METHOD OF EXTRACTING SCANDIUM FROM TECHNOGENIC SOLUTIONS OF URANIUM, NICKEL, COPPER PRODUCTION

摘要

1. A method for extracting scandium from industrial solutions comprising extracting scandium solid extractant, subsequent re-extraction, characterized in that the extraction is carried out on the solid obtained by synthesis of styrene-divinylbenzene extractant and di-2-ethylhexyl phosphoric acid as a solid porous granules of 0.4- 0.9 mm - TVEKS-D2EHPA and having higher properties: mechanical strength, adsorption capacity and selectivity of scandium. ! 2. A method according to claim 1, characterized in that the extraction of scandium performed at t = 20-40 ° C from sulfuric acid solutions produced during the extraction and refining of copper, nickel, uranium and other ores, and before extraction TVEKS saturated sulfuric acid solution, equal in concentration to technogenic solution. ! 3. A method according to claim 1, characterized in that re-extraction of scandium TVEKS produced 2-4 mol / l HF solution at a ratio of aqueous and organic phases of 1: 1 to afford the final product - scandium fluoride.