How to Evaluate the Filtration Performance of Industrial Filter Cloths – 4 Tips from Bolian!

How can you judge the performance of industrial filter cloths? Bolian explains several key indicators:

1.Pore Size Measurement

Measuring the pore size of industrial filter cloths provides indirect insight into the cloth's initial retention ability and filtrate passing ability during the early stages of filtration. The retention accuracy and filtrate passing ability depend on factors such as pore size, fabric material, structure, and weaving method.

2. Water Permeability Testing
Water permeability is a crucial feature reflecting the filtration speed of industrial filter cloths. In actual solid-liquid separation processes, water flow resistance more accurately indicates filtration speed compared to air permeability resistance. Water permeability refers to the amount of water passing through a unit filtration area within a unit of time under a certain pressure differential.

3. Maximum Permeable Particle Size Measurement
For applications involving low-concentration materials, high filtrate clarity, or specific maximum particle size requirements, the maximum permeable particle size becomes a critical evaluation index. Testing the maximum permeable particle size of different cloths not only helps compare their particle retention ability but also indirectly reflects the liquid passing rate.

4. Cake Release and Regeneration Performance
The cake release performance of filter cloths directly affects the equipment’s productivity and the discharge process. Good cake release properties enhance discharge efficiency and reduce downtime. Meanwhile, regeneration performance reflects the filter cloth’s resistance to clogging and its ability to recover, influencing service life and material adaptability. Optimizing these two properties significantly improves filtration efficiency and reduces maintenance costs.