Mixtures of organic phosphonates and anionic polymers to improve acid extraction of uranium

摘要

A method of improving the acid leaching of uranium ores which comprises adding to such ores while they are being leached between 0.01-2 lb. per ton of a composition comprising:PPa. aminotris methylene phosphonic acid, andPPb. a water-soluble copolymer of vinyl sulphonic acid and acrylic acid combined in a weight ratio of from 2:1 to 1:2 and having a molecular weight within the range of from 500 to 100,000,PPwith the weight ratio of a:b being within the range of 1:2 to 2:1.