AFT filter bags
Reliable baghouse filter bags collect dust with peak efficiency
We know your goal when choosing a filter bag is to meet the unique needs of your business and industry. In 2000, FLSmidth began manufacturing filter bags from our facility in Evans, Georgia. We have since expanded to a second manufacturing facility in Chennai, India to meet the filtration needs of customers across Asia and the Middle East.
FLSmidth provides the three main types of baghouse filter bags and maintains the high standards of quality you expect. Whether you have a pulse-jet, reverse-air or shaker baghouse that needs replacement filters, we can help. We put all our bag filters through a litany of physical and chemical tests to ensure they are free from defects. The review process we put our filter bags through ensures your bags will always fit your cages.
- Pulse-jet filter bag solutions
Pulse-jet filter bags can be manufactured from most available felt or woven filter medias. A pulse-jet baghouse is the most versatile type of baghouse, because it can use filter bags with a variety of media and finishes.
Pulse-jet filter bags are useful for the following industries:
- Waste incineration and utility power
- Carbon black
- Catalyst and chemicals
- Industrial boilers
- Foundries and non-ferrous smelters
- Testing in the manufacturing process
We make sure that you always get the best filter bag performance when you choose FLSmidth. To maintain our high standards, our lab technicians perform tests on our fabric filters including:
- Mullen burst
- Tensile strength
- Microscopic testing
- MIT flex
- Loss on ignition
Your manufacturing process is more efficient when your baghouse filter bags are tested using these rigorous standards.
- Baghouse filter review process
When you make a commitment to a filter bag manufacturer, you expect a certain level of care and customer service. That’s why we review every individual customer order to make sure the bag will fit your baghouse cage perfectly. We always take into account the specific features and requirements of the filter media. And your unique equipment specifications. When your filter bags fit properly, you will be better able to:
- Control air pollution and emissions,
- Reduce the frequency of repairs or service calls and stop losing money due to inefficiency
With these concerns out of the way, you can focus on what is most important to your business, like innovating and changing the world.
ePTFE membrane filter bags save the environment and your bottom line
Longer lasting filters
We know reduced bag life in high temperature pulse-jet baghouse is a major problem for our customers. That’s why we’ve developed the combination of the AFTm ePTFE membrane with the MettaClean fabric option. You’ll receive a product that operates at its best in high temperatures. Now you can extend the life of your filter bags while operating at peak efficiency.
Improved baghouse efficiency
With plants increasing capacity, and being forced to reduce emissions, we have heard your requests for a new and improved membrane filter bag. ePTFE membrane filter bags improve overall baghouse operation and deliver higher throughput and energy savings.
Reduced frequency of filter cleaning
We test cleaning efficiency at our United States and Denmark laboratories to ensure our newest technology improves on current baghouse cleaning standards. ePTFE membrane filter bags improve on the cleaning efficiency of other bag types.
Meet environmental standards
FLSmidth AFT® ePTFE filter bags are designed to meet the environmental standards of your unique industry and location. FLSmidth engineers work with you to develop a filtration strategy to ensure compliance with the following environmental requirements:
- NESHAP (National Emission Standards for Hazardous Air Pollutants)
- MATS (Mercury and Air Toxics Standards)
- MACT (Maximum Achievable Control Technology Compliance)
- CISWI (Commercial/Industrial Solid Waste Incinerators)
- IPPC (Integrated Pollution Prevention and Control) – European Union
Filter media and finishes
Various filter media
FLSmidth’s AFT® baghouse filter bags come in various filter media and finishes. Each fiber type has unique advantages and disadvantages. For example, if your needs are high maximum temperature and acid resistance, fiberglass would the right choice. If your temperature requirements are low and you value flex resistance, cotton would be a better option.
There are many considerations that go into choosing filter media:
- Process conditions
- Gas temperature
- Dew point
- Dust loading
- Particle size
- Potential for process upset
- Expected life
FLSmidth’s bag filter experts will work with you to provide you with the type of bag filter you need.
|Brands||Continuous temperature||Acid resistance||Alkali resistance||Abrasion resistance||Flex resistance|
|Polypropylene, PP||88°C (190°F)||Excellent||Excellent||Excellent||Very good|
|Homopolymer acrylic, Polyacrylonitrile, PAN, DOLANIT®, RICEM®||126°C (260°F)||Good||Average||Good||Very good|
|Polyester, PES||135°C (275°F)||Fair||Fair||Excellent||Very good|
|PPS, Procon®, Torcon®||190°C (375°F)||Very good||Very good||Very good||Very good|
|Aramid, m-Aramide, MAR, NOMEX®||200°C (392°F)||Fair/Poor||Good||Excellent||Excellent|
|Polyimide, PI, P84®||245°C (473°F) *||Good||Fair||Good||Good|
|Fiberglass, GL||260°C (500°F)||Good||Fair||Average||Average|
|PTFE, Polytetrafluorethylene, TEFLON®, RASTEX®, PROFILEN®||260°C (500°F)||Excellent||Excellent||Fair/Poor||Good|
* Continuous temperature in dry conditions
Our baghouse filter experts will recommend the finish best suited for your process. The following finishes are available depending on the type of filter media:
- Tri-Component silicone/graphite/PTFE
- Acid resistant
- Many more
Smart baghouse technology
The combination of optimised design, improved mechanical construction, and advanced filter control results in reduced and easier maintenance, compared to other types of fabric filters on the market. The SmartBag coupled with the SmartPulse Controller EVO II meets the needs of modern-day cement mills.