| 摘要 |
A method for the depression of non-sulfide, silicate gangue minerals is provided wherein the depressant is a polymeric material comprising recurring units of the formula: <IMAGE> wherein X is the polymerization residue of an acrylamide or mixture of acrylamides, Y is an hydroxy group containing polymer unit, Z is an anionic group containing polymer unit, x represents a residual mole fraction of at least about 35%, y represents a residual mole fraction of from about 1 to 50% and z represents a residual mole fraction of from about 0 to about 50%.
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