Bottom Pouring Brick ,Clay brick,refractory bricks
Characteristics:
1) High-temperature endurable .
2) Good thermal shock and thermal spalling resistance.
3) Good resistance to abrasion and corrosion.
4) Won't pollute the molten steel.
Physical and chemical index:
ITEMS | Fireclay | High Alumina | Andalusite |
JZN-40 | JZN-36 | JZL-55 | JZL-65 | JZL-50 | JZH-57 |
AL2O3 % (≥) | 40 | 36 | 55 | 65 | 50 | 57 |
Fe2O3 % (≤) | | | | | | 2.0 |
Refractoriness °C (≥) | 1720 | 1700 | 1770 | 1790 | 1770 | 1790 |
Permanent linear change | 1350°c x2h 0.1~-0.3 | 1350°c x2h 0.1~-0.3 | 1450°c x2h ±0.3 | 1500°c x2h ±0.3 | | |
Apparent porosity % | 17-15 | 17-25 | ≤24 | ≤24 | ≤26 | ≤26 |
Bulk density g/cm³ (≥) | | | 2.20 | 2.30 | 2.10 | 2.30 |
Application | Model casting |