Jaw Crusher is the best choice of the sandstone production line. In the sandstone production line, jaw crusher is usually used in the primary crushing of mineral. Compared with common mineral crushing machine, Jaw crusher can crush mineral that own high hardness and large size.

　　To reduce the dust caused by air leakage of shell. In the practice, water is added on the entrance of the crusher. It is actually a wrong measure which can aggravate the filter bag and paste bag of bag type dust collector of jaw crusher and the blocking of the feeder.

　　During the falling of mineral on belt conveyor, the air and material is put into the airtight dust removal cover. The air that contains dust spread outside through the crack and hole of cover. In addition, due to the improper install of dust removal point on the corner of belt conveyor, the operation and cease of dust removal machine have no influence on the lower belt conveyor. Since the begging of the operation of Jaw crusher, the dust removal operation hasn’t been stopped and the lower belt conveyor is under the dust pollution.

　　When the material in jaw crusher contains high humidity, the feeder is easy to be blocked. Therefore the ventilation resistance of bag type dust collector is increased greatly. The descend of draft power ability is the very reason of the abrasion of jaw crusher.