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Mullite Insulation Brick (1)

Mullite Insulation Brick

Main Composition: Al2O3+SiO2

Application: Insulation layer for various kinds of industrial furnaces

Al2O3: 37-77%

Color: White

Standard Size: 230*114*65 mm

Raw Material: Mullite

Classification temperature: 1260-1730℃

Package: Export wooden pallets and polyboard

Item JM23 JM26 JM28 JM30 JM32
Al2O3(%) ≧37 ≧54 ≧64 ≧72 ≧77
Fe2O3(%) ≦1.0 ≦0.9 ≦0.8 ≦0.7 ≦0.5
Classification Temperature(℃) 1260 1400 1510 1620 1730
Bulk Density(g/cm³) 0.55-1.0 0.8-1.0 0.85-1.0 ≧1.0 ≧1.25
Cold Crushing Strength (Mpa) ≧1.2 ≧1.6 ≧2.1 ≧2.5 ≧3.5
Modulus of Rapture (Mpa) ≧0.9 ≧1.4 ≧1.6 ≧2.1 ≧2.1
Thermal Expansion 1000℃ (%) 0.5 0.7 0.8 0.9 1.1
Reheating Linear Change (%) CT-30 ℃X 8H 1230℃-0.5 1400℃-0.5 1510℃-0.5 1620℃-0.9 1730℃-0.9
Thermal Conductivity (W/m.k) 400℃ 0.14 0.27 0.32 0.41 0.49
600℃ 0.16 0.29 0.34 0.43 0.50
800℃ 0.18 0.31 0.36 0.44 0.51
1000℃ 0.20 0.33 0.38 0.45 0.53
  1. Hot-blast furnace
  2. Regenerative chamber of glass melting furnace
  3. Ceramic kiln
  4. Blind angle furnace lining of petroleum cracking system
  5. Shuttle kiln
  6. Roller kiln
  7. Petrochemical burning pits

Mullite insulation bricks can be directly used in the lining of high-temperature kilns. Currently, they are widely used in the lining of shuttle kilns, roller kilns, glass, and petrochemical kilns. Mullite insulation brick is suitable for hot-face lining and backing of various industrial furnaces in the metallurgy industry, petrochemical industry, ceramic industry, machinery industry, and building materials industry. It is used in applications such as cracking furnaces, conversion furnaces, heating equipment, refining equipment, regenerative apparatus, hot blast stoves, soaking pit furnaces, thermal treatment furnaces, resistance furnaces, tunnel kilns, roller kilns, bell kilns, glass melting furnaces, and more.

  1. High porosity
  2. Low volume density
  3. Good insulation effect
  4. High mechanical intensity
  5. Low thermal conductivity
  6. High temperature resistance
  7. Light weight
  8. Energy-saving

JM23 Mullite Insulation Brick

Brand: HongTai Refractory

Category: Mullite Insulation Bricks

Al2O3: 42-45%

Bulk Density: 0.5-1.0g/cm3

Payment Terms: T/T, Credit Cards, e-Checking, Alibaba Trade Assurance

JM23 Mullite Insulation Brick
JM-23
Model
Volume density Reheating
Linear
Change
Cold
Compression
Strength
Bending
Strength At Normal
Temperature
Thermal Conductivity Al2O3 SiO2 Fe2O3
g/cm3 1300℃*12h, % Mpa Mpa 350℃w/m·k % % %
A 0.5 -1 1.2 0.9 0.16 42 54 0.8
B 0.55 -0.6 1.3 1 0.17 42 54 0.8
C 0.6 -0.5 1.6 1.1 0.19 44 52 0.8
D 0.8 -0.4 2.2 1.3 0.24 45 51 0.9
E 1 -0.2 2.8 1.7 0.31 45 51 0.9
  1. Electric furnace
  2. Metallurgical stove
  3. Cracking furnace in petroleum industry
  4. Hot blast furnace in metallurgy
  5. Ceramic roller kiln
  6. Tunnel kiln
  7. Shuttle kiln for electrical porcelain
  8. Pot furnace for the glass industry
  9. Inner lining of various electrical furnaces
  10. High-temperature equipment
  1. High porosity
  2. Low volume density
  3. Good insulation effect
  4. High mechanical intensity
  5. Low thermal conductivity
JM26 Mullite Insulation Brick (3)

