Insulating Castable

Insulating castable is the refractory castable with low bulk density, high porosity, and sound insulating performance in Rongsheng refractory materials manufacturer. Insulating castables is made of high-quality aggregate, super fine powder, and several additives. It is also called lightweight insulation castable which has a series of features such as lightweight, high refractory temperature, low thermal conductivity, low water absorption, ease for construction, and so on.

Insulating Castables Can Be Applied To Kilns To Save Energy
Light-Weight Insulating Castables Products

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For its good performance, lightweight insulation castable refractory is widely used in the industrial fields, such as metallurgy, machinery, electricity petroleum, and other industries. It can be used as the thermal insulating layer of the linings and heat equipment alike, which can lower the heat consumption of industrial kiln and decrease the weight of kiln lining.

Description of the Insulating Castable

Insulating castable is refractory with lightweight and high porosity. Insulating castable properties are mainly decided by its composition. Some lightweight refractory materials are added into this castable, therefore insulating castable refractory density is low, about 1.5 g/cm3. In addition, lightweight insulation castable material has a high cold crushing strength and thermal insulation. With good workability, strong cohesion, it can be easily constructed. Insulating castable has strong impermeability, which is easy for the forming of the dense and full seam and improves the airtightness, integrates of the inner wall of the chimney.

Insulating Castable Can Prevent Energy-Saving
Insulating Castable Manufactured by Rongsheng

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Lightweight insulation castable material can be used in petroleum, construction, steel industry, and other industries. It can be used on the lining of the kiln and furnace, as overall casting material on the upper cover, and also it can be cast into precast blocks used on the furnace door.

Types of Insulating Castable

According to refractory temperature, lightweight insulation castable refractory can be divided to be low temperature insulating castable, medium temperature insulating castable and high temperature insulating castable refractory. These insulating castables have different service temperatures, such as the first one is 600-900℃, the second is 900-1200℃, and the last one is over 1200℃.

Technical Parameters of Insulating Castable

Item RSQJ-0.5 RSQJ-0.8 RSQJ-1.0 RSQJ-1.1 RSQJ-1.3 RSQJ-1.5 RSQJ-1.8
Bulk Density g/cm3 0.5 0.8 1.0 1.1 1.3 1.5 1.8
Maximum Service Temperature 1150 1200 1250 1250 1300 1300 1350
Thermal Conductivity


350℃ 0.15 0.25 0.3 0.4 0.45 0.6 0.65
700℃ 0.2 0.30 0.4 0.45 0.5 0.7 0.75
Cold Crushing Strength


110℃×24h 1.5 2.0 4.0 5.5 10 15 20
1000℃×3h 1.5 2.0 5.5 6.5 15 20 30
Linear Dimensional Change -1.5 -1.0 -1.0 -0.5 -0.5 -0.5 -0.5
Installation Method Ramming or vibration, or spray
Use Rotary kiln and industrial kiln for heat insulation or single-layer lining

Advantages of Insulating Castable

  • Energy Saving & Manpower Saving: Insulating castable is usually mixed with a certain percentage before construction.
  • Suitable for Harsh Condition & Easy for Construction: Insulating castable is unshaped refractory, so it can meet various construction conditions.
  • Heat Resistance & Wear and Shock Resistance
Insulating Castables Materials is Applied as Insulating Layer
Insulating Castables Materials of Professional Manufacturer

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Light Weight Insulation Castable for Sale

Insulating castable properties are so sound that they can meet the demand of the thermal-insulating layer. And as the refractory manufacturer, Rongsheng Kiln Refractory Co. Ltd, which has a complete producing line and profound strength, is always adhering to provide our customers with insulating castables with high quality and good performance.

If you have the willingness to buy lightweight insulation castable material, please contact us. We will reply to you within 12 hours.

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