Classifying – separating – and assorting solids – Fluid suspension – Liquid
Reexamination Certificate
2005-07-12
2005-07-12
Lithgow, Thomas M. (Department: 1724)
Classifying, separating, and assorting solids
Fluid suspension
Liquid
C209S166000, C209S012100, C209S017000, C209S426000, C209S427000, C210S703000, C210S221200, C134S025100, C134S042000
Reexamination Certificate
active
06915908
ABSTRACT:
A method for decontaminating soil containing inorganic contaminants having a degree of liberation of at least 60%, comprising the steps of removing from a coarse fraction at least a portion of inorganic contaminants in particulate form contained therein with a jig to produce a treated coarse fraction, removing from an intermediate fraction at least a portion of inorganic contaminants in particulate form contained therein with a separator selected from the group consisting of a spiral and a classifier to produce a treated intermediate fraction, removing from a fine fraction at least a portion of inorganic contaminants in particulate form contained therein with a separator selected from the group consisting of a flotation cell and a multi-gravity separator to produce a treated fine fraction, whereby the combined treated coarse, intermediate and fine fractions are impoverished in inorganic contaminants.
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BCF LLP
Institut National de la Recherche Scientifique
Kosie Ronald S.
Lithgow Thomas M.
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