Complaint
| Al2O3+SiO2 | Al2O3 | Fe2O3 | MgO | K2O+Na2O +CaO | Others |
| > 93% | 45-50% | <1% | <0.5% | <4% | <1% |
| Item | Value |
| Water absorption (%) | <2 |
| Bulk density (g/cm3) | 1.4-1.5 |
| Specific gravity (g/cm3) | 2.4-2.6 |
| Free volume (%) | 40 |
| Operation temp.(max) (ºC) | 1200 |
| Moh's hardness (scale) | >7 |
| Acid resistance (%) | >99.6 |
| Alkali resistance (%) | >85 |
| Size | Crush strength | |
| Kgf/particle | KN/particle | |
| 1/8''(3mm) | >25 | >0.25 |
| 1/4''(6mm) | >60 | >0.60 |
| 3/8''(10mm) | >80 | >0.80 |
| 1/2''(13mm) | >230 | >2.30 |
| 3/4''(19mm) | >500 | >5.0 |
| 1''(25mm) | >700 | >7.0 |
| 1-1/2''(38mm) | >1000 | >10.0 |
| 2''(50mm) | >1300 | >13.0 |
| Size and Tolerance (mm) | ||||
| Size | 3/6/9 | 9/13 | 19/25/38 | 50 |
| Tolerance | ±1.0 | ±1.5 | ±2 | ±2.5 |
| Item | Value |
| Water absorption (%) | <4 |
| Packing density (g/cm3) | 1.9-2.2 |
| Specific gravity (g/cm3) | >3.6 |
| Operation temp.(max) (ºC) | 1650 |
| Apparent porosity (%) | <1 |
| Moh's hardness (scale) | >9 |
| Acid resistance (%) | >99.6 |
| Alkali resistance (%) | >85 |
