How to solve the problem of fine sand blockage in the vibrating screen

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

1、 Factors that cause blockage in fine sand vibrating screens

1. Raw material factors

Fine sand particles are small and prone to agglomeration due to moisture, viscosity, or electrostatic effects, resulting in clogging of sieve pores. If there are more impurities such as mud and fiber, it will also increase the risk of pore blockage.

2. Screen factor

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

3. Equipment factors

Improper setting of parameters such as amplitude and frequency of the vibrating screen may lead to 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

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

2. Pre screening treatment: Remove 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, choose the appropriate sieve aperture, material, and weaving method.

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

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

3、 Reasonable selection of 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 screen, causing the material to swing on the screen surface. While swinging, gravity causes the material to move downwards and sieve through the pores of the screen, achieving the goal of separating particles of different particle sizes. Materials smaller than the sieve surface aperture fall into the lower layer through the sieve hole, becoming undersized material; Materials larger than the sieve aperture are discharged from the discharge port after continuous rolling and jumping movements, completing the screening work.

    In summary, the blockage of fine sand during the screening process requires systematic resolution and analysis. Pioneer Vibration has been engaged in the vibration screening industry for 16 years and can solve various types of screening problems. If you encounter difficulties during use, please feel free to contact us at any time. Pioneer Vibration will be dedicated to serving you!