Home Journals Articles Updates About
CN
image
收藏切换
Experimental Study on Cyanide-Free Leaching of Arsenic-Bearing Gold Ore from Laos
收藏切换
PDF
Jingyu CHEN1, Yiqiang LIANG2, 3, Saiqiong KAN2, 3
Mining and Metallurgical Engineering | 2024, 44(5) : 124 - 127
Less
收藏切换
Mining and Metallurgical Engineering | 2024, 44(5): 124-127
• METALLURGY •
Experimental Study on Cyanide-Free Leaching of Arsenic-Bearing Gold Ore from Laos
Full
Jingyu CHEN1, Yiqiang LIANG2, 3, Saiqiong KAN2, 3
Affiliations
  • 1.Tianjin Huakan Laos Mining Co., Ltd., Tianjin 300160, China
  • 2.Kunming Metallurgical Research Institute Co., Ltd., Kunming 650031, Yunnan, China
  • 3.National Key Laboratory of New Enhanced Metallurgical Technology for Nonferrous Metals, Kunming 650031, Yunnan, China
Published: 2024-10-01 doi: 10.3969/j.issn.0253-6099.2024.05.025
Outline
收藏切换

A cyanide-free leaching test was performed for the arsenic-carbon bearing gold ore from Laos, and effects of grinding fineness, pH value of pulp, concentration of slurry, and the dosage of golden cicadas environment-friendly leaching agent for gold on gold leaching effect were investigated. The results show that pre-treatment with hydrogen peroxide can improve the leaching rate of gold. With a grinding fineness of -0.074 mm 95% and an agitating speed of 2 000 r/min, the pulp is pre-oxidized with 500 g/t of hydrogen peroxide for 3 h, and then treated by 30 h agitation leaching with addition of lime at an amount of 3 000 g/t and golden cicadas environment-friendly leaching agent for gold at 5 000 g/t, leading to the residue grading 0.25 g/t Au and gold leaching rate of 92.27%. It is shown that this pretreatment with hydrogen peroxide can make gold leaching rate up by 1.96 percentage points.

cyanide-free leaching  /  pre-oxidation  /  leaching agent  /  arsenic-bearing gold ore  /  golden cicada environment-friendly leaching agent for gold  /  hydrogen peroxide  /  gold leaching
Jingyu CHEN, Yiqiang LIANG, Saiqiong KAN. Experimental Study on Cyanide-Free Leaching of Arsenic-Bearing Gold Ore from Laos[J]. Mining and Metallurgical Engineering, 2024 , 44 (5) : 124 -127 . DOI: 10.3969/j.issn.0253-6099.2024.05.025
Appendix
Less
Year 2024 volume 44 Issue 5
PDF
90
43
Cite this Article
BibTeX
Article Info
doi: 10.3969/j.issn.0253-6099.2024.05.025
  • Receive Date：2024-04-02
  • Online Date：2026-03-17
  • Published：2024-10-01
Article Data
Affiliations
History
  • Received：2024-04-02
Funding
Affiliations
    1.Tianjin Huakan Laos Mining Co., Ltd., Tianjin 300160, China
    2.Kunming Metallurgical Research Institute Co., Ltd., Kunming 650031, Yunnan, China
    3.National Key Laboratory of New Enhanced Metallurgical Technology for Nonferrous Metals, Kunming 650031, Yunnan, China
References
Share
https://castjournals.cast.org.cn/joweb/kygczz/EN/10.3969/j.issn.0253-6099.2024.05.025
Share to
QR

Scan QR to access full text

Cite this article
BibTeX
Citations
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
关闭全屏
  • BibTeX
  • EndNote
  • RefWorks
  • TxT
Links
Articles
Latest Articles
Most Read
Collections
Updates
Events
News
Multimedia
About
About Us
Contact
No. 86 Xueyuan South Road, Haidian District, Beijing
100081
010-62199257
qkjq@cast.org.cn

Copyright © 2025 China Association for Science and Technology. All rights reserved. For all open access content, the relevant licensing terms apply.
Sponsored by the Office of the Leading Group for Cybersecurity and Informatization of CAST, and supported by Science and Technology Review Publishing House