Phosphate Crushing and Grinding Plant

First, the purpose of phosphate crushing and grinding

Mining of ore from a large size, the largest particle size is generally about 500 mm. The fine-grained disseminated phosphate compounds, and with the gangue minerals and coexisting closely. Therefore, before sorting, the ore must be approved by crushing and grinding, so that the full dissociation of phosphate material.

Crushing and grinding size to be achieved, depending on size and phosphate compounds used in disseminated ore dressing method, phosphate rock flotation method is generally adopted. Disseminated apatite crystal size is generally 0.5 - 0.1 mm, more granular glial phosphate dip, generally in the 0.1 mm or less. Disseminated more fine grain size, the degree of grinding offerings should also be more detailed, or phosphorus-containing minerals and gangue minerals can not achieve the monomer separation, direct impact on the quality of selected points. Therefore, the crushing, grinding the ore must be carried out before the election to prepare sub-operations.

However, in production practice, not the fine ore crushing survived better. Because, first, survived fine ore crushing, power consumption and the greater the wear, processing costs to increase. Second, the ore crushing was too small,it is bound to generate a lot of fine mud, resulting in over smash, so this fine mud sub-process to influence the election and reduce the effect of selected points. Therefore, choose the right decision before fragmentation sub-grain size, it is technically and economically reasonable.

Second, the phosphate rock crushing and grinding stages

Due to the current technical and economic conditions, it can not be taken out from the bulk ore mine a direct election points before breaking into the size requirements, so breaking (or grinding) is carried out in stages.

Crushing, grinding is usually divided into the following phases:

coarse crushing secondary crushing fine crushing coarse grinding dissociation

Ore...