High Temperature Resistant Erosion and Wear Resistant Tuyere Lining for Blast Furnace
Product Description
Small tuyere lining and middle tuyere lining are core protective components for blast furnace tuyere devices, directly determining the service life of tuyeres and the stable operation of blast furnaces. These components provide comprehensive protection against high temperature, molten iron, slag erosion, and coal powder scouring.
Installed on the inner wall of the small tuyere sleeve (front end extending into the furnace), it directly faces harsh working environments including continuous high temperatures of 1600–2000°C, molten iron splashing, coal powder scouring, and slag erosion. Its primary function is to protect the copper small sleeve body from melting and cracking.
Installed on the inner wall of the middle tuyere sleeve (connecting section between small and large sleeves), it withstands high-temperature hot air, coal powder airflow scouring, and thermal stress impact. This component supports the overall tuyere structure and effectively reduces heat loss.
- High Temperature Resistance: Withstands continuous temperatures above 1600°C with excellent thermal shock resistance
- Erosion Resistance: Resists chemical erosion from molten iron, slag, and alkali metals
- Wear Resistance: Resists mechanical scouring from high-speed coal powder and furnace materials
- Heat Insulation & Energy Saving: Reduces hot air temperature loss and protects outer metal body
- Flow Stabilization: Ensures uniform and stable hot air and coal powder airflow
Small Tuyere Lining Materials: SiC Composite Ceramic, Fused Brown/White Corundum, Zircon Mullite/Zircon Ceramic, Composite Wear-Resistant Castable
Middle Tuyere Lining Materials: High-Alumina Castable, Magnesia-Alumina/Spinel, Silicon Nitride Bonded SiC
| Parameters | Small Tuyere Lining (High-End) | Middle Tuyere Lining (Standard) |
|---|---|---|
| Refractory Temperature | 1650–1800°C | 1450–1600°C |
| Bulk Density | 2.9–3.2 g/cm³ | 2.5–2.8 g/cm³ |
| Compressive Strength | ≥80 MPa | ≥50 MPa |
| Thermal Conductivity | 10–20 W/m·K (SiC) | 1.5–3.0 W/m·K |
| Thermal Shock Stability | ≥30 times (1100°C water cooling) | ≥20 times |
| Hardness (HV) | 1200–1600 | 800–1000 |
| Thickness | 20–50 mm | 30–80 mm |
- Long Service Life: 3–5 times longer than pure copper inner wall
- Strong Erosion Resistance: Prevents direct contact between molten materials and copper body
- Enhanced Wear Resistance: Reduces coal powder wear by 70%+
- Safety & Reliability: Prevents water leakage and burnout accidents
- Heat Insulation: Reduces hot air temperature drop by 30–50°C
- Structural Stability: Supports small sleeve and absorbs thermal expansion
- Cost-Effective: Balances service life with maintenance costs
- Small Tuyere Lining: 1000–5000m³ blast furnaces with high coal injection volumes
- Middle Tuyere Lining: Connecting sections of various blast furnace tuyeres, hot air ducts, and burners
- Custom Solutions: Tailored products based on blast furnace specifications (±0.5mm tolerance)
- Quality Assurance: Strict quality control with professional testing reports
- Technical Support: Professional guidance and quick response to quality issues
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