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1997•Journal of Guangdong Non-ferrous MetalsRequires access

STUDY ON PRETREATMENT-GRINDING FLOTATION OF LOW GRADE COPPER OXIDE ORE IN DAYE TONGLUSHAN MINE

Luo Chuan-sheng

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Abstract

Since the difficult problem of the mineral processing of low grade (Cucontent1 %) copper oxide ore in Tonglushan Mine, which has been set up nearly for 40years, has not been solved, large amount of ores are piled or discarded. In this paper, thetechnological process of crude ore pretreatment-grinding flotation is studied. In the reagentregime, sodium sulfide, modified xanthate (KD4 ) and composite oil (W-2) are usedtogether. Good-quality copper concentrate can be floated out from the ore, which contains0. 96% Cu (the oxidation rate of Cu is 98% and the occupation rate of unseparable Cu is28% ), 0.75g/t Au (inclusion gold 23 % ). The grades of the concentrate are 33. 15% Cu and24. 96g/t Au with the recovery rate of Cu 64. 53% and of Au 63. 11% (to the crude ore),which creates good conditions for further recovering Fe concentrate comprehensively from Cutailings.

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What this paper is about

Since the difficult problem of the mineral processing of low grade (Cucontent1 %) copper oxide ore in Tonglushan Mine, which has been set up nearly for 40years, has not been solved, large amount of ores are piled or discarded. In this paper, thetechnological process of crude ore pretreatment-grinding flotation is studied. In the reagentregime, sodium sulfide, modified xanthate (KD4 ) and composite oil (W-2) are usedtogether. Good-quality copper concentrate can be floated out from the ore, which contains0. 96% Cu (the oxidation rate of Cu is 98% and the occupation rate of unseparable Cu is28% ), 0.75g/t Au (inclusion gold 23 % ). The grades of the concentrate are 33. 15% Cu and24. 96g/t Au with the recovery rate of Cu 64. 53% and of Au 63. 11% (to the crude ore),which creates good conditions for further recovering Fe concentrate comprehensively from Cutailings.

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Available abstract

Since the difficult problem of the mineral processing of low grade (Cucontent1 %) copper oxide ore in Tonglushan Mine, which has been set up nearly for 40years, has not been solved, large amount of ores are piled or discarded. In this paper, thetechnological process of crude ore pretreatment-grinding flotation is studied. In the reagentregime, sodium sulfide, modified xanthate (KD4 ) and composite oil (W-2) are usedtogether. Good-quality copper concentrate can be floated out from the ore, which contains0. 96% Cu (the oxidation rate of Cu is 98% and the occupation rate of unseparable Cu is28% ), 0.75g/t Au (inclusion gold 23 % ). The grades of the concentrate are 33. 15% Cu and24. 96g/t Au with the recovery rate of Cu 64. 53% and of Au 63. 11% (to the crude ore),which creates good conditions for further recovering Fe concentrate comprehensively from Cutailings.

Key concepts: Xanthate, Metallurgy, Copper extraction techniques, Mineral processing, Copper, Grinding, Sulfide, Froth flotation

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