A PROCESS FOR THE EXTRACTION OF GALLIUM FROM SODIUM ALUMI NATE LIQUORS BAYERLIQUOR OBTAINABLE FROM ALUMINA PRODUCIN G PLANTS

摘要

A process for extraction for gallium from sodium aluminate liquors (Bayer liquor) obtainable from alumina producing plats which consists in electrolysis of sodium aluminate liquor containing approximately 200-300 mg of gallium/litre together with 300-400 g/1 of sodium hydroxide and a vanadium content of less than 20 mg/1 using a nickel plated mild steel as anode and sodium amalgam with about 0.5% sodium as cathode and is characterised in that the cathodic current density is 1.6 to 2 A/gmSUP2/SUP.