Chemistry of inorganic compounds – Treating mixture to obtain metal containing compound – Group iiia metal or beryllium
Patent
1986-01-29
1987-03-24
Doll, John
Chemistry of inorganic compounds
Treating mixture to obtain metal containing compound
Group iiia metal or beryllium
423113, 423122, 423126, 423132, 423139, 423140, 423150, 423493, 423495, 423625, 423632, 423633, 75101R, 75101BE, 75114, 75121, 209 10, 2091725, 209164, 209214, C01F 700, C01G 4900
Patent
active
046524339
ABSTRACT:
The method of the present invention is a novel comprehensive process for maximizing the recovery of valuable mineral values from coal ash. Options may also be included for the production of saleable inorganic chemical by-products. The process employs both physical and chemical extraction techniques that maximize the yield of products while reducing the quantity of waste produced. Valuable minerals and chemicals such as cenospheres (hollow microspheres), carbon, magnetite (Fe.sub.3 O.sub.4), alumina (Al.sub.2 O.sub.3), iron oxide (Fe.sub.2 O.sub.3) and iron chloride (FeCl.sub.3) may be produced. Due to removal of carbon, magnetite, and iron oxide from the coal ash, the processed ash comprises a quality pozzolan.
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Ashworth Robert A.
Berry W. Wes
Padilla Antonio A.
Rodriguez Larry A.
Schmeda Rae A.
Doll John
Florida Progress Corporation
Hellwege James W.
Stoll Robert L.
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