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Corundum Brick

Corundum Brick

Sintered Corundum Brick, commonly referred to as corundum brick, is a high-quality refractory material with exceptional thermal and chemical resistance properties. This type of brick is composed mainly of alumina (Al2O3) and is produced through a high-temperature sintering process, which results in a dense and durable structure.

Corundum Brick

One of the key features of Sintered Corundum Bricks is their ability to maintain their mechanical strength and integrity even under intense thermal cycling and exposure to aggressive chemicals. This exceptional durability allows them to endure the severe thermal shocks and corrosive atmospheres often encountered in industrial processes.

In summary, Sintered Corundum Bricks stand as a testament to modern refractory technology, offering reliable protection and insulation in some of the most demanding industrial environments. Their outstanding performance characteristics make them an indispensable choice for ensuring the longevity and efficiency of critical high-temperature applications.

Sintered Corundum Brick for Sale

Sintered Corundum Bricks are widely used in various industrial applications where extreme heat, abrasion, and corrosion resistance are required. They find extensive use in industries such as metallurgy, petrochemical, cement, and glass manufacturing. Due to their high melting point and resistance to chemical reactions, these bricks are ideal for lining high-temperature furnaces, kilns, reactors, and other equipment where harsh operating conditions prevail.

High Chrome Bricks

High chrome brick finds its application in areas characterized by severe corrosion and elevated thermal stress within reinforcing fiberglass furnaces and E-glass furnaces. These areas include the throat and sidewalls of melting tanks, as well as the clarifying basin. It is particularly used in the bottom paving, especially around the bubbler, forehearth, doghouse, corner block, feeder channel, channel loop, bushing blocks, and backup blocks.

Moreover, high chrome brick is suitable for deployment in critical sections like throats, dams, and high-wear zones across various types of glass furnaces, including those used for manufacturing clear soda-lime glass. Its resilience to both corrosive agents and thermal extremes positions it as a crucial component for ensuring the durability and efficiency of these demanding industrial processes.

Cr2O3 %94929080
TiO2 %3.83.84
Apparent Porosity %≤16≤20≤20≤20
Bulk Density g/cm3≥4.33≥4.05≥4.1≥4.00
Cold Crushing Strength Mpa≥200≥100≥100≥100
0.2Mpa Refractoriness Under Load T0.6 ℃≥1700≥1680≥1680≥1670
Fused Corundum Brick

Fused corundum brick is crafted from a blend of industrial alumina and quartz powder. This composite is subjected to the intense heat of an arc furnace, where it undergoes a melting process. Subsequently, the molten material is cast into molds, followed by annealing and final mechanical refinement. These steps culminate in the creation of fused corundum bricks, precisely molded into the desired shapes and dimensions.

ItemFused Cast AluminaFused Cast AluminaFused Cast Alumina
α-β Alumina RS-Mα-Alumina RS-Aβ-Alumina  RS-H
Chemical CompositionAl2O39498.593
Other oxides10.20.5
Analysis %
Vitreous Phase161
Corundum Mullite Brick

The primary constituents of corundum mullite bricks include imported tabular corundum and high-purity fused corundum. Employing advanced techniques that involve the addition of superfine powders, the manufacturing process involves mixing the materials, followed by drying, shaping, and ultimately subjecting them to high-temperature firing within a shuttle kiln.

ItemHigh Pure and High Quality
Fused Corundum Fire Brick
Sintered Corundum Fire BrickMullite-Corundum
Fire Brick
Al2O3 %≥99≥90≥80
SiO2 %≤0.2≤8≤18
Fe2O3 %≤0.2≤0.2≤0.3
Bulk Density g/cm3≥3.2≥3≥2.8
Apparent porosity %≤19≤18≤18
Cold compressive strength MPa≥100≥100≥100
Chrome Corundum Brick

Chrome corundum Bricks is produced with high quality of sintered corundum, synthetic mullite and chromium oxide as raw material and processed under high temperature and high pressure. They have high bulk density, high compressive strength, good thermal shock resistance, good corrosion resistance to acid and alkali. The bricks are not affected by H2, CO gase.

