Magnetic separation process for beneficiating ores

Details Magnetic separation process for beneficiating ores Magnetic separation process for beneficiating ores

C - Chemistry, Metallurgy

22

B

53/368

C22B 5/00 (2006.01)

Patent

CA 1138651

Abstract MAGNETIC SEPARATION PROCESS FOR BENEFICIATING SULFIDE ORES A process for beneficiating one or more mineral values of sulfide and oxide ores by treating the ore with a metal- containing compound under conditions such as to selectively enhance the magnetic susceptibility of the mineral values to the exclusion of the gangue in order to permit a separation between the values and gangue, and improvements comprising: pretreating the ore by heating it to a temperature of at least about 80°C for at least about 0.1 hours; removing any elemental sulfur present in the ore by preheating or solvent extraction prior to treating the ore with the metal-containing compound; cotreating the ore with a reducing gas while preheating, or while treating with the metal-containing compound.

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