to improve the efficiency of the host, and high power consumption and high consumption of crushed material grinding operations to avoid 'unnecessary fragmentation' crusher often operates in conjunction with a sieve Sand Making Machine , grinding machines must be joint work with the classifier. Set in pre-screening crushing section, this section may be material in the crushed material without pre-screening can reduce the amount into the crusher to the ore and reducing unnecessary fragmentation. And after the crushing and screening can be set up to check the material meet the requirements of this paragraph return defective grain size crusher broken again, check the screening settings can strictly control the crushed product size. Check the settings screen and return screening not only increase mining equipment, space and construction costs also increased, it is usually only the strict requirements of the size of crushing operations before use. Crushing and broken usually provided only pre-screening, if the production capacity of crushing machine and the broken machine wealthy, can not set up a pre-screening, because of pre-screening devices also increases the cost of equipment and the loss of space height. Granularity of grinding requirements more stringent than the crushing and grinding machine itself has no ability to control product particle size (rod mill has a particle size control Sand Making Machine , you can open grinding), because, outside the mill to be set grader control grinding fineness, ie closed-circuit grinding. Henan Mining Machinery Co., Ltd. supply complete sets of processing equipment, free for you to design the beneficiation process, welcome to visit to buy.