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Alumina-silicon Refractory Bricks

Low Porosity Fire Clay Brick

Low porosity, dense and firm structure, good thermal stability, erosion resistant. Used in glass melting furnaces, metallurgical linings, cement kiln pre heaters, chemical reactors, heat exchange equipment, power boiler linings.

Al₂O₃:≥45%
Apparent Porosity:≤15%
Cold Crushing Strength:≥50MPa
Load-softening Temperature at 0.2MPa, T0.6:≥1450℃
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Low Porosity Fire Clay Brick
Description
Technical Data
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Description of Low Porosity Fire Clay Brick

Low Porosity Fire Clay Brick are made from high - quality clay and pyrophyllite through high-pressure molding and high-temperature sintering. They are refractory materials with low porosity and high strength, suitable for harsh high - temperature environments.

Common Specifications: Standard brick size is 230mm × 114mm × 65mm. Custom - made special - shaped bricks (wedge - shaped/arc - shaped bricks) are available.

Features and Properties

  1. Physical Properties: Bulk density is 2.0 - 2.2 g/cm³, and the low porosity (≤ 15%) reduces penetration.
  2. Mechanical Properties: Compressive strength at normal temperature is 50 - 60 MPa, with strong resistance to mechanical stress.
  3. Thermal Properties: Refractoriness ranges from 1400 - 1600 °C, with excellent thermal stability.
  4. Chemical Properties: Resistant to the erosion of acidic/neutral slag, ensuring a long service life.

Technical Data of Low Porosity Fire Clay Brick

Index Items DN - 12 DN - 15
Al₂O₃ /% ≥ 45 ≥ 45
Fe₂O₃ /% ≤ 1.2 ≤ 1.5
Apparent Porosity /% ≤ 12 ≤ 15
Compressive Strength at Normal Temperature /MPa ≥ 60 ≥ 50
Softening Temperature under Load 0.2MPa, T0.6 /℃ ≥ 1470 ≥ 1450

Applications of Low Porosity Fire Clay Brick

  1. Glass Industry: Used for kiln walls, kiln bottoms, and regenerators.
  2. Metallurgical Industry: Applied to the linings of blast furnaces and converters.
  3. Cement/Chemical/Power Industries: Used in pre - heaters, reactors, and boiler linings.

Case of Low Porosity Fire Clay Brick

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Product Range:
High/mid-grade sintered zirconia, corundum, AZS bricks,lightweight insulation bricks, and unshaped refractories with annual output value exceeding 500 million RMB.
Production Capacity:
4 automated batching systems
4 high/ultra-high temperature tunnel kilns + 5 shuttle kilns
30 CNC presses (400-1500T capacity)
Digitalized workshops producing 150,000 tons/year
93 patents, including the industry-first Triple-ResistantBrick (Patent ZL201310431067.6) for glass furnaces,excelling in erosion/thermal shock resistance.
Co-drafted industry standards forandalustie/chrome-corundum/zircon bricks withChina Building Materials Academy.
Strategic partners: Baowu Group, CNBM, CSG Holding. Xinyi Glass, Kibing Group.
Led by Prof Shi Gan (renowned refractory expert), our 40+ R&D professionals drive innovation in green material technology
Prof. Shi Gan
Chief Scientist & R&D Director, XZK Group
China's highest technical for industrial R&D leadership.
Key participant in drafting 5+ national industry standards.
Principal inventor of the Triple-Resistant Brick, resolving critical glass furnace longevity challenges.
Zhengzhou Zhongke Refractories Co.
Lightweight insulation materials (alumina bubble bricks, mullite bricks)
Zhengzhou Zhongke New Materials Co.
High-temperature specialties (chrome-zirconia corundum bricks, triple-resistant bricks)
Zhengzhou Hengruida Materials Co.
Premium zirconia-series refractories
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