Process for the recovery and purification of germanium from zinc

Details Process for the recovery and purification of germanium from zinc Process for the recovery and purification of germanium from zinc

1976-07-08

1978-05-23

Vertiz, O. R.

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

75 86, 423 92, 423 98, C01G 1702, C01G 1704

Patent

active

040908712

ABSTRACT:
The invention provides a process for recovering germanium as germanium oxide from a germaniferous metallic zinc which involves distilling the germaniferous metallic zinc under non-oxidizing conditions, recovering the distillation residue which contains the germanium, leaching the recovered distillation residue with chlorine water to convert the germanium into germanium tetrachloride, hydrolyzing the germanium tetrachloride into germanium oxide, and recovering the germanium oxide. Optionally, the germanium oxide may be reduced to metallic germanium, if desired.

REFERENCES:
patent: 1905460 (1933-04-01), Gamichon
patent: 2767052 (1956-10-01), Harner et al.
patent: 2786750 (1957-03-01), Inagaki
patent: 2835569 (1958-05-01), Reynaud et al.
patent: 2920951 (1960-01-01), Bretschneider et al.
patent: 3981962 (1976-09-01), Smyres et al.
Gable, "Extraction of Germanium From Germanium-bearing Spelter-retort Residues," Rec. Trav. Chim. 52, 225-228 (1933).

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