The filter press is a machine that uses a pressure difference to separate solid particles from liquids through a porous medium (such as filter cloths, filter plates, etc.). It is mainly used for dewatering the concentrates of non-ferrous metals, non-metallic concentrates, flotation tailings (middle) coal, and sludge. It can also be used for the solid-liquid separation of suspensions that are difficult to settle. It is widely used in industries such as beneficiation, food, papermaking, chemicals, and sugar production.