Recovery of germanium from aqueous solutions by solvent extracti

Details Recovery of germanium from aqueous solutions by solvent extracti Recovery of germanium from aqueous solutions by solvent extracti

1988-08-29

1990-04-10

Stoll, Robert L.

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Group iva metal

25218212, 2521823, 252364, 423 24, 423 87, 423 99, 423112, 423139, C01G 1700

Patent

active

049159194

ABSTRACT:
An improved method for selectively rcovering Ge from acidic solution containing Ge and typically Zn, As, Cd, Sb, In, Cu and Fe (II) by multistage, countercurrent liquid-liquid extraction is described. The extractant used in the organic phase is an oxime, for example, 5,8-diethyl-7-hydroxy-6-dodecanone oxime, mixed with at least one alkylphosphoric acid, for example either di-2-ethylhexyl phosphate alone or admixed with mono-2-ethylhexyl phosphate, dissolved in a hydrocarbon diluent. This mixed system shows better efficiency and selectivity for germanium than known systems using either oximes or alkylphosphoric acids separately.

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Tian, Runcang; Zou, Jiayan; Zhou, Lingzhi: New Technology for Indium, Germanium and Gallium Recovery in an Electrolytic Zinc Plant, Miner. Process, Extr. Metall., Pap. Int. Conf., 1984, 615-24.

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