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Lightweight High-Temperature Resistant Ceramic Fiber Wool

Ceramic fiber wool is a lightweight, high-temperature resistant refractory insulation material, primarily made from high-purity alumina (Al₂O₃), silica (SiO₂), or zirconia-containing raw materials. It is produced by electric melting blowing or fiber spinn
Description Review
Description

1. Product Overview
Ceramic fiber wool is an excellent lightweight, high-temperature refractory insulation material featuring low thermal conductivity, thermal shock resistance, and chemical stability. It is a fundamental material widely used in modern industrial kiln insulation, fire protection, and energy-saving applications.
Ceramic fiber wool can be used as a raw material for various shaped products such as boards, blankets, and modules, or applied directly for high-temperature gap filling, insulation of movable equipment, and targeted filling of special parts.

 

2. Performance Features

(1)High temperature resistance: Continuous service temperature ranges from 1050℃ to 1430℃ depending on the type

(2)Low thermal conductivity: Effectively reduces heat loss and improves furnace thermal efficiency

(3)Excellent chemical stability: Resistant to oxidation and most acid and alkali corrosion

(4)Superior thermal shock resistance: Does not crack or pulverize under rapid cooling or heating

(5)Fluffy and compressible: Suitable for filling irregular or complex shapes

(6)Low heat capacity: Heats up quickly and saves energy

(7)Eco-friendly: Asbestos-free, non-toxic, harmless, and compliant with RoHS standards

(8)Good processability: Suitable for vacuum forming, wet forming, spraying, pressing, and other processes

 

3. Technical Parameters

Item

STD

HP

HA

ZA

HTZ

Classification Temperature ℃

1260

1260

1360

1360

1430

Service Temperature ℃

≤1050

≤1100

≤1200

≤1200

≤1350

Color

Pure White

Pure White

Pure White

Pure White

Pure White

Thermal Conductivity (W/m·K)

 

 

 

 

 

@400℃

0.095

0.095

0.114

0.114

0.122

@500℃

0.123

0.123

0.135

0.135

0.153

@600℃

0.158

0.158

0.191

0.191

0.184

Permanent Linear Change (%)

≤-3 (at specified temp/time)

≤-3

≤-3

≤-3

-

Chemical Composition (%)

 

 

 

 

 

Al₂O₃

45-46

47-49

52-55

45-46

39-40

Al₂O₃+SiO₂

97

99

99

-

-

Al₂O₃+SiO₂+ZrO₂

-

-

-

99

99

ZrO₂

-

-

-

5-7

15-17

Fe₂O₃

≤1.0

≤0.2

≤0.2

≤0.2

≤0.2

Na₂O+K₂O

≤0.5

≤0.2

≤0.2

≤0.2

≤0.2

Packaging: Plastic woven bags and cartons
Certifications: CE, ISO9001-2008; ISO14001-2004, SGS, RoHS, SASO, REACH

 


4. Manufacturing Process & Types

Ceramic fiber wool can be categorized by manufacturing methods:
Fiber Spun Type: Produced by centrifugal spinning of molten material, resulting in longer, tougher fibers suitable for modules, boards, blankets.
Blown Type: Made by high-pressure air blowing molten material into finer fibers with higher softness, ideal for vacuum forming and precision insulation parts.
Bio-soluble Type: Special formulations allow gradual dissolution in the human body, making it safer and more environmentally friendly for applications with strict health requirements like construction and fire protection.

 

5. Applications
Widely used in various high-temperature industries:

Industrial kiln gap and joint insulation

Flexible insulation linings for high-temperature equipment

Refractory filling around furnace doors, observation windows, valves

Insulation wrapping for high-temperature pipes and vessels

Raw material for shaped ceramic fiber vacuum-formed products

Base materials for sprayed insulation layers

High-temperature filling in laboratories and electric heating equipment

Thermal insulation for glass, steel, metallurgy, and chemical industry equipment

 

6. Packaging and Storage

✅  Packaging: Double-layer PE bags with woven bags or cartons outside; weight options: 10kg, 15kg, 20kg (customizable); supports bulk bags, compressed packaging, vacuum packaging (export-friendly).

Storage: Store sealed in dry, ventilated warehouse; avoid moisture, acid/alkali contact, and heavy compression deformation; recommended storage period within 12 months for optimal performance.

 

7. Selection Guide

Working Temperature (℃)

Recommended Type

Typical Applications

≤1000

Standard / High Purity

Industrial furnace gap filling, backing insulation

1000–1200

High Alumina (HA)

Soft insulation structures for petrochemical and metallurgy equipment

1200–1350

Zirconia-containing

High-temperature smelting, heating furnaces, ceramic firing zones

≤1100 & Environmental Req

Bio-soluble

Shipbuilding, building insulation, environments requiring safe human contact

 


8. Typical Cases

Case 1: Steel plant converter furnace door filling (Shandong)
Requirements: ≥1200℃ temperature resistance, strong insulation, frequent opening/closing
Solution: Zirconia-containing fiber spun ceramic fiber wool + stainless steel mesh bag
Result: Door temperature decreased by 60℃, insulation significantly improved, service life up to 18 months

Case 2: Ceramic factory heat treatment furnace gap repair (Vietnam)
Requirements: Fast repair of furnace structural gaps, durable and convenient
Solution: Blown-type ceramic fiber wool, manually compressed to fill high-temperature gaps
Result: Repair completed within 24 hours, equipment restart time shortened by 3 days

 

9. FAQ

Q1: Is ceramic fiber wool classified as hazardous? Any transport restrictions?
A1: No, it is non-toxic and odorless, classified as general industrial goods. Handle with care to avoid moisture and compression.

 

Q2: Can you provide test reports and MSDS?
A2: Yes, we provide routine factory test reports, MSDS (in Chinese and English), RoHS compliance, and other documentation.

 

Q3: Is the wool prone to pulverization? What is the service life?
A3: Fiber spun wool has higher toughness and resists pulverization. Typical service life is over 2 years for filling applications and over 5 years for vacuum-formed products.

 

Q4: Compared with ceramic fiber blankets/modules, what are the special applications for ceramic fiber wool?
A4: Wool is especially suitable for insulation or repair in complex structures, irregular shapes, deformation areas, and movable devices.

 

Q5: Can packaging be customized?
A5: Yes, customized packaging options including compressed bags, bulk bags, 20kg special packs, labeled export packaging are all available.

 


10. Services & Support

Free sample requests

Product selection consultation and usage guidance

Compatible sales of ceramic fiber modules, boards, papers, blankets, and shaped parts

Stock assurance and special pricing for long-term partners

Support for export, OEM, certification, and origin documents

 

Ceramic fiber wool is a foundational refractory insulation material widely used in metallurgy, power generation, kilns, petrochemical, construction, aerospace, and other high-temperature industries. Its unique structure and performance make it indispensable for addressing high-temperature heat loss, fire protection, and environmental safety challenges.

We offer a variety of types and packaging forms, supporting customization, technical guidance, and long-term supply cooperation. For detailed technical data, sample requests, or bulk purchasing solutions, please contact our professional team.

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