Cordierite-mullite Refractory Brick

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Specifications

Cordierite-mullite brick
1. low thermal expansion coefficient,
2. excellent stability of thermal shocking

Alumina-Silica Refractory Series Products

Cordierite-mullite brick is of low thermal expansion coefficient, excellent stability of thermal shocking, it is used in assembly brick for hot blast stove.
Sintered mullite brick mineral component is mullite phase. It has the advantage of high temperature structural strength, strong resistance to chemical corrosion. It is used in the lining of high temperature kiln.
Silimanite bricks possesses the better refractoriness temperature under load and the good stability of thermal shocking. It is mainly used in the blast furnace, wind pipe of the blast heating cupola, the lime kiln, the discharging channel and cover board of the glass melting kiln.

Physical and chemical index :

			Sillimanite Bricks	Cordierite brick	Corundum-Mullite Brick		Cordierite-Mullite Brick
	M-68	M-72	GCS	JQS	AM-75	AM-80	JM
Al₂O₃%	≥68	72	≥55	55±5	≥75	≥80	≥50
Fe₂O₃ %	≤1.5	≤1.5	≤1.5	≤1.5			≤2
MgO %				2.0			1.73~3
SiO₂ %							≤45
Apparent Porosity %	≤21	≤19	≤17	≤25	≤17	≤17	≤23
Bulk Density g/cm³	≥2.45	≥2.50	≥2.45	≥2.30	≥2.55	≥2.60	≥2.30
Cold Crushing Strength Mpa	≥50	≥60	≥55	≥40	≥70	≥70	≥70
Modulus of Rupture Mpa					≥15	≥15
0.2Mpa Refractoriness Under Load T_0.6	≥1580	≥1600	≥1550 (T₂)	≥1400	≥1680	≥1700
Reheat liner change 2h				1450°C ±0.2
Thermal Shock Resistances 100°C water cycles			≥15				≥100
20-1000°C Thermal Expansich 10^-6/°C	4.5-4.9

Q:Can insulating fire bricks be used in lime plants?: Yes, insulating fire bricks can be used in lime plants. Insulating fire bricks are specially designed to have low thermal conductivity, which means they are excellent at preventing heat transfer. In lime plants, where high temperatures are required for the calcination process, insulating fire bricks can be used to line the kilns and other high-temperature areas. These bricks help to retain the heat within the lime kilns, reducing energy loss and improving overall efficiency. Additionally, insulating fire bricks are resistant to chemical attacks and can withstand the harsh conditions in lime plants, making them a suitable choice for this application.

Q:What are the advantages of using insulating fire bricks over other insulation materials?: Insulating fire bricks offer numerous benefits compared to other insulation materials. To begin with, their high thermal conductivity effectively prevents heat transfer, making them ideal for applications where heat containment is crucial, such as furnaces, kilns, and industrial ovens. Their ability to withstand high temperatures and prevent heat loss makes them a reliable insulation option. Furthermore, insulating fire bricks are extremely durable and resistant to wear and tear. They are constructed with high-quality refractory materials designed to withstand extreme conditions like thermal shocks and chemical exposure. This durability ensures a longer lifespan and reduces the need for frequent replacements or repairs. Another advantage lies in their versatility. Insulating fire bricks come in various shapes and sizes, allowing for easy customization and installation in different applications. They can be effortlessly cut or shaped to fit specific requirements, making them suitable for complex geometries or curved surfaces. This flexibility allows for efficient insulation in a wide range of settings. Moreover, insulating fire bricks possess excellent insulation properties even at lower densities. This means they can provide optimal thermal insulation while also reducing the overall weight of the structure. This is particularly advantageous in industries where weight reduction plays a critical role, such as aerospace or automotive manufacturing. Lastly, insulating fire bricks are environmentally friendly. They are typically manufactured using natural and recyclable materials, minimizing their impact on the environment. Additionally, their long lifespan and low maintenance requirements contribute to sustainability by reducing waste generation and energy consumption. In conclusion, the advantages of utilizing insulating fire bricks over other insulation materials encompass high thermal conductivity, durability, versatility, lightweight design, and environmental friendliness. These characteristics establish them as the preferred choice for insulation in various industries and applications.

Q:Are insulating fire bricks resistant to thermal shock cracking?: Yes, insulating fire bricks are specifically designed to withstand thermal shock cracking due to their high resistance to sudden temperature changes.

