Fiberglass furnaces are designed for continuous glass melting and fiber drawing operations. Compared with rock wool and basalt melting furnaces, fiberglass furnaces require cleaner melting environments, more stable temperatures, and higher resistance to glass liquid contamination. Because furnace stability directly affects fiber quality and production efficiency, refractory materials used in fiberglass furnaces must provide excellent corrosion resistance, dimensional stability, and long service life. Kerui Refractory provides refractory solutions for fiberglass furnaces, including glass contact refractories, furnace roof systems, insulation structures, and maintenance support.
Key Damaged Areas in Fiberglass Furnaces
| Furnace Area | Main Damage Mechanism | Recommended Refractory Materials |
| Charging Area | Thermal shock, abrasion | High Alumina Brick / Wear Resistant Castable |
| Furnace Roof | High temperature radiation | Silica Brick / Ceramic Fiber Module |
| Melting Tank | Glass corrosion, molten penetration | Fused Cast AZS Brick / Zircon Brick |
| Glass Line | Glass erosion, chemical attack | AZS Brick / Zircon Brick |
| Burner Area | Flame erosion, thermal cycling | Mullite Castable / Low Cement Castable |
| Forehearth | Temperature fluctuation | Mullite Brick / Corundum Castable |
| Working End | Glass flow erosion | AZS Brick / Silicon Carbide Brick |
| Flue System | Heat loss, gas erosion | Insulating Fire Brick / Lightweight Castable |
Charging Area
The charging area is affected by repeated thermal shock and mechanical impact from raw material feeding.
- High Alumina Brick: stable mechanical strength and thermal shock resistance
- Wear Resistant Castable: suitable for abrasion-prone charging zones
Furnace Roof
The furnace roof operates under long-term high-temperature radiation and requires stable insulation performance.
- Silica Brick: excellent high-temperature load-bearing performance
- Ceramic Fiber Module: low thermal conductivity and energy-saving insulation
- Mullite Brick: stable structure under thermal cycling conditions
Melting Tank
The melting tank is continuously exposed to molten glass and severe chemical corrosion.
- Fused Cast AZS Brick: excellent resistance to molten glass corrosion
- Zircon Brick: strong resistance to glass liquid penetration
- Corundum Castable: suitable for high-temperature wear areas
Glass Line Area
The glass line area is exposed to molten glass fluctuation and long-term chemical attack.
- AZS Brick: strong resistance to glass erosion and chemical attack
- Zircon Brick: excellent corrosion resistance in glass contact zones
- Low Cement Castable: low porosity and good structural stability
Burner Area
The burner area experiences direct flame exposure and rapid temperature changes.
- Mullite Castable: excellent thermal shock resistance
- Low Cement Castable: improved resistance to thermal cycling
- Andalusite Brick: good crack resistance under flame conditions
- Forehearth and Working End
The forehearth and working end require stable thermal conditions to maintain consistent glass flow and fiber quality.
- Mullite Brick: stable thermal performance under continuous operation
- Corundum Castable: excellent wear resistance and high-temperature strength
- Silicon Carbide Brick: good thermal conductivity and erosion resistance
- Technical Support for Fiberglass Furnaces
Kerui Refractory provides customized refractory support for fiberglass furnace projects, including:
- Furnace lining design optimization
- Glass contact refractory recommendations
- Furnace insulation improvement
- Corrosion analysis and troubleshooting
- Furnace maintenance and repair support
To provide suitable refractory recommendations, the following information is recommended:
| Required Information | Description |
| Furnace Condition | New project / Repair / Rebuild |
| Furnace Type | Fiberglass tank furnace / Electric melting furnace |
| Furnace Dimensions | Furnace size and lining structure |
| Operating Temperature | Working temperature range |
| Glass Composition | E-glass, C-glass, basalt additive, etc. |
| Current Refractory | Existing lining materials |
| Main Problems | Glass corrosion, cracking, erosion, leakage |
| Damaged Area | Tank, glass line, forehearth, roof, etc. |
Based on furnace operating conditions and glass composition, Kerui Refractory can provide optimized refractory selection and complete technical support solutions.
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