High Alumina Anchor Bricks for Furnace Walls are specially designed refractory bricks used to anchor and support refractory linings in high-temperature industrial furnaces and kiln walls. Manufactured with alumina-rich refractory raw materials, these bricks provide a strong and stable connection between the furnace structure, metal anchoring components, and refractory lining.
The unique anchor-brick design helps improve the mechanical stability of furnace walls and reduces the risk of refractory lining displacement, peeling, cracking, and collapse during long-term operation. With good high-temperature strength, thermal shock resistance, and resistance to hot gases and corrosive environments, high alumina anchor bricks are suitable for demanding furnace applications.
At Xintai Refractory, High Alumina Anchor Bricks can be supplied in different grades, shapes, and dimensions according to furnace design and installation requirements. Standard sizes and customized solutions are available for industrial furnace and kiln projects.
Technical Specifications
| Project | LZ-55A | LZ-55B | LM-75A | LM-75B |
|---|---|---|---|---|
| Al₂O₃ % ≥ | 55.0 | 55.0 | 75.0 | 75.0 |
| CaO % ≤ | 2.0 | 2.0 | 2.0 | 2.0 |
| Normal Temperature Compressive Strength MPa ≥ | 50 | 50 | 55 | 55 |
| Load Softening Starting Temperature ℃ ≥ | 1450 | 1450 | 1550 | 1550 |
| Apparent Porosity % ≤ | 22 | 24 | 21 | 23 |
| Bulk Density g/cm³ | 2.30 | 2.30 | 2.60 | 2.60 |
Key Features
- High Mechanical Strength: Cold crushing strength of 50–55 MPa provides reliable structural support for refractory furnace walls.
- Excellent High-Temperature Performance: Load softening starting temperatures of 1450–1550°C help maintain structural stability under demanding thermal conditions.
- Good Thermal Shock Resistance: Designed to withstand repeated heating and cooling cycles with reduced risk of thermal damage.
- Strong Anchoring Performance: The specialized shape allows the bricks to work with anchoring systems to stabilize refractory linings.
- Excellent Peeling Resistance: Helps reduce lining displacement and peeling caused by thermal stress, vibration, and furnace operation.
- Good Corrosion Resistance: Suitable for environments exposed to hot gases, dust, and corrosive furnace atmospheres.
- Multiple Grade Options: LZ-55A, LZ-55B, LM-75A, and LM-75B grades provide different alumina levels and physical properties.
- Customizable Dimensions: Shapes, dimensions, and grades can be customized according to furnace wall design and installation requirements.
Typical Applications
High Alumina Anchor Bricks for Furnace Walls are widely used in high-temperature industrial equipment where stable refractory lining support is required.
Typical applications include:
- Industrial furnace walls
- Industrial furnace roofs and tops
- Electric furnaces
- Blast furnaces
- Hot blast furnaces
- Rotary kilns
- Reverberatory furnaces
- Regenerative heating furnaces
- High-temperature heat treatment furnaces
- Metallurgical furnace linings
- Other industrial kiln and furnace structures
These refractory anchor bricks are particularly suitable for furnace walls that require reliable mechanical anchoring and resistance to high temperatures, thermal cycling, and mechanical stress.
Production Details
Xintai High Alumina Anchor Bricks are manufactured using carefully selected alumina-rich refractory raw materials. The production process includes raw material preparation, precise batching, mixing, molding, drying, and high-temperature firing.
During production, strict quality control is applied to maintain consistent chemical composition, dimensional accuracy, bulk density, apparent porosity, and mechanical strength. The firing process is carefully controlled to develop the required refractory structure and high-temperature performance.
Each batch is inspected before shipment to help ensure that the finished anchor bricks meet the specified technical requirements. Different grades, shapes, and sizes can be produced according to customer drawings, furnace construction requirements, and installation conditions.
Packing and Shipping Details
Packaging: Packed in strong wooden pallets with protective wrapping
Shipping Time: 7–15 working days after order confirmation
Storage: Keep in dry, ventilated area to avoid moisture absorption
Customization: Shapes and sizes can be tailored to customer specifications
Frequently Asked Questions (FAQ)
Q1: What are High Alumina Anchor Bricks?
High Alumina Anchor Bricks are specially shaped refractory bricks used to anchor and stabilize refractory linings in furnace walls, roofs, and other high-temperature structures. They provide mechanical support while maintaining good resistance to heat and thermal stress.
Q2: What is the Al₂O₃ content of these anchor bricks?
The available grades contain 55–75% Al₂O₃. LZ-55A/B grades contain at least 55% Al₂O₃, while LM-75A/B grades contain at least 75% Al₂O₃.
Q3. What is the maximum service temperature?
The maximum service temperature can reach up to 1600°C, depending on the specific grade, furnace design, and operating conditions.
Q4: Can the anchor bricks be customized?
Yes. Xintai can manufacture customized anchor bricks in different shapes, dimensions, grades, and configurations according to customer drawings and furnace construction requirements.
Q5: Where are High Alumina Anchor Bricks used?
They are commonly used in industrial furnace walls, furnace roofs, electric furnaces, blast furnaces, rotary kilns, reverberatory furnaces, hot blast furnaces, and other high-temperature refractory lining systems.
Q6: How should High Alumina Anchor Bricks be stored?
The bricks should be stored in a dry, clean, and well-ventilated area and protected from rain and moisture before installation. Proper storage helps preserve their physical properties and prevents moisture-related damage.
