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Lightweight Mullite Castable – High-Temp Insulation For Kilns & Furnaces
Our Lightweight Mullite Castable (Al₂O₃ 60%-70%) is a low-density refractory solution, designed for high-temp insulation (up to 1600℃). It’s lightweight (1.0-1.5 g/cm³), cuts heat loss by 35%+, and reduces equipment load by 40% vs. heavy castables. Ideal for kiln linings, furnace insulation layers, and thermal equipment. ISO/CE certified, easy to pour & cure.
Description
1. Core Specs
| Parameter | Specification | Advantage |
|---|---|---|
| Al₂O₃ Content | 60%-70% | Ensures 1600℃ high-temp stability |
| Bulk Density | 1.0-1.5 g/cm³ | Lightweight, reduces equipment load |
| Max Service Temp | Up to 1600℃ | Fits kiln/furnace high-temp needs |
| Thermal Conductivity | ≤0.4 W/(m·K) (800℃) | Low heat loss, saves energy |
| Cold Compressive Strength | ≥15 MPa | Strong structure, no easy cracking |
| Setting Time | 4-8 hours | Easy to construct, no rush operation |
| Certification | ISO 9001, CE | Meets global industrial standards |
2. Key Advantages
Super Lightweight: Density only 1.0-1.5 g/cm³ (1/3 of heavy castables) – reduces kiln/furnace structural load, extends equipment lifespan.
High Heat Insulation: Low thermal conductivity cuts heat loss by 35%+, lowering energy costs for high-temp production (e.g., ceramic firing, steel heating).
Easy Construction: Ready-to-mix (add water only), can be poured into irregular shapes (e.g., furnace corners, kiln ducts) – no professional complex tools needed.
Durable & Stable: Resists thermal shock (1600℃→room temp no cracking) and chemical erosion – service life 2-3x longer than ordinary insulation castables.
3. Application Scenarios
Ceramic/Kiln Industry: Insulation linings for brick tunnel kilns, ceramic firing kilns (reduces energy consumption for firing).
Steel Industry: Insulation layers for EAF furnace walls, ladle covers (cuts heat loss during steel holding).
Thermal Equipment: Lining for high-temp test chambers, boiler insulation, and industrial heating furnaces.
Other Fields: Refractory insulation for waste incineration plants, petrochemical high-temp vessels.
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