Extraction of Gold from a Low-Grade Double Refractory Gold Ore Using Flotation-Preoxidation-Leaching Process

2015 ◽  
pp. 55-62
Author(s):  
Yongbin Yang ◽  
Shiqian Liu ◽  
Bin Xu ◽  
Qian Li ◽  
Tao Jiang ◽  
...  
Keyword(s):  
Low Grade ◽  
Gold Ore ◽  
Leaching Process ◽  
Refractory Gold

Extraction of Gold from a Low-Grade Double Refractory Gold Ore Using Flotation-Preoxidation-Leaching Process

2015 ◽  
pp. 53-62 ◽  
Author(s):  
Yongbin Yang ◽  
Shiqian Liu ◽  
Bin Xu ◽  
Qian Li ◽  
Tao Jiang ◽  
...  
Keyword(s):  
Low Grade ◽  
Gold Ore ◽  
Leaching Process ◽  
Refractory Gold

Gold Extraction from a High Carbon Low-Grade Refractory Gold Ore by Flotation-Roasting-Leaching Process

2015 ◽  
pp. 63-70 ◽  
Author(s):  
Yongbin Yang ◽  
Zhaohui Xie ◽  
Bin Xu ◽  
Qian Li ◽  
Tao Jiang
Keyword(s):  
Low Grade ◽  
High Carbon ◽  
Gold Extraction ◽  
Gold Ore ◽  
Leaching Process ◽  
Refractory Gold

Gold Extraction from a High Carbon Low-Grade Refractory Gold Ore by Flotation-Roasting-Leaching Process

2015 ◽  
pp. 63-70 ◽  
Author(s):  
Yongbin Yang ◽  
Zhaohui Xie ◽  
Bin Xu ◽  
Qian Li ◽  
Tao Jiang
Keyword(s):  
Low Grade ◽  
High Carbon ◽  
Gold Extraction ◽  
Gold Ore ◽  
Leaching Process ◽  
Refractory Gold

scholarly journals Improved recovery of a low-grade refractory gold ore using flotation–preoxidation–cyanidation methods

2014 ◽  
Vol 24 (4) ◽  
pp. 537-542 ◽  
Author(s):  
Soltani Faraz ◽  
Darabi Hossna ◽  
Badri Rezgar ◽  
Zamankhan Piroz
Keyword(s):  
Low Grade ◽  
Gold Ore ◽  
Refractory Gold

scholarly journals Mineralogical Characteristics of a Micro-Fine and Low Grade Refractory Gold Ore

2018 ◽  
Vol 142 ◽  
pp. 02011
Author(s):  
Yong Chen ◽  
Yongsheng Song ◽  
Wenjuan Li ◽  
Liulu Cai
Keyword(s):  
Low Grade ◽  
Gold Ore ◽  
Mineralogical Characteristics ◽  
Refractory Gold

scholarly journals Mineralogical Characteristics of a Micro-Fine and Low Grade Refractory Gold Ore

2018 ◽  
Vol 142 ◽  
pp. 02011
Author(s):  
Yong Chen ◽  
Yongsheng Song ◽  
Wenjuan Li ◽  
Liulu Cai
Keyword(s):  
Analytical Techniques ◽  
Size Analysis ◽  
Gangue Mineral ◽  
Low Grade ◽  
Mineralogical Characterization ◽  
Valuable Metal ◽  
Gold Ore ◽  
Mineralogical Characteristics ◽  
Refractory Gold

Detailed characterization of a micro-fine, low-grade refractory gold ore from a beneficiation plant in Yunnan Province, China, was investigated. Different analytical techniques, such as videlicet size analysis, scanning electron microscopy, and mineral analysis by a Mineral Liberation Analyser, were used for mineralogical characterization of the ore. The results show that the most valuable metal is gold. Grain size of pyrites and arsenian pyrites, which are main gold carrying minerals, are mostly 1 ~ 30 μ m. The gangue mineral is composed of quartz, mica, dolomite and feldspar, while the content of easy-to-float and clay gangue minerals is up to 33%.

Separation Tests of Low-Grade Gold Ore with High Sulfur and Arsenic

2012 ◽  
Vol 454 ◽  
pp. 285-291 ◽  
Author(s):  
Ying Qiang Ma ◽  
Xi Mei Luo ◽  
Wan Zhong Yin ◽  
Jin Yao ◽  
Ming Bao Liu ◽  
...  
Keyword(s):  
Mineral Composition ◽  
Chemical Elements ◽  
Practical Significance ◽  
Low Grade ◽  
Preliminary Results ◽  
Gold Ore ◽  
Refractory Gold

With the rise of gold prices, a large amount of gold resources will be exploited, which leads to more and more refractory gold ore appeared. It has very important practical significance to accelerate the development of refractory gold resources. This paper has done the separation tests of low-grade gold ore with high sulfur and arsenic from Tianmashan, Tong Ling in China. The chemical elements component, mineral composition, and the dissemination of mineral and gold have been analyzed. The separation flowsheet tests have been explored, and the preliminary results and appropriate reagent regime have been obtained.

Study on the Gold Recovery of Double Refractory Gold Ore Concentrate by Biological Oxidation Pretreatment

2015 ◽  
Vol 1130 ◽  
pp. 379-382 ◽  
Author(s):  
Wen Jie Luo ◽  
Hong Ying Yang ◽  
Zhe Nan Jin
Keyword(s):  
Oxidation Process ◽  
Packing Problem ◽  
Gold Recovery ◽  
Cyanide Leaching ◽  
Bacterial Oxidation ◽  
Gold Ore ◽  
Leaching Process ◽  
Element Carbon ◽  
Refractory Gold ◽  
Leaching Experiments

In this paper, Bacterial oxidation-cyanide leaching experiments were carried out and the carbonaceous substances composition of carbonaceous gold concentrate was been studied. The elemental composition was 9.73 % iron, 9.66 % sulfur, 4.84 % arsenic and 13.23 % carbon which element carbon and organic carbon was 12.11wt.% and 0.06 wt.% respectively. The main carbonaceous substances were elemental carbon which the morphology was dense and similar to graphite. The removal rates of iron, arsenic and sulfur were achieved to 93.78%, 97.02% and 95.54% respectively by bioleaching, and the gold recovery of oxidation residue reached 92.34% by carbon inhibited cyanide leaching process. The sulfide minerals packing problem could be effectively solved by bacterial oxidation process and greatly increased the gold recovery. So the bacteria oxidation and carbon inhibited leaching process is applicable to the carbonaceous gold ore.

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