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.
关键词
多金属硫化矿/酸浸/动力学/固膜控制/铜/铅/锌
Key words
polymetallic sulphide ore/acid leaching/kinetics/solid film control/Cu/Pb/Zn
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