosphoric acid (WPA) is purified via solvent extraction method with methyl isobutyl ketone (MIBK) as extractant.The effects of operating temperature,operating ratio and raw phosphoric acid concentration on the extraction efficiency are explored,the effects of the concentration and amount of washing acid on the removal of impurity ions are investigated,and the effect of the amount of deionized water on the stripping rate of phosphoric acid is determined.Suitable operating conditions for extraction,washing and stripping processes are respectively determined.
关键词
萃取
/
甲基异丁基酮
/
湿法磷酸
/
反萃
/
洗涤
Key words
extraction
/
methyl isobutyl ketone
/
wet-process phosphoric acid
/
back extraction
/
washing
溶剂萃取法净化湿法磷酸实验研究[J].
现代化工, 2022, 42(S2): 283-286 DOI:10.16606/j.cnki.issn0253-4320.2022.S2.056