Q:Are insulating fire bricks safe to use?: When used correctly and according to the manufacturer's instructions, insulating fire bricks are generally safe to use. These bricks are specifically designed to endure high temperatures and provide exceptional insulation, making them perfect for applications like lining kilns, furnaces, and fireplaces. Made from lightweight materials like alumina, silica, and other refractory materials, insulating fire bricks aim to minimize heat transfer, thus preventing the escape of heat from the enclosed area. This not only enhances the system's energy efficiency but also reduces the risk of overheating and potential fires, improving safety. To ensure the safe use of insulating fire bricks, it is crucial to install them properly and securely. This involves providing sufficient support and reinforcement to prevent collapse or shifting of the bricks. Additionally, it is essential to use suitable mortar or refractory cement to firmly join the bricks together, creating a sturdy and stable structure. While insulating fire bricks themselves are generally safe, it is important to note that they may contain small amounts of trace elements or materials that can be harmful if released into the environment. Therefore, it is advisable to follow the manufacturer's safety guidelines, which may include wearing protective gloves, goggles, and a dust mask when handling the bricks. In conclusion, insulating fire bricks are a safe and dependable choice for insulation in high-temperature applications. Nevertheless, it is crucial to take necessary precautions during installation and adhere to safety guidelines to ensure their proper and safe use.

Q:Are insulating fire bricks suitable for use in cement plants?: Yes, insulating fire bricks are suitable for use in cement plants. Insulating fire bricks are made from lightweight refractory materials that are designed to resist high temperatures and thermal shock. These bricks have low thermal conductivity, which means they can effectively insulate against heat transfer. In cement plants, where high temperatures are generated during the production process, insulating fire bricks can be used in various applications. They can be used to line the kiln, where the raw materials are heated to extreme temperatures to produce cement clinker. The insulating properties of these bricks help to reduce heat loss and improve energy efficiency in the kiln. Additionally, insulating fire bricks can be used to line the preheater tower and other high-temperature areas in the cement plant. These bricks provide insulation and protection against the intense heat, helping to prolong the lifespan of the equipment and reduce maintenance costs. Furthermore, the lightweight nature of insulating fire bricks makes them easier to handle and install compared to traditional refractory bricks. This can save time and labor during the construction or repair of cement plant equipment. Overall, insulating fire bricks are a suitable choice for use in cement plants due to their high-temperature resistance, low thermal conductivity, and ease of installation. They can contribute to improved energy efficiency, equipment durability, and cost savings in cement plant operations.

Q:Can insulating fire bricks be used in the construction of glass melting furnaces?: Yes, insulating fire bricks can be used in the construction of glass melting furnaces. These bricks are designed to withstand high temperatures and provide excellent insulation, making them suitable for use in the extreme heat of glass melting processes. Their low thermal conductivity helps to retain heat within the furnace, improving energy efficiency and maintaining a stable melting environment.

Q:Can insulating fire bricks be used in the construction of crucibles?: Insulating fire bricks can indeed be utilized for constructing crucibles. These bricks are crafted from lightweight materials like clay and silica, boasting remarkable thermal insulation properties. Consequently, they are highly suitable for scenarios that require the preservation of high temperatures and minimal heat loss, such as crucible construction. Crucibles, extensively employed in industries like metallurgy and chemistry, serve the purpose of containing and melting materials at exceedingly elevated temperatures. By incorporating insulating fire bricks into crucible construction, heat loss is curtailed, energy efficiency is enhanced, and a more consistent temperature is maintained within the crucible, ultimately resulting in improved overall performance. Furthermore, the lightweight nature of these fire bricks facilitates easier handling and installation, further augmenting their appropriateness for crucible construction.

Q:Are insulating fire bricks suitable for use in incinerators?: Indeed, insulating fire bricks are well-suited for utilization in incinerators. Tailored specifically to endure elevated temperatures and offer exceptional insulation qualities, these bricks prove to be ideal for incinerators. They exhibit remarkable resistance to thermal shock, ensuring their structural integrity remains intact even under extreme heat exposure. Moreover, these bricks possess low thermal conductivity, which aids in diminishing heat loss and enhancing the overall energy efficiency of the incinerator. The combination of their heat endurance and insulation effectiveness renders them a dependable option for incinerator utilization.

Q:Can insulating fire bricks be used in industrial furnaces?: Yes, insulating fire bricks can be used in industrial furnaces. Insulating fire bricks are designed to withstand high temperatures and provide excellent insulation, making them suitable for use in various types of industrial furnaces.

Q:Are insulating fire bricks resistant to warping?: Yes, insulating fire bricks are generally resistant to warping. Insulating fire bricks are designed to withstand high temperatures and thermal shocks, which helps prevent warping. These bricks are made from lightweight materials such as clay, silica, and alumina, combined with additives to enhance their insulating properties. These additives also contribute to the brick's ability to resist warping. Additionally, insulating fire bricks undergo a specific manufacturing process that helps ensure dimensional stability and minimize the risk of warping. However, it's important to note that extreme and prolonged exposure to high temperatures can still cause some degree of warping, but compared to other types of bricks, insulating fire bricks offer a higher level of resistance.

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