Abstract:

Sodium hexametaphosphate influence in flotation on dropping ash content and its impact on settling situation of flotation tailings are investigated in this paper by means of Zeta potential, IC (Ion Chromatography), flotation test, free settling experiment. The results show sodium hexametaphosphate added in flotation can drop the concentrate ash content and increase its yield. However, with an increase of sodium hexametaphosphate adding, water hardness of flotation tailing decreases ,surface electronegativity of ultrafine-mud particles enhances and sedimentation velocity of flotation tailings reduces.

Key words: sodium hexametaphosphate, flotation, settling, Zeta potential, solion