Leaching of gold ore using creatine monohydrate
DOI:
https://doi.org/10.17159/Abstract
In this research leaching of gold ore using creatine monohydrate has been studied. The results show that at temperature 75 and pH 1.5 the gold dissolution increases from 88 to 89% with increasing creatine concentration from 50 to 100 g/t. Further increase in creatine concentration showed a negative effect on the gold dissolution. The temperature was an effective parameter, the gold dissolution increased from 47% to 87% (40% by increasing temperature from 25 to 55. The gold dissolution was very sensitive to the leaching pH, the gold dissolution increased from 61% to 89% by increasing pH from 10 to 11.5. Under the optimum conditions; solid content of 30%, pH 11.5, creatine concentration 100 g/t, temperature 75 , and H2O2 2%, about 90% of gold can be dissolved from the ore after 24 h. A comparison between creatine leaching and cyanide leaching shows that the 90% gold dissolution is achieved at a cyanide concentration of 300 g/t, which is three times higher than the creatine concentration under optimal conditions.
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