Al2O3: 55-78%
Apparent Porosity: 21-28%
Long service life
High refractoriness
Strong corrosion resistance
Construction is convenient
High Alumina Runner Brick
Description
High alumina runner brick is the hollow fire brick connecting king brick and ingot mold in the groove of bottom plate for ingot casting.
In general, it is a kind of hollow fire clay brick of various sizes of rectangles. It is required to be smooth in inner hole, neat in appearance and tight in seam to reduce the resistance during the flow process of liquid steel and prevent from leaking.
Features
High refractoriness.
Good crack resistance.
Strong corrosion resistance.
Specification
| 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 |
Application
High Alumina Runner Brick products have high refractoriness, good cracking resistance and strong erosion resistance. Regular shape, smooth flow, accurate size, complete varieties. Production of ladle lining bricks, curved lining bricks, fired and unfired plug bricks, sprue bricks, seat bricks and sleeve bricks of cast steel in ladles.
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