White corundum powder The screening requirements for particle size and particle composition are very strict, and the material left on the sieve is larger than the size of the sieve hole becomes the sieve feeding, and the material passing through the sieve hole becomes the sieve feeding.
1. The humidity of the material。
In production, because the white corundum powder frit is watered and cooled, it sometimes makes the grinding powder clump and difficult to sieve. The material must be dried before screening;
2. Parameters of the screen。
(1) Within the appropriate range, the width of the screen is proportional to the production efficiency, and the screen length is proportional to the screening efficiency, and the screening time is determined;
(2) The screen should not be too long, which is not allowed by the screening machine manufacturing and is not economical.
3. Screen quality.
(1) The quality of the screen directly affects the effect of screening and the quality of white corundum powder;
(2) The screen hole and sieve wire are required to be uniform, and its size should meet the provisions of the screen standard, and the effective area should be as large as possible;
(3) The strength of the wire should be high, there is no weaving defect, so that the screen has a long service life.
Each level of white corundum powder, no matter how narrow the particle size range, there is always a particle size, and the ratio of the largest particle to the smallest particle in each level becomes the grading ratio.