Alkali Resistant Insulating Fire Brick - 32-34% Al2O3 Clay Refractory Material for Tunnel Kilns
Price:
Negotiation
MOQ:
1000pcs
Delivery Time:
30-60days
Brand:
BBT
Product Description
Product Overview
Clay refractory bricks with 30-48% alumina content, manufactured using clay clinker as aggregate and refractory clay as binder. These alkali-resistant insulating fire bricks offer excellent thermal performance for high-temperature industrial applications.
Material Composition
Primary clay minerals include kaolinite (Al2O3·2SiO2·2H2O), dickite, montmorillonite (Al2O3·4SiO2·6H2O), and mica minerals. Raw materials are categorized as hard clay (used as clinker after calcination) and light clay (used as binder due to excellent plasticity and sintering properties).
Key Applications
- High temperature furnaces and hot blast furnaces
- Iron furnaces, ladles, and casting systems
- Soaking furnaces and heating furnaces
- Non-ferrous metal melting furnaces
- Silicate industry kilns and chemical industry equipment
- Thermal equipment chimneys and flue systems
Industry Applications
Widely utilized across multiple industrial sectors including metallurgy, building materials, chemical processing, petroleum, machinery manufacturing, silicate production, and power generation.
Technical Specifications
| Parameter | Test Condition | Unit | Specification | Typical Value |
|---|---|---|---|---|
| Al2O3 Content | % | ≤35 | 32-34 | |
| SiO2 Content | % | 62-64 | ||
| Fe2O3 Content | % | ≤1.8 | 1.6 | |
| Thermal Shock Resistance | TSR - in water at 1100°C | cycle | ≥15 | 16 |
| Refractoriness Under Load | RUL (0.2MPa) | °C | ≥1310 | 1330 |
| Thermal Expansion | TE - 1000°C | % | 0.6 | |
| Cold Crushing Strength | CCS | MPa | ≥45 | 57 |
| Thermal Conductivity | TC - 700±25°C | W/m·K | ≤1.5 | 1.5 |
| Alkali Resistance | 1100°C × 5h | First grade |
Product Images
Performance Advantages
These clay refractory bricks provide excellent thermal shock resistance (16 cycles at 1100°C), high refractoriness under load (1330°C), and superior alkali resistance (first grade). With cold crushing strength of 57 MPa and thermal conductivity of 1.5 W/m·K, they deliver reliable performance in demanding industrial environments.
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Company
Xi'an BBT Clay Technologies Co., Ltd.
Location
Room 0511, Lvdi Lanhai Building, Xi'An High Technology Zone, Xi'An, China
Contact Person
Pan