Steel Ladle Nozzle Refractory is a high-performance refractory component designed for molten steel flow control in steelmaking and continuous casting operations. Installed in the ladle slide gate system, the steel ladle nozzle regulates the discharge of molten steel from the ladle to the tundish, supporting stable pouring conditions and reliable casting performance.
Xintai manufactures steel ladle nozzle refractory products using carefully selected refractory raw materials, including sintered corundum, fused corundum, fused mullite, alumina carbon, zirconia alumina carbon, magnesia carbon, and spinel carbon. Advanced resin bonding and high-pressure forming technologies help achieve the required density, mechanical strength, thermal stability, and resistance to molten steel corrosion.
Available in different material compositions, grades, and dimensions, our steel ladle nozzles can be customized to meet specific steelmaking processes, casting requirements, and equipment configurations. They are suitable for steel plants seeking dependable refractory solutions for ladle metallurgy and continuous casting applications.
Technical Specifications
| Items | Z-70 | Z-95-1 | Z-95-2 | Z-95-3 | Z-95-4 | W-1 | W-2 |
|---|---|---|---|---|---|---|---|
| Zr(Hf) O2 (%) ≥ | 70 | 93 | 93 | 93 | 93 | / | / |
| Al2O3 (%) ≥ | / | / | / | / | / | 75 | 80 |
| Apparent porosity (%) ≤ | 22 | 20 | 16 | 15 | 13 | 24 | 18 |
| Bulk Density (g/cm3) ≥ | 3.8 | 4.5 | 4.8 | 5.1 | 5.3 | 2.3 | 2.6 |
Key Features
- Excellent High-Temperature Resistance: Designed for demanding steelmaking environments, steel ladle nozzle refractory products can withstand temperatures up to 1700°C, depending on material grade and operating conditions.
- Superior Corrosion and Erosion Resistance: Selected refractory materials help resist the chemical attack of molten steel and slag, as well as erosion caused by high-speed molten metal flow, supporting reliable operation during casting.
- Stable Molten Steel Flow Control: Precision manufacturing and customizable internal dimensions help maintain consistent flow characteristics, contributing to accurate steel discharge and stable continuous casting processes.
- High Mechanical Strength and Structural Stability: Optimized material formulations and high-pressure forming help provide the mechanical integrity required for installation, handling, and high-temperature service.
- Multiple Material Options: Available material systems include alumina carbon, zirconium alumina carbon, magnesia carbon, spinel carbon, and zirconia-based compositions, allowing customers to select suitable products for different steel grades and casting conditions.
- Custom Sizes and Grades: Xintai offers customizable nozzle dimensions, internal diameters, and material grades according to ladle design, slide gate configuration, and customer process requirements.
Typical Applications
- Steelmaking Plants: Used in basic oxygen furnace (BOF), electric arc furnace (EAF), and secondary metallurgy operations.
- Ladle Slide Gate Systems: Installed in ladle flow-control assemblies to regulate molten steel discharge.
- Continuous Casting Operations: Helps deliver molten steel from the ladle to the tundish under controlled operating conditions.
- Tundish Metallurgy: Compatible refractory flow-control components can be selected for tundish applications, subject to the required design and material specifications.
- Special Steel Production: Suitable nozzle grades can be selected for different steel compositions, casting temperatures, and process requirements.
Production Details
Xintai uses controlled refractory production procedures to support consistent product quality and performance.
Raw Material Selection: Select refractory raw materials according to the required chemical composition and application.
Mixing and Formulation: Prepare material blends with controlled proportions and suitable bonding systems.
High-Pressure Forming: Shape the nozzle body to achieve the specified dimensions and structural characteristics.
Processing and Finishing: Apply the appropriate treatment and precision finishing procedures for the selected material system.
Quality Inspection: Check dimensions and relevant physical or chemical properties according to applicable product specifications.
Packaging and Delivery: Pack finished products to help protect them during storage and transportation.
Packing and Shipping Details
Packaging: Wooden pallets and protective boxes, with packaging arrangements customized according to product dimensions and customer requirements.
Shipping: Sea freight for bulk orders; express delivery may be arranged for samples where available.
Delivery Time: Standard products depend on stock availability. Customized products require confirmation according to grade, dimensions, order quantity, and production schedule.
Frequently Asked Questions (FAQ)
Q1: Can you customize steel ladle nozzle size and material?
Yes. Xintai can provide customized steel ladle nozzle refractory products according to the required material grade, internal diameter, overall dimensions, ladle design, and slide gate system. Please provide a drawing or technical specification for evaluation.
Q2: What materials are available for steel ladle nozzles?
Available material options include alumina carbon, zirconium alumina carbon, magnesia carbon, spinel carbon, corundum, mullite, and zirconia-based compositions. The appropriate material depends on the casting process, molten steel characteristics, and required service performance.
Q3. What is the maximum operating temperature?
The products are designed for high-temperature steelmaking applications, with temperature resistance of up to 1700°C for suitable grades. Actual performance depends on the material composition, operating conditions, and installation.
Q4: What factors affect the service life of a steel ladle nozzle?
Service life depends on refractory composition, molten steel and slag chemistry, casting temperature, flow velocity, thermal cycling, installation quality, and operating practices. Selecting the correct grade for the application is essential.
Q5: How are steel ladle nozzles packaged for export?
Products can be packed in protective boxes on wooden pallets to reduce the risk of damage during handling and transportation. Packaging details can be adjusted to suit order quantities and shipping requirements.
