Phosphate Bonded High Alumina Bricks are specialized refractory bricks made by combining high-grade bauxite or high alumina aggregate with a phosphate binder. These bricks are chemically bonded and are known for their excellent thermal shock resistance, strong mechanical strength, and outstanding resistance to acidic slag and alkali vapors. They are ideal for use in various high-temperature industrial applications, especially in environments with fluctuating temperatures and chemical exposure.
Technical Specifications
| Property | Value |
|---|---|
| Brand | Xintai |
| Al₂O₃ Content | ≥ 75% |
| Bond Type | Chemical (Phosphate Bonded) |
| Bulk Density | 2.80 – 3.00 g/cm³ |
| Cold Crushing Strength (CCS) | ≥ 100 MPa (1000 kg/cm²) |
| Refractoriness Under Load (RUL) | ≥ 1450°C |
| Thermal Shock Resistance | ≥ 25 cycles (1100°C – water quenching) |
| Apparent Porosity | ≤ 16% |
| Working Temperature | Up to 1600°C |
| Standard Size | 230×114×65 mm (Custom sizes available) |
| Certification | ISO9001 / ISO14001 / ISO45001 / ISO50001 |
| Sample | Available upon request |
Key Features
High Alumina Content: Made with premium-grade bauxite ensuring superior refractoriness and durability.
Phosphate Bonded: Offers excellent chemical bonding at lower curing temperatures compared to traditional fired bricks.
Thermal Shock Resistance: Performs reliably under rapid temperature changes without cracking or structural failure.
Chemical Resistance: Resists attack from acidic slags, alkali vapors, and iron oxides.
Excellent Mechanical Strength: Capable of withstanding high loads and impacts in harsh operating conditions.
No Firing Required: Can be used after drying, shortening construction time and saving energy.
Good Workability: Can be cut and shaped easily on-site.
Typical Applications
Phosphate Bonded High Alumina Bricks are widely used in:
Rotary kilns (especially in transition and calcining zones)
Incinerators for hazardous or municipal waste
Cement and lime kilns
Non-ferrous metal refining furnaces
Blast furnaces and hot blast stoves
Industrial boilers and reheating furnaces
Production Details
Xintai Phosphate Bonded High Alumina Bricks are engineered using high-purity bauxite aggregate and high-grade alumina fines, bonded with carefully selected phosphate binders. The bricks are shaped under high pressure and fired at controlled temperatures to ensure optimal density, mechanical strength, and thermal shock resistance.
Packing and Shipping Details
Packing:
Bricks are securely packed in fumigation-free wooden pallets with waterproof wrapping to prevent damage during transit.Shipping:
Worldwide delivery by sea, air, or land.
Flexible shipping terms: FOB, CIF, EXW available.
Timely dispatch with tracking provided.
Frequently Asked Questions (FAQ)
Q1: What is the main application of phosphate bonded high alumina bricks?
They are widely used in blast furnaces, hot blast stoves, cement kilns, and other high-temperature industrial furnaces.
Q2: What is the maximum working temperature of these bricks?
Up to 1,500°C, depending on the specific formulation and application environment.
Q3. Can the bricks be customized based on size or chemical composition?
Yes. We offer customization to meet your specific requirements in size, AL₂O₃ content, and bonding agent proportion.
Q4: Do you offer samples for testing?
Yes. Free samples are available; shipping costs are borne by the buyer.
