Electrolytic extraction of gallium from alkali metal aluminate including two-stage carbonatation
CA 1136086 A · Owner: Gosudarstvenny Nauchno-Issledovatelsky I Proektny Institut Redkometallicheskoi Promyshlennosti "Giredmet" · Inventors: Zazubin, Arkady I.; Butorin, Leonid M.; Fedorin, Petr V.
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Its claims, description and drawings are in the Canadian Patents Database.
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Alkali metal aluminate solutions are subjected to two-stage carbonatation with stirring to produce aluminium hydroxide, a gallium-containing precipitate and, solutions containing caustic and alkali metal bicarbonate. Thereafter the produced gallium-containing precipitate is mixed with a solution containing caustic alkali until the content of gallium in the solution is 0.05 to 1 g/l. Any precipitate formed is separated and the solution enriched with gallium is mixed with a solution containing alkali metal bicarbonate. The resulting mixture is subjected to evaporation to separate alkali metal compounds and the solution, which has been subjected to evaporation is carbonated to produce a …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted November 23, 1982. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 23, 1999.
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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.