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.
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.
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.
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.
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 |