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Synergistic Extraction and Separation of Trace Gold in Chloride System
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Shan ZHU1, Yangxiao LU1, Jiugang HU2, Chenhu ZHANG1
Hydrometallurgy of China | 2024, 43(1) : 60 - 66
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Hydrometallurgy of China | 2024, 43(1): 60-66
• Experiment Research •
Synergistic Extraction and Separation of Trace Gold in Chloride System
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Shan ZHU1, Yangxiao LU1, Jiugang HU2, Chenhu ZHANG1
Affiliations
  • 1 School of Chemistry and Materials Engineering, Liupanshui Normal University, Liupanshui 553000, China
  • 2 College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China
Published: 2024-02-20 doi: 10.13355/j.cnki.sfyj.2024.01.010
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The separation and enrichment of precious metal gold in chloride system with synergistic extraction system composed of DIBK (HA) and TBP (B) was stuied. The effects of extraction system and composition, extraction time, extraction temperature, aqueous chloride ion concentration,and extraction ratio (VO/VA) on the separation performance of gold extraction was investigated, and the extraction mechanism was preliminarily explored by slope method. The results indicate that under the conditions of synergistic extraction system of TBP-DIBK, total extractant concentration of 1.5 mol/L, n(TBP)∶n(DIBK)=1∶4, extraction time of 20 min,extraction temperature of 20 ℃, VO/VA= 2/1, aqueous chloride ion concentration of 6 mol/L, the extraction rate of gold can reach 98.82%.The maximum gold/copper extraction separation coefficient is 1 189.05. Gradient method suggests that the composition of the extract may be [AuCl6·3A·B]. The extraction chemical reaction formula can be rewritten as: Au3++6Cl-+3HA+B→[AuCl6·3A·B]+3H+.

acidic solution  /  diisobutyl ketone  /  tributyl phosphate  /  synergistic extraction  /  trace precious metals  /  gold
Shan ZHU, Yangxiao LU, Jiugang HU, Chenhu ZHANG. Synergistic Extraction and Separation of Trace Gold in Chloride System[J]. Hydrometallurgy of China, 2024 , 43 (1) : 60 -66 . DOI: 10.13355/j.cnki.sfyj.2024.01.010
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doi: 10.13355/j.cnki.sfyj.2024.01.010
  • Receive Date：2023-05-24
  • Online Date：2025-09-10
  • Published：2024-02-20
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  • Received：2023-05-24
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    1 School of Chemistry and Materials Engineering, Liupanshui Normal University, Liupanshui 553000, China
    2 College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, 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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