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Tundish dispersion type magnesia air curtain retaining wall

Dispersion type magnesia gas curtain retaining wall of tundish adopts magnesia as main raw material, adds admixture, adopts press forming, and is fired at 1500 ℃.

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Refractory materials for the iron and steel industry

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Dispersion type magnesia gas curtain retaining wall of tundish adopts magnesia as main raw material, adds admixture, adopts press forming, and is fired at 1500 ℃.

Its structural characteristics are: through the appropriate particle gradation and the role of admixtures, through the formation of more through pores after high-temperature firing, thus forming a dispersion type of ventilation. When in use, the gas passes through the gas curtain retaining wall to form a bubble curtain, which can increase the floating chance of impurities, reduce the dead volume of the steel liquid in the tundish, and significantly reduce the tiny inclusions in the steel liquid.

Brand Index	HT-ZB2
MgO(%)≥	90
Al₂O₃ (%)≤	3
Compressive strength C · C · S(MPa)≥	15
Apparent porosity A · P(%)≥	20
Bulk density B · D(g/cm³)≤	2.85
Bend strength M · 0 · R(MPa)≥	5