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Hydrometallurgical processing routes for copper
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acid leaching aluminium amine ammonia ammonium aqueous blister copper calcine carbonate Cardwell P.H. cathode chalcopyrite chloride solution cobalt containing converting copper concentrates cupric chloride Deepsea Ventures deposits direct leaching dissolved electricity electrowinning elemental sulphur energy Extractive Metallurgy feed ferric chloride ferrous flotation flowsheet furnace goethite halide hematite hydrogen hydrolysis hydrometallurgical hydrometallurgical processing impurities ion exchange iron oxides jarosite Jarosite process Kennecott leach liquor leach residues leach solution leaching process leaching reactors LIX 64N manganese dioxide manganese nodules material matte methods neutral leach neutralisation nickel operation organic phase oxidised oxygen phosphoric acid plant precipitation present pressure leaching problem produced purification pyrite raffinate raw nodules reaction reagents recover recovery recycled reduced removed resin return electrolyte route separation shown in Fig silica slag slurry smelting sodium sodium chlorate solid solvent extraction spent electrolyte step sulphate solution sulphuric acid temperature treatment U.S. Patent U(IV zinc sulphide