MATRIX MATERIAL FOR REFRACTORY MATERIAL, REFRACTORY MATERIAL, AND WASTE INCINERATING/MELTING FURNACE

摘要

PROBLEM TO BE SOLVED: To provide a matrix material for refractory improved in corrosion resistance of a refractory composing a furnace inner wall to the melted slag generated by incinerating and melting waste, and to provide the refractory and a waste incinerating/melting furnace.

SOLUTION: The matrix material for refractory comprises an oxide material composed of a (non)stoichiometric spinel single phase (magnesia-spinel single phase), and contains tetravalent oxides of ≥0.1 mass% and <1 mass% as a solid solution component. The magnesia-spinel single phase includes a spinel crystal only as the crystal phase identified by an X-ray analysis, and the MgO ingredient content in magnesia-alumina binary expression is within the range of ≥7 mass% and ≤39 mass%.

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