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研究了二 ( 2 乙基己基 )磷酸 (DEHPA) 磺化煤油体系从氟碳铈矿氧化焙烧 硫酸浸出液中萃取Ce4 + 的机制 ,发现水相中F- 和Ce4 + 同时被萃入有机相 ,通过斜率法和研究平衡有机相中cF- cCd4 + 和初始水相酸度、初始水相氟离子浓度、有机相浓度之间的关系 ,推测出F- 和Ce4 + 以CeF2 A2 形式被DEHPA萃入有机相。
The mechanism of extracting Ce4 + from sulfuric acid leaching solution of bastnaesite by using DEHPA sulfonated kerosene was studied. It was found that F- and Ce4 + were simultaneously extracted into the organic phase through the aqueous phase, Slope method and the relationship between cF-cCd4 + and initial aqueous phase acidity, initial aqueous fluoride ion concentration and organic phase concentration in the equilibrated organic phase. It is inferred that F- and Ce4 + are extracted by DEHPA into the organic phase as CeF2A2 .