A Basalt Filter Bag is a high-performance industrial filter bag made from fibers of volcanic rock (basalt). These bags are engineered for extreme operating conditions, offering exceptional resistance to high temperatures, chemical corrosion, and abrasion. They represent a superior alternative to traditional synthetic bags in demanding applications like cement kilns, metal smelting, and waste incineration.
A Basalt Filter Bag is a high-performance filtration medium made from continuous basalt fiber that derived from natural volcanic rock. It is engineered for dust collection and flue gas filtration in environments with extreme heat, chemical exposure and mechanical stress the conditions that typically degrade conventional filter bags..
The superior quality of our Basalt Filter Bags is a direct result of our specialized manufacturing techniques:
· High-Purity Raw Material Selection: We source only the highest grade of basalt rock to ensure consistent fiber quality.
· Advanced Fiber Spinning: The basalt rock is melted in furnaces at over 1,400°C and spun into continuous filaments, which provide greater tensile strength and dust release properties compared to staple fibers.
· Precision Needle Punching: Our state-of-the-art needle looms create a uniform and stable felt structure with optimal porosity for high filtration efficiency and low-pressure drop.
· Specialized Finishing Treatments:
o Heat Setting: The fabric is heat-set under tension to ensure dimensional stability during operation, preventing bag shrinkage or elongation.
o PTFE Coating (Optional): We offer a protective PTFE membrane coating for ultra-high filtration efficiency (>99.99%) and enhanced dust release for sticky, fine dust.
Types of Basalt Filter Bags Analysis
TYPE NUMBER | COMPOSITION | TEMPERATURE RATING (°C) | SPECIAL TREATMENT | PRIMARY APPLICATION |
BFB-100% | 100% Basalt | Continuous 260 / Peak 280 | Standard | Cement kilns, general industrial |
BFB-85/15 | 85% Basalt / 15% P84 | Continuous 280 / Peak 300 | Water repellent | Waste incineration |
BFB-70/30 | 70% Basalt / 30% PTFE | Continuous 280 / Peak 300 | PTFE membrane | Chemical processing |
BFB-90/10 | 90% Basalt / 10% Glass | Continuous 270 / Peak 290 | Anti-static | Power generation |
BFB-100% (AR) | 100% Basalt | Continuous 290 / Peak 320 | High abrasion resistant | Metallurgical processes |
BFB-75/25 | 75% Basalt / 25% P84 | Continuous 290 / Peak 320 | Acid resistant | Metal smelting |
BFB-60/40 | 60% Basalt / 40% PTFE | Continuous 290 / Peak 320 | Hydrophobic | Pharmaceutical processing |
BFB-80/20 | 80% Basalt / 20% Aramid | Continuous 270 / Peak 290 | Oil repellent | Wood processing |
BFB-100% (HT) | 100% Basalt | Continuous 300 / Peak 350 | High temperature stabilized | Glass manufacturing |
BFB-65/35 | 65% Basalt / 35% PTFE | Continuous 300 / Peak 350 | Complete chemical resistant | Petrochemical refining |
Basalt filter bag is a kind of high temperature filter material product, which is made of basalt fibre as the main raw material and filter material through special process. Basalt filter bag has the following features and advantages:
High temperature resistance: basalt filter bag can be used for a long time in a high temperature environment, according to different manufacturing processes and formulations, its temperature resistance level can reach 350 ℃, to fill the international high temperature synthetic fibre needle punched filter media blank.
High mechanical strength: basalt fibre itself is high strength, made of filter bags are generally more than 3000N fracture strength, able to withstand large mechanical loads.
Dimensional stability: Due to the low elongation of basalt fibre, the filter bag size is stable and not easy to deform due to temperature change or mechanical vibration.
Corrosion resistance: basalt filter bag has good corrosion resistance, can be used in acid, alkali atmosphere of the gas, suitable for a variety of industrial environments.
High filtration efficiency: the filter bag has smooth surface, good air permeability, low no-load pressure loss, high dust collection efficiency, and good filtration effect on dust particles below 0.5mm in diameter.
Strong adaptability: Basalt filter bag has strong adaptability to the concentration of dust content in flue gas, handling large amount of dust, convenient operation and maintenance, and easy to clear dust.
