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Manufacture of ceramic tiles from fly ash

United States Patent

5,935,885
August 10, 1999
View the Complete Patent at the US Patent & Trademark Office
The present invention relates to a process for forming glass-ceramic tiles. Fly ash containing organic material, metal contaminants, and glass forming materials is oxidized under conditions effective to combust the organic material and partially oxidize the metallic contaminants and the glass forming materials. The oxidized glass forming materials are vitrified to form a glass melt. This glass melt is then formed into tiles containing metallic contaminants.
Hnat; James G. (Collegeville, PA), Mathur; Akshay (Tampa, FL), Simpson; James C. (Perkiomenville, PA)
Vortec Corporation (Collegeville, PA)
08/ 954,422
October 20, 1997
This invention was made with Government support under Contract No. DE-FG02-93ER81555 awarded by the Department of Energy. The Government has certain rights in this invention.