Classifying – separating – and assorting solids – Fluid suspension – Liquid
Patent
1989-06-02
1991-05-28
Silverman, Stanley
Classifying, separating, and assorting solids
Fluid suspension
Liquid
209 17, 209 5, 210704, 210693, 210694, 210908, 210909, 134 251, 134 40, 208425, 208182, B03D 102, B03D 902, B03D 906, C10G 100
Patent
active
050192450
ABSTRACT:
A method is provided for separating an inert solid substantially inorganic fraction comprising sand or soil from a tarry or oily organic matter in a feedstock. The feedstock may be contaminated soil or tarry waste. The feedstock is combined with pulverized coal and water. The ratio (oil or tar to dry weight of coal) of about 1.0:10 to about 4.0:10 at a temperature in the range of 60.degree.-95.degree. C. The mixture is agitated, the coarse particles are removed, and up to about 0.10% by weight (based on weight of coal) of a frothing agent is added. The mixture is then subjected to flotation, and the froth is removed from the mixture.
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Guerra Carlos R.
Ignasiak Boleslaw L.
Ignasiak Teresa
Pawlak Wanda
Turak Ali A.
Lithgow Thomas M.
Silverman Stanley
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