Sillimanite Shaped Brick
Category:
Description:
Sillimanite Refractory Brick
I. Core Product Types
- GXS-50 Series (Basic type)
- Ingredients: Al₂O₃ ≥ 50%, SiO₂ ≤ 45%
- Apparent porosity: ≤18%
- Load-Softening Point: ≥1550℃
- GXS-60 Series (High-performance type)
- Al₂O₃ ≥ 60%, Fe₂O₃ ≤ 1.0%
- Thermal shock resistance: ≥20 cycles (100°C water quenching)
- Bulk density: ≥2.5 g/cm³
- New Composite Brick
- Sillimanite +Silicon nitride composite (Si₃N₄ 8–12%)
- Enhanced alkali resistance 60%
- Increased wear resistance 3 times
II. Intelligent Production Processes
- Raw Material Purification System
Sillimanite concentrate flotation ( Al₂O₃ ≥ 58% )
Particle size control:
Optimize the gradation model coarse (1–3 mm): medium (0.1–1 mm): fine (<0.1 mm) = 4:3:3
- Low-temperature strengthening process
- Combined addition of andradite (sintering temperature reduced to 1350℃)
- Microwave-assisted drying (reduced energy consumption 40%)
- Digital Sintering System
- Hydrogen-fired tunnel kiln ( 1400℃±5℃)
- Real-time thermal imaging monitoring (yield ≥ 98%)
III. Applications
Application Fields
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Typical scenario
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Technical Benefits
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Glass industry
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Liquid Flow Molded
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Life expectancy extended to 5 years
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Iron and Steel Metallurgy
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Blast furnace throat
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70% improvement in CO corrosion resistance
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Ceramic manufacturing
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Kiln furniture (material rods/punches)
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The number of thermal cycles reaches 200.
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New energy
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Polycrystalline silicon ingot casting mold
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Silicon adhesion rate reduced by 80%
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IV. Performance Advantage Analysis
- Comparison with Traditional Materials
- High-temperature resistance: 1650℃ vs high-alumina brick 1500℃
- Thermal shock stability: 20 times vs. clay bricks 5 times
- Erosion resistance: glass melt erosion rate 0.3 mm/year
- Economic Performance
- Cost: Lower than that of electrofused zirconia-alumina bricks. 60%
- Maintenance cycle: 3-year no-replacement warranty
V. Latest Physicochemical Indices
1. Basic performance ( GXS-60 ):
Bulk density: 2.55 ± 0.05 g/cm³ （ GB/T 2998-2025 )
Withstand Voltage Strength: ≥60MPa （ ISO 10059:2026 )
- High-temperature characteristics:
Change in the re-burning line: ±0.1% （ 1500℃ × 2 h ) - Thermal conductivity: 1.5 W/(m·K) (800℃)
- Special indicators:
Resistance to glass erosion: ≤0.5 mm/1000 h （ 1450°C ) - Alkali resistance: Potassium oxide Erosion-induced weight gain ≤0.3%
Keywords:
Sillimanite Shaped Brick
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whatsapp:+8615936268068
Phone:+86-15936268068
Email:zzjsrefractory@gmail.com
Address: Chengguan Industrial Zone, Xinmi City, Henan Province
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