| abstract |
The invention relates to a method for producing a scandium-containing concentrate from the wastes of alumina production and extracting high-purity scandium oxide from the same. Provided is a method for producing a scandium-containing concentrate from a red mud, wherein the Sc2O3 content therein is least of 15 wt. %, the TiO2 content not more than 3 wt. %, the ZrO2 content not more than 15 wt. %, and wherein scandium in the concentrate is in form of a mixture of Sc(OH)3 hydroxide with ScOHCO3.4H2O. Also provided is a method for producing high-purity scandium oxide, with a purity of approximately 99 wt. %. |