Selection And Usage Of Filter Cloth For Plate And Frame Filter Press

The filter cloth is an important part of the filter press accessory equipment, and the combination of filter cloth varies depending on the model. Here is a special sharing of the selection and use of filter cloth for plate and frame filter presses:

1. It is necessary to clarify the materials that need to be filtered, as different materials will determine the selection of different filter cloths.

2. In production, it is necessary to clarify the filtration accuracy and select a filter cloth with appropriate permeability based on the filtration accuracy. Although the filter cloth plays an important role in the initial filtration accuracy of the filter press, the higher the initial filtration accuracy, the better. It is necessary to consider whether the filtration accuracy can meet lower requirements. After the filter press forms a filter layer for a period of time, the interception effect of the filter cloth is very small. The "filter layer" truly plays a role in fine filtration, and the formation of a good filter layer is the key to the use technology of the filter press.

3. The peeling performance of the filter cake. When selecting filter cloth, special attention should be paid to the peeling performance of the filter cake. The surface of the filter cloth is smooth and flat, the filter cake peels off quickly, the filtration operation time is short, and the efficiency is high. The filter cake sticking to the filter cloth is not easy to peel off, which will prolong the operation time of the filter press and reduce work efficiency. If the filter cloth needs to be replaced, the time will be longer. Choosing single fiber filter cloth has better cake unloading performance than long filament and short fiber filter cloth, and choosing satin weave filter cloth has better cake unloading performance than plain weave filter cloth.

4. The regeneration performance of filter cloth. When choosing filter cloth, it is also important to pay attention to selecting filter cloth with good regeneration performance. A filter cloth with good regeneration performance can be directly washed on the filter press, reducing the number of cloth changes. After simple treatment, the filtration efficiency of the replaced filter cloth can be restored to over 80%.

5. The filtration experiment of materials. Continuous experiments are required when using the filter press, and it is very important to conduct filtration experiments on the raw materials after the initial selection of filter cloth. Conduct small-scale experiments on material filtration to examine the filtration rate, retention effect, cake moisture content, cake unloading performance, regeneration performance, etc. of the filter cloth.