METHOD FOR GALLIUM EXTRACTION Russian patent published in 2008 - IPC C22B58/00 C22B3/26 C25C1/22 

FIELD: metallurgy.

SUBSTANCE: invention concerns method of gallium extraction from aluminate mud. Method includes electrodialysis, in which solution for recapture containing gallium is subjected to electrodialysis for gallium concentration and acid extraction, stage of iron removal, when gallium is removed from concentrated solution, and stage of ultrafiltration, when iron-free gallium solution is neutralized. Received suspension of gallium hydroxide is subjected to ultrafiltration for suspension concentration. Then it is implemented stage of resolution, when concentrated suspension of gallium hydroxide is dissolved in alkaline solution, and electrolysis stage, when alkaline electrolytic solution of gallium received on stage of resolution is subjected to electrolysis for metallic gallium extraction.

EFFECT: providing of ability to reuse acid excluding waste acid generation commercially, increasing of gallium concentration in alkaline electrolytic solution of gallium, thereby increasing current efficiency on the electrolysis stage, and decreasing of spent solution quantity.

5 cl, 1 dwg, 2 tbl, 1 ex