EN
Oxidation Resistant FMS Needle Felt Bag Anti-wear Stable Filtration For Metallurgy High Temperature Dust Collection
Our FMS composite high-temperature filter bags are blended by fiberglass, PPS and polyester multi-component fiber, perfectly balancing high temperature resistance, wear resistance and cost performance. It can run stably at 240℃ continuously and withstand instantaneous peak temperature up to 260℃, much higher than common polyester filter bags and with lower cost than pure PPS/Nomex media. Special anti-oxidation coating effectively slows down fiber aging and oxidation under medium-high temperature flue gas, greatly improving wear resistance against sharp mineral dust such as cement clinker. Dense composite fiber structure achieves 99.9% filtration efficiency for 0.3μm fine dust, with stable air permeability and low operation pressure drop. Optional PTFE membrane surface treatment upgrades dust release capacity, prevents dust embedding and bag clogging, maintains long-term stable pulse cleaning effect. It is the ideal cost-saving filter material for dry medium-high temperature flue gas working conditions such as cement kilns and industrial boilers, reducing frequent filter bag replacement and workshop long-term operation cost.
Description
Product Standard Parameters
| Parameter Item | Technical Specification |
|---|---|
| Material | FMS composite felt (fiberglass + PPS + polyester blended composite fiber) |
| Fabric Weight | 800g/㎡ / 900g/㎡ (customizable) |
| Filtration Precision | 0.3μm |
| Filtration Efficiency | 99.7% ~ 99.9% |
| Continuous Working Temp | ≤240℃ |
| Instant Peak Temp | 260℃ |
| Core Performance | High temperature resistance, wear resistance, anti-oxidation, low shrinkage, cost-effective |
| Chemical Resistance | Weak acid resistance, moderate anti-oxidation flue gas, not suitable for strong alkali high humidity environment |
| Air Permeability | 2.0~3.8 L/m²/s (200Pa) |
| Application Scenarios | Cement rotary kiln, boiler dust removal, metallurgical furnace, asphalt mixing plant, medium high temperature dry flue gas |
| Post-treatment | Singeing, calendering, anti-oxidation coating, PTFE membrane composite optional |
| Customization Service | Custom diameter, length, bag mouth reinforcement, sewing craft, surface coating |
Core Product Selling Points
1. Excellent Medium & High Temperature Resistance, Wide Applicable Temperature Range
Composite multi-fiber formula supports long-term stable operation at 240℃, instant temperature resistance up to 260℃, far exceeding the temperature limit of ordinary polyester filter bags, suitable for cement kiln, boiler and other medium-high temperature flue gas dust removal.
2. Super Wear Resistance, Resist Sharp Mineral Dust Impact
The composite fiber matrix enhances overall tensile and abrasion resistance, effectively withstands scouring of sharp cement clinker, ore and sand dust, not easy to wear thin or perforate, extending service life greatly.
3. Anti-oxidation Coating Treatment, Slow Fiber Aging
Surface anti-oxidation protective coating isolates oxidative components in flue gas, delays fiber embrittlement and aging under long-term medium-high temperature environment, solving the short-life defect of single glass fiber filter bags.
4. High Cost Performance, Economical Alternative to PPS & Nomex
Compared with pure PPS and Nomex filter bags, FMS composite felt has obvious price advantage while maintaining stable high temperature performance, greatly cutting spare parts procurement expense for medium-high temperature dry flue gas projects.
5. Optional PTFE Membrane Upgrade, Thorough Dust Cleaning & No Bag Blocking
Optional ePTFE microporous membrane composite realizes surface filtration, smooth membrane surface prevents dust embedding into fiber gaps, pulse jet cleaning removes dust cake completely, pressure drop stays stable without rising.
6. Low Thermal Shrinkage, Stable Size Without Air Leakage
Special composite blending process controls ultra-low thermal shrinkage rate under high temperature, filter bag size remains consistent after long-term operation, tight matching with filter cage without gap air leakage.
Incomplete Dust Removal Q&A
Q1 Cement rotary kiln medium-high temperature flue gas, ordinary polyester filter bags shrink and damage quickly?
Ordinary polyester filter bags only withstand 130℃, will shrink, soften and break quickly under above 160℃ kiln flue gas. Our FMS composite filter bag stably operates at 240℃ instant 260℃, no thermal deformation or shrinkage. The wear-resistant fiber structure resists cement clinker scouring, avoids frequent bag replacement and production halt loss.
Q2 High temperature oxidation flue gas leads filter bags to embrittle, crack and leak dust, incomplete dust removal?
Single glass fiber filter bags lack anti-oxidation ability and age rapidly under oxidation flue gas. Our FMS filter bag adds special anti-oxidation coating to block oxidation medium erosion, fiber structure keeps intact long-term. Dense composite felt fully intercepts 0.3μm fine dust, permanently solving dust leakage and exhaust smoke problems caused by bag cracking.
Q3 Sharp mineral dust abrades filter bags thin, easy to form pinhole leakage?
PPS and single glass fiber media have weak wear resistance against hard sharp dust. Our multi-component FMS composite fiber forms tough interwoven structure, strong anti-scouring performance, hard mineral dust cannot wear through the felt layer. Match with PTFE membrane to double prevent fine dust penetration.
Q4 Medium-high temperature working condition needs high temp filter bags, PPS/Nomex procurement cost is too high?
Our FMS composite filter bag balances high temperature resistance and economic cost, suitable for dry medium-high temperature flue gas without strong alkali/high humidity. Its service life is far longer than polyester bags, while the unit price is much lower than PPS and Nomex, comprehensively cutting long-term workshop operation expenditure.
Q5 Filter bags accumulate cement dust hard to clean, differential pressure rises fast and air volume drops?
Uncoated FMS felt has certain dust embedding risk under fine mineral dust. We provide PTFE membrane laminated FMS filter bags, ultra-smooth membrane surface repels dust adhesion, dust cake fully falls off during pulse blowing, stable low-resistance operation without air volume attenuation.
Q6 Industrial boiler dry high temperature flue gas, mixed dust causes filter bags aging fast and frequent replacement?
Our FMS composite formula combines glass fiber high temperature resistance, PPS anti-oxidation and polyester toughness, with extra anti-oxidation coating. It slows fiber aging speed significantly, service cycle is 2~3 times of ordinary polyester bags, reducing shutdown replacement frequency and labor cost.
