Low Thermal Conductivity High Temperature Refractory Lightweight Alumina Insulation Brick

• Customization: Available
• Classification: Clay
• Feature: Good Mechanical Strength, Good Thermal Insulation Performance, High-Temperature Resistant, Light Weight, Low Thermal Conductivity, Long Time Materials
• Model NO.: JUCOS
• Production Process: Extrusion Method
• Refractoriness (℃): 1580< Refractoriness< 1770
• Shape: Brick
• Type: Refractory Material
• Material: Alumina Block
• Cold Crushing Strength MPa: More Than 2.0
• Reheating Linear Change: 1350~1400
• Bulk Density(g/cm3): 0.6~1.2%g/cm3
• Thermal Conductivity (350°C)W/M.K: Less Than 0.30
• Raw Material: High Alumina Bauxite
• Transport Package: 230*114*65/75
• Specification: Customizable
• Trademark: Jucos
• Origin: China
• Production Capacity: 50000ton/Year
• Package Size: 110.00cm * 110.00cm * 100.00cm
• Package Gross Weight: 880.000kg

Product Description

 

Product Description

Lightweight Alumina Insulation Brick is a high-efficiency thermal insulation refractory brick made from high-purity alumina powder, mullite aggregate, and foaming/additive technologies.
It features low bulk density, low thermal conductivity, excellent thermal shock resistance, and good mechanical strength, making it suitable for kiln linings, backup insulation, furnace walls, and high-temperature industrial applications.

Compared with dense refractory bricks, lightweight alumina insulation brick significantly reduces furnace weight, lowers heat storage, and improves overall energy efficiency.

Features

• Low Thermal Conductivity
  Outstanding insulation performance reduces heat loss.

• Lightweight Structure
  Bulk density typically 0.6-1.0 g/cm³, easy for installation and furnace design.

• High Temperature Resistance
  Working temperature up to 1350-1400°C (custom grades available).

• Strong Thermal Shock Resistance
  Withstands frequent heating & cooling cycles without cracking.

• High Purity Alumina + Mullite Structure
  Provides stable performance in various furnace atmospheres.

• Accurate Dimensions & Smooth Surface
  Ensures tight installation and long service life.
   

  Applications

  Lightweight alumina insulation brick is widely used in:

  Industrial Furnaces & Kilns

• Heat treatment furnaces

• Ceramic kilns

• Glass furnaces back-up insulation

• Lime kiln and rotary kiln insulation

• Furnace roof and wall insulation

• Aluminum melting furnace back-up layers

• Steel ladle preheating furnaces

• Petrochemical & Power Industry

• Reformers

• Cracking furnaces

• Boilers and hot blast stoves

• Other High-Temperature Areas

• Hot face and back-up insulation

• Expansion joint filling

• High-temperature lining design

• Metallurgy & Foundry

  
  Advantages

  Excellent Thermal Insulation

  Reduces fuel consumption and increases furnace efficiency.

  Energy Saving & Cost Reduction

  Lower heat storage → faster heating & cooling cycles.

  Lightweight Design

  Reduces the load on furnace structure and simplifies installation.

  Chemical Stability

  Good resistance against oxidation, reducing gas corrosion, and weak acids.

  Dimensional Accuracy

  Maintains stable shape under working temperature.
  
  

Properties/Brand	LG-0.6	LG-0.8	LG-1.0
Bulk Density (g/cm3)	1.5	2.5	3.5
Permanent Linear Change(%)	(1250)-2~-1.0	(1400)-2~-1.0	(1450)-1~-0.5
Thermal Conductivity	0.25	0.32	0.45
Refractoriness Under Load(ºC)@0.1MPa	1150	1250	1350
Al2O3	48	50	52
Fe2O3	1	1.2	1.2
Maximum Service Temperature	1300	1350	1400

Q1 : How can you control your quality?
A1 : For each production processing, JUCOS have complete QC system for the chemical
       composition and Physical properties. After production, all the goods will be tested, and
       the quality certificate will be shipped along with goods.

Q2: Are you a manufacture or trader?
A2: We are truly a manufacturer, we not only can provide the high quality products with the
       best price, but also can offer the best pre-sale service and after-service.

Q3 : Do you provide free samples?
A3 : Of course, free samples are available.

Q4 : What is your lead time? 
A4 : It usually needs about 15- 20 days after receiving the PO.

Q5 : Can we visit your company?
A5 : Yes, for sure, you are welcome to visit JUCOS company and our products.
       Also, we can talk more about the technique details if you need.

Q6 : What is the warranty of your products?
A6 : Our products have at least 1 year warranty,if any quality problems,
    we will take responsibility of the cost of the shipment and the replacement.

Q7: What's the MOQ of trial order?
A7 : No limit, we can offer the best suggestions and solutions according to your condition.

Q8: Why choose us?
A8: We had been in this line for more than 25 years, we can not only provide you high
      quality products with competitive price, but also we can supply good technique service
      which can help you solve problems.

Q9 : What standards do you have?
A9 : Our products meet the standards, such as ASTM, ASME, AMS, DIN, JIS etc. 
       The third party testing is all available for us.