Abstract: Phosphates abilities in diaspore and kaolinite flotation were studied. Sodium hexametaphosphte(SHMP) at low concentration has greater depressive ability to kaolinite than that to diaspore, and the normal desilication flotation of bauxite can be realized, while when SHMP is in high concentration, it has much stronger depressive ability to diaspore than that to kaolinite. The antiflotation is expected to gain success. The mechanism of SHMP in separating kaolinite from bauxite was discussed through phosphatic solution chemistry, ζ-potential changes of diaspore and kaolinite in the absence or presence of SHMP, measuring surface phosphate concentration on diaspore and kaolinite and microphotograph of mineral particles in the solution
Influences of phosphates on diaspore and kaolinite flotation
Abstract:
Phosphates abilities in diaspo re and kaolinite flotation were studied. Sodium hexametaphosphte(SHMP) at low conc entration has greater depressive ability to kaolinite than that to diaspore, and the normal desilication flotation of bauxite can be realized, while when SHMP i s in high concentration, it has much stronger depressive ability to diaspore tha n that to kaolinite. The anti-flotation is expected to gain success. The mechan ism of SHMP in separating kaolinite from bauxite was discussed through phosphati c solution chemistry, ζ -potential changes of diaspore and kaolinite in the absence or presence of SHMP, measuring surface phosphate concentration on diasp ore and kaolinite and microphotograph of mineral particles in the solution.
图3 (NaPO3)6的用量、 矿浆pH值对 一水硬铝石浮选的影响(十二胺: 3×10-4 mol/L) Fig.3 Flotation recoveries of diaspore in different concentrations of SHMP vs pH (dodecyl-amine: 3×10-4 mol/L)
图4 (NaPO3)6的用量、 矿浆pH值对 高岭石浮选的影响(十二胺: 3×10-4 mol/L) Fig.4 Flotation recoveries of kaolinite in different concentration of SHMP vs pH (dodecyl-amine: 3×10-4 mol/L)
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