Lightweight Insulating Castables are energy-saving porous monolithic refractory materials made of lightweight refractory aggregate, fine powder and high-efficiency inorganic binders. Processed into uniform dry powder, it can be mixed with water and cast on-site to form integral thermal insulation lining, designed specifically for furnace heat preservation rather than load-bearing or anti-slag working surfaces.
Key Features：
- Ultra-low bulk density, greatly reduce the overall structural load of industrial furnaces.
- Low thermal conductivity and excellent heat insulation performance, obvious energy-saving effect.
- Stable high-temperature insulation performance, no shrinkage, no cracking under long-term heating.
- Good construction fluidity, suitable for complex structural heat preservation layers.
- Light weight and easy operation, shorten furnace construction and maintenance cycle.
- Eco-friendly and cost-effective for various industrial furnace back-up insulation.
Available Grades：
Grade LW06: Bulk density ≤0.6 g/cm³
Grade LW08: Bulk density ≤0.8 g/cm³
Grade LW10: Bulk density ≤1.0 g/cm³
Main Applications：
- Back-up thermal insulation layer for all kinds of high-temperature industrial kilns and furnaces.
- Outer lining insulation of heating furnaces, boilers, drying furnaces and heat treatment furnaces.
- Flue, chimney and low-load high-temperature equipment thermal insulation projects.
- Energy-saving transformation and thermal insulation reinforcement of old furnaces.
- Precast lightweight insulation blocks for furnace body heat preservation.
Available Sizes & Packing：
Packing: 1MT ton bags, 25 kg bags or on request.
COA certificate provided per batch.
Specification:
Chemical Composition | LW06 | LW08 | LW10 |
Al₂O₃ | 30% min | 32% min | 35% min |
Bulk Density | 0.6 g/cm³ max | 0.8 g/cm³ max | 1.0 g/cm³ max |
Thermal Conductivity (350℃) | 0.22 W/(m·K) max | 0.25 W/(m·K) max | 0.29 W/(m·K) max |
Refractoriness | 1250℃ | 1280℃ | 1300℃ |
*Specifications and Sizes can be customized upon request.