Plastic and nonmetallic article shaping or treating: processes – Pore forming in situ – Of inorganic materials
Patent
1989-11-30
1993-12-07
Silbaugh, Jan H.
Plastic and nonmetallic article shaping or treating: processes
Pore forming in situ
Of inorganic materials
264DIG39, B29C 6500
Patent
active
052681319
ABSTRACT:
Techniques are described for treatment of ash and paper to eliminate them from the environment and to produce ceramic particles useful as light-weight aggregate (e.g., for use in concrete products). The ash may be that resulting from incineration of rubbish or sewage sludge or it may be fly ash from power plants. The ash and waste paper are mixed with clay and water, shaped into desired shapes and sizes, after which the particles are fired to produce ceramic particles which are lighter in weight than natural aggregates.
REFERENCES:
patent: 2987411 (1961-06-01), Minnick
patent: 3886244 (1975-05-01), Bayer et al.
patent: 4343751 (1982-08-01), Kumar
patent: 4872993 (1989-10-01), Harrison
patent: 4872998 (1989-10-01), Dausman et al.
patent: 4874153 (1989-10-01), Hashimoto et al.
patent: 4882067 (1989-11-01), Johnson
San Diego Tribune, "Bricks from ick", Sep. 26, 1985.
Concrete International, "Concrete aggregate from wastewater sludge" Nov., 1986.
The San Diego Union, "Remarkable breakthrough", Nov. 5, 1986.
Unknown newspaper, "Waste district envisions new ways to handle future sewage", date unknown.
Unknown newspaper, "Waste treatment process wins state approval" date unknown.
Dennis DeConcini letter of Aug. 21, 1985 to Bert V. Elkins.
Press Release "Toxics Technological Breakthrough-Toxic Wastes Rendered Safe!" Oct. 29, 1986 (8 pages).
David J. Leu letter to Bert V. Elkins dated Oct. 26, 1987.
San Diego Tribune "New process pulls toxins from waste" Nov. 1, 1986.
The Daily Californian, "New wastewater plant put to the test" date unknown.
Christian Science Monitor, "Waste-treatment breakthrough" Jan. 14, 1986.
Wall Street Journal, "Toxic Waste Cleanup Provides Fertile Ground for New Firms" Mar. 9, 1987.
Wall Street Journal, "Technology" Oct. 22, 1985.
Edmundson Dean P.
Fiorilla Christopher A.
Silbaugh Jan H.
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