Process for selective liquid-liquid extraction of germanium

Details Process for selective liquid-liquid extraction of germanium Process for selective liquid-liquid extraction of germanium

1982-01-04

1986-02-04

Doll, John

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Group iva metal

423 87, 423 99, 423139, C01G 1700

Patent

active

045685266

ABSTRACT:
A process for selective liquid-liquid extraction of germanium from an aqueous acidic liquor containing, besides germanium, at least one other metal selected from the group which comprises cadmium, zinc, cobalt, iron, arsenic and nickel. This process includes extracting germanium from said aqueous liquor by contacting said liquor with an organic medium containing a diluent and an extractant, said diluent being immiscible with said aqueous liquor. The major part of germanium passes from said aqueous liquor to an organic phase which is subsequently submitted to a stripping step by contacting with an alkaline medium, with formation of an aqueous phase containing the major part of germanium from said aqueous liquor.

REFERENCES:
patent: 3637711 (1972-01-01), Budde et al.
patent: 3883634 (1975-05-01), DeSchepper et al.
Cote et al., "Liquid-Liquid Extraction of Germanium with Oxine Derivatives", Hydrometallurgy, vol. 5 (Feb. 1980), pp. 149-160.
Marchon et al., "Some Typical Behaviours of the .beta.-Dodecenyl-8-Hydroxyquinoline Through its Reactions with Germanium (IV)", Journal of Inorganic and Nuclear Chemistry, vol. 41, No. 9 (1979), pp. 1353-1363.
Rudenko et al., "Extraction Kinetics of Germanium 8-Oxyquinolinate", Vestnik Moskovskogo Universiteta, Khimiya, vol. 24, No. 4, pp. 103-106, 1969.

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