Fused Silica Bricks, also called Zero Expansion Silica Brick, mainly consist of high purity fused silica materials. Its has many superior properties including excellent thermal shock resistance, nearly zero expansion rate, high refractoriness under load and low creep rate, high corrosion resistance to chemical substances and molten metals.
The fused silica brick can be fabricated into various sizes, including very large blocks as well as into complex shapes, depending on shape and application such as arch brick, hanger, peephole, burner, nozzle, damper, sagger, pillar, etc.
The bricks can also be used without preheating, which is ideal material for glass furnace hot repair.
Firebird fused silica feeder expendable are vacuum casting to shape, which include spouts, orifice rings, plunger, tubes, stirrer, gathering ball, rings, etc. These expendable are customs production according to customer’s drawings.
Venturing beyond bricks, Firebird offers an impressive range of fused silica feeder expendables, meticulously crafted through a vacuum casting process. This includes, but is not limited to, spouts, orifice rings, plungers, tubes, stirrers, gathering balls, and rings. Tailored to precision, these components are custom-manufactured in alignment with client- specific blueprints, ensuring a flawless fit and optimized performance.
Fused silica bricks offer excellent thermal shock resistance and low expansion rate, making them ideal to withstand the rapid temperature changes that occur during the glassmaking process.
In addition to their thermal properties, fused silica bricks also have good resistance to chemical attack from molten glass and other corrosive materials used in glass production. This helps to extend the lifespan of the bricks and ensures they can continue to provide effective insulation and protection for the furnace.
Overall, fused silica bricks are a critical component of glass furnace construction, helping to create a durable and efficient lining that can withstand the demanding conditions of glass production. Their high performance and reliability make them a popular choice for glass manufacturers looking to optimize their production processes.
| Grade | Unit | FS-995 | FS-985 | FS-97 | FS-95 |
| SiO2 | % | ≥99.5 | ≥98.5 | ≥97 | ≥95 |
| AI2O3 | % | — | ≤1.0 | — | ≤3 |
| Fe2O3 | % | ≤0.2 | ≤0.2 | ≤0.2 | ≤0.3 |
| Bulk Density | g/cm3 | 1.9 | 1.85 | 1.8 | 1.75 |
| Apparent Porosity | % | 5~15 | ≤20 | ≤20 | ≤20 |
| Cold Crushing Strength | MPa | ≥50 | ≥35 | ≥30 | ≥30 |
| Thermal Expansion (RT-1000℃) ( × 10-6/℃) | % | 0.6 | 0.6 | 0.7 | 0.8 |
| Refractoriness Under Load, Ta | ℃ | ≥1680 | ≥1670 | ≥1650 | ≥1550 |
| Thermal Shock Resistance 1100℃ to cool water | Cycles | ≥30 | ≥50 | ≥40 | ≥40 |
