| 摘要 |
PURPOSE: A magnesia refractory raw material for a cement rotary kiln is provided to offer excellent spalling resistance, alkali resistance, and coating adhesiveness by property controlling the porosity of magnesia and the content of Fe2O3. CONSTITUTION: A magnesia refractory raw material for a cement rotary kiln contains 1-8wt% of Fe2O3, and the apparent porosity of the material is 3-10%. The magnesia refractory raw material containing Fe2O3 for the cement rotary kiln contains the followings: more than 65wt% of magnesia with 1-8wt% of Fe2O3; and less than 35wt% of more than one selected from regular magnesia, spinel, or zirconia. [Reference numerals] (AA) Invention example 1; (BB) Invention example 2; (CC) Invention example 3; (DD) Comparative example 1; (EE) Comparative example 2 |
