Compositions: coating or plastic – Coating or plastic compositions – Inorganic settable ingredient containing
Patent
1993-10-21
1994-11-08
Green, Anthony
Compositions: coating or plastic
Coating or plastic compositions
Inorganic settable ingredient containing
106697, 106707, 106708, 106709, 106710, 106DIG1, 588252, 588256, 588257, 264333, C04B 712, C04B 724, C04B 713
Patent
active
053623193
ABSTRACT:
The invention provides a novel, environmentally stabilized formed product and to a method of producing a hard, dry, e.g., agglomerated or formed, environmentally stabilized product useful as a construction material, e.g., as pellets, panels, bricks, etc. comprising: a) ash such as RDF or coal ash (typically stack scrubber solids or bottom ash obtained from the burning of coal), b) an oxidizer and c) water. The amount of water present is selected to render the product plastic so that it can be molded to the desired shape. The oxidizer is provided in a sufficient amount to oxidize unstable compounds and to convert potassium, calcium or magnesium bisulfite to the sulfate form. Following the addition of the oxidizer, the admixture is exposed to electromagnetic energy, preferably ultraviolet light, to help drive the oxidation reaction to completion. In an optional form of the invention, portland cement, plaster of paris or a minor amount of a cation exchange resin or Zeolite clay is added to the mixture to sequester heavy metals. The admixture is formed or molded into pieces or bodies of the desired shape, such as blocks, slabs, pellets or agglomerates. The resulting pieces harden to form an environmentally stable product at room temperature so that oven baking of the end product is not required.
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Journal Article: Tokyo Kogyo Shikensho Kokoku (Tkshai), vol. 63(1), pp. 1-50, 1968.
Green Anthony
Harmon James V.
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