The mineral carbon paste electrode was prepared by using the refractory gold ore powder from Guizhou province as raw material,and the electrochemical study was carried out in a gold leaching system with NaClO solution as the leaching agent under the conditions of different temperatures,different concentrations and different pH values. The results show that the optimal leaching conditions are as follows:0.7～0.9 mol/LNaClO solution concentration,leaching temperature at 30～35 ℃ and pH=13.5. Typically,an average leaching rate of gold reached 93.38％ when the leaching was conducted at 30 ℃ for 3 hours in 0.9 mol/L NaClO solution with a pH value of 13.5.
关键词
次氯酸钠浸金/电化学/浸出率/难浸金矿
Key words
sodium hypochlorite leaching of gold/electrochemistry/leaching rate/refractory gold ore
维普
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