Process for the manufacture of ceramic coating materials, characterized in that it disperses at least one oxide of a metal comprised within the long periods of groups IV and higher of the periodic table of elements, in an intimate mixture formed by an ash or powder of a carbonaceous material and a kaolin or refractory clay, forming a baking composition which is subsequently agglomerated in the form of the articles that it is desired to obtain and subjected to cooking at a temperature such that at least partial melting of its products takes place. particles, and the subsequent joining thereof to form a rigid structure. (Machine-translation by Google Translate, not legally binding)
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