METHOD FOR PRODUCING CERAMIC HONEYCOMB STRUCTURE, AND CORDIERITE RAW MATERIAL

摘要

PROBLEM TO BE SOLVED: To provide a method for producing a ceramic honeycomb structure used for a ceramic filter having a low pressure drop property and strength durable under mechanical vibration, shock, or thermal shock in use and to provide a powdery cordierite raw material therefor.

SOLUTION: The ceramic honeycomb structure is produced from a raw material mainly comprising a cordierite raw material by extruding the raw material and firing the resultant molded product. The cordierite raw material contains 10-20 mass% silica source component except kaolin and talc. The silica source component contains more than 1 mass% but 10 mass% or less powder whose particle diameter is 75-250 μm.

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