High-Temperature Filter Bags for Roasting Flue Gas Dust Removal

Product Details

High-temperature filter bags for roasting flue gas dust removal are core filtration components specially designed for high-temperature flue gas purification in roasting processes of metallurgy, chemical, building materials and other industries. They adapt to flue gas environments of 180–260°C and can withstand short-term peak temperatures up to 300°C, efficiently capturing dust particles in roasting flue gas to help enterprises meet emission standards and achieve energy-saving production.

Made of high-temperature resistant fibers such as aramid, PPS, PTFE and FMS via needle-punching technology, some are equipped with PTFE membrane or composite gradient structure. They feature excellent thermal stability with low shrinkage and embrittlement at high temperatures, and thermal shrinkage rate ≤ 0.5%. Targeting acidic gases like SO₂ and NOₓ in roasting flue gas, they are treated with waterproof, oil-proof and anti-corrosion coatings, delivering strong acid and alkali resistance and hydrolysis resistance to adapt to complex flue gas conditions.

With high filtration precision, the capture efficiency for dust above 0.1μm is ≥ 99.9%, and emission concentration is stably controlled at 5–10mg/m³, meeting ultra-low emission requirements. The smooth surface prevents dust adhesion, enabling thorough pulse cleaning and low operating resistance. They bear high-intensity cleaning shocks, feature high mechanical strength, wear and folding resistance, with a service life of up to 2–3 years.

Widely used in high-temperature flue gas dust removal scenarios such as lithium ore roasting, metallurgical rotary kilns, cement kiln backs and chemical roasting furnaces, they are key consumables for high-temperature bag dust collectors, effectively solving the problems of high temperature, high dust and easy corrosion in roasting flue gas, ensuring long-term stable operation of dust removal systems.

Parameters

Material: Aramid, PPS, PTFE, FMS composite

Continuous temperature: 180–260°C; Instantaneous temperature: 300°C

Thermal shrinkage: ≤0.5%

Filtration efficiency: ≥99.9%

Emission concentration: 5–10mg/m³

Standard sizes: Φ130/160×2000–8000mm (customizable)

Surface treatment: High-temperature setting, singeing, calendering, waterproof & oil-proof, PTFE membrane

Service life: 24–36 months

Applications: Roasting furnaces, rotary kilns, high-temperature kilns in metallurgy, building materials and chemical industries