Method for efficient recovery of copper from acid leaching residue of sulfation-roasted chalcocite-type copper concentrate

Abstract

20 26 20 01 78 12 J an 2 02 6 A B S T R A C T 2 0 2 6 2 0 0 1 7 8 1 2 J a n 2 0 2 6 1 / 1 Figure Acid leaching residue of sulfation-roasted chalcocite-type copper concentrate -38 µm accounts for 90% 2 min X Sodium carbonate 300 g / t 2 min X Sodium sulfide 1500 g / t 2 min X Ammonium dibutyl dithiophosphate 100 g / t + Amyl xanthate 350 g / t 2 min X MIBC 40 g / t Flotation rough Flotation roughing concentrate 5 min Flotation tailings Flotation cleaning 1 Flotation 5 min middlings II Flotation Chemical dissociation conditions: cleaning 2 Flotation Sulfuric acid dosage: 60 kg / t 4 min middlings I Temperature: 95 °C Time: 1h Liquid-solid ratio: 4:1 Magnetic roughing 1 Flotation Magnetic separation concentrate concentrate I 0.14T Magnetic separation Magnetic roughing 2 concentrate II Magnetic separation tailings 0.14T Thickening Chemical dissociation Magnetic separation concentrate Dissociation solution Dissociation residue 20 26 20 01 78 12 J an 2 02 6 1 2 J a n 2 0 2 6 2 m i n 2 0 2 6 2 0 0 1 7 8 2 m i n c o n c e n t r a t e T i m e : 1 h c o n c e n t r a t e 0 . 1 4 T 0 . 1 4 T

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