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Lightweight Mullite Insulation Brick
Lightweight Mullite Insulation Brick 2
Lightweight Mullite Insulation Brick 4
Lightweight Mullite Insulation Brick
Lightweight Mullite Insulation Brick 2
Lightweight Mullite Insulation Brick 4
Lightweight Mullite Insulation Brick
Mullite insulation bricks are high-performance refractory materials known for their exceptional thermal insulation, lightweight properties, and strong resistance to high temperatures and chemical erosion. These bricks are ideal for various high-temperature applications, including furnaces, kilns, and reactors in industries such as steel, ceramics, glass, and petrochemicals.
Classification temperature 1260℃ - 1760℃
Grade FJM23, FJM25, FJM26, FJM28, FJM30, FJM32
Capacity 1,000,000pcs NF1 bricks per month
Customized branding and packaging accepted
Free samples can be provided upon request
Introduction
Features
Photo Gallery
Product Knowledge
Technology Parameters
Related Products
Chemical Composition and Structure of Mullite Insulation Bricks
Mullite insulation bricks are primarily composed of mullite, a mineral made up of aluminum oxide (Al₂O₃) and silicon dioxide (SiO₂). The high alumina content, typically ranging from 65% to 75%, gives these bricks their superior refractory properties. Mullite forms a unique crystalline structure that includes small amounts of glass phase, cristobalite, and corundum, enhancing its resistance to thermal shock and mechanical stress.

The production of mullite insulation bricks involves high-temperature sintering processes where raw materials, including pure alumina and silica, are fired at temperatures reaching up to 1760°C. This firing process results in a controlled pore structure that minimizes thermal conductivity and maximizes strength. The combination of these factors ensures that mullite bricks can withstand extreme temperatures and maintain their structural integrity over time. Additionally, the low impurity content in mullite bricks contributes to their stability and durability, making them an excellent choice for use in highly corrosive environments.

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Key Advantages of Mullite Insulation Bricks
  • Exceptional Permanent Linear Change (PLC):
    Produced using high-purity raw materials and subject to prolonged high-temperature sintering, FJM mullite insulation bricks exhibit minimal PLC for safe, long-lasting application.
  • Low Thermal Conductivity and High Insulation Efficiency
    Mullite insulation bricks have low thermal conductivity which significantly reduces heat loss in high-temperature applications. This property allows for thinner furnace walls, improving energy efficiency and lowering operational costs. The low heat storage capacity of these bricks also facilitates faster heat-up and cool-down cycles, making them suitable for processes requiring rapid temperature changes.
  • Low Density & Heat Storage:
    Lightweight and thermally insulating, mullite insulation brick absorb minimal heat, offering fuel savings and rapid heat-up in cyclical heating equipment.
  • High Purity:
    Minimal impurities like iron and alkali flux ensure consistent refractory performance in specified atmospheres.
  • Excellent Chemical Resistance
    Mullite insulation bricks exhibit strong resistance to acid and alkali erosion, making them ideal for use in harsh chemical environments. Their low impurity levels, including minimal iron and alkali flux, prevent reactions that could compromise the refractory lining, ensuring long-term performance in challenging conditions such as glass melting furnaces and petrochemical reactors.
  • Thermal Shock Resistance
    The unique crystalline structure of mullite bricks provides excellent resistance to thermal shock, which is the ability to withstand rapid temperature changes without cracking or spalling. This property is particularly valuable in applications like blast furnaces and ceramic kilns, where the material is subject to frequent heating and cooling cycles.
Photo Gallery of Mullite Insulation Brick
Mullite Insulation Brick production equipment 1
Mullite Insulation Brick production equipment 2
Mullite Insulation Brick factory
Mullite Insulation Brick factory 1
Mullite Insulation Brick factory 2
Insulating Firebricks application
Applications of Mullite Insulation Bricks

Mullite insulation bricks are versatile and can be used in various high-temperature applications across multiple industries:

1. Steel and Metallurgy Industry
In the steel industry, mullite bricks are commonly used in hot blast stoves, blast furnaces, reheating furnaces, and ladles. Their ability to withstand high temperatures and corrosive environments makes them ideal for lining these critical components, ensuring efficient operation and prolonged service life.

