How to solve the problem of large Dust when use impact Crusher

Impact crusher is widely used in crushing industry because of its advantages of high crushing efficiency, convenient maintenance and low cost. However, in the process of crushing, the impact force between the machine and the stone is great, so a large amount of dust will be produced in the working process, resulting in some environmental pollution. So how do we solve the big dust problem of the impact crusher?
1.Aiming at the crusher, sealing cover can be used in the place where the amount of powder from the crusher is large, and the parts with large powder quantity can also be sealed in the whole small environment of the crusher. 2. Clean up the dust during the crushing process in time to avoid the re-pollution caused by the second lifting of the dust.
3. Can ensure that the material has a certain humidity and reduce the dust on the premise of not affecting the crushing.
4. Install the air exhaust system to store the air flow in the local dust environment, so as to reduce the dust