Fine sand has a wide range of applications and can be used in industries such as construction and smelting as a quick solvent and fracturing sand. With the continuous upgrading of industry standards, the demand for sand accuracy is also increasing. When screening fine sand, traditional screening equipment may encounter clogging problems during the production process. So, what factors cause clogging and what methods do we have to solve it? Below, the editor will summarize the reasons and solutions that affect fine sand clogging.

Fine sand vibrating screen

1、 Factors causing blockage of fine sand vibrating screen

1. Raw material factors

Fine sand particles are small and easily agglomerate due to moisture, viscosity, or electrostatic effects, causing clogging of sieve holes. If there are a lot of impurities such as mud and fibers, it will also increase the risk of pore blockage.

2. Screen factor

The aperture design of the sieve is unreasonable, such as the aperture being too small or the pore shape not suitable for screening materials, which can make it difficult for materials to pass through. The weaving method of the screen mesh may also affect the screening effect. If the weaving is too tight or the material is not wear-resistant, it is easy to cause hole blockage.

3. Equipment factors

Improper setting of parameters such as amplitude and frequency of the vibrating screen may result in poor movement of materials on the screen, affecting the screening effect. Lack of effective net cleaning devices, such as rubber elastic balls, makes it difficult to clean blocked materials in a timely manner.

2、 Solution method

1. Drying and dehydration: For fine sand with high moisture content, drying or dehydration treatment is carried out to reduce its viscosity and minimize agglomeration.

2. Pre screening treatment: Removing impurities such as mud and fibers from fine sand through washing, screening, and other methods to improve the purity of the material.

3. Choose the appropriate sieve: Based on the characteristics of the material and screening requirements, select the appropriate sieve aperture, material, and weaving method.

4. Optimize hole shape design: Adopting a hole shape design with a small top and a large bottom helps materials pass through the sieve smoothly.

5. Enhance the self-cleaning ability of the screen mesh: Install rubber elastic balls and other cleaning devices at the bottom of the screen mesh, and use the principle of bouncing balls to clean blocked materials.

3、 Reasonably choose equipment

For the screening of fine sand, traditional linear screens can no longer meet the requirements of yield and accuracy. The square swing screen designed and produced by Pioneer Vibration has achieved the requirements of yield and accuracy. The square swinging screen generates swinging force through a vibrating motor and a swinging device, which is transmitted to the screen box and mesh, causing the material to swing on the screen surface. At the same time as swinging, gravity causes the material to move downward and sieve through the pores of the sieve, achieving the goal of separating particles of different sizes. Materials smaller than the sieve aperture fall through the sieve to the lower layer, becoming undersized material; Materials larger than the sieve aperture are discharged from the discharge port after continuous rolling and jumping motion, completing the screening process.