Aramid Filter Bags
Aramid filter bags are widely used for medium-to-high temperature dust collection applications. They provide excellent heat resistance, strong abrasion resistance, stable dimensional performance, and cost-effective filtration performance for demanding industrial environments.
Main Advantages
Excellent Heat Resistance
Aramid filter bags are suitable for continuous operation under medium-to-high temperature conditions and perform well in hot gas filtration systems.
Good Abrasion Resistance
Aramid fiber has strong mechanical strength and good wear resistance, making it suitable for applications with high dust concentration and strong airflow.
Stable Dimensional Performance
The filter media maintains good dimensional stability during long-term operation, helping improve installation fit and sealing performance.
Cost-Effective High Temperature Solution
Compared with PTFE filter bags, Aramid filter bags provide lower material cost while maintaining stable performance in many industrial applications.
Good Filtration Performance
Suitable surface treatments and membrane lamination can further improve filtration efficiency and reduce dust emissions.
Technical Specifications
The following are commonly used industrial specifications for Aramid needle felt filter bags. Actual values may vary slightly depending on manufacturing structure and finishing treatment.
| Item | Technical Data |
|---|---|
| Material | Aramid Fiber Needle Felt |
| Weight | 450–550 g/m² |
| Thickness | 2.0–2.4 mm |
| Continuous Operating Temperature | 200°C |
| Instant Maximum Temperature | 220°C |
| Air Permeability | 8–15 m³/m²/min |
| Abrasion Resistance | Excellent |
| Acid Resistance | Moderate |
| Alkali Resistance | Moderate |
| Hydrolysis Resistance | Limited |
| Surface Treatment | Heat Setting / Calendaring / Membrane Lamination / Water & Oil Repellent Treatment |
Typical Applications
Cement Industry
- Cement Kiln Exhaust Systems
- Clinker Cooler Dust Collection
- Coal Mill Dust Collection
- Cement Grinding Systems
Asphalt Industry
- Asphalt Mixing Tower Dust Collection
- Aggregate Drying Drum Exhaust
Steel & Metallurgical Industry
- Electric Arc Furnace Fume Collection
- Sinter Plant Dust Collection
- Furnace Exhaust Filtration Systems
Power Generation Industry
- Coal-Fired Boiler Dust Collection Systems
- Biomass Boiler Exhaust Systems
Lime & Gypsum Industry
- Lime Kiln Dust Collection Systems
- Gypsum Drying Exhaust Systems
Mining & Mineral Processing Industry
- Ore Crushing Dust Collection Systems
- Grinding & Conveying Systems
Why Aramid Filter Bags Are Commonly Used
These industrial processes normally involve:
- Continuous operating temperatures around 180°C–200°C
- High dust concentration
- Strong airflow impact
- Abrasive particulate matter
- Relatively dry flue gas conditions
Aramid fiber performs well because it provides:
- Good high-temperature resistance
- Strong mechanical strength
- Stable dimensional performance
- Good abrasion resistance
- Lower operating cost compared with PTFE filter media
For applications involving:
- High sulfur flue gas
- Strong acid gas corrosion
- High moisture content
- Severe hydrolysis conditions
