Refractory Anchor Bricks are high-performance refractory bricks designed for furnace tops and industrial kilns. Manufactured with Al₂O₃ as the main raw material, these bricks form the critical support structure between the metal hanging pieces and the furnace refractory lining. Anchor bricks provide excellent high-temperature resistance, thermal shock stability, and strong peeling resistance, ensuring long-lasting durability in demanding industrial environments. At Xintai Refractory Factory, we offer a variety of specifications and custom sizes to meet your operational requirements, all at competitive prices with high-grade quality.
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 Strength: Cold crushing strength of 50–55 MPa, grade-dependent
Excellent Thermal Shock Resistance: Withstands rapid temperature changes
Strong Peeling Resistance: Maintains structural integrity at furnace tops
High Refractoriness: Load softening starting temperature 1450–1550°C
Corrosion Resistance: Resistant to reactive gases and hot atmospheres
Grade Options: LZ-55A/B and LM-75A/B with Al₂O₃ content 55–75%, CaO ≤2%
Physical Properties: Apparent porosity 21–24%, bulk density 2.30–2.60 g/cm³
Typical Applications
Xintai Anchor Bricks are widely used in:
Industrial furnace tops and roofs
Electric furnaces and blast furnaces
Rotary kilns and reverberatory furnaces
Hot blast furnaces
Open-hearth regenerative checker bricks, pouring system plugs, and nozzle stones
These bricks are essential for anchoring refractory linings, improving tensile and flexural strength, and preventing furnace roof collapse.
Production Details
Xintai Refractory Anchor Bricks are manufactured using high-purity raw materials and advanced mixing, molding, and firing technologies. Each brick undergoes rigorous quality control to ensure uniform density, optimal strength, and reliable thermal performance. The production process minimizes impurities and enhances the cold crushing and load softening strength, resulting in durable, long-lasting anchor bricks suitable for high-temperature industrial furnaces and kilns. Custom grades and sizes are available to meet specific project requirements.
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 is the difference between metal anchors and anchor refractory bricks?
Metal anchors are structural components for fixing refractory linings, while anchor refractory bricks are specially designed bricks for high-temperature furnace walls and roofs.
Q2: How to choose the right anchor brick grade?
Consider the working temperature: clay-based bricks for <1100°C, high-alumina bricks for >1100°C, and first-grade high-alumina bricks for >1250°C.
Q3. Can custom sizes be produced?
Yes, Xintai Refractory can manufacture anchor bricks in custom dimensions based on project requirements.
Q4: What precautions should be taken during installation?
Apply refractory mud carefully on both sides to prevent gas leakage
Avoid damaging the hanging parts of the bricks
Ensure proper joint sizing and expansion joints
Use air-hardening mud for masonry
Q5: Where are Xintai Anchor Bricks used?
They are widely used in electric furnaces, blast furnaces, rotary kilns, hot blast furnaces, and other high-temperature industrial equipment requiring anchored refractory linings.
