Classifying – separating – and assorting solids – Fluid suspension – Liquid
Reexamination Certificate
2006-02-28
2006-02-28
Lithgow, Thomas M. (Department: 1724)
Classifying, separating, and assorting solids
Fluid suspension
Liquid
C209S167000
Reexamination Certificate
active
07004326
ABSTRACT:
A mineral separation process includes wet-grinding the ore to liberation of minerals, oxidizing the slurry using air, hydrogen peroxide or other oxidants and floating the valuable minerals at a pH between about 9.0 and 10.0 with a xanthate as collector, and a combination of a polyamine and a sulfur containing species as depressants for arsenide minerals. This depressant suite effectively depresses the flotation of arsenide minerals with no effect on the flotation of the valuable minerals.
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Dai Zongfu
Garritsen Julie-Ann Arlene
Wells Peter Frederic
Xu Manqiu
Inco Limited
Lithgow Thomas M.
Steen Edward A.
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