2. Ceramic and Glass Industry
Mullite insulation bricks are extensively used in the ceramic industry for lining kilns, including roller kilns, tunnel kilns, and shuttle kilns. In the glass industry, they serve as linings for glass melting furnaces, regenerators, and tempering furnaces, where their low thermal conductivity and chemical resistance are particularly beneficial.

3. Petrochemical Industry
In petrochemical processes, mullite bricks are used in furnaces, reactors, and refining vessels, where their resistance to chemical attack and thermal shock ensures reliable performance and longevity. They are particularly effective in applications involving high-temperature gases and corrosive chemicals.

4. Power Generation and Other Industrial Furnaces
Mullite insulation bricks are also widely employed in power generation facilities for lining boilers, incinerators, and other high-temperature equipment. Their ability to reduce heat loss and improve insulation makes them ideal for enhancing the efficiency and performance of power generation systems.

Size is no longer a limitation

Most Firebird IFBs are available in large sizes, eliminating the need for mortar joints and allowing for dimensions up to 600*500*100mm. This flexibility removes the design limitations associated with traditional brick shapes and sizes. The nominal cost of block sizes is offset by significant labor savings and fewer mortar joints, making them a cost-effective solution. Additionally, the reduced number of joints improves the structural integrity and thermal efficiency of installations, providing long-term benefits.

Customizing insulating firebricks for your project

Firebird offers versatility beyond standard shapes. They can be custom fabricated to meet specific needs. This allows for intricate designs in high-heat applications like furnaces, kilns, and fireplaces. Imagine a brick with special hole or cutouts to improve air circulation or heat flow! These special shapes can be made with features like:

Holes,Flycuts,Channels,Tapers,Rounded edges,Tongue & Grooves,Notches and chord cuts

By using custom insulating fire bricks, builders can create unique and efficient heating equipments.

Technology Parameters
FJM Series Insulating Firebrick
Grade Standard Unit FJM23L FJM23 FJM24 FJM25 FJM26 FJM26-60 FJM26H
Classification Group ISO 2245 125-0.5-L 125-0.6-L 130-0.8 135-0.8-L 140-0.8-L 140-0.8-L 140-0.9
ASTM C155 23 23 24 25 26 26 26
Classification Temperature 1260 1260 1300 1350 1430 1430 1430
Bulk Density ASTM C134 g/cm³ 0.5 0.6 0.8 0.8 0.8 0.8 0.9
Cold Crushing Strength ASTM C133 MPa 1.2 1.6 2 2 2.5 2.4 2.8
Modulus of Rupture ASTM C133 MPa 0.7 0.9 1.2 1.2 1.4 1.3 1.5
Permanent Linear -0.3 -0.2 -0.5 -0.5 -0.4 -0.2 -0.2
Change Thermal @ ℃×24h
conductivity
ASTM C210 % 1230 1230 1300 1350 1400 1400 1400
400℃ ASTM C182 W/m.K 0.17 0.19 0.26 0.21 0.21 0.23 0.3
600℃ 0.19 0.23 0.28 0.27 0.27 0.28 0.32
800℃ 0.22 0.24 0.3 0.3 0.3 0.31 0.35
1000℃ 0.24 0.25 0.34 0.32 0.32 0.33 0.38
1200℃ 0.35 0.36 0.39
Chemical Composition
Al2O3 % 42 42 45 50 55 60 55
SiO2 54 54 48 46 41.5 37 41.5
Fe2O3 0.8 0.8 1 0.9 0.8 0.7 0.8
TiO2 1.2 1.2 1.2 1.3 1 0.7 1
Cao+MgO 0.7 0.7 0.7 0.7 0.7 0.5 0.7
Na2O+K2O 1.3 1.3 1.2 1.1 1 1.2 1

 

 

