High Alumina Arch Bricks are shaped refractory products manufactured from high-quality high-alumina bauxite clinker and other selected refractory raw materials. Through precise batching, mixing, mold pressing, and high-temperature firing, these bricks achieve reliable structural strength and excellent resistance to high-temperature operating conditions.
Designed with curved surfaces and complementary arch profiles, High Alumina Arch Bricks fit the inner walls of cylindrical kilns, furnaces, and other thermal processing equipment. Their carefully designed geometry helps reduce joint gaps between bricks, improve lining integrity, and maintain the stability of refractory structures during operation.
With an alumina content ranging from 55% to 78%, these bricks offer good refractoriness, mechanical strength, and resistance to corrosion and material erosion. They are suitable for applications requiring durable refractory linings, including steel ladles, blast furnaces, hot-blast stoves, industrial boilers, glass furnaces, cement kilns, and other high-temperature equipment. Xintai Refractory provides High Alumina Arch Bricks in various grades, shapes, and dimensions. Customized curved bricks can be manufactured according to customer drawings, lining thicknesses, installation positions, and specific operating conditions.
Technical Specifications
| Item | XT-55 | XT-60 | XT-70 | XT-80 |
|---|---|---|---|---|
| Al₂O₃% (≥) | 55 | 60 | 70 | 80 |
| Fe₂O₃% (≤) | 2.0 | 2.0 | 2.0 | 2.0 |
| 0.2 MPa Refractoriness Under Load (℃) ≥ | 1450 | 1480 | 1530 | 1600 |
| Apparent Porosity (%) | 23 | 22 | 20 | 18 |
| Bulk Density (g/cm³) | 2.3 | 2.45 | 2.55 | 2.65 |
| Cold Crushing Strength (MPa) ≥ | 40 | 55 | 60 | 70 |
Key Features
- High Refractoriness: High Alumina Arch Bricks are designed for demanding high-temperature environments. Their alumina-rich composition helps maintain refractory performance and structural stability under suitable operating conditions.
- Excellent Corrosion Resistance: The carefully selected raw materials provide good resistance to chemical attack and erosion under appropriate service conditions. These properties help protect the refractory lining when exposed to furnace atmospheres, hot materials, and compatible slags.
- Strong Mechanical Stability: The dense brick structure and high-temperature firing process contribute to good mechanical strength. Properly selected grades help resist cracking, chipping, and surface deterioration during installation and service.
- Curved Design for Tighter Installation: The arch-shaped profile allows bricks to fit curved or cylindrical structures more closely than unsuitable straight bricks. Properly matched shapes help reduce joint gaps and improve the continuity of the refractory lining.
- Long Service Life: High Alumina Arch Bricks combine heat resistance, mechanical stability, and corrosion resistance to support long-term operation. Actual service life depends on temperature fluctuations, slag composition, installation quality, and operating conditions.
- Flexible Sizes and Customization: Different industrial applications require different arch radii, brick thicknesses, and lining configurations. Xintai can supply various specifications and manufacture non-standard shapes according to technical drawings and project requirements.
Typical Applications
- Steel Ladles: High Alumina Arch Bricks can be used in suitable refractory lining structures for steel ladles and related steelmaking equipment. The selected grade should match the operating temperature, slag chemistry, and service conditions.
- Blast Furnaces: These bricks can be applied in appropriate furnace sections where shaped refractory materials are required to form stable curved linings.
- Hot-Blast Stoves: Arch-shaped refractory bricks are suitable for selected lining structures in hot-blast stoves, subject to the temperature profile and design requirements of the equipment.
- Industrial Boilers: High Alumina Arch Bricks can be used in suitable high-temperature boiler sections and other thermal processing equipment that require shaped refractory linings.
- Glass Furnaces: For compatible furnace sections, curved high-alumina bricks help form refractory structures that withstand elevated temperatures and thermal operating conditions.
- Cement Kilns and Rotary Kilns: The curved geometry is suitable for selected kiln linings and cylindrical thermal equipment. Brick grade, dimensions, and installation design should be chosen according to the kiln’s operating environment.
- Fertilizer Gasifiers and Foundries: These bricks can also be used in appropriate high-temperature lining structures for gasification equipment, casting facilities, and other industrial thermal processes.
Production Details
Xintai High Alumina Arch Bricks are manufactured through a controlled production process designed to maintain dimensional consistency and refractory performance.
- Raw Material Selection: High-quality high-alumina bauxite clinker and other suitable refractory raw materials are selected according to the required grade and application.
- Batching and Mixing: Raw materials are proportioned and mixed to achieve the target chemical composition and forming characteristics.
- Molding and Pressing: The prepared mixture is shaped using dedicated molds to produce the required arch profiles, radii, and dimensions.
- High-Temperature Firing: The shaped bricks are fired under controlled conditions to develop the required ceramic bonding, strength, and refractory properties.
- Quality Inspection: Finished products are inspected for dimensions, appearance, and relevant technical properties according to the applicable product specifications.
Packing and Shipping Details
Packing: High Alumina Arch Bricks can be packed in suitable export packaging, such as wooden crates or pallets, with protective measures to reduce the risk of chipping and breakage during handling and transportation.
Shipping: Xintai can coordinate international shipping according to order quantity, destination, and delivery requirements. Shipping arrangements and packaging details can be confirmed before order placement.
Frequently Asked Questions (FAQ)
Q1: What are High Alumina Arch Bricks used for?
High Alumina Arch Bricks are used to construct curved refractory linings in suitable high-temperature equipment, including steel ladles, furnaces, industrial boilers, glass furnaces, cement kilns, and other thermal processing systems.
Q2: What is the alumina content of High Alumina Arch Bricks?
The alumina content can range from 55% to 78%, depending on the selected grade. The appropriate composition should be determined according to the operating temperature, chemical environment, and mechanical requirements.
Q3: Can High Alumina Arch Bricks be customized?
Yes. Custom manufacturing is available according to drawings, dimensions, arch radii, lining thicknesses, and installation requirements. Customers are encouraged to provide detailed technical drawings when requesting a quotation.
Q4: What are the main advantages of arch-shaped refractory bricks?
Their curved profiles help match cylindrical or curved structures, reduce joint gaps when properly designed and installed, and improve the continuity and stability of the refractory lining.
Q5: How do I select the right High Alumina Arch Bricks?
Consider the alumina content, operating temperature, slag and chemical exposure, thermal cycling, mechanical loading, lining geometry, and installation method. Xintai can help evaluate the required specifications based on your application details.
