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The filter press and pump are widely used in industries such as sewage treatment plants, sludge filtration, coal washing, mineral processing, power plants, aluminum plants, chemical plants, and non-ferrous metal smelting.

The process of pressing by the filter press is actually a dehydration process. The material in the filter chamber is separated by high-pressure squeezing to form a filter cake. Water seeps out from the filter cloth, and the filter residue remains in the filter chamber. When the filter cake is pressed dry to a certain extent, the pressing is completed before unloading the cake. During the pressing process, the pressing pump mainly plays a role in maintaining pressure.