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Carbon-containing Refractories with Antioxidants in Laboratory and Practical Application

Antioxidants can be recommended for applications with strong abrasion and erosion loads, e.g. in ladle impact pads. Problems with hydration of used Al-containing MgO-C bricks can be avoided by using Al-Mg alloys in distinct ratios. Apparently Al-additives cannot be recommended in slag zones of ladles with deep-vacuum treatment at high temperatures.Although boron containing additives are in industrial use to some extent, their benefit could not be verified in ladle slag line tests, most likely due to formation of low melting phases and subsequent slagging.


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