Corundum refractory plastic
Description:
Refractory Plastic
I. Main Product Types
- High-alumina Plastic ( AL Series)
- Ingredients: Al₂O₃ 55–75%, SiO₂ 15–30%
- Plasticity Index: 20–35%
- Maximum operating temperature: 1600℃
- Corundum mullite Quality ( CM Series)
- Al₂O₃ ≥ 85%, containing 5–8% ZrO₂
- High strength at medium temperatures ( Bending strength ≥ 8 MPa at 1000℃)
- Microexpansion properties ( 1500℃ linear change +0.5%)
- Silicon carbide composite
- SiC content: 15–25%
- Improved wear resistance 3 times
- Resist Excellent CO erosion resistance
2. Modern Production Processes
- Intelligent Ingredient Mixing System
- 3D Motion Mixing ( CV ≤ 0.8%)
- Moisture control accuracy ±0.5%
- Process Optimization for Raw Materials
- Temperature 20–30°C, humidity 60–80%
- Downtime 12–48 hours (adjusted according to material)
- Construction Technology Innovation
- Robotic spraying (thickness accuracy ±2mm)
- Microwave rapid curing (shortened time) 70%)
III. Applications
| Application Fields |
Typical Cases |
Technical Benefits |
| Metallurgy |
Repair of the ladle impact zone |
Life expectancy extended to 120 furnaces |
| Electricity |
CFB Boiler Dense Phase Zone |
Improved wear resistance 200% |
| Petrochemicals |
Liner for Cracking Furnace Bends |
Heat shock resistance of 30 times |
| Environmental protection |
Throat of the waste incinerator |
Improved corrosion resistance 50% |
4. Performance Advantages
- Comparison with Traditional Castables
- Construction Efficiency: Improved 3–5 times (no formwork required)
- Anti-peeling performance: High number of thermal shock cycles 2x
- Economic Benefits: Reduced Maintenance Costs 40%
- Special Advantages
- Heteromorphic Adaptability: Plastically Shaped Complex Structures
- Quick Fix: 4–6 hours to resume production
V. Physicochemical Indicators
1. Basic Performance ( AL-70 Type):
- Bulk density: 2.5–2.7 g/cm³ ( GB/T 2997-2025 )
- Withstand Voltage Strength: ≥40MPa ( 110℃ × 24 h )
- High-Temperature Properties:
- Flexural strength ( 1400℃ ): ≥6 MPa
- Post-burn wire deformation: ±0.8% ( 1500℃ × 3 hours )
- Special Indicators:
- Wear resistance ( ASTM C704 ): ≤15 cm³
- Construction Plasticity: Extrusion Pressure ≤0.3 MPa
Keywords:
Corundum refractory plastic
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Address: Chengguan Industrial Zone, Xinmi City, Henan Province
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