What is the function of the fluff on FMS filter bag?

The fluff on the FMS felts helps to increase the surface area of the trapped particles and provide support between the holes. The FMS filter bag prevents the accumulated lye from passing to the pores and forms a loose surface. The FMS filter bag will clean the ashes. Its adhesive structure maintains the remaining support layer and improves initial efficiency.

In order to improve the efficiency of dust removal, in addition to the weaving method of FMS filter bag to remove dust, the diameter of the filter cloth fiber must be selected reasonably. The smaller the fiber diameter, the higher the dust removal efficiency of the FMS filter bag base, especially when the particles are less than 1μm, a microfiber material dust filter must be used. Dust removal maintains the economic operation resistance of 800-1500 pa. In addition to dust removal, FMS filter bag must be selected reasonably.

If the surface treatment cost is too high to be used, and there are no other conditions, the FMS filter bag can be used to reduce the filtering speed. Another method is that the working temperature of dust removal is high, and the dust tends to become cleaner when the temperature is high. Using cotton cloth (also known as cotton cloth) as a FMS filter bag, the temperature will cause a sharp drop in strength if the temperature exceeds 80℃. At this low temperature, the threat of condensation of filtered dust and flue gas (condensation when gas or liquid is cooled) will increase. The working temperature of FMS filter bag bag can reach 220℃, not only without the danger of burning dust filter and flue gas, but also can directly treat the smoke discharged from waste heat boiler.

Anyway, FMS filter bags now are great choice for most steel plants blast furnace.