Silicon Nitride-Carborundum Fire Brick

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1. Characteristic

High strength

Low thermal expansion coefficient

Good thermal conductivity and thermal shock resistance

Good resistance to liquid aluminum erosion capability

High erosion

2. Applications

Widely used in large aluminum electrolytic cell of lining material. In the electrolytic aluminium industry, because of nitride bonded silicon carbide products can be made thin wall lining, enlarge the tank capacity, improve the thermal conductivity, can rapid cooling, and they are permitted to enter a higher power, increase the tank production capacity, at the same time, in its surface can form alumina and cryolite of eutectic content, in order to protect the tank lining work layer, prolong service life, therefore, this product is aluminum industry generally welcome.

3. Physical and Chemical Index of silicon nitride bonded silicon brick used in cooling stave

ITEM		INDEX
SiC %		72 Min
Si3N4 %		21 Min
Fe2O3 %		0.5 Max
Porosity %		18 Max
Bulk density g/cm3		2.65-2.70
Bending strength MPa	Room temperature °C	42
	1400 °C	45
CCS MPa		150 Min
Thermal conductivity w/m·k 1250 °C		15-18
Tolerance	0-100 mm	±1.0
	101-300 mm	±1.5
	301-500 mm	±2.0
	More than 500 mm	±0.5%
	Surface irregularity	0.2 Max
	Face verticality	0.5 Max
	Diagonal difference	2 Max

Q:Are insulating fire bricks suitable for use in cement plants?: Yes, insulating fire bricks are suitable for use in cement plants. They are commonly used in high-temperature applications, such as kilns and furnaces, due to their excellent thermal insulation properties and ability to withstand extreme heat. Insulating fire bricks can help optimize energy efficiency, reduce heat loss, and provide a more controlled and stable environment in cement plants.

Q:Can insulating fire bricks be used for high-temperature applications?: Insulating fire bricks are widely employed for applications involving high temperatures. These bricks have been crafted to offer exceptional thermal insulation and endure extreme temperatures. Depending on the specific type and composition of the brick, they can typically withstand temperatures of up to 2600°F (1427°C) or even higher. Kilns, furnaces, and industrial settings that necessitate high temperatures commonly utilize insulating fire bricks. These bricks are renowned for their minimal thermal conductivity, which aids in reducing heat loss and enhancing energy efficiency. Moreover, these bricks possess the advantages of being lightweight, long-lasting, and resistant to thermal shock, rendering them ideal for environments with elevated temperatures.

Q:Can insulating fire bricks be used in the construction of thermal insulation roofs?: Yes, insulating fire bricks can be used in the construction of thermal insulation roofs. Insulating fire bricks are specially designed to have high thermal insulation properties, making them an ideal choice for applications that require heat retention and energy efficiency. These bricks are made from lightweight materials such as clay, which have low thermal conductivity and high resistance to heat transfer. This allows them to effectively reduce heat loss or gain, making them suitable for use in thermal insulation roofs. Additionally, insulating fire bricks are durable and can withstand high temperatures, making them a reliable choice for long-term use in roofing applications.

Q:What is the typical moisture content of an insulating fire brick?: The typical moisture content of an insulating fire brick is usually less than 1%.

Q:Are insulating fire bricks resistant to electrical conductivity?: Yes, insulating fire bricks are resistant to electrical conductivity.

Q:Can insulating fire bricks be used in ceramic fiber modules?: Insulating fire bricks cannot be utilized in ceramic fiber modules, as their compositions and constructions greatly differ. Insulating fire bricks are composed of dense refractory materials, typically containing high levels of alumina and silica. These materials offer exceptional thermal insulation and high temperature resistance. Conversely, ceramic fiber modules are made of lightweight, flexible ceramic fibers that provide superior thermal insulation properties. They are primarily used to line furnaces, kilns, and other high-temperature applications. Insulating fire bricks are solid and rigid, whereas ceramic fiber modules are flexible and can be easily molded and installed. Therefore, trying to incorporate insulating fire bricks into ceramic fiber modules would not only be impractical but also ineffective in achieving the desired insulation properties and overall performance. To ensure safety, efficiency, and longevity, it is crucial to use materials specifically designed for their intended applications.

Q:What's the price of lightweight refractory bricks?: In addition, general price comparisons are meaningless and need to be based on the use of demand = quality of products. After all, good quality is the driving force of continuous production.

Q:Are insulating fire bricks suitable for use in residential fireplaces?: Yes, insulating fire bricks are suitable for use in residential fireplaces. They are designed to withstand high temperatures and provide insulation, making them an ideal choice for ensuring the safety and efficiency of a residential fireplace.

Q:Can insulating fire bricks be used for insulation in cement kilns?: Yes, insulating fire bricks can be used for insulation in cement kilns. Insulating fire bricks are made from lightweight materials with high insulation properties, such as ceramic fibers or expanded clay. These bricks are designed to have low thermal conductivity, meaning they can effectively reduce heat transfer and retain heat within the kiln. Cement kilns operate at very high temperatures, often exceeding 1,400 degrees Celsius (2,500 degrees Fahrenheit). The use of insulating fire bricks in the kiln can help prevent heat loss, improve energy efficiency, and reduce fuel consumption. These bricks create a barrier between the hot gases inside the kiln and the outer environment, reducing the amount of heat that escapes. Moreover, insulating fire bricks have excellent resistance to thermal shocks, allowing them to withstand the extreme temperature fluctuations that occur in cement kilns. This durability ensures long-lasting insulation, reducing the need for frequent maintenance and replacement. However, it is important to note that the specific type and composition of insulating fire bricks required for cement kiln insulation may vary depending on the kiln's design, operating conditions, and other factors. It is advisable to consult with experts or manufacturers who specialize in refractory materials to ensure the correct selection and installation of insulating fire bricks for cement kiln insulation.

Q:Can insulating fire bricks be used in the construction of thermal insulation walls?: Yes, insulating fire bricks can be used in the construction of thermal insulation walls. Insulating fire bricks are specially designed bricks that have a low thermal conductivity, which means they are excellent at preventing the transfer of heat. This makes them ideal for use in thermal insulation applications. When constructing thermal insulation walls, insulating fire bricks can be used as the primary material or in conjunction with other insulation materials such as foam boards or mineral wool. These bricks are typically lightweight, which makes them easier to handle and install. They also have high temperature resistance, allowing them to withstand the heat generated by fireplaces, ovens, or other heat-producing appliances. Insulating fire bricks offer several benefits for thermal insulation walls. They help to minimize heat loss or gain, thereby improving energy efficiency in buildings. They also help to reduce noise transmission, making them suitable for soundproofing applications. It is important to note that insulating fire bricks may not be suitable for all types of walls or building structures. Factors such as building codes, environmental conditions, and specific requirements of the project should be considered when determining if insulating fire bricks are the appropriate choice for thermal insulation walls. Consulting with a professional architect or engineer is recommended to ensure the best insulation solution for a specific construction project.

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