| 摘要 |
Low molecular weight copolymers of the general structure: <IMAGE> where R1 and R2 are hydrogen or methyl, X is hydrogen, alkali metal or ammonium ion, and a, m and n are such that the degree of hydrolysis is from 5 to 66% and the total molecular weight of the copolymer is between 200 and 85,000, are used to depress sylvinite minerals in a flotation system. These copolymers can be combined with other known depressing agents for non-sulfide ores, such as starch, dextrin, gum and the like, to obtain equivalent or improved selectivity and recovery than would be obtained using these depressants alone. <IMAGE> |
