Classifying – separating – and assorting solids – Fluid suspension – Liquid
Reexamination Certificate
2007-05-22
2007-05-22
Lithgow, Thomas M. (Department: 1724)
Classifying, separating, and assorting solids
Fluid suspension
Liquid
C423S026000, C423S027000, C423S029000, C423S101000, C423S140000
Reexamination Certificate
active
10816346
ABSTRACT:
A method of flotation processing ores and other mineral materials containing soluble nonferrous base metal and sulfide minerals involves dissolving the soluble nonferrous base metal and precipitating the soluble nonferrous base metal in the form of a floatable precipitate that is collected as part of a sulfide concentrate. The use of an oxygen-deficient flotation gas, such as nitrogen gas, promotes the precipitation of the floatable precipitate. A method for removing dissolved nonferrous base metal from solution involves contacting the solution with a particulate containing sulfide minerals under conditions promoting precipitation of the nonferrous base metal onto the sulfide mineral.
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Gathje John C.
Simmons Gary L.
Lithgow Thomas M.
Marsh & Fischmann & Breyfogle LLP
Newmont USA Limited
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