Zircon Mullite refractory Brick ZM-20
Negotiable /Ton
Min.Order:1 Ton
Zhengzhou Sunrise Refractory Co., Ltd.
Zircon Mullite Brick
Advantage of products: Zirconia mullite bricks have better thermal shock resistance compared with pure mullite bricks. The added zirconia can improve the mullite bricks quality and becomes more suitable for regenerator of glass furnace.
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Physical and chemical index:
Item | ZM-17 | ZM-20 (Zirmul) | ZM-25 (Vista) | ZM-30 | |
Chemical composition | Al2O3 | ≥70 | ≥59 | ≥57 | ≥47 |
ZrO2 | ≥17 | ≥19.5 | ≥25.5 | ≥30 | |
SiO2 | ≤12 | ≤20 | ≤14.5 | ≤20 | |
Fe2O3 | ≤0.5 | ≤0.5 | ≤0.5 | ≤0.3 | |
Apparent Porosity% | ≤17 | ≤17 | ≤17 | ≤18 | |
Bulk Density g/cm3 | ≥3.15 | ≥2.95 | ≥3.15 | ≥3.10 | |
Cold Crushing Strength Mpa | ≥90 | ≥100 | ≥120 | ≥100 | |
0.1Mpa Refractoriness Under Load T0.6 °C | ≥1650 | ≥1650 | ≥1650 | ≥1650 | |
Permanent Linear Change On Reheating(%)1500°CX2h | ±0.3 | ±0.3 | ±0.3 | ±0.3 | |
20-1000°C Thermal Expansion % (x 10-6) | 0-0.6 | 0-0.6 | 0-0.6 | 0-0.6 | |
Thermal Conductivity(Average 800°C) W/(M.K) | ≤2.19 | ≤2.19 | ≤2.1 | ≤2.1 | |
Pyrometric Cone Equivalent °C SK | 31 | 31 | 31 | 31 |