The dust filter bag has a wide application space and has been widely used in electric furnace steelmaking, blast furnace coal injection, sintering, fire resistance, carbon black, cement and other industries, and has achieved good results. The electric furnace filter has good advantages and is very strong in terms of cleaning ability and filtration load compared with other products of the same type.

Since the injection of pulverized coal can replace part of coke, achieving coal-based coke can significantly reduce coke consumption, thereby reducing production costs, and is also one of the hands to adjust the furnace condition and ensure smooth, stable production and high production of the blast furnace. In the process of developing a large number of coal injection technology. The use of the pulverized coal preparation system (large pulverizer) results in the generation of a concentration of 600-1 0009/Nm' pulverized coal and a part of ultrafine pulverized coal. Because the penetration and penetration of pulverized coal are higher than ordinary powder, it can not be collected with ordinary filter materials, which will cause leakage. Penetration and so on. 1. The pulverized coal particles penetrated the environment greatly. The diaphragm is used to prevent the leakage of the filter material, and the hub can achieve the desired result. Wei Zhoujiang membrane filter. Increase the resistance of the winding. Affected production. For coal injection in the blast furnace. Coal dust and other system dust source t high dust concentration, fine dust particles, high dust resistance, high explosive. Dust is easy to produce leakage powder and dust leakage.

1. Advantages of Stable antistatic filter cloth

The strength is higher: the high-strength and low-stretch industrial yarn is used as the base fabric, the needle density is high, and the fiber is tightly cohesive, so that the strength is greatly improved. The pore size is smaller: the fine fiber is generally selected, the fiber diameter is reduced several times, the diameter of the L is reduced, the porosity is increased, and the filtration precision is improved. Lower elongation: the felt fibers are tightly packed and have a high density, which greatly reduces their elongation. High-strength low-stretch fibers are used as the base fabric to make the elongation less. High acid and alkali resistance: high-molecular-weight polyester grade fiber, acid-base and hydrolysis resistance are improved due to the direct spinning process. More wear-resistant, folding resistance: due to the high strength of the filter felt, the number of fibers per unit volume is high, the density is high, the wear is strong, and the service life is longer. High uniformity: several times of opening and loosening and fine combing make the fiber web more uniform, so that the whole of the filter felt is uniform and the surface is flat. Smooth surface: due to the uniform surface, the fibers are fine and dense, and the surface can be calendered to a smooth mirror. High filtration precision: Because the filter felt has a fine micro-L", particles with a diameter smaller than the pore diameter are blocked on the surface of the filter material, and it is difficult to enter the inside of the filter material, and the pore size is small and the precision is high. Low resistance: the stepped layered composite structure is more conducive to solving the contradiction between filtration accuracy, resistance and energy consumption, and the resistance loss during operation is small, saving energy. The surface filtering effect is good: smooth filter material surface, finer "S" type micropores, which can make finer particles unable to penetrate and leak or block the filter felt, so that it accumulates on the surface of the filter felt and becomes soft and new. Filter the loop.




2.Study on the performance of anti-static confinement

It adopts the processing method of gradient density change. It is made of ultra-fine fiber and anti-static fiber in the filtration of the surface, and the well is improved on the post-treatment. It has achieved good results in practical use. . The Siweifu ultra-fine surface acupuncture filter material developed by us has achieved large-scale production.

We can see that the superfine surface needle felt has a very good effect of cleaning dust compared with the ordinary needle felt. In actual use, the system resistance rise is also much slower than that of the ordinary needle felt. This is because the microfiber has Larger specific surface area and smaller fiber gap, which can achieve better filtration effect and filtration efficiency than ordinary filter materials, and is more suitable for the requirements of powder collection in coal injection system.

In summary, the comprehensive performance of the ultra-fine surface acupuncture filter material is closer to the performance of the surface filter media.