Issues regarding pipeline wear in silicon powder transportation
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Silicon powder is transported using a pneumatic conveying system, but the bends in the pipelines suffer severe wear. I know there are several ways to reduce this wear; one method is to use tee-shaped bends, which increases resistance and thus reduces friction； The second is to use elbows with corundum linings ； Are there any other methods? Let’s discuss this together, experts.
Increasing the bending radius of the pipe means that, with a fixed inner diameter, the larger the bending radius, the less wear there will be. By applying the principle of self-generated wear resistance, a buffer layer made of loose solids is created between the gas particles and the inner wall of the pipe subjected to their impact; as a result, it is the loose solid buffer layer rather than the pipe’s inner wall that is impacted by the solid particles
The main cause of wear in the pneumatic conveying pipelines for silicon powder is too high conveying speed. If the conveying speed is reduced by half, the wear rate will drop to only one-eighth of its original value. Therefore, the quality of the conveying system is key to pipeline wear.
1. The radius of curvature at pipe elbows should be 6 to 10 times the engineering diameter. 2. Weldable, wear-resistant cast steel should be used. 3. The wall thickness at pipe bends should be increased
A layer of STL can also be plated on the inner surface of the elbow to improve wear resistance