Sillimanite bricks for blast furnace
Al₂O₃ (%)≥60～65; SiO₂ (%)≤32～37; Fe₂O₃ (%)≤0.5～1Apparent porosity (%)≤18～19Cold crushing strength (MPa)≥80
Application:
Sillimanite bricks as blast furnace refractories are mainly used for linings in the upper and middle part of shaft, because of good wear resistance and anti-stripping capacity.
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