Which kind of filter cloth is suitable for the filter cloth?
(3) peeling performance of filter cake. When choosing filter cloth, particular attention should be paid to the peeling performance of the filter cake. The filter cloth surface is smooth and smooth, the filter cake is peeled off quickly and thoroughly, the filtering operation time is short, and the efficiency is high. When the filter cake adhesion is difficult to peel off on the filter cloth, the operation time of the press filter is prolonged, and the work efficiency is reduced. If the filter cloth is changed, the time will be longer. Now widely used van filter press, filter cloth replacement is more troublesome. Selection of monofilament filter cloth cake discharge performance is better than long filament and short fiber cloth, satin weave fabric cloth selection than plain cake discharge performance. (4) the regeneration performance of filter cloth. When choosing filter cloth, we should also pay attention to choosing filter cloth with good regeneration property. The filter cloth with good regeneration performance can be washed directly on the filter press to reduce the cloth changing times. The filter cloth is simply treated (drying, washing, etc.), and the filtration efficiency is restored to more than 80%. (5) filtration experiment of materials. The use of press filter is a kind of experimental technique. It is very important to filter the raw material (without changing the material properties and technological conditions) after the preliminary selection of filter cloth. A small sample test was carried out to investigate the filtration rate, retention effect, moisture content of cake, cake performance and regeneration performance of the filter cloth
Therefore, the cloth manufacturer produces a single filament fabric, overcome the weakness of monofilament filter cloth. Monofilament filter cloth made of interception layer, support layer with multifilament filter cloth. The filter cloth produced by the treatment technique is very suitable for the use of the filter cloth by the press filter. Three, frame filter press filter cloth selection principle and method (1) according to the chemical and physical properties of materials, choose filter cloth material. Suppliers of filter cloth are provided with detailed technical data as far as possible. (2) according to the requirements of filtration accuracy, the permeability (maximum retention diameter) of filter cloth is selected. Technical parameters such as the maximum retention diameter and the size of the filter supplier can be used for primary election. Although the filter cloth plays an important role in the initial filtration accuracy of the press filter, the initial filtration accuracy is not higher, and the filter accuracy can be taken into consideration. Because the filter press forms the filter layer for a period of time after filtration, the rejection function of the filter cloth is very small. The filter layer with the function of fine filtration is the key to the application of the filter press.
