Zircon Brick
Zircon Mullite Brick
Apparent Porosity (%) ≤8
Bulk Density (g/cm3) ≥4.15
Cold Crushing Strength (Mpa) ≥200
0.2Mpa Refractoriness Under Load T0.6 ℃ ≥1680
PRODUCT DESCRIPTION
Introduction:
Dense zircon blocks have compact crystal structure, high bulk density, high temperature resistance, high mechanical strength at room temperature and high temperature, high wear resistance, good thermal shock stability, low reheat shrinkage and high temperature creep, and has extremely high chemical stability and resistance Alkaline media corrosion and other characteristics.
Features:
l Good compactness
l High Purity
l Corundum Phrase 70%, Baddeleylite content 19%
l Excellent thermal shock resistance
l Good spalling resistance
Applications:
It can be used in severely corroded parts such as crown of glass melting furnace and port, tuck stones brick, peephole brick, burner brick, channel brick, and doghouse arch. It’s the preferred material for opal glass and high borosilicate glass furnaces.
TECHNIQUE DATA
| Item | ZM-11 | ZM-17 | ZM-20 | ZM-25 | ZM-30 | |
| Chemical Composition% | Al2O3 | ≥72 | ≥70 | ≥59 | ≥57 | ≥47 |
| ZrO2 | ≥11 | ≥17 | ≥19.5 | ≥25.5 | ≥30 | |
| SiO2 | ≤12 | ≤12 | ≤20 | ≤14.5 | ≤20 | |
| Fe2O3 | ≤0.5 | ≤0.5 | ≤0.5 | ≤0.5 | ≤0.3 | |
| Apparent Porosity％ | ≤17 | ≤17 | ≤17 | ≤17 | ≤18 | |
| Bulk Density g/cm3 | ≥3.1 | ≥3.15 | ≥2.95 | ≥3.15 | ≥3.10 | |
| Cold Crushing Strength Mpa | ≥90 | ≥90 | ≥100 | ≥120 | ≥100 | |
| 0.2Mpa Refractoriness Under Load T0.6 ℃ | ≥1630 | ≥1650 | ≥1650 | ≥1650 | ≥1650 | |
| Permanent Linear Change On Reheating(%)1500℃X2h | ±0.3 | ±0.3 | ±0.3 | ±0.3 | ±0.3 | |
| 20-1000℃ Thermal Expansion % (x 10-6) | 0-0.6 | 0-0.6 | 0-0.6 | 0-0.6 | 0-0.6 | |
| Thermal Conductivity (Average800℃) W / (M.K) | ≤2.19 | ≤2.19 | ≤2.19 | ≤2.1 | ≤2.1 | |
| Pyrometric Cone Equivalent ℃ SK | 31 | 31 | 31 | 31 | 31 | |
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