With the rapid development of coal preparation technology, coal preparation plants are becoming larger and larger, the separation efficiency is constantly improving, the amount of fine-grained coal is increasing, coal quality is deteriorating, and coal slime is increasing. Problems such as this have also arisen. Higher requirements have been put forward for the
Filter Press, the key equipment of the coal slurry water treatment system.
Basic requirements and characteristics of coal filter press
(1) Large-scale equipment, using large filter plates and short configurations can not only reduce the floor space, but also reduce the number of pressure differential transmissions due to the shorter filter plate components, and the pressure differential is easily broken by the sun. While increasing the processing capacity, it can also reduce Due to the dangerous pressure difference caused by uneven cake formation, the quick-opening filter press adds a metal driving plate in the middle of the filter plate assembly, which can block the transmission of pressure difference and extend the life of the filter plate and the entire filter press.
(2) Rapid operation requires that the filter press feeds quickly, drains liquid quickly, unloads cake quickly, and replaces filter cloth quickly. This is conducive to large filter presses using multi-port feeding, simultaneous clear and dark flow liquid drainage, and filter surface design. Optimizing and shortening the filtration cycle of the diaphragm extrusion technology and the realization of the plate-cloth separation structure with the feed shoe. For extra-large filter presses, the high-level slot feeding method is more suitable. In the early stage of filtration, the high-level trough feeding method is more suitable. The self-flow method feeds materials into the filter press without obstacles to achieve rapid filtration without the need for a feed pump, which can greatly save energy consumption. In the later stage of filtration, a small flow high-pressure pump is used to reduce costs.
(3) System reliability. When using a filter press, in addition to requiring the reliability of the hydraulic system, pull plate system, cloth washing system and liquid collection flap system, the damage to the filter cloth must be known in a timely manner and the damage to the filter cloth must be known in a timely manner. The exact position is also very important for the stable operation of the entire process.
