The choice of filter cloth on the filter effect is very important, in the filter press process, the filter cloth plays a key role. Its performance is good or bad, the selection of the right or not directly affect the filtering effect. Currently used in the most common filter cloth is made of synthetic fiber textile filter, according to their different materials can be divided into polyester, vinylon, polypropylene, nylon and other several. In order to achieve the retention effect and filtration speed are ideal, the choice of filter cloth, but also according to the size of the slurry particle size, density, chemical composition and filtration process conditions to choose. As the filter cloth in the braided material, methods are different, its strength, elongation, permeability, thickness, etc. are different, thus affecting the filtering effect.
The choice of filter cloth should first meet the anti-corrosion requirements, according to the chemical nature of the material separation, select the appropriate filter cloth material. Filter mesh filter mesh (model) according to the separation of particle size and particle size distribution to determine the material, the general choice of filter mesh (model) should be slightly larger than the diameter of particles to be retained in the initial stage of filtration with a small amount of Small particles through the filter, when the larger particles retained by the formation of filter cake bypass layer, you can eliminate the phenomenon of percolation, help to improve the filtration efficiency. Recommended single-filament filter cloth double composite filter cloth, the filter surface by calendering, to reduce the possibility of clogging the filter cloth and improve the regeneration performance of the filter cloth. When installing the filter cloth, the sealing lip should be fitted into the drum sealing groove with the supplied filter cloth sealing ring (in the case of a filter with lower discharge or scraper discharge centrifuge) and no seal failure, material.
Industrial filter cloth is made of natural fiber and synthetic fiber woven filter medium, mainly for solid-liquid separation and industrial dust. For solid-liquid separation, gas-solid separation; Gas-solid separation applications Ironworks, steel mills, ferroalloy plants, refractory plants, foundries, power plants and other flue gas treatment dust removal system. Waste incinerators, coal-fired boilers, fluidized bed boiler flue gas filtration. Asphalt mixing, building materials, cement ceramics, lime, gypsum and other production sites. Aluminum electrolysis, lead, tin, zinc, copper and other rare metals smelting flue gas filtration, recovery of fine materials, liquid, solid separation. Chemical, coke, carbon black, dyes, pharmaceuticals, plastics and other areas of liquid-solid separation and recovery of fine materials. Dust management and purification collection in mining, food processing, flour, electronics, wood processing, etc.
(Addtime：2018-1-28)
