The effect on ultra-fine flotation of Pt-Pd and serpentine ore for slime coating

Studies of slime coating on coarse particles for Cu-Ni sulphide containing Pt and Pd had been made. The adhesion between slime of serpentine and penlandite and other gangue existed. Sometimes, the slime can be reported in the concentrate by mechanical type, which may be removal relatively easy, but slime coating on coarse particle may be difficult to removal. Since the adhesion of ultra-fine was bigger than the gravitational force, which can depend on:① the nature of slime; ②the roughness on the surface on the coarse particles; ③the oxidation and "patches" on the surface.