Metal Fiber Bag Filter

Metal Fiber Bag Filter

High-Temperature Sintered Metal Filter Bags for Hot Gas Filtration

CMI metal fiber bag filters are high-performance filtration elements manufactured from sintered metal fiber felt and supported by an internal cage structure.

Designed for high-temperature gas filtration, these filters provide excellent mechanical strength, low pressure drop, and stable long-term performance in demanding environments such as flue gas treatment, dust collection, and catalyst recovery systems.

They are widely used as a durable alternative to conventional fabric filter bags, especially in applications requiring high temperature resistance, chemical stability, and reliable pulse-jet cleaning performance.

Key Features & Benefits

• High temperature resistance up to 450–600°C (depending on material)
• High mechanical strength and abrasion resistance
• Fine dust removal efficiency (emission ≤ 10 mg/Nm³)
• Low pressure drop with high air permeability
• Compatible with pulse-jet cleaning and offline washing
• Long service life and stable filtration performance
• Electrically conductive, eliminating static electricity risks
• No media shedding or secondary contamination
• Compact system design with reduced footprint
• Excellent resistance to chemical corrosion

Technical Specifications

Configurations

• Cylindrical metal filter bags
• Pleated metal filter bags
• Plate-frame structures (custom designs)

Dimensions

• Diameter: 14 – 200 mm
• Length: 500 – 8000 mm
• Custom sizes available

Materials

• Stainless Steel: 316L, 310S
• Inconel
• Hastelloy
• Sintered metal fiber felt with welded construction

Connections

• Flange connection
• Threaded connection
• Bag cage (internal support structure)

Operating Characteristics

• Temperature: 400 – 600°C (depending on material)
• Emission level: ≤ 10 mg/Nm³
• Cleaning: pulse-jet, reverse air, or offline washing

Typical Applications

• Metallurgical industry hot gas filtration
• Coal-fired boiler flue gas dedusting
• Cement kiln exhaust gas purification
• Alumina and mineral processing gas filtration
• Catalyst recovery in petrochemical and refinery systems
• Precious metal recovery processes
• Waste incineration flue gas treatment
• Industrial exhaust gas purification systems