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Experimental Study on Gold Extraction from Sulfur Concentrate by Roasting and Leaching
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Menghua YANG1, 2, Hongyu YANG3, Xiaoyu ZHU2, Shiwen ZHANG4, Feng TIAN2
Mining and Metallurgical Engineering | 2023, 43(3) : 124 - 127
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Mining and Metallurgical Engineering | 2023, 43(3): 124-127
• METALLURGY •
Experimental Study on Gold Extraction from Sulfur Concentrate by Roasting and Leaching
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Menghua YANG1, 2, Hongyu YANG3, Xiaoyu ZHU2, Shiwen ZHANG4, Feng TIAN2
Affiliations
  • 1.School of Resources and Environmental Engineering, Hefei University of Technology, Hefei 230002, Anhui, China
  • 2.Anhui Changzhiyuan Environmental Engineering Co Ltd, Hefei 230051, Anhui, China
  • 3.Anhui Jinding Mining Co Ltd, Hefei 231500, Anhui, China
  • 4.Anhui University of Science and Technology, Hefei 232001, Anhui, China
Published: 2023-06-01 doi: 10.3969/j.issn.0253-6099.2023.03.028
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Experiments of roasting and leaching of some sulfur concentrate were performed, and the effects of two schemes with fixed bed roasting and fluidized bed roasting on gold extraction were analyzed. The results showed that with the sulfur concentrate at a sizing of 80% -0.074 mm, the proper conditions for a fixed bed roasting included a roasting temperature of 650 ℃ and roasting time of 4 h; while the proper conditions for a fluidized bed roasting included a roasting temperature of 650 ℃ and roasting time of 3 h, roasting gas and material in a ratio of 2.1 m3/kg. The calcines obtained by these two roasting methods were then separately leached for 24 h with the slurry concentration of 33% and pH of 11.5, 2 h alkali treatment and CG505 dosage of 10 kg/t, resulting in the leaching rate of gold reaching 69.45% and 69.92% respectively. It is shown that the fluidized bed roasting can bring in a better gold extraction result. This research results can provide a technical basis for recovery of valuable elements from sulfur concentrate.

sulfur concentrate  /  fluidized bed roasting  /  fixed bed roasting  /  gold
Menghua YANG, Hongyu YANG, Xiaoyu ZHU, Shiwen ZHANG, Feng TIAN. Experimental Study on Gold Extraction from Sulfur Concentrate by Roasting and Leaching[J]. Mining and Metallurgical Engineering, 2023 , 43 (3) : 124 -127 . DOI: 10.3969/j.issn.0253-6099.2023.03.028
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doi: 10.3969/j.issn.0253-6099.2023.03.028
  • Receive Date：2022-12-22
  • Online Date：2026-03-05
  • Published：2023-06-01
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  • Received：2022-12-22
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Affiliations
    1.School of Resources and Environmental Engineering, Hefei University of Technology, Hefei 230002, Anhui, China
    2.Anhui Changzhiyuan Environmental Engineering Co Ltd, Hefei 230051, Anhui, China
    3.Anhui Jinding Mining Co Ltd, Hefei 231500, Anhui, China
    4.Anhui University of Science and Technology, Hefei 232001, Anhui, China
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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