Brief Introduction
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.
Technical Datas
| Item | ZM-17 | ZM-20 (Zirmul) | ZM-25 (Vista) | ZM-30 | ZM-11 | |
| Chemical composition | Al2O3 | ≥70 | ≥59 | ≥57 | ≥47 | ≥72 |
| ZrO2 | ≥17 | ≥19.5 | ≥25.5 | ≥30 | ≥11 | |
| SiO2 | ≤12 | ≤20 | ≤14.5 | ≤20 | ≤12 | |
| Fe2O3 | ≤0.5 | ≤0.5 | ≤0.5 | ≤0.3 | ≤0.5 | |
| Apparent Porosity％ | ≤17 | ≤17 | ≤17 | ≤18 | ≤17 | |
| Bulk Density g/cm3 | ≥3.15 | ≥2.95 | ≥3.15 | ≥3.10 | ≥3.1 | |
| Cold Crushing Strength Mpa | ≥90 | ≥100 | ≥120 | ≥100 | ≥90 | |
| 0.1Mpa Refractoriness Under Load T0.6 ℃ | ≥1650 | ≥1650 | ≥1650 | ≥1650 | ≥1630 | |
| 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 | ≤ 2.1 | ≤ 2.1 | ≤ 2.19 | |
| Pyrometric Cone Equivalent ℃ SK | 31 | 31 | 31 | 31 | 31 | |
Application
Zircon mullite bricks are mainly used in large-scale glass kilns melting tanks, kinescope kilns, regenerator partition wall bricks, and chemical and metallurgical industrial kilns, also can be used in new types of cast steel slides, sizing outlets for continuous casting packages, and key points for long nozzles and glass furnaces.