Zircon refractory bricks are refractory materials with high - purity zirconium silicate (zircon) as the main crystal phase. They are made through a high - temperature sintering process, featuring excellent chemical stability and thermal properties, and are widely used in high - temperature industrial fields.
Zircon refractory bricks are refractory materials with high - purity zirconium silicate (zircon) as the main crystal phase. They are made through a high-temperature sintering process, featuring excellent chemical stability and thermal properties, and are widely used in high - temperature industrial fields.
Refractory Performance: Ultra - high melting point (2430℃)) and softening temperature under load (≥ 1650℃), suitable for extreme high-temperature environments.
Mechanical Properties: High hardness (Mohs 7.5) and compressive strength (≥ 100MPa), with strong structural stability.
Thermal Properties: Low coefficient of thermal expansion (4.2×10⁻⁶/℃)), and the thermal conductivity decreases as the temperature rises, showing outstanding thermal shock resistance.
Chemical Properties: Resistant to acid and alkali erosion, and has a strong corrosion - resistance to mol ten metals and glass melt.
| Index Items | A Aggregate - type | B Ordinary - type |
| ZrO₂ /% | ≥ 65 | ≥ 65 |
| SiO₂ /% | ≤ 33 | ≤ 33 |
| Fe₂O₃ /% | ≤ 0.2 | ≤ 0.2 |
| Bulk Density /g/cm³ | ≥ 3.80 | ≥ 3.75 |
| Apparent Porosity /% | ≤ 17 | ≤ 17 |
| Compressive Strength at Normal Temperature /MPa | ≥ 100 | ≥ 80 |
| Softening Temperature under Load 0.2MPa, T0.6 / °C | ≥ 1680 | ≥ 1650 |
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