Long service life: due to the performance advantages of the material itself and the special manufacturing process, the basalt filter bag has a long service life.
Material in addition to basalt fibre, may also be compounded with glass fibre, P84, PTFE, etc., in order to adapt to different working conditions, can meet the needs of industrial dust removal and flue gas purification.
Overall, basalt filter bag as a new type of high temperature filter material, in the iron and steel, electric power, chemical industry and other industries of high temperature flue gas dedusting and purification has a wide range of application prospects.
product name | Basalt filter bag | |
Fiber Type | Basalt fiber | |
Weight (g/ ㎡ ) | 900± 20 | |
Thickness(mm) | 2-2.5 | |
Tensile strength (N/5×20cm) | Meridian direction | >3900 |
WeftLatitudinal direction | >3300 | |
Air permeability (L/m2/s·200pa) | 100-200 | |
Recommended operating temperature | ＜300 | |
Instantaneous operating temperature | 350 | |
Surface treatment process | Hot pressed PTFE film, water and oil repellent surface | |
Basalt Filter Bags provide significant benefits over other high-temperature filter media like fiberglass or P84®.
· Exceptional Temperature Resistance: Withstands continuous high temperatures, protecting your system from thermal damage.
· Superior Chemical Resistance: Excellent resistance to most acids and alkalis, ensuring longevity in corrosive environments.
· High Mechanical Strength: Excellent resistance to abrasion, vibration, and pulsing, leading to a longer bag life.
· Great Filtration Efficiency: The fine, continuous fibers create a dense felt that captures sub-micron dust particles effectively.
· Hydrophobic & Non-Hygroscopic: Does not absorb moisture, preventing clogging and maintaining a low pressure drop in humid conditions.
· Environmentally Friendly: Made from natural basalt rock, a sustainable and abundant resource.
PARAMETER | STANDARD VALUE | TEST METHOD | APPLICATION RANGE | NOTES |
Fiber Type | Basalt | Visual inspection | All types | May include composite materials |
Weight | 900±20 g/m² | ISO 9073-1 | 800-1000 g/m² | Higher weights for abrasive applications |
Thickness | 2.0-2.5 mm | ISO 9073-2 | 1.8-3.0 mm | Measured at 200 Pa pressure |
Meridional Tensile | >3900 N/5×20cm | ISO 9073-3 | 3500-4500 N | Room temperature |
Latitudinal Tensile | >3300 N/5×20cm | ISO 9073-3 | 3000-4000 N | Room temperature |
Air Permeability | 100-200 L/m²/s | ISO 9237 | 80-250 L/m²/s | At 200 Pa pressure |
Continuous Temp | ≤300°C | ASTM D6413 | 260-300°C | Varies by composite |
Peak Temp | 350°C | ASTM D6413 | 320-350°C | Short-term exposure |
Filtration Efficiency | >99.9% | EN 1822 | @ 0.5μm particles | Depends on surface treatment |
Minimum Bend Radius | 50mm | Internal test | Application specific | Critical for installation |
Technical Support and Implementation Services
At Senotay, we understand that superior filtration products require expert implementation to achieve optimal results. Our comprehensive technical support services include:
Baghouse Assessment: On-site evaluation of your current filtration system to identify improvement opportunities
Performance Analysis: Detailed review of your operational parameters to recommend the ideal filter media solution
Operational Training: Comprehensive training for your maintenance staff on proper handling, installation, and care of Basalt Filter Bags
Performance Monitoring: Ongoing support with regular check-ins to verify optimal operation and address any concerns
Troubleshooting Assistance: Rapid response technical support for any operational challenges that may arise
Our commitment extends beyond the sale where we partner with you to ensure your filtration system delivers peak performance throughout its operational life.
We accept sample orders for fit and filtration trials. Customization includes cuff style (steel ring, snap band, Teflon collar), length, diameter, finish and micron rating. Contact our sales team with application details for a quotation and lead-time estimate.
Q: What is the usual lifetime of a Basalt Filter Bag?
A: Lifetime depends on process conditions — with correct selection and maintenance, typical service life ranges from several months to multiple years.
Q: Do you supply replacement bags for older collectors?
A: Yes — we offer retrofit sizing and custom collars to match legacy equipment.
