Deng Tong; Huang Lijuan; Fu Li
Source Publicationchinesejournalofchemicalengineering
AbstractA novel extractant mixture, di-2-ethylhexyl phosphate (DEHPA) plus HX, was propose and tested for recovering gallium from sulfate solution.It was found that the extraction capacity of DEPHA for gallium from sulfate solution could be enhanced significantly due to the synergistic effect of acidix extractant HX. Gallium extraction is negligible below pH 0 and highly sensitive to pH of aqueous phase in the range from 0 to 1, and satisfactory extraction can be gained at pH>1. More than 96% Ga extraction was obtained using 15% DEHPA plus 2% HX. Although Fe(Ⅲ) was found to be extracted preferentially to Ga (Ⅲ), effective extraction of Ga (Ⅲ) was possible by reducing ferric to the ferrous state prior to extraction. A loaded organic phase containing 0.48g·L^-1 Ga could be produced from solution of 0.12g·L^-1 Ga at A/O ratio of 4:1 via three mixer-settler operation stages. Gallium was stripped quantitatively from the loaded organic phase with 1.5mol·L^-1 of sulfuric acid.
Document Type期刊论文
First Author Affilication中国科学院过程工程研究所
Recommended Citation
GB/T 7714
Deng Tong,Huang Lijuan,Fu Li. synergisticextractionofgalliumforsulfatesolution[J]. chinesejournalofchemicalengineering,2002,010(001):112.
APA Deng Tong,Huang Lijuan,&Fu Li.(2002).synergisticextractionofgalliumforsulfatesolution.chinesejournalofchemicalengineering,010(001),112.
MLA Deng Tong,et al."synergisticextractionofgalliumforsulfatesolution".chinesejournalofchemicalengineering 010.001(2002):112.
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