METHOD FOR EXTRACTION OF GALLIUM FROM ALUMINATE-ALKALINE SOLUTIONS IN THE PRODUCTION OF ALUMINA FROM ALUMINIUM-CONTAINING ORES

摘要

The starting aluminate-alkaline solutions are subjected to two-stage carbonization with stirring and the production of hydrate of aluminum oxide, a gallium-containing precipitate, and solutions containing caustic and bicarbonate alkali, thereafter the produced gallium-containing precipitate is mixed with a solution containing caustic alkali to achieve a content of gallium in the solution of 0.05 to 1 g/l, the prec