Insulating Fire Brick for Steel, Cement, and Glass Industries

Insulating Fire Brick for Steel, Cement, and Glass Industries System 1

Insulating Fire Brick for Steel, Cement, and Glass Industries

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Loading Port:: Tianjin

Payment Terms:: TT OR LC

Min Order Qty:: 30 m.t.

Supply Capability:: 10000 m.t./month

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CNBM conforms strictly to the requirements of ISO 9000 quality control system during the production. MSDS is also available if you want. The thermal insulation fire clay brick meet with the requirements of ASTM & JIS standards. So pls stay cool with our quality.

Brief discription for Alumina Fire Brick

CNBM Alumina Fire Brick are classified according to alumina content ranging from 48% to 90%.

CNBM Alumina Fire Brick are commonly used in blast furnace, hot blast furnace, the roof of electric furnace, teeming ladle, rotary kiln, regenerator, etc.

Brief features for Alumina Fire Brick

◆Low thermal conductivity

◆Excellent acid and base slagging resistance

◆High refractoriness

◆Excellent thermal shock resistance

◆Excellent mechanical strength

◆Good spalling resistance and wear resistance.

◆Good corrosion resistance.

◆High-temperature creep rate is quite low.

◆Good volume stability at high temperature.

◆Low bulk density, low thermal conductivity, good thermal insulation performance.

Technical data for high aluminia bricks

ITEM	UAL48	UAL55	UAL65	UAL75	UAL80	UAL85	ALP80
Refractoriness, ℃	1750	1770	1790	1790	1810	1810	1810
Apparent Porosity,%	22	22	23	23	20	20	18
C.C.S, Mpa	39	44	49	53	55	60	100
Refractories Under Load (0.2Mpa)，℃	1420	1470	1500	1520	1500	1520	1550
Reheating Linear Change,%	1450℃x2h 0.1～-0.4	1500℃x2h 0.1～-0.4	1500℃x2h 0.1～-0.4	1500℃x2h 0.1～-0.4	1550℃x2h -0.5～+0.5	1550℃x2h -0.5～+0.5	1550℃x2h -0.5～+0.5
Al₂O₃ Content , %	48	55	65	75	80	85	82

Why us

Professional fire brick manufacturer. We have being specialized in producing refractory fireclay brick for more than 40 years so that we can guarantee a stable quality.

Guaranteed quality. Our production process conforms strictly to the requirements of ISO9000 quality management system. Quality inspection is carried out in every links of our production. SGS third party inspection is available.

Sound after sales service. We provide sound after sales service. We provide 24 hours’ consultation service. We are ready to answer your consultations at any time.

Q: Is it necessary to abolish the technical regulations for the construction of self thermal insulation masonry building with sludge sintering insulation bricks?: Silt sintering brick insulation brick is made from river mud, city sludge, mud as the main raw materials, added according to a certain proportion of siliceous inorganic binder after aging, extrusion blank, blank by cutting, drying, sintering and extrusion molding machine. The utility model has the advantages of energy saving, resource saving, favorable for developing circular economy and comprehensive utilization of resources, high micropore rate, good product heat insulation performance and heat insulation performance, etc..

Q: Can insulating fire bricks be cut or shaped using common tools?: Indeed, common tools can be utilized to cut or mold insulating fire bricks. These bricks are typically composed of lightweight refractory substances like clay and minerals, making them more amenable to cutting and shaping than conventional fire bricks. To achieve the desired dimensions and design, one can employ basic tools such as a handsaw, angle grinder, or even a chisel and hammer. However, it is crucial to prioritize safety when handling insulating fire bricks by donning protective gear like gloves, goggles, and a dust mask. This precautionary measure is necessary to avert any potential health risks.

Q: Can insulating fire bricks be used in drying ovens?: Yes, insulating fire bricks can be used in drying ovens. These bricks are designed to withstand high temperatures and provide insulation, making them suitable for use in ovens where drying processes occur. They help to maintain a consistent and efficient heat distribution, ensuring effective drying of the materials inside the oven.

Q: Can insulating fire bricks be used in the construction of combustion chambers?: The use of insulating fire bricks in combustion chambers is highly recommended. These bricks are created using lightweight, porous materials that possess exceptional thermal insulation capabilities. As a result, they are extremely suitable for high-temperature applications like combustion chambers, where their insulation aids in the containment and regulation of heat generated during the combustion process. The heat transfer resistance of insulating fire bricks is notably high, enabling them to effectively retain heat within the combustion chamber. This, in turn, enhances combustion process efficiency by minimizing heat loss to the surrounding environment. Moreover, these bricks' insulating properties help prevent the outer walls of the combustion chamber from overheating, thereby reducing the risk of structural damage. Furthermore, insulating fire bricks are specifically designed to endure elevated temperatures, rendering them highly durable and resilient. This is particularly crucial in combustion chambers, where intense heat and varying temperatures are commonplace. Their ability to withstand thermal shock and thermal cycling makes them a dependable choice for this purpose. To summarize, insulating fire bricks are an exceptional option for constructing combustion chambers due to their thermal insulation properties, heat retention ability, and resistance to high temperatures. They significantly contribute to the overall efficiency and safety of the combustion process, making them an invaluable component in combustion chamber construction.

