Process for recovery of gallium

Electrolysis: processes – compositions used therein – and methods – Electrolytic synthesis – Preparing single metal

Reexamination Certificate

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C423S112000

Reexamination Certificate

active

10393297

ABSTRACT:
The present invention relates to a process for the recovery of gallium from Bayer process liquors. Bayer process liquor is obtained from alumina industries and contains 450 g/L Na2O, 80 g/L Al2O3and 190±20 ppm of gallium. The present invention utilizes an organic and inorganic phase for a two stage separation process to recover gallium with high purity.

REFERENCES:
patent: 4241029 (1980-12-01), Helgorsky et al.
patent: 4438078 (1984-03-01), Nalewajek
patent: 4844808 (1989-07-01), Sabot et al.
patent: 5204074 (1993-04-01), Pescher et al.
Product Data Sheet for VERSATIC 10, May 2002, pp. 1-3.
Puvvada G V K; “Liquid-Liquid . . . Surfactants”; Hydrometallurgy, Elsevier Scientific Publishing CY. Amsterdam, NL.; vol. 52; No. 1; Apr. 1999; pp. 9-19; XP004163142.

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