Refractory BricksSilica and fireclay bricks
Silica Brick
Silica refractory brick with high hot strength and high refractoriness under load, resistant to acid slag and dimensionally stable in long-term high-temperature service.
- Grades / types
- BG-96A, BG-96B, BG-95, JG-94, GZ-94
Product overview
Silica brick combines high strength at high temperature with a high refractoriness under load (1620–1680 ℃). It resists acid slag erosion and does not deform in long-term use at high temperature.
The residual expansion of silica brick on heating closes the masonry joints tightly, giving the lining good air-tightness and structural strength.
Key characteristics
- High strength at high temperature
- High refractoriness under load, 1620–1680 ℃
- Strong resistance to acid slag erosion
- No deformation in long-term high-temperature use
- Residual expansion on heating seals masonry joints
Technical data
| Property | Unit | BG-96A | BG-96B | BG-95 | JG-94 | GZ-94 |
|---|---|---|---|---|---|---|
| SiO₂ | % | ≥96 | ≥96 | ≥95 | ≥94.5 | ≥94 |
| Fe₂O₃ | % | ≤0.6 | ≤0.8 | ≤1.0 | ≤1.2 | ≤1.4 |
| Melt Index | % | ≤0.5 | ≤0.7 | — | — | — |
| Apparent Porosity | % | ≤21 | ≤22 | ≤22 | ≤22 | ≤24 |
| True Density | g/cm³ | ≤2.34 | ≤2.34 | ≤2.34 | ≤2.33 | ≤2.35 |
| Cold Crushing Strength (CCS) | MPa | ≥40 | ≥35 | ≥30 | ≥40 | ≥30 |
| Refractoriness Under Load, 0.2 MPa (RUL) | ℃ | ≥1680 | ≥1670 | ≥1670 | ≥1650 | ≥1650 |
| Permanent Linear Change (PLC) (1450℃×2h) | % | 0~0.2 | 0~0.2 | 0~0.2 | 0~0.2 | — |
| Residual quartz | % | ≤3 | ≤3 | ≤3 | ≤1.5 | — |
Where Refractories Are Used
Industry
Steel & Iron
Refractories in iron and steel production are used in the blast furnace, hot blast stove, cast house and coke oven on the ironmaking side, and in the hot metal ladle, converter, electric arc furnace, steel ladle, tundish, RH degasser and reheating furnace on the steelmaking side. Material selection varies by operating zone and includes silica, high alumina, magnesia, magnesia-carbon, alumina-silicon carbide-carbon and silicon carbide products together with castables, ramming mixes and mortars.
Explore IndustryIndustry
Glass
Refractories in the glass industry line the melting tank, the superstructure, the working end and forehearth, the throat and the regenerator. Different furnace types take different materials, in fused, siliceous and magnesia groups: silica, clay, high alumina, sillimanite, mullite, fused mullite, zirconia-corundum, fused corundum and zirconium-containing refractory bricks.
Explore Industry
Available grades, shapes and sizes
Available grades
- BG-96A
- BG-96B
- BG-95
- JG-94
- GZ-94
Related solutions
Services that work with this family of materials.
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Technical Consultation
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Technical data sheets are supplied on request with the quotation.Request TDS