Zirconium Corundum ramming mass introduce:
Zirconium Corundum ramming mass introduce is composed of fused zirconium corundum granule by oxidation method and a small amount of additives. It has the characteristic of atmospheric
temperature hardening, high strength at high temperature, low thermal expansion and shrinkage, and strong resistance to glass liquid erosion. It is the ideal material for sealing layer at bottom of
glass furnace molten pool.
The Composition of Zirconium Corundum ramming mass:
| Item | Index | ||
| AZSD-5 | AZSD-0.6 | AZSD-0.4 | |
| Maximum Grain Size mm | 5 | 0.6 | 0.4 |
| ZrO2 % | ≥30 | ||
| Al2O3 % | ≥48 | ||
| SiO2 % | ≤20 | ||
| Bulk Density g/cm3 | 3.2 | 3.1 | 3.1 |
| Phase Composition | α-Al2O3、Bshiaddeleyite、Quartz、Glass phase | ||
| Apparent Porosity % | ≤20 | ||
| Compression Strength MPa 1400℃×3h | ≥25 | ||
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