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| THE FLOTATION OF COPPER OXIDIZED ORES WITH MIXED REAGENT OF HYDROXAMATE AND XANTHATE |
| ZHOU Wetzhi Guangzhou Research Institute of Non-Ferrous Metals |
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Cite this article:
ZHOU Wetzhi Guangzhou Research Institute of Non-Ferrous Metals. THE FLOTATION OF COPPER OXIDIZED ORES WITH MIXED REAGENT OF HYDROXAMATE AND XANTHATE. Acta Metall Sin, 1985, 21(3): 87-93.
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Abstract The mixed reagent of hydroxamate and xanthate,instead of xanthate alone,has been developed in treating copper oxidized ores of skarn type with reducedconsumption and increased copper recovery.The newer progress in copper oxidizedores flotation has been made by the reasonable usage of the mixed reagent.Testresults indicate that under the synergistic action of combined regulator,the copperconcentrate of 26%Cu grade can be produced from the ore containing malachiteand pseudomalachite with 80% recovery.When this hydroxamate-xanthate collectorsystem used to float another highly siliceous pelitic copper oxide ore,a copperconcentrate of 25% Cu can be obtained with recovery of 85% for free copper oxide.The proposed flowsheet is most useful to the efficiency of hydroxamate-xanthatein flotation of a siliceous Cu-Fe intergrowth oxidized ore containing Au and Ag.With this process not only a high quality copper oxidized concentrate of 36%Cucan be produced,but also a Ag-rich Au concentrate containing 340 g/t Ag and108 g/t Au can be floated selectively.And it benefits the recovery of Fe concen-trate from copper railings.
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Received: 18 March 1985
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