Grade Standard Unit FJM27 FJM28 FJM30 FJM30S FJM32 FJM32A
Classification Group ISO 2245   ASTM C155 145-0.9-L 27 150-0.9- L 160-1.0-L 30 160-1.0-L 30 165-1.2-L 32 170-1.3-L 32
Classification Temperature 1450 1540 1600 1600 1650 1760
Bulk Density ASTM C134 g/cm3 0.9 0.9 1 1 1.2 1.3
Cold Crushing Strength ASTM C133 MPa 3 2.8 3 4.5 4.5 4
Modulus of Rupture ASTM C133 MPa 1.5 1.5 1.8 2 2.5 2
Permanent Linear  Change @ ℃×24h ASTM C210 % -0.5  1450 -0.8  1510 -0.8  1600 -0.2  1600 -0.7  1650 -0.9  1730
Thermal Conductivity
400℃ ASTM C182 W/m.K 0.3 0.3 0.4 0.4 0.43 0.49
600℃ 0.32 0.32 0.42 0.42 0.5 0.5
800℃ 0.35 0.35 0.44 0.44 0.51 0.51
1000℃ 0.38 0.38 0.45 0.45 0.53 0.53
1200℃ 0.39 0.39 0.47 0.47 0.55 0.55
Chemical Composition
Al2O3 % 60.5 65 72 64 75 77
SiO2 36 32.3 25.7 33.5 23 21
Fe2O3 0.8 0.6 0.5 0.5 0.4 0.4
TiO2 0.7 0.7 0.7 0.7 0.6 0.6
Cao+MgO 0.5 0.5 0.3 0.3 0.3 0.3
Na2O+K2O 1.2 0.9 0.8 0.8 0.7 0.7

 

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    Frequently asked questions (FAQs)
    Can we visit your factory?
    Absolutely! We welcome plant audits and visits to our facilities. Please note that Firebird insulation refractory and high-performance refractories are manufactured in separate plants. Let us know your requirements, and we can arrange a convenient schedule for your visit to ensure a smooth and informative experience.
    How does Firebird ensure the quality of its refractory products?
    At Firebird, quality assurance is integral to our operation, embodying our commitment to transparency and excellence. Here's how we ensure top-notch quality: Transparency in Production: After you place an order, we provide you with a detailed production plan, outlining each stage of the manufacturing process. Weekly Progress Updates: We keep you informed with weekly updates, so you always know the status of your order. Detailed Testing: Every batch of products undergoes thorough testing, and we provide a detailed test report that includes data on chemical composition, physical properties, and compliance with international standards. Comprehensive Inspections: We meticulously check the appearance, size, and weight of each product to ensure they meet our stringent quality criteria. Shipping Documentation: To maintain transparency and trust, we share photos of your order at the shipping stage, allowing you to see the final packaging and labeling.
    Can you provide samples of your products?
    Yes, we can provide samples of our products. We understand the importance of testing materials in your specific application and are happy to assist with samples upon request. Please contact our sales team to arrange for sample delivery.
    Do you accept custom dimensions for your refractory products?
    Absolutely. Firebird specializes in customizing refractory materials to meet specific customer requirements. Whether you need custom shapes, sizes, or specifications, our team can accommodate your needs. Please provide your detailed requirements, and we will work closely with you to deliver the perfect solution.
    What is the typical delivery time for orders?
    Our standard delivery time is generally between 10 to 15 days for most products. However, for specialized or customized bricks, the delivery time may extend to approximately one month. We strive to meet our customers' timelines and will provide an estimated delivery date upon order confirmation.
    What payment methods do you accept?
    We accept payments via T/T (Telegraphic Transfer) in major currencies such as Euro (EUR) and US Dollar (USD). Our payment terms are flexible, and we can accommodate different payment schedules based on the agreement.
    Who are your main customers?
    Firebird takes pride in its extensive global reach, serving a diverse clientele across more than 40 countries. Our customers range from Southeast Asia's dynamic industrial centers to the heartlands of the USA. We also have significant market presence in Europe, South America, and Africa. This broad geographical distribution allows us to cater to various industries, including glass manufacturing, steel production, and other high-temperature industrial applications, ensuring our products meet the specific needs of each region.