[1] Crystal grain size, content and grinding fineness of minerals
Since pulverization dissociation is the main way of dissociation of minerals, its completion is mainly by means of the reduction of the volume of pulverized particles. Therefore, the larger the mineral crystal grain size, the smaller the grinding fineness, and the better the mineral dissociation. The effect of mineral content is mainly reflected in the role of the mineral process particle size. Because the higher the content of minerals in the ore, the more opportunities there are for the same kind of mineral aggregates, the resulting aggregate process size must be both large and large. By monomer is meant comminuted particles containing only one mineral. Therefore, minerals with a large process size are easily dissociated. In terms of the effect of mineral volume on dissociation, the process particle size is more important than the crystal grain size.
The effects of crystal size, content and grinding fineness on dissociation, Gordon based on his dissociation model, quantified the results of ore crushing of P and G minerals with large particle size. The results are shown in Table 2. -11-1 and Figure 2-11-4.
It can be seen from Table 2-11 - 1 and Figure 2-11-4:
[1] If the fineness of the grinding is not less than the grain size of the mineral, the mineral phase with a lower content will not be produced by the monomer;
[2] Only when the grinding fineness is significantly smaller than the mineral crystal size, a lower content of the mineral phase (P) will have a certain amount of monomer;
[3] If the grinding fineness is larger than the crystal grain size, then only when the ΦV value is high, the content is more
Only a significant amount of substantially stable monomer is produced in the mineral phase;
(4) In any case, the high content of minerals (G) will always have more monomers than the lower content of minerals [P].
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