Classifying – separating – and assorting solids – Fluid suspension – Liquid
Reexamination Certificate
2004-10-26
2008-12-09
Lithgow, Thomas M (Department: 1797)
Classifying, separating, and assorting solids
Fluid suspension
Liquid
C252S061000
Reexamination Certificate
active
07461745
ABSTRACT:
This invention is directed to the use of non-sulfur containing compounds as collectors in the froth flotation of certain mineral sulfide and metallic compounds. These non-sulfur-containing compounds may be from natural sources, such as vegetable oils, or synthesized commercial sources. These non-sulfide collectors can be used singularly, in combinations, and in mixtures with known commercial sulfur containing collectors. These non-sulfur-containing collectors are compatible with common frothers.
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Bauer Kathy
Greene Michael G.
Reber, legal representative Bonnie J.
Young Sharon K.
Young Tom L.
Lithgow Thomas M
Maheras William J.
Martin Michael B.
Nalco Company
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