Working Temperature: 150℃~260℃
Main Material: Nomex(Aramid), P84, FMS needle felt, Fiberglass woven fabric, etc.
Finish Treatment: Calendering, Heat setting, Singeing, PTFE impregnation, PTFE membrane
Diameter&Length: Customized
Capacity: 2000 pcs per day
Customization Accepted.
Description
The air pollutants emitted by the kiln cause great harm to the environment, so the technology of using dust filter bags to remove particulate matter from dusty gas to reduce its emission to the atmosphere is becoming more and more important.
Main working conditions and dust collection requirement of raw mill:
| Dust Collection Type | Outer-filtering |
| Treatment Air Capacity | 2500T/D≈480000m3/h, 5000T/D≈960000m3/h |
| Filtration Velocity | ≤1.0m/min |
| Entrance Dust Density | ≤200g/Nm3 |
| Emission Concentration Requirement | ≤30g/Nm3 |
| Inlet & Outlet Pressure Differential | ≤1500Pa |
| Working Temperature | 150℃, ≤260℃ |
| Regular Filter Bag Size | Dia. 160X6000-8000mm |
| Regular Service Life Requirement | 2-3 years |
Processing of dust filter bags
- Burning pressure treatment
The one-sided and double-sided needle-punched felt filter materials after burning and pressing treatment have incomparable advantages over ordinary filter bags, which greatly improves the dust-cleaning performance of the filter material.
- Antistatic treatment
Some dusts will burn when encountering sparks in a certain concentration state. Therefore, for flammable and explosive dusts, it is advisable to use antistatic treated needle felt filter materials.
- PTFE coating treatment
When the particle size of the dust is less than 1 micron, or the dust is very viscous, or the humidity of the gas is high, the ordinary filter material cannot be effectively filtered. The film-coated filter material made of polytetrafluoroethylene (Teflon) , with extremely high filtration accuracy, smooth surface, no dust adhesion, dust will not penetrate into the filter material, and achieve surface filtration.
- Water and oil repellent treatment
We use fluorocarbon resin and PTFE impregnated oil-proof and waterproof treatment for the needle felt filter material. The filter bag is easier to capture dust for dust-laden wet gas (especially for water-absorbing and deliquescent dust), avoiding and reducing the problem of bag sticking.
Commonly used filter bag fabric chosen of raw mill:
- Fiberglass Woven Fabric With PTFE Membrane.
- Nomex (Aramid) Needle Felt.
- P84 Needle Felt.
- FMS Needle Felt.
