1.High mechanical strength,
2.Excellent thermal shock stability,
3.Good corrosion resistance to glass liquid,
4.Acid refractory,Good creep resistance.
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Item | Dense Zirconia brick | Zirconia brick | Zirconia -corundum brick | Zirconia -mullite brick | Semi-Zirconia brick |
ZrO2 % | ≥65 | ≥60 | ≥30 | ≥18 | ≥15—20 |
Al2O3 % | - | - | ≥45 | ≥55 | ≥50—60 |
SiO2 % | - | ≤38 | ≤25 | ≤25 | ≤20 |
Fe2O3 % | ≤0.3 | ≤0.5 | ≤0.5 | 1.2 | 1.2 |
Apparent porosity % | ≤18 | ≤22 | ≤20 | ≤17 | ≤20 |
Bulk density g/cm3 | ≥3.7 | ≥3.5 | ≥3.2 | ≥2.7 | ≥2.7 |
Cold compressive strength MPa | ≥100 | ≥100 | ≥100 | ≥100 | ≥100 |
Refractoriness under load°C | ≥1650 | ≥1620 | ≥1650 | ≥1650 | 155 |
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