Calcareous phosphate rock dressing method

Phosphorus fine ore is a crystalline silicate, carbonate apatite fine grain cemented together, lattice Ca2 + can be Mg, ion Mn, Sr, Na, K, Sn and other elements is replaced Phosphate ions can also be replaced by other anionic groups to change the surface properties. This type of phosphate ore accounts for more than 85% of the total reserves of phosphate rock in the country. The apatite inlay is very fine, and it is difficult to dissociate from the monomer of gangue minerals, and the gangue mineral contains not only silicate minerals but also white clouds. calcite and apatite these mineral impurities can be floating relatively close, it becomes complicated and difficult separation.

Generally, positive-reverse flotation, reverse-positive flotation (first use of H2SO4 or H3PO4 to inhibit phosphorus minerals, anionic collector reverse flotation of dolomite and other carbonate minerals, and then inhibition of silicic acid with lime, Na2CO3, Na2SiO3, etc. Salt minerals with anionic collectors are flotation phosphate minerals) or double reverse flotation (first with H2SO4 or H3PO4 to inhibit phosphorus minerals, anionic collectors for reverse flotation of dolomite and other carbonate minerals, then the pulp is removed The beneficiation process of the cation minerals after the mud is reversed by the cation collector, the first two processes are not easy to obtain a good separation effect, and the latter has a relatively good sorting effect.

For phosphate rock with weathered or muddy minerals, the phosphate rock should be wiped off, such as the Hubga Concentrator in Morocco. In addition, for the mixing of more surrounding rock or lean phosphate ore in the mining process, the combined mineral processing process of heavy medium cyclone-flotation can be used first, that is, by adjusting the medium density in the case of coarse grain size. The lower-density large-grained gangue increases the P2O5 grade of the ore into the ore to reduce the cost of ore dressing.

The pin mill consist of hopper,fixed discs,rotating discs,motor,dust collector  (optional),control box and other related parts.It makes use of the high speed relative  movement of the movable fixed disc and the rotating disc to crush the materials through the comprehensive effect of striking and friction of the fluted disc as well as the mutual striking of the materials. the crushed