CLAY ARTICLE AND METHOD FOR PRODUCING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a clay article using a coal ash having simply controlled components and a reduced unburnt carbon content, and to provide a method for producing the same.

SOLUTION: The clay article mainly consists of 100 pts.wt. clay material and 5-70 pts.wt. coal ash reduced in its unburnt carbon content by electrostatic separation comprising frictionally charging particles of a coal ash and separating the particles with electrostatic force.

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