JM26 Mullite Insulation Brick

Brand: HongTai Refractory

Category: Mullite Insulation Bricks

Al2O3: 54-56%

Bulk Density: 0.7-1.0g/cm3

Payment Terms: T/T, Credit Cards, e-Checking, Alibaba Trade Assurance

JM-26
Model
Bulk Density Reheating
Linear
Change Rate
Cold 
Compressive
Strength
Modulus of Rupture  Thermal Conductivity Al2O3 SiO2 Fe2O3
g/cm³ 1400℃*12h MPa Mpa 350℃w/·k % % %
A 0.7 -0.9 2 1.2 0.21 54 42.5 0.8
B 0.8 -0.7 2.5 1.4 0.25 55 41.5 0.8
C 0.9 -0.5 2.8 1.6 0.3 56 40.5 0.9
D 1 -0.5 3.2 1.8 0.32 56 40.5 0.9
  1. Metallurgical Industry: blast furnace, hot blast furnace, heating furnace
  2. Carbon industry: carbon furnace
  3. Ceramic industry: roller kiln, kiln
  4. Glass industry: glass furnace regenerator
  5. Aluminum electrolysis industry: aluminum reduction cell
  6. Other industries: tunnel kiln, shuttle kiln
  1. High porosity
  2. Low volume density
  3. Good insulation effect
  4. High mechanical intensity
  5. Low thermal conductivity

JM28 Mullite Insulation Brick

Brand: HongTai Refractory

Category: Mullite Insulation Bricks

Al2O3: 64-66%

Bulk Density: 0.8-1.0g/cm3

Payment Terms: T/T, Credit Cards, e-Checking, Alibaba Trade Assurance

JM28 Mullite Insulation Brick (1)
JM-28
Model
Volume Density Reheating Linear Change
Rate
Cold Crushing Strength Modulus of rupture Thermal Conductivity Al2O3 SiO2 Fe2O3
g/cm3 1500℃*12h% MPa MPa W/m·K % % %
A 0.8 -1 2.5 1.4 0.28 64 33 0.7
B 0.9 -0.8 2.8 1.6 0.32 65 32 0.6
C 1 -0.7 3.5 1.8 0.34 66 31 0.6
  1. Glass industries iron & steel industries
  2. Ceramics industries non-ferrous metals industries
  3. Electrolytic aluminum industries power generation industries
  4. Heat surface fireproof lining other fire-proof back lining
  1. High porosity
  2. Low volume density
  3. Good insulation effect
  4. High mechanical intensity
  5. Low thermal conductivity

Why Choose Us?

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It’s about your trust. With our ‘Raw and Real Production’, we keep you informed at every step. No hidden tricks, no secrets – just authentic, quality craftsmanship designed for your satisfaction.

What Service We Provide

  1. Sample Service: We provide sample services to our customers, allowing you to evaluate the quality and performance of our products before making a purchase. This helps you make informed decisions and ensures that the product meets your requirements.

  2. OEM Service: We offer OEM (Original Equipment Manufacturer) services, allowing you to customize our products with your own branding. This service enables you to create a unique product that represents your brand identity and meets your specific needs.

  3. Customized Packaging Service: We understand the importance of packaging in creating a lasting impression. With our customized packaging service, you can tailor the packaging of our products according to your brand guidelines or specific requirements. This helps enhance the visual appeal and marketability of your products.

Systematized Production Process​

With our ‘Systematized Production Process’, we deliver consistent quality crafted for your satisfaction. It’s our promise of a premium standard tailored to your needs.

carbon brick production process

Most Asked Questions

We collect a lot of FAQs from our real clients and please check out our FAQ page. Also, feel free to chat with us via LiveChat (on the right), phone call, email, or just simply drop us a line below:

Mullite insulation bricks are made from mullite as the main raw material and have a mullite phase content of over 50%. This makes them able to withstand high temperatures and provide thermal insulation.

The lifespan of Mullite Insulation Brick varies based on the operating conditions and maintenance. However, under normal circumstances, they can last for several years without needing replacement.

Yes, mullite insulation bricks have excellent resistance to most forms of chemical corrosion, making them suitable for use in a wide range of industrial applications.

Mullite insulation bricks should be stored in a dry and ventilated area. Avoid direct contact with the ground and wall.

Choosing the right mullite insulation brick depends on several factors including the specific application, temperature resistance required, mechanical strength, and cost.

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