Additional of NaCl on Chloride Leaching of Gold Ore from Indonesian Artisanal Mining

S. Harjanto, F. W. Pratama, A. Lazuardiyani, M. Taris, M. Y. Salam

Research output: Contribution to journalConference articleResearchpeer-review

Abstract

An alternative method of amalgamation to extract gold in small-scale industries was investigated by means of chloride-ion-based solution leaching. In this study, the addition of NaCl and optimization of chloride-ion-based leaching of gold was analyzed by using the Taguchi Method. Indonesia gold ore processed from artisanal mining was utilized in this study. The solutions of HCl (11.6 mol/L)-H 2 O 2 (1 vol%) were used as lixiviants. The effects of temperature, pulp ratio, leaching time, and NaCl addition were examined. The optimum leaching condition was predicted using a signal to noise ratio and the influences of given input parameters were studied through the analysis of variance. More than 78% extraction of gold was achieved after 3 hours using pulp ratio of 0.5, a temperature of 75 °C, and the addition of 0.05 M of NaCl.

Original languageEnglish
Article number012032
JournalIOP Conference Series: Materials Science and Engineering
Volume515
Issue number1
DOIs
Publication statusPublished - 1 Jan 2019
EventInternational Conference on Condensed Matters and Advanced Materials 2018, IC2MAM 2018 - Malang, Indonesia
Duration: 5 Sep 2018 → …

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Gold
Ores
Leaching
Pulp
Chlorides
Ions
Taguchi methods
Analysis of variance (ANOVA)
Signal to noise ratio
Temperature
gold chloride
Industry

Cite this

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title = "Additional of NaCl on Chloride Leaching of Gold Ore from Indonesian Artisanal Mining",
abstract = "An alternative method of amalgamation to extract gold in small-scale industries was investigated by means of chloride-ion-based solution leaching. In this study, the addition of NaCl and optimization of chloride-ion-based leaching of gold was analyzed by using the Taguchi Method. Indonesia gold ore processed from artisanal mining was utilized in this study. The solutions of HCl (11.6 mol/L)-H 2 O 2 (1 vol{\%}) were used as lixiviants. The effects of temperature, pulp ratio, leaching time, and NaCl addition were examined. The optimum leaching condition was predicted using a signal to noise ratio and the influences of given input parameters were studied through the analysis of variance. More than 78{\%} extraction of gold was achieved after 3 hours using pulp ratio of 0.5, a temperature of 75 °C, and the addition of 0.05 M of NaCl.",
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Additional of NaCl on Chloride Leaching of Gold Ore from Indonesian Artisanal Mining. / Harjanto, S.; Pratama, F. W.; Lazuardiyani, A.; Taris, M.; Salam, M. Y.

In: IOP Conference Series: Materials Science and Engineering, Vol. 515, No. 1, 012032, 01.01.2019.

Research output: Contribution to journalConference articleResearchpeer-review

TY - JOUR

T1 - Additional of NaCl on Chloride Leaching of Gold Ore from Indonesian Artisanal Mining

AU - Harjanto, S.

AU - Pratama, F. W.

AU - Lazuardiyani, A.

AU - Taris, M.

AU - Salam, M. Y.

PY - 2019/1/1

Y1 - 2019/1/1

N2 - An alternative method of amalgamation to extract gold in small-scale industries was investigated by means of chloride-ion-based solution leaching. In this study, the addition of NaCl and optimization of chloride-ion-based leaching of gold was analyzed by using the Taguchi Method. Indonesia gold ore processed from artisanal mining was utilized in this study. The solutions of HCl (11.6 mol/L)-H 2 O 2 (1 vol%) were used as lixiviants. The effects of temperature, pulp ratio, leaching time, and NaCl addition were examined. The optimum leaching condition was predicted using a signal to noise ratio and the influences of given input parameters were studied through the analysis of variance. More than 78% extraction of gold was achieved after 3 hours using pulp ratio of 0.5, a temperature of 75 °C, and the addition of 0.05 M of NaCl.

AB - An alternative method of amalgamation to extract gold in small-scale industries was investigated by means of chloride-ion-based solution leaching. In this study, the addition of NaCl and optimization of chloride-ion-based leaching of gold was analyzed by using the Taguchi Method. Indonesia gold ore processed from artisanal mining was utilized in this study. The solutions of HCl (11.6 mol/L)-H 2 O 2 (1 vol%) were used as lixiviants. The effects of temperature, pulp ratio, leaching time, and NaCl addition were examined. The optimum leaching condition was predicted using a signal to noise ratio and the influences of given input parameters were studied through the analysis of variance. More than 78% extraction of gold was achieved after 3 hours using pulp ratio of 0.5, a temperature of 75 °C, and the addition of 0.05 M of NaCl.

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