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zhouen921@163.comBasalt dust filter bag is an industrial dust filter bag that uses basalt fiber as the main filter material. Basalt is a volcanic rock that is made into basalt fiber through high-temperature melting and drawing. Due to its unique physical and chemical properties, basalt fiber is used to make high-performance dust filter bags.
●Technical parameters
| Product name | Basalt composite felt |
| Thickness | 2.2-2.5mm |
| Weight | 900-950g/m² |
| Material |
Basalt fiber mixed with 80-count alkali-free glass fiber chopped strands and 80-count alkali-free glass fiber base cloth; |
| Tensile strength in warp | >2000(N/5*20cm) |
| Tensile strength in weft | >2000(N/5*20cm) |
| Elongation in warp | <10% |
| Elongation in weft | <10% |
| Recommended filtration speed | 0.8--1.0(m/min) |
| Heat resistance | 220-280℃, instant 320℃ |
| Air permeability | 8-13(m³/m² ·min) |
| Post-processing | Impregnation and shaping treatment |
●Main features of basalt dust filter bags:
Strong high temperature resistance
Basalt fiber can withstand high temperatures, usually applicable temperatures can reach 500℃ to 700℃, suitable for the filtration needs of high-temperature industrial flue gas.
Good corrosion resistance
Basalt has strong acid and alkali corrosion resistance, suitable for handling acidic or alkaline corrosive gases, and prolongs the service life of the filter bag.
High strength and wear resistance
Basalt fiber has high mechanical strength, is not easy to break, has good wear resistance, and the filter bag structure is strong and adaptable to harsh industrial environments.
Environmentally friendly natural materials
Basalt is a natural ore, the production process is green and environmentally friendly, without harmful substances, and meets environmental protection requirements.
High filtration efficiency
Basalt dust filter bags can effectively capture fine dust, ensure emission standards, and protect the environment.
●Main application areas:
High temperature flue gas dust removal in the steel industry
Boiler flue gas purification in power plants
High temperature dust filtration in the cement industry
High temperature and high corrosion environments such as chemical and metallurgical industries
●Summary:
Basalt dust filter bags are an ideal choice for dust removal systems under high temperature and high corrosion conditions due to their high temperature resistance, corrosion resistance, wear resistance and environmental protection.
●Company Introduction:
Jiangsu Dongfang Filter Bag Co., Ltd. is an enterprise integrating R&D, production, sales, technical support and service, covering an area of 90,000 square meters. It has 13 production lines imported from Germany, including Autefa, Truetzschler, Karl Mayer, Etten hanging systems, high-speed needling machines, etc. It currently has 220 employees and an annual production capacity of 12 million m².
●Factory appearance:

●Industry Applications:
●FAQ:
Q. What are the applicable industries for high-temperature dust removal filter bags?
A.1. Dust removal at the end/head of cement kiln
2. Metallurgical steel sintering machine, blast furnace gas purification
3. Waste incineration power plant
4. Dust removal of thermal power boilers
5. Chemical, coking, carbon black production
6. Asphalt mixing station
Q. What are the precautions for filter bag installation?
A.1. Ensure that the bag mouth and the flower plate are tight and leak-free
2. The frame is smooth and burr-free to avoid scratching the filter bag
3. The filter bag is hung vertically and cannot be twisted or folded
4. Perform a pulse test after installation to check the sealing
5. Avoid dust and moisture in the installation environment
Q. How to determine whether the high-temperature filter bag needs to be replaced?
A.1. The pressure difference continues to increase or suddenly decreases
2. The chimney emission concentration exceeds the standard
3. System alarm (such as the differential pressure is too high)
4. The filter bag is found to be hardened, cracked, shrunk, and deformed during maintenance
5. The filter bag becomes brittle, powdered, and the appearance is seriously damaged