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How to maintain the filter cloth of the plate cardboard filter?
- 2020-03-29-

The quality of the filter cloth filter effect of the plate cardboard filter, the length of use, and the usual use and maintenance of the plate cardboard filter are also closely related. Generally speaking, the higher washing water temperature of the plate cardboard filter is conducive to the filter cloth. We know that the filter cloth of the filter press is mostly made of non-metallic materials, and the excessive washing water temperature will accelerate the aging of the filter cloth. For potassium-containing, sodium ion higher ore, the filter cake will contain a lot of Na2SiF6 or K2SiF6, and the high temperature of the washing liquid will promote the hydrolysis of fluorosilicate to form silica gel and colloidal CaF2, which will cause blockage, so the washing water temperature is not easy to be too high. Usually, the washing water The temperature should be controlled at 60-70 degrees Celsius.

The filter cloth of the filter press is fixed on the filter plate by rubber strips. After running for a period of time, some of the strips will turn out of the slot, causing the filter cloth to protrude, increase the friction with the filter plate, and increase the damage rate of the plate cardboard filter. Therefore, once this situation is found, it should be stopped immediately. If the filter cloth is damaged, it should also be repaired in time. Note: Be sure to check whether there are large foreign objects on the filter press; before shutting down the filter press, wash the joint surface of the filter plate with water 15 m in or above. If you want to carry out maintenance work on the filter press, especially when performing electric welding or cutting operations, be sure to cover the filter plate and filter cloth with wood or cardboard to prevent the filter cloth of the plate cardboard filter from being damaged. reduce the damage rate, prolong the service life of the filter cloth, and reduce the production cost