What Is Quartz Needle Felt?

Quartz needle felt is a non-woven filter material made from high-purity quartz fibers. It is produced by interlocking quartz fiber webs with barbed needles. This process creates a dense, porous structure ideal for high-temperature and high-purity filtration needs.

Key Characteristics

Extreme temperature resistance is its most prominent feature. It can withstand temperatures up to 1000°C (1832°F), far higher than most other filter materials. This makes it suitable for extreme heat applications.
High purity is another key trait. Quartz fibers have low impurity content, ensuring no secondary pollution during filtration. This is critical for applications requiring clean filtrate or exhaust.
It also offers good chemical stability. It resists most acids and organic solvents, maintaining performance in harsh chemical environments. This extends its lifespan in industrial settings.

Applications

Waste incineration plants use it for flue gas filtration. It captures dust and pollutants from high-temperature incineration exhaust, meeting strict emission standards.
The metallurgical industry relies on it for filtration in steelmaking and non-ferrous metal smelting. It handles high-temperature flue gases and protects downstream equipment.
Chemical and petrochemical plants use it for process gas filtration. Its chemical resistance ensures reliable performance in corrosive gas environments.

Selection Tips

Confirm the maximum operating temperature. Choose a felt rated for temperatures above your application’s peak heat. This prevents material degradation and filtration failure.
Check the purity level. For high-purity applications, select felt with low impurity content. Higher purity ensures no contamination of processes or products.
Evaluate air permeability. Balance filtration efficiency with air flow needs. Denser felts filter better but may restrict air flow excessively.
 

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