How to distinguish the material of filter cloth?

Filter cloth, a filter medium woven from natural or synthetic fibers.

Commonly used materials are cotton, hemp, wool, cocoon silk, asbestos fiber, glass fiber and some synthetic fibers. Such as cotton woven canvas, twill and woolen fabric, etc. In a broad sense, the filter cloth also includes metal mesh or filter.

The main synthetic fibers are polypropylene, polyester, polyamide, Vinylon, etc., of which polyester and polypropylene are the most commonly used, with solid-liquid separation as the main, while polyamide is widely used in coal washing plants because of its excellent wear resistance.

Polyester, polypropylene, nylon, Vinylon, cotton and other materials of filter cloth, screen, are widely used in pharmaceutical, chemical, dye, iron and steel, construction, iron metallurgy, chemical industry, ceramics, cement, geology, minerals and other industries.

Special filter cloth are: aramid, PTFE, PVDF and so on, the use of high temperature.

Bag filter cloth is woven by fiber, just like cloth, so the bag filter cloth is very soft, ductility, it is because of this, the filter cloth in the use of the bag filter process will easily cause damage, especially in the filter material there is a hard object. When the filter cloth is punctured, it will run through the filter cloth, so that the filter will not have a great effect.

The mesh number of bag filter cloth is too small

Mesh is an important parameter of the filter cloth, and the size of the parameter indicates the number of filter holes of the filter cloth. The smaller the mesh number, the larger the filter hole of the bag filter, and the smaller the filter hole of the bag filter cloth. Therefore, in the process of material filtration, the filter cloth with small mesh will make a lot of solids pass through the filter cloth in a normal way, which ultimately leads to the liquid is not clear after filtration.

The flue gas treatment and dust removal system of ironmaking plant, steel plant, ferroalloy plant, refractory plant, foundry, power plant, etc. Waste incinerators, coal-fired boilers, fluidized bed boilers and other flue gas filtration. Asphalt concrete 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, fine material recovery, liquid and solid separation. Liquid-solid separation and recovery of fine materials in chemical, coke, carbon black, dyes, pharmaceuticals, plastics and other fields. Dust treatment and purification collection for mining, grain processing, flour, electronics industry, wood processing, etc.

How to distinguish the filter cloth is made of what material?

1. Look. As far as the color of the filter cloth is concerned, the large chemical fiber filter cloth is white and glossy. Small chemical fiber filter cloth is dark, gray, and some filters are yellow. For the gloss of the filter cloth, the surface of the long fiber filter cloth is smooth and bright, and the surface of the short fiber filter cloth is hairy. For the filter cloth patterns, such as twill, plain, these patterns can also help you judge the model.

2. Touch. (Softness) Of which the staple fiber such as 208,729 is as soft as the plush cloth. 734, 747, 758, 3927 are all woven from the same raw material, but the thickness and density are different. 3927 is very rough, firm and not soft. Softness, and roughness need you to hold the sample bit by bit touch, the corresponding filter cloth specifications have their own density coefficient, as long as the comparison can be roughly identified.

3. Weigh. It is mainly to determine the thickness of the filter cloth, and it is best to take a small piece to weigh it (grams per square meter).

4. Burn. Among them, polyester burns up black smoke, and polypropylene burns up blue light.

The order is to first determine whether it is woven cloth, and then determine the material (polyester, polypropylene or whatever), and then make a general judgment on the long and short fiber, the grain. Then according to the filter cloth thickness, density, gram weight technical index comprehensive measurement of filter cloth type.