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Product description of high alumina runner brick
Refractory runner brick refers to the hollow refractory brick laid in the groove of the slab for ingot to connect the steel dividing brick and the ingot mold. High alumina runner bricks are generally rectangular hollow clay bricks with various specifications. In order to reduce the resistance during the flow of molten steel and prevent steel leakage, it is required that the inner holes of flowing steel bricks are smooth, the shape is regular, and the joints are tight.
Features of high alumina runner brick
Scour resistance
No deformation
No shedding
Applications of high alumina runner brick
High alumina runner bricks are widely used in the flat casting of various steel grades (including stainless steel and alloy steel). The product has high fire resistance, good crack resistance and strong corrosion resistance. The appearance is regular, the flow path is smooth, the size is accurate, and the variety is complete. Ladle lining bricks, arc lining bricks, fired and unburned plug bricks, casting mouth bricks, seat bricks and sleeve bricks for production of steel casting in ladle.
Parameters of high alumina runner brick
| Modle | FC-36 | FC-40 | HL-48 | HL-55 | HL-65 | HL-70 |
| Al2O3 % | >36 | >40 | >48 | >55 | >65 | >70 |
| Fe2O3 % | <2.0 | <1.8 | <2.0 | <2.0 | <2.0 | <1.5 |
| Alkalinity % | <1.8 | <1.8 | <1.8 | <1.8 | <1.8 | <1.8 |
| Apparent porosity % | 17-25 | <22 | <25 | <26 | <26 | <25 |
| Bulk Density g/cm3 | >2.1 | >2.18 | >2.2 | >2.25 | >2.3 | >2.35 |
| Refractoriness ℃ | >1700 | >1710 | >1750 | >1770 | >1790 | >1790 |