Pengaruh Variasi Konsentrasi CN- Pada Proses Pelindian Bijih Au Terhadap <i>Recovery</i> Au, <i>Gangue</i> Ag, Cu dan Fe

Keywords: cyanide, gangue, leaching, recovery

Abstract

Gold is a precious metal, valuable, and widely found in Indonesia. Gold metal applications can be found in the jewelry, medical, catalyst and high-tech industries. In this study 35 mm of gold ore with a level of 15.6 ppm was extracted using NaCN as a lixiviant. The leaching process parameters included variations in 200, 300, and 400 ppm CN- concentrations, 48 hour leaching time and lixiviant pH in the range of 10-11. To increase the extraction rate was added Pb(NO3)2 catalyst and 15 ppm oxygen. Characterization results with AAS obtained the highest gold recovery was 88.46% Au at CN-300 ppm concentration, leaching time of 8 hours. In addition to gold metal, other metals are also found as gangue such as Ag, Cu and Fe.

Published
2019-08-31
How to Cite
Sutarno, S., Kabarubun, A., Muda, I., & Adisaputro, R. A. (2019). Pengaruh Variasi Konsentrasi CN- Pada Proses Pelindian Bijih Au Terhadap <i>Recovery</i> Au, <i>Gangue</i&gt; Ag, Cu dan Fe. Jurnal Metalurgi Dan Material Indonesia, 2(2), 32-37. Retrieved from http://materialmetalurgi.id/index.php/JMMI/article/view/27
Section
Artikel Ilmiah