MAGNESIA-BASED REFRACTORY MATERIAL

摘要

This magnesia-based refractory material is obtained by firing a mixture comprising 60 to 90 wt.% of magnesia, 5 to 20 wt.% of zirconia and 5 to 20 wt.% of alumina, and has excellent corrosion resistance and spalling resistance and satisfactory durability. In addition, it is preferable to add at least one material selected from among 3 to 10 wt.% of titania, 0.1 to 3 wt.% of nickel oxide, 0.1 to 3 wt.% of cobalt oxide, 0.3 to 5 wt.% of manganese oxide and 0.5 to 3 wt.% of yttrium oxide to the mixture.