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Nov 20, 2024
Here are the factors to consider:
Application.
Particle size to be selected.
Filter cloth working temperature.
Filter cloth working pH value.
Type of filter machine.
Particle size is the diameter of fine particles in the filtrate, determined by the choice of filter cloth.
pH is a measure of acidity, on a scale that ranges from 0 to 14, from strong acid (lower value) through neutral (7) to alkaline (higher value). The pH affects the choice of filter cloth material. For example, PP works across the range but PES is recommended only from pH=3 to pH = 9.
Fabrics are flat and soft pieces made up of slender and flexible objects that are crossed, knotted and connected.
Mainly classification:
Weaving: made up of yarns with cross-relationship.
Knitting: made up of yarns with knot-relationship.
Non-woven: made up of yarns and fibers with connection-relationship.
Yarns consist of staple fibers (e.g. cotton, polyester staple) or filaments(e.g. multifilaments, monofilaments). Spun yarns consist of staple fibers, which are held together by twisting the fibers during spinning.
Monofilament consists of a single filament yarn, a fiber obtained by continuous spinning.
Multifilament yarns consist of slender filaments and a bundle of slender monofilaments. (Bolian multifilaments 0 twist)
Twisted yarns are two or more yarns twisted together into one twisted yarn.
Industrial filter cloth is a filter media woven from natural fibers and synthetic fibers, belonging to industrial textiles. Main materials are Polypropylene, Polyester, Nylon, Vinylon, Aramid, Full-Cotton, etc. Among them, polypropylene and polyester are more commonly used. Plain, twill, satin, and non-woven needles are main weaving methods.
Industrial filter cloth is mainly applied to liquid-solid separation and gas-solid separation. Liquid-solid separation is widely used in mining, chemicals, metallurgy, non-metallic minerals, food, medical and other fields. Gas-solid separation is mainly used in ironworks, steelworks, ferroalloy factories, refractory factories, foundry and other flue gas dust removal systems and flue gas filtration.
Breaking strength: the maximum force in the process of pulling off the specimen.
Breaking elongation: the breaking elongation is calculated according to the elongation at the maximum force during the stretching process and initial length.
Breaking time: the time corresponding to the breaking elongation. (The stretching speed is constant.)
