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30-55% Alumina Fire Clay Brick Insulation Low Thermal Conductivity
30-55% Alumina Fire Clay Brick Insulation Low Thermal Conductivity
30-55% Alumina Fire Clay Brick Insulation Low Thermal Conductivity
30-55% Alumina Fire Clay Brick Insulation Low Thermal Conductivity
30-55% Alumina Fire Clay Brick Insulation Low Thermal Conductivity
30-55% Alumina Fire Clay Brick Insulation Low Thermal Conductivity
30-55% Alumina Fire Clay Brick Insulation Low Thermal Conductivity
30-55% Alumina Fire Clay Brick Insulation Low Thermal Conductivity
Specifications
Brand Name :
Leadsun
Model Number :
Fire Clay Brick
Certification :
ISO CE
Place of Origin :
China
MOQ :
500 pcs
Price :
Negotiable
Payment Terms :
T/T,L/C,D/P,Western Union
Supply Ability :
10000 pallets/month
Delivery Time :
10 days
Packaging Details :
pallets
Material :
Castable, Alumina Block, Mullite, glass wool, bauxite
Shape :
Customizable
Application :
Insulation,Refractory
Size :
230*114*65mm 230*114*75mm
Refractoriness :
1300-1800C
Density :
2.1-2.7g/cm3
Package :
Pallet
Al2O3 :
35-80%
Description
Low Thermal Conductivity Fire Clay Brick 30-55% Alumina Insulation
Product Description

Leadsun Refractory's Low Thermal Conductivity Fire Clay Brick 30-55% Alumina Insulation is engineered for superior thermal management and durability in high-temperature applications. Manufactured from high-quality flint clay with 30-55% alumina content and characterized by low iron and alkali, these bricks provide exceptional resistance to thermal shock, abrasion, and chemical attack. They are the most cost-effective and widely used solution for various industrial kilns and furnaces, ensuring extended service life and reliable performance.

Item SK-30 SK-32 SK-34 SK-36
AL2O3 % (min) 30-35% 35-38% 38-42% 50-55%
Fe2O3% (max) 3 3 2.8 2.5
Refractoriness ≥1670°C ≥1690°C ≥1710°C ≥1750°C
Refractoriness under load, 0.2MPa, (°C) ≥1270 ≥1350 ≥1350 ≥1430
Apparent porosity (%) 20-24 20-24 19-23 18-22
Bulk density (g/cm³) 2.00-2.05 2.05-2.1 2.1-2.15 2.15-2.25
Cold crushing strength (MPa) ≥25 ≥30 ≥35 ≥45
Thermal expansion at 1000°C (%) ≤0.6 ≤0.55 ≤0.55 ≤0.4
Features:
  • Low thermal conductivity for improved energy efficiency
  • High cold crushing strength ensures durability under load
  • Good dimensional stability at elevated temperatures
  • Easy to install and shape as per requirement
  • Can be used in oxidizing or reducing atmospheres
Applications:
  • Carbon bake furnaces in the aluminum industry
  • Rotary cement kiln preheat zones and cyclones
  • Glass tank insulation and coke oven linings
  • Blast furnaces, reheating furnaces, and suspended roofs
  • Lime kilns, chimneys, and other high-temperature industrial environments

30-55% Alumina Fire Clay Brick Insulation Low Thermal Conductivity

30-55% Alumina Fire Clay Brick Insulation Low Thermal Conductivity

30-55% Alumina Fire Clay Brick Insulation Low Thermal Conductivity

Packaging & Delivery:
  • Standard wooden pallets or as per customer requirement
  • Moisture-proof wrapped for long-distance shipping
  • Delivery time: 15–20 days after order confirmation
Why Choose Our Fire Clay Bricks?

Our fire clay bricks are manufactured under strict quality control using selected raw materials to ensure consistent performance in extreme thermal conditions. With over a decade of experience in refractory solutions, we provide reliable products that enhance furnace life and reduce maintenance costs.

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30-55% Alumina Fire Clay Brick Insulation Low Thermal Conductivity

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Product Detail
Brand Name :
Leadsun
Model Number :
Fire Clay Brick
Certification :
ISO CE
Place of Origin :
China
MOQ :
500 pcs
Price :
Negotiable
Contact Supplier
30-55% Alumina Fire Clay Brick Insulation Low Thermal Conductivity
30-55% Alumina Fire Clay Brick Insulation Low Thermal Conductivity
30-55% Alumina Fire Clay Brick Insulation Low Thermal Conductivity
30-55% Alumina Fire Clay Brick Insulation Low Thermal Conductivity

Qingdao Leadsun Refractory Co., Ltd

Verified Supplier
1 Years
qingdao
Since 2014
Business Type :
Distributor/Wholesaler, Exporter, Trading Company, Seller
Main Products :
Ceramic Fiber Blanket, Fire Clay Brick, Insulation Refractory Bricks
Total Annual :
3000000-5000000
Employee Number :
5~20
Certification Level :
Verified Supplier
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