Q: Are insulating fire bricks resistant to salt attack?: Insulating fire bricks do not typically possess resistance against salt attack, which refers to the deterioration and corrosion of materials caused by salt or saltwater exposure. Although insulating fire bricks are engineered to have exceptional thermal insulation properties, they are not specifically formulated to endure the damaging effects of salt. Salt attack has the potential to weaken the structure of the bricks, leading to a decrease in their performance and durability over time. If these bricks are consistently exposed to salt or saltwater, it is probable that their degradation will be hastened, making them unreliable for long-term use in such environments. To ensure resilience against salt attack, it is advised to utilize refractory materials specially designed for this purpose, such as salt-resistant fire bricks or refractories with a higher alumina content. These materials have been developed to withstand the corrosive impacts of salt and are better suited for applications where exposure to salt or saltwater is anticipated.

Q: Are insulating fire bricks suitable for insulation in cryogenic applications?: Insulating fire bricks are indeed appropriate for insulation in cryogenic applications. These bricks are crafted from lightweight refractory materials that possess exceptional thermal insulation qualities. With their low thermal conductivity, high melting points, and ability to withstand extremely frigid temperatures, they are perfectly suited for cryogenic applications. Cryogenic applications entail the handling and storage of materials at exceedingly low temperatures, typically below -150 degrees Celsius (-238 degrees Fahrenheit). Insulating fire bricks are specifically designed to provide efficient insulation in such extreme conditions, effectively preventing heat transfer and maintaining the desired low temperature. Moreover, insulating fire bricks exhibit chemical stability and possess excellent resistance to thermal shock. This means they can endure rapid temperature fluctuations without cracking or deteriorating, which is particularly crucial in cryogenic applications where such variations are commonplace. In addition to their exceptional thermal insulation qualities, insulating fire bricks are lightweight and easy to handle, making them convenient for installation in cryogenic systems. All in all, insulating fire bricks are a suitable choice for insulation in cryogenic applications due to their thermal insulation properties, resistance to high temperatures, chemical stability, and ability to withstand thermal shock.

Q: How does an insulating fire brick work?: Insulating fire bricks, also known as refractory bricks, are specially designed to withstand high temperatures and serve as thermal barriers in various industrial applications. These bricks are made from refractory materials that have low thermal conductivity, meaning they are poor conductors of heat. The primary mechanism by which insulating fire bricks work is through their ability to trap and slow down the transfer of heat. Unlike regular bricks or concrete, insulating fire bricks contain a high percentage of air pockets within their structure, which act as insulators. These air pockets help to prevent the transfer of heat by effectively blocking the movement of thermal energy. When exposed to high temperatures, insulating fire bricks absorb minimal heat due to their low thermal conductivity. Instead of conducting heat through the brick, the energy is reflected or absorbed by the air pockets within the brick's structure. This prevents heat from transferring to the other side of the brick, effectively creating a thermal barrier. Furthermore, the refractory materials used in insulating fire bricks are inherently resistant to thermal shock and can withstand rapid temperature changes without cracking or breaking. This makes them ideal for applications where extreme temperature variations are common. Insulating fire bricks are widely used in industries such as metallurgy, ceramics, glass manufacturing, and kiln construction, where they are used to line furnaces, kilns, and other high-temperature equipment. By effectively reducing heat transfer, these bricks help to improve energy efficiency, reduce heat loss, and protect surrounding materials and structures from the intense heat. In summary, the working principle of an insulating fire brick lies in its ability to minimize heat transfer through its low thermal conductivity and air pocket structure. By creating a thermal barrier, these bricks play a crucial role in providing insulation, protecting against heat loss, and ensuring the efficient operation of high-temperature processes.

Q: Are insulating fire bricks resistant to hydrofluoric acid?: Hydrofluoric acid is a highly corrosive substance capable of attacking and dissolving various materials, including fire bricks, which lack resistance to it. Therefore, it is crucial to exercise utmost caution and employ suitable protective gear while dealing with this hazardous substance.

Q: Are insulating fire bricks resistant to flame spread?: Yes, insulating fire bricks are resistant to flame spread.

Q: Can insulating fire bricks be used for insulation in heat treatment furnaces?: Yes, insulating fire bricks can be used for insulation in heat treatment furnaces. Insulating fire bricks are specifically designed to withstand high temperatures and provide excellent thermal insulation. They have low thermal conductivity and can effectively retain heat within the furnace. Additionally, their lightweight nature makes them easy to handle and install. Insulating fire bricks are commonly used in various heat treatment applications, such as annealing, tempering, and hardening processes, to ensure optimal heat retention and energy efficiency in the furnace.

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