The monolithic refractory body containing rare earth metal and lined with them and the kiln furnace

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PROBLEM TO BE SOLVED : To obtain a monolithic refractory showing high hot-strength and an excellent durability. SOLUTION : The rare earth metal-containing monolithic refractory comprises, by mass, 50-99% Al2O3, 0.005-20% at least one rare earth metal oxide and the balance being MgO and other unavoidable impurities. Alternatively, the refractory comprises, by mass, 50-99% MgO, 0.005-20% at least one rare earth metal oxide and the balance being Al2O3and other unavoidable impurities. COPYRIGHT : (C)2004, JPO