METHOD FOR GALLIUM REFINING Russian patent published in 2005 - IPC

Abstract RU 2246549 C2

FIELD: non-iron metallurgy, in particular gallium refining.

SUBSTANCE: crude gallium is converted to highly volatile gallium(I) oxide Ga2O by metal heating in presence of gallium(III) oxide Ga2O3 at 500-7000C in vacuum to provide a slop. Highly volatile gallium(I) oxide Ga2O is fed into disproportionation zone under the same conditions followed by disproportionation to form metal gallium and gallium(III) oxide Ga2O3 at 700-9000C Obtained slop is recycled to reuse by addition to starting crude gallium.

EFFECT: purified gallium with decreased content of Sn, Fe, Al, Si, Ni impurities; reduced waste; and low cost process.

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RU 2 246 549 C2

Authors

Kozlov S.A.

Sazhin M.V.

Petrukhin I.O.

Zhukova E.A.

Kuz'Min V.A.

Shpak V.A.

Galakhin V.M.

Klushin G.A.

Dates

2005-02-20Published

2003-02-04Filed