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

被引：5
|
作者：
Harjanto, S. [1 ]
Pratama, F. W. [1 ]
Lazuardiyani, A. [1 ]
Taris, M. [1 ]
Salam, M. Y. [1 ]
机构：
[1] Univ Indonesia, Dept Met & Mat Engn, Kampus UI, Depok 16424, Jawa Barat, Indonesia
来源：
INTERNATIONAL CONFERENCE ON CONDENSED MATTERS AND ADVANCED MATERIALS (IC2MAM 2018) | 2019年 / 515卷
关键词：
Taguchi method; environmental friendly; pre-treatment ore; hydrochloride acid; traditional mining; THIOSULFATE;
D O I：
10.1088/1757-899X/515/1/012032
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
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)-H2O2 (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 degrees C, and the addition of 0.05 M of NaCl.
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页数：9
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