What are the main applications of Basalt Fiber Nonwoven Needle-Punched Felt?

Basalt Fiber Nonwoven Needle-Punched Felt is primarily used in high-temperature environments such as construction, industrial furnaces, and aerospace applications. It is particularly effective in steel mills and kilns where high heat and flame resistance are required. The felt's ability to withstand temperatures up to 1000°C makes it a preferred choice for insulation in these scenarios.

How does the thickness of the felt affect its insulating properties?

The thickness of Basalt Fiber Nonwoven Needle-Punched Felt directly correlates with its insulating capabilities. Thicker felts provide better insulation against heat, making them suitable for applications where extreme temperatures are encountered. Our felts are available in thicknesses ranging from 3mm to 10mm, allowing customers to select the appropriate level of insulation based on their specific needs.

Can Basalt Fiber Nonwoven Needle-Punched Felt be used in outdoor applications?

Yes, Basalt Fiber Nonwoven Needle-Punched Felt can be used in outdoor applications, especially when heat insulation is required. Its resistance to moisture and high temperatures makes it suitable for outdoor use. However, it is recommended to protect the felt from direct exposure to the elements with a weatherproof covering to prolong its lifespan and maintain its insulating properties.

Basalt Fiber Nonwoven Needle-Punched Felt

Specifications and dimensions can be customized according to customer requirements.

Basalt fiber is a new type of high-tech inorganic fiber made from basalt ore, which is melted at a high temperature of approximately 1,500°C and then drawn into fibers. It possesses a variety of excellent properties, including high strength, resistance to acids and alkalis, high-temperature resistance, fire resistance, UV resistance, non-hygroscopicity, and electrical insulation.

Grammage （g/ m²）

900-950

Gauge（mm）

2.5-3.0

Air permeability （ m3/m²/min@200Pa）

5-8

Continuous Operating Temperature（℃）

300

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Why Choose Basalt Fiber Nonwoven Needle-Punched Felt?

Basalt fiber nonwoven needle-punched felt features a three-dimensional mesh structure, uniformly distributed pores, and excellent filtration performance. It fills the gap in filter media for high-temperature flue gas (300–350°C) and serves as a premium material for filtering high-temperature corrosive gases, flue gas, and corrosive liquids.

It is primarily used for high-temperature dust filtration in the monocrystalline silicon, carbon black, steel, non-ferrous metals, chemical, and waste incineration industries.

Technical Specifications

Needle Felt Composition	Grammage （g/ m2）	Gauge （ mm）	Air permeability （ m3/m²/min@200Pa）	Continuous Operating Temperature（℃）	Short-Term Operating Temperature（℃）	Acid Resistance	Alkali Resistance	Abrasion Resistance
Basalt	900-950	2.5-3.0	5-8	300	350	Excellent	Excellent	Excellent

Key Technical Attributes

STEP 1

Temperature Resistance

Our Basalt Fiber Nonwoven Needle-Punched Felt can withstand continuous exposure to temperatures up to 300°C, providing excellent thermal protection in high-heat environments.

STEP 2

Excellent flame retardant properties

Basalt fiber is an inorganic fiber with excellent flame retardant and non-combustible properties, making it suitable for industrial flue gas environments containing high-temperature particles or sparks.

STEP 3

Good dimensional stability

it does not shrink significantly at high temperatures, which helps maintain the size of the filter bag and the stable operation of the filtration system.

STEP 4