The Causes and Solutions of Rotary Vibrating Screen Mesh Blocking

Blocking reasons:

In normal operating conditions of rotaryvibrating screen due to various properties of the material and shape, it will produce a variety of different forms of blocking. The main blockage causes are as follows:

1. It contains a large number of particles close to the size of separation point;

2. High moisture content of materials;

3. Spherical particles or material has multiple points of contact with screen mesh;

4. Static electricity occurs;

5. The material has a fibrous characteristic;

6. Flaky grain contains more;

7. Due to the thick screen mesh holes or other shaped design is unreasonable, resulting in particles blocking phenomenon. Because most of the material particles is irregular, therefore, the reasons for the blocking is varied.

Solutions:

In order to effectively prevent blockage of the shaker screen, the following measures should be taken against the above sieve blockage causes:

1. When the material is fine-grained, clay content is more, and screen size is small, the moisture content on the screen blockage plays a decisive role;

2. When the material moisture content is greater than 5%, if there is no condition to dry the material, screen surface and screen mesh should be differential selected;

3.  When the water content is more than 8%, wet sieving should be used;
4.  If flaky grains contain more, we need to change the way the material crushing and granularity collocation of different crushing process.