The bottom pour bricks are dry pressed in the manufactuing, which contributes to the dimension with a very tight tolerance among the joints. We offer fireclay, high alumina and adalusite quality. The alumina ranges from 40% to 70%.
The bottom pour bricks meet the various metallurgical needs (such as ultra low carbon tolerances), steel grades & ingot casting practices of the customers.
Brand Item |
Fire Clay |
Andalusite |
High Alumina |
JZN-40 |
JZH-57 |
JZL-55 |
JZL -65 |
Al 2 O 3 % ≥ |
40 |
57 |
55 |
65 |
Fe2O3 % ≤ |
|
2.0 |
|
|
Refractoriness ( º C )≥ |
1710 |
1790 |
1770 |
1790 |
Apparent Porosity % ≤ |
17~25 |
25 |
24 |
24 |
Bulk Density (g/cm 3 ) ≥ |
|
2.30 |
2.20 |
2.30 |
Permanent linear change % |
1350 º C × 2h +0.1~-0.3 |
|
1450 º C × 2h ± 0.3 |
1500 º C × 2h ± 0.3 |
Application |
Bottom Pour |