Solvent extraction recovery process for indium

Details Solvent extraction recovery process for indium Solvent extraction recovery process for indium

1980-06-27

1981-09-29

Carter, Herbert T.

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Group iiia metal or beryllium

423100, 423139, 423DIG14, 423 89, 75101BE, C01G 1500

Patent

active

042922844

ABSTRACT:
Indium is recovered effectively from an aqueous leached solution containing indium ions, together with other ions such as ferric ions, zinc ions, etc. if any, by adjusting the pH of the aqueous solution to 0.25-4.5, extracting the indium ions from the aqueous solution with an organic solvent solution formed by diluting an extraction reagent containing a monoalkylphosphoric acid and/or a dialkylphosphoric acid and a trialkylphosphoric acid in 1:2-5 by volume ratio with a phase-stabilizing water-immiscible organic solvent and then back-extracting the indium ions in the organic solvent solution with an aqueous sulfuric acid solution.

REFERENCES:
Golinski, "Proceedings of the International Solvent Extraction Conference", vol. 1, 1971, paper #55, Soc. of Chemical Industry, London.
Levin et al., "Doklady Academii Nauk SSSR", vol. 139, 1961, pp. 158-159, (pp. 1-5 of translation).
Duyckaerts et al, "Proceedings of the International Solvent Extraction Conference", vol. 1, 1977, pp. 73-86.

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