B - Operations – Transporting – 03 – D
Patent
B - Operations, Transporting
03
D
361/4
B03D 1/02 (2006.01) B03D 1/008 (2006.01) B03D 1/01 (2006.01)
Patent
CA 1162663
ABSTRACT OF THE DISCLOSURE A process for the separation of copper and iron ores from molybdenite where a mixture of copper and iron ores containing molybdenite is attritioned to a pulp containing approximately 55% solids(50 to 60% solids), a surfactant is added comprising one or more alkyl based esters of sodium and/or calcium sulphosuccinic and sulphosuccinamic acid is conditioned to a solids content of about 20 to 25% at a pH of between about 6.0 and 8.5, as desired sodium ferrocyanide and/or foaming agents and petroleum are added. The treated pulp is then passed to a flotation stage which separates the copper and iron ores from the molybdenite and the molybdenite is finally concentrated in a cleaning stage where tailings from the cleaning stage are recycled to the flotation stage. Sodium ferrocyanide may be added in the cleaning stage for improving the yield of molybdenite and a sedimentation stage for the molybdenite may be used following the flotation step.
364495
Borden Ladner Gervais Llp
Prieto Juan O.
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