High Alumina Bricks for Steel Ladle are specially engineered to endure the extreme conditions inside steel ladles. These bricks combine high-temperature resistance with exceptional mechanical strength, making them an ideal choice for the demanding applications in steelmaking processes. With a composition that includes high alumina content and silicon carbide, these bricks offer superior thermal shock resistance, wear resistance, and slag erosion resistance.
Technical Specifications
| Item | SK-36 | SK-37 | SK-38 | SK-40 |
|---|---|---|---|---|
| Al₂O₃%(≥) | 55 | 65 | 75 | 80 |
| Fe₂O₃%(≤) | 2.0 | 2.0 | 2.0 | 2.0 |
| 0.2Mpa Refractoriness Under Load (℃)≥ | 1450 | 1470 | 1530 | 1600 |
| Apparent Porosity (%) | 23 | 22 | 20 | 18 |
| Bulk Density (g/cm³) | 2.3 | 2.4 | 2.5 | 2.65 |
| Cold Crushing Strength (MPa)≥ | 40 | 55 | 60 | 70 |
Key Features
- High Refractoriness: With a refractoriness that exceeds 1790°C, these bricks are well-suited to handle the extreme temperatures found in steel ladles.
- Slag Resistance: The high alumina content makes these bricks highly resistant to both acidic and alkaline slags, ensuring they can withstand prolonged exposure to molten metals and slag.
- Thermal Shock Resistance: These bricks can handle rapid temperature fluctuations, with a proven ability to resist thermal shock up to 25 cycles of 1100°C water quenching.
- High Mechanical Strength: Excellent cold crushing strength (≥60 MPa) ensures the bricks maintain their integrity even under mechanical stress and long-term usage.
- Enhanced Durability: Their long service life reduces the need for frequent replacement, improving the overall efficiency of ladle operations.
Typical Applications
- Steel Ladles: Ideal for the working layer of steel ladles, handling molten metal and slag.
- Slag Lines: Effective in areas exposed to molten metal slag.
- Refining Furnaces: Suitable for use in both primary and secondary steelmaking processes, including impact zones.
Production Details
High Alumina Bricks for Steel Ladle are manufactured using a high-temperature sintering process. Raw materials like high-purity alumina, silicon carbide, and special binders are precisely proportioned, mixed, and shaped under high pressure. These bricks are then fired at temperatures exceeding 1400°C to ensure optimal density, durability, and resistance to thermal shock, slag erosion, and mechanical wear.
Packing and Shipping Details
- Packing: Bricks are packed in fumigated wooden crates, with foam protection to prevent breakage. Each crate is securely strapped and labeled with product details.
- Shipping: We offer global shipping options via sea, land, or air freight. Our certified logistics partners ensure timely and safe delivery.
Frequently Asked Questions (FAQ)
Q1: What is the main application of High Alumina Bricks for Steel Ladles?
These bricks are primarily used in steel ladles, both in primary and secondary metallurgy processes, to withstand the extreme temperatures and slag exposure typical in steelmaking.
Q2: What are the key benefits of using High Alumina Bricks?
The main benefits include high-temperature resistance, excellent thermal shock resistance, superior slag corrosion resistance, and high mechanical strength, ensuring long service life in harsh environments.
Q3. Can these bricks be customized?
Yes, we offer custom sizes to suit your specific requirements.
Q4: How do High Alumina Bricks compare to traditional refractory bricks?
High Alumina Bricks provide superior performance with higher refractoriness, better slag resistance, and enhanced mechanical strength compared to clay or semi-silica bricks.
Q5: What is the typical service temperature range?
These bricks can endure temperatures up to 1790°C and are designed for use in high-temperature environments like steel ladles.
