Experimental Study on Acid Leaching of Polymetallic Sulphide Ore
An experiment of acid leaching was performed for the concentrate obtained by flotation pretreatment of a refractory sulphide ore.After leaching at 95 ℃ for 2 h,with nitric acid concentration at 9 mol/L,and liquid-solid ratio of 4∶1,the leaching rates of copper and zinc reach 90.46％and 85.34％,respectively,showing no lead leached out.The leaching process is mainly controlled by both solid film and chemical reaction.
polymetallic sulphide oreacid leachingkineticssolid film controlCuPbZn
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