Ore beneficiation use the first need, first they dissociation crushing methods are not enriched any beneficiation them. After crushing the ore, since the particle size becomes fine, and the interface between the different minerals cracked, had together with students of various minerals have a certain degree of separation, some of the particles containing only one mineral, called a monomer solution from grain; others several mineral particles or even students with white spoon, called Liansheng tablets.
In beneficiation experiments, testing the product beneficiation noted concentrate grade is low, high and medium-grade mineral tailings rate is high, is often caused by insufficient dissociation. Thus, crushing and grinding is essential before the sorting operation, it is sorting job preparation useful minerals dissociation of sufficiently large selected materials. Look on mineral organization, except for a few very coarse-grained disseminated ore, crushed ore that is just to get a significant number of monomer dissociation grain out, generally must go through grinding, to get a sufficiently high degree of dissociation. Crushing action is usually ready to feed the grinding, grinding is sufficient to reach the final step of dissociation.
Too coarse grinding mineral matter, since dissociation is not sufficient to elect the concentrate grade and recovery are poor. Too small and the there is no need, even harmful, since broken ore will happen is difficult to choose another fine particles. If more such particles, so that the production negative, that is, the ore is crushed excessively. Over crushed hazard is: fine particles more difficult to control, concentrate grade and recovery are poor, increase the machine’s wear and reduce the processing capacity of the equipment, broken ore white spoon useless power consumption increased. Over crushed white spoon occurs in the grinding process is serious, but from crushed ore has appeared. Thus, at the beginning of the broken ore should be crushed to prevent excessive compliance ‘without unnecessary white spoon crushing’ rules.
