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An Overview Of The Major Types Of Lightweight Insulating Brick

Views: 241 Author: Site Editor Publish Time: 2020-09-10 Origin: Site

An important product for energy saving and environmental protection in industrial furnaces is the lightweight insulating bricks.


Lightweight insulating bricks are a type of refractory brick with thermal insulating features and visible porous structure.


Its properties include energy saving, low bulk density, easy construction, and low thermal conductivity. The working temperature is about 900 – 2000oC.


Talking about the types of lightweight insulating bricks, they can be classified according to different structures of raw materials such as the lightweight clay brick, lightweight alumina brick, etc.


Therefore, with diverse lightweight insulating bricks sale of various materials, you get to choose the right bricks that suit your need.


Types of Lightweight Insulating Bricks

There are different kinds of lightweight insulating bricks, they are:


Ø Alumina Hollow Ball Brick

Alumina powder, hollow spheres, and other binders are the raw materials used in making this type of brick.


It is a type of insulating brick with an extremely high-temperature material and a good energy-saving insulation effect.


It has a low reheating change rate, high longevity, and effective thermal stability features.


Alumina hollow ball bricks are stable in all kinds of atmosphere and can be used for super high-temperature furnaces at about 1800oC.


Due to these properties and the physical and chemical indicators, alumina hollow ball bricks are commonly used in carbon black industrial reactors.


Other applications are in petrochemical industrial gasifier, electric furnaces, and other ultra-high-temperature furnaces for thermal insulation.

 lightweight insulating bricks

Ø Lightweight clay brick

Produced with the firing method, lightweight clay bricks are used in heat insulation of industrial furnaces in compliance with their characteristics.


Such characteristics include reduction of heat loss in the kiln or furnace, low energy consumption, etc.


Good performance and low price makes lightweight clay bricks usable in regions with no strong high-temperature melting material erosion and scouring.


The maximum use temperature of lightweight clay brick is about 1200-1400oC.


Ø Magnesian Lightweight Insulating Brick

It has an effective heat resistant property with a high service temperature of 1600-1800oC.


Ø Diatomite Lightweight Insulating Brick

Produced with natural permeable raw materials, diatomite brick has a good thermal insulation feature and a low thermal conductivity. Its temperature is less than 1100oC.


Ø Lightweight Insulating Mullite Brick

This type of brick can contact the flame directly because the maximum temperature is 1300-1500oC but the refractoriness can reach 1790oC above.


Lightweight insulating mullite brick has a lot of properties such as energy-saving effect, high lightness, high-temperature resistance, good spalling resistance, low thermal conductivity, etc.


Due to its properties, physical and chemical indicators, mullite bricks can be used in ceramic roller kiln, electric furnace lining, cracking furnaces, glassware, hot air furnaces, etc.


Ø Silicon Carbide Lightweight Insulating Brick

It has good features such as effective cracking resistance and erosion resistance, a high-temperature strength. Its maximum use temperature is about 1300oC.


Ø Zircon Lightweight Insulating Brick

Produced with foam method, zircon brick has excellent features such as effective thermal shock resistance, low thermal expansion coefficient, a high index of refraction, high melting point, etc.


Zircon lightweight insulating brick can also be used in ultra-high temperature furnaces.


Ø Lightweight Silica Bricks

Has an effective thermal stability property, and its working temperature is between 1220-1550oC.


Ø Lightweight Corundum Brick

This type of brick is made of corundum and it contains Aluminum oxide (AL2O3). It has a maximum temperature of about 1600-1800oC.


Other Types of Lightweight Insulating Bricks

Below are the other types of lightweight insulating brick:

Expanded Perlite Brick

Zirconia Bubble Brick

Alumina Bubble Brick

Calciclase Lightweight Insulating Brick

Poly Light High Aluminum Insulating Brick



Lightweight insulating brick is mainly designed for high-temperature resistance which is frequently used in lining kiln, furnaces, etc.


Due to its properties, we realized that those with service temperatures lower than 1000oC are diatomite brick, expanded perlite brick, etc. They are mostly used for the thermal insulating layer of heating equipment.


The service temperature between 1000 – 1500oC is lightweight insulating mullite bricks, lightweight insulating clay bricks, lightweight silica bricks, etc.


While the high temperature insulating brick which has a service temperature of 1500oC and above can come in contact with fire and they include Alumina hollow ball brick, Magnesian lightweight insulating brick, etc.


Looking for an insulating brick that suits your need without compromising? Contact a professional manufacturer who specializes in lightweight insulating bricks sale and be assured of getting the best product.


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