If the material before crushing contains a large number of large ore, it will increase the crushing time of the material in the crushing chamber, and the capacity of ultrafine vertical mill will be reduced to a certain extent. If the material before crushing contains a lot of fine powder, the capacity of ultrafine vertical mill will be low.
Because these fine powders are easy to adhere, affecting the conveying and blanking. The pre screening of materials in advance, the screening of large and powdery materials for treatment, so that the material into the crushing chamber more in line with the design requirements of the impact, effectively improve the capacity of the impact.