Chemistry of inorganic compounds – Treating mixture to obtain metal containing compound – Group iva metal
Patent
1993-08-11
1995-11-14
Bos, Steven
Chemistry of inorganic compounds
Treating mixture to obtain metal containing compound
Group iva metal
75725, C22B 1100
Patent
active
054664268
ABSTRACT:
The invention is a process and an apparatus for removing metal contamination from soil. In the method, the soil is treated to produce soil with a small particle size. The particulate soil is then separated into a coarse fraction and a fine fraction. The coarse fraction and the fine fraction are contacted with a leach solution in separate contacting zones to remove the metal contamination from the soil, the metal is removed from the leach solution and the leach solution recycled to the leaching zones.
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Sauerbeck, et al, "Soil-Chemical Evaluation of Different . . . Soils" Comm. Eur. Communities, (Rep.) EUR 1983, no month, EUR 8022, Environ. Eff. Org. Inorg. Contam. Sewage Sludge, 1983, pp. 147-160.
Chemiker-Zeitung, 106, Jahrgang (1982); pp. 289-292 (abstract).
Fast John
Fristad William E.
Mattison Phillip L.
Narum Jeffrey L.
Virnig Michael J.
Bos Steven
Cognis, Inc.
Jaeschke Wayne C.
Ortiz Daniel S.
Szoke Ernest G.
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