METHOD OF PROCESSING SCANDIUM-CONTAINING SOLUTIONS Russian patent published in 2003 - IPC

FIELD: technology of scandium recovery from solutions; applicable in selective recovery of scandium from wastes of production of aluminum (red mud), titanium (used melts), zirconium, tin, tungsten, uranium. SUBSTANCE: method of processing scandium-containing solutions from leaching of wastes and/or middlings of production processes includes sorption from sulfuric acid solution on anionite treated with sulfuric acid solution; sorption of scandium by phosphorus-containing ionite; subsequent washing of ionite; desorption of scandium and processing of eluate. Sorption is carried out on slightly-basic anionite treated with solution of sulfuric acid with concentration of 150-500 g/cu.dm. Slightly basic anionite is based on polyethylene-polyamines, 3-chlorine-1,2-epoxypropane and ammonia with general formula . Sorption is conducted from solutions containing 150-500 g/cu. dm of sulfuric acid. Desorption from slightly basic anionite is carried out with solution of hydrochloric acid. EFFECT: increased anionite sorption load by titanium and increased degree of scandium cleaning from titanium. 3 cl, 1 tbl