High-Aluminum Low-Iron Insulating Fire Brick

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Specifications

High aluminum refractory brick belongs to gender refractory materials with its thermal stability.

Feature:

1.bricks are made from high quality bauxite
2.dry pressed
3.burned under tunnel kiln
4.accurate dimension
5.high strength

Product specification: Can be used in various kilns because of its cheapness and general tray package. Among all of the refractory materials, it is the mostly used in the key positions.Molding method: it has down draft kiln and tunnel kiln and the general sintering temperature is 1360-1480 degrees. It is a kind of aluminosilicate refractory product which aluminum oxide (Al2O3) content is higher than 48%.

Item		Properties
Item		LZ-80	LZ-75	LZ-65	LZ-55	LZ-48
Al₂O₃ ,%		80	≥75	≥65	≥55	≥48
Refractoriness °C		≥1790	≥1790	≥1790	≥1770	≥1750
Bulk density,g/cm³		2.65	2.5	2.45	2.4	2.3
Softening temperature under load		1530	≥1520	≥1500	≥1470	≥1420
Permanent linear change,%	1500°CX2H	+0.1 -0.4	+0.1 -0.4	+0.1 -0.4	+0.1 -0.4
Permanent linear change,%	1450°CX2H					+0.1 -0.4
Apparent porosity,%		22	≤23	≤23	≤22	≤22
Cold Crushing strength Mpa		55	≥50	≥45	≥40	≥35
Application		All industrial furnace

Q: Can insulating fire bricks be cut to custom sizes?: Indeed, custom sizes can be achieved when cutting insulating fire bricks. These bricks are commonly crafted from lightweight materials like ceramic fibers or lightweight aggregates, facilitating their relative ease of cutting. A range of tools, including saws, knives, and specialized cutting equipment, can be utilized to achieve this. However, it is crucial to prioritize proper safety measures and employ suitable tools and techniques to attain a precise and flawless cut. Furthermore, consulting the manufacturer's instructions or seeking expert guidance is recommended to ensure that the cutting procedure does not compromise the structural integrity or thermal characteristics of the insulating fire bricks.

Q: Can insulating fire bricks be used as a heat shield?: Yes, insulating fire bricks can be used as a heat shield. They have excellent thermal insulation properties and can withstand high temperatures, making them an ideal choice for protecting against heat radiation and transferring minimal heat to the surrounding areas.

Q: Are insulating fire bricks lightweight or heavy?: Insulating fire bricks are lightweight. These bricks are specifically designed to have low density and high insulating properties. They are made from lightweight materials such as expanded clay, perlite, and vermiculite, which contribute to their lightweight nature. This makes them easier to handle and install compared to traditional heavy fire bricks. However, despite being lightweight, insulating fire bricks still offer excellent thermal insulation, making them ideal for various applications including kilns, furnaces, and fireplaces.

Q: Can insulating fire bricks be used in the construction of refractory linings?: Yes, insulating fire bricks can be used in the construction of refractory linings. Insulating fire bricks are specifically designed to have excellent thermal insulation properties, making them ideal for applications where high temperatures need to be contained. They are commonly used in the construction of furnaces, kilns, and other high-temperature environments. The insulating properties of these bricks help to reduce heat loss, improve energy efficiency, and maintain a stable temperature within the refractory lining. Additionally, insulating fire bricks are lightweight and easy to handle, making them a practical choice for refractory lining construction.

Q: Are insulating fire bricks fire-rated?: Indeed, insulating fire bricks possess fire-rating. They are purposefully crafted to endure elevated temperatures and furnish superior thermal insulation in diverse applications. Fashioned from a distinct ceramic material with minimal thermal conductivity, these bricks possess the capability to retain heat and impede its transmission to the surroundings. Such attribute endows them with remarkable fire resistance, thereby safeguarding the structures they are employed in. Commonly employed within furnaces, kilns, fireplaces, and other environments characterized by high temperatures, insulating fire bricks play a pivotal role in ensuring fire protection.

Q: Several kinds of energy-saving bricks: Energy saving thermal insulation brick is a new type of energy-saving building insulation technology with inorganic composite materials as the main material. It is an ideal technology to replace the traditional wall insulation.

Q: Can insulating fire bricks be used in the construction of autoclaves?: Insulating fire bricks are indeed applicable for the construction of autoclaves. Autoclaves necessitate materials capable of enduring high temperatures and pressures, and insulating fire bricks are specifically engineered to exhibit exceptional thermal resistance and insulation characteristics. These bricks consist of refractory materials such as alumina, silica, and other additives that enable them to withstand extreme temperatures and thermal shocks. Furthermore, they possess a lightweight composition and low thermal conductivity, thereby reducing heat loss and enhancing energy efficiency within autoclaves. Moreover, insulating fire bricks are endowed with a commendable load-bearing capacity, rendering them suitable for the structural elements of autoclaves. In summary, the utilization of insulating fire bricks during the construction of autoclaves serves to guarantee the safety and effectiveness of the equipment.

Q: Are insulating fire bricks suitable for use in the construction of incinerators?: Yes, insulating fire bricks are suitable for use in the construction of incinerators. Insulating fire bricks have excellent thermal insulation properties, allowing them to withstand high temperatures and efficiently retain heat. This makes them ideal for lining the walls and floors of incinerators, as they help to contain and direct heat, ensuring proper combustion while reducing heat loss. Additionally, insulating fire bricks are resistant to chemical attacks and can withstand the corrosive environment found in incinerators, making them a reliable choice for this application.

Q: Are insulating fire bricks resistant to gas permeation?: Yes, insulating fire bricks are generally resistant to gas permeation. These bricks are specifically designed to have low porosity, which means they have a minimal amount of open spaces for gases to pass through. This characteristic makes them highly effective at preventing the permeation of gases. Additionally, insulating fire bricks are often made from materials such as alumina, which have excellent resistance to high temperatures and chemical reactions, further enhancing their resistance to gas permeation. Overall, insulating fire bricks are a reliable choice for applications where gas permeation needs to be minimized or prevented.

Q: Are insulating fire bricks resistant to alkali vapor attack?: Yes, insulating fire bricks are generally resistant to alkali vapor attack. These bricks are made using high-quality refractory materials, such as fire clay or silica, which have excellent resistance to chemical attacks, including alkali vapor. They are designed to withstand high temperatures and harsh environments, making them suitable for applications where alkali vapor may be present, such as in industrial furnaces, kilns, and incinerators. However, the exact resistance may vary depending on the specific composition and manufacturing process of the insulating fire bricks. It is always recommended to consult the manufacturer's specifications or seek expert advice to ensure their compatibility with alkali vapor exposure.

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