Description of Zircon Mullite Brick
Zircon Mullite Brick selected high quality mullite sand and zircon powder as its main raw material. Molded by high pressure and sintered by high temperature , the zircon-mullite brick has such advantages as high bulk density, high strength, good thermal shock resistance, high temperature erosion resistance and good slag resistance.
Technique Data of Zircon Mullite Brick
| 項目 | ZM-11 | ZM-17 | ZM-20 (Zirmul) | ZM-25 (Vista) | 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 | |
| 0.1Mpa 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 | |
Application of Zircon Mullite Brick
1. Glass industry: large glass kiln melting pool, heat storage chamber partition bricks; 2. Metallurgical industry: sliding bricks of steelmaking heating furnace, steel tapping platform bricks of stepped heating furnace; 3. Chemical industry: furnaces, waste incinerators, etc.
