Cleaning and liquid contact with solids – Processes – Work handled in bulk or groups
Patent
1991-11-25
1993-08-10
Morris, Theodore
Cleaning and liquid contact with solids
Processes
Work handled in bulk or groups
134 10, 134 42, 241 21, B08B 308, B08B 700
Patent
active
052345041
ABSTRACT:
A method of removing organic contaminants from contaminated solids in which the solids are comminuted as necessary to resolve them into particles with a top size of typically not more than 15 cm. A slurry of the remaining particles and a contaminant treatment agent which is a mixture of an alcohol and an alkali hydroxide is agitated for a period which is sufficiently long to separate contaminants from the particles. After initial treatment, particles larger than 2 mm can be separated out and processed separately, typically by surficial cleaning. The slurry is thereafter resolved into a predominantly liquid phase containing fines and one or more less contaminated, separately treatable fractions in which solids predominate.
REFERENCES:
patent: 4447541 (1984-05-01), Peterson
patent: 4574013 (1986-03-01), Peterson
Peterson Robert L.
Verbicky, Jr. John W.
El-Arini Zeinab
General Electric Company
GRC Environmental, Inc.
Morris Theodore
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