Latest Inventions  Chemistry METHOD OF PROCESSING SCANDIUM-CONTAINING SOLUTIONS
METHOD OF
PROCESSING SCANDIUM-CONTAINING SOLUTIONS
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
Kudrjavskij Ju.P.,
Anashkin V.S., Kazantsev V.P., Trapeznikov Ju.F., Smirnov A.L., Strelkov V.V.
Patent number: 2196184
Publishing date: March 12, 2003
To make the order on reception of the complete information under the invention, interesting for you
Back
| 
