gold ore cyanide treated
gold ore cyanide treated
Treatment of copper-rich gold ore by cyanide leaching ,
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2015-3-2 · Ammoniacal cyanide leaching has been proposed for the treatment of gold ores that contain reactive copper in appreciable quantities [4,5,8,34] Compared with the traditional cyanide leaching, ammonia cyanide system allows selective leaching of gold from copper-gold ores with remarkably reduced consumption of cyanide It is a rather complex system intimately controlled by the reagent interactions within the system Therefore, based on the preliminary studies [6,12], leaching tests were designed using Box-Behnken design to evaluate main and interaction effects of concentrations of NaCN, NH3 and Pb(NO3)2 on the selective extraction of gold and consumption of NaCN Table 4 shows gold and copper extractions as well as NaCN consumption (kg/t per 1% Au) over 24 h Figure 8 is also presented to illustrate the time-dependent leaching profile for gold ,...