The parameter of Chrome corundum brick
ItemChrome-Corundum BrickChrome-Corundum BrickChrome-Corundum Brick
Bulk density,g/cm33.633.533.3
Cold Crushing strength MPa130130120
Refractoriness under Load (0.2MPa ℃)170017001700
Permanent Linear Change(%) 1600°C×3h±0.2±0.2±0.2
Apparent porosity %1416 18
ApplicationHigh temperature industrial furnaces   
High temperature industrial furnaces
AZS Bricks

AZS Brick is a kind of fused cast zirconia-corundum refractory brick which is short writing of abbreviation that AZS from “A” of Al2O3, “Z” of ZrO2 and “S” of SiO2. Such as No. 33 fused cast zirconia-corundum refractory brick adopts the “AZS-33#” as its abbreviation, No. 36 fused cast zirconia-corundum refractory brick adopts the “AZS-36#” as its abbreviation and No. 41 fused cast zirconia-corundum refractory brick adopts the “AZS-41#” as its abbreviation.

Chemical compositionAZS-33AZS-36AZS-41
Al2O3a littlea littlea little
Physical Properties 
Bulk density(g/cm3):3.5-3.63.753.9
Cold crushing Mpa350350350
Thermal expansion coefficient (1000°C)
Exudation temp. of glass phase140014001400
Corrocion resistance  of glass melt(mm/24h)
DensityPT   QX3.43.453.55

Applications of High Alumina Refractory Bricks

Sintered Corundum Bricks are suitable for a variety of fields and industries due to their exceptional thermal and chemical resistance properties. Some of the primary fields where these bricks find applications include:

  • Metallurgy: Sintered Corundum Bricks are used to line furnaces, ladles, and other equipment in the metallurgical industry. They can withstand the high temperatures and harsh conditions encountered in processes like smelting, refining, and alloy production.
  • Petrochemical: In the petrochemical industry, these bricks are used to line reactors, furnaces, and kilns where various chemical processes take place at elevated temperatures. Their resistance to corrosive gases and liquids makes them suitable for handling aggressive chemical environments.
  • Cement Industry: Sintered Corundum Bricks are used in cement kilns and other high-temperature equipment in the cement manufacturing process. Their ability to withstand extreme heat and chemical exposure is crucial in maintaining the efficiency of cement production.
  • Glass Furnace: Glass manufacturing involves high-temperature processes, and these bricks are used to line glass melting furnaces and other equipment. Their ability to resist thermal shock and corrosive molten glass makes them essential for this industry.
  • Steel Industry: Sintered Corundum Bricks are used in steelmaking processes, particularly in the production of specialty steels. They provide the required refractory lining for equipment like electric arc furnaces, which operate at extremely high temperatures.
  • Ceramics Industry: In the ceramics industry, these bricks are used to line kilns and other high-temperature equipment for firing ceramics and porcelain. Their stability at high temperatures ensures consistent and controlled firing processes.
  • Power Generation: Sintered Corundum Bricks can be employed in various components of power generation facilities, such as boiler linings and thermal insulation materials. Their resistance to thermal cycling and high temperatures makes them valuable in this field.
  • Chemical Industry: These bricks are used to line chemical reactors and high-temperature vessels in chemical manufacturing processes. Their resistance to corrosive chemicals and elevated temperatures ensures the longevity of equipment.
  • Incineration and Waste Treatment: In facilities that deal with waste incineration and hazardous waste treatment, Sintered Corundum Bricks are utilized to line furnaces and reactors where high temperatures are required to break down waste materials.
  • In essence, Sintered Corundum Bricks are suitable for any industry or application that involves high temperatures, thermal cycling, corrosive environments, and the need for durable refractory materials to withstand these challenging conditions.
  • The versatility, durability, and high-temperature resistance of high alumina refractory bricks make them essential components in a wide range of industrial applications.
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