Specifications of fused cast azs refractory bricks for glass furnace melting tanks.
| Typical Chemical Composition | ||||
| Item | Unit | AZS 33 | AZS 41 | |
| Al2O3 | % | 48.9 | 43.9 | |
| ZrO2 | 33 | 41 | ||
| SiO2 | 16 | 13 | ||
| Na2O | 1.3 | 1.1 | ||
| CaO+MgO+K2O+B2O3 | 0.6 | 0.8 | ||
| Fe2O3+TiO2 | 0.2 | 0.2 | ||
| typical Mineral composition | ||||
| vitreous phase | % | 19 | 16 | |
| corundum | 48 | 43 | ||
| baddeleyite | 33 | 41 | ||
| Physical properties: | ||||
| AZS 33 WS | AZS 41 WS | |||
| Minimum Bulk density guranateed | g/c.m 3 | 3.65 | 3.9 | |
| Apparent porosity | Max. | % | 2 | 1.3 |
| Melting glass erosion resisiting speed at static state(normal soda-lime glass, 1500 o C*36h) | Max. | Mm/24h | 1.6 | 1.3 |
| Temprerature of glass leaching | Min. | o C | 1400 | 1400 |
| Bubble separation ratio (normal soda-lime glass, 1300 o C*36h) | Max. | % | 2 | 1 |
| Exudation (Volume %) (1300 o C*36h) | Max. | % | 3 | 3 |
| Unit volume Min. | RC | g/cm 3 | 3.4 | |
| VF | g/cm 3 | 3.7 | 3.92 | |
| Cold crushing strength | Min. | kg/cm2 | 2000 | 2000 |
| refractoriness under load o C | Min. | o C | 1700 |