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Aiming at a carbon-in-leach tailings with relatively high gold grade in Hebei Province, based on the analysis of physicochemical properties and gold chemical phase, the process of ultrafine grinding-chemical pre-oxidation-cyanide leaching was adopted to extract gold from the tailings. The effects of ultrafine grinding fineness, pulp pH, sodium cyanide dosage, leaching temperature and time on gold extraction were investigated, and the kinetics of the chemical pre-oxidation-cyanide leaching process was discussed. The results show that under the conditions of ultrafine grinding fineness of -10 μm accounting of 80%, pre-oxidation of 14 h at an air flow rate of 0.3 m3/h, followed by cyanide leaching with sodium cyanide dosage of 1.5 kg/t, leaching time of 24 h, pulp pH of 12.5, leaching temperature of 303 K, and air flow rate of 0.1 m3/h, the gold leaching rate can reach 70.23%. The kinetic results indicate that the gold leaching process conforms to the classical unreacted shrinking core model, and the leaching reaction rate is controlled by the mixed control of interfacial chemical reaction and diffusion. The SEM and gold chemical phase analysis of the leaching residue show that there exist extremely finely disseminated gold or lattice gold in the carbon-in-leach tailings, which are difficult to leach. The research results can provide certain theoretical guidance and technical reference for further gold extraction from these tailings.

, authors=Ruibiao HU1, Dongxing GAO2, Yubao HUO2, Jianxin E3, authorsList=Ruibiao HU, Dongxing GAO, Yubao HUO, Jianxin E, authorCompany=null, correspAuthors=Dongxing GAO, authorNote=null, correspAuthorsNote=null, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, fund=null), CN=ArticleExt(id=1317114949483217011, articleId=1317114948841488497, tenantId=1146029695717560320, journalId=1146120122248306696, language=CN, title=从某炭浸尾渣中提金及其动力学研究, columnId=1152626641328501305, journalTitle=湿法冶金, columnName=试验研究, runingTitle=null, highlight=null, articleAbstract=

针对河北某金品位较高的炭浸尾渣,在进行理化性质分析和金的化学物相分析基础上,研究了采用超细磨—化学预氧化—氰化浸出工艺提取其中的金。考察了超细磨磨矿细度、矿浆pH、氰化钠用量、浸出温度和时间等因素对提金的影响,并探讨了化学预氧化—氰化浸金过程动力学。研究结果表明:在超细磨磨矿细度-10 μm占80%、空气流量为0.3 m3/h条件下预氧化14 h后,再在氰化钠用量为1.5 kg/t、浸出时间为24 h、矿浆pH=12.5、浸出温度为303 K、通入0.1 m3/h空气条件下进行氰化浸出,金浸出率可达70.23%。动力学研究结果表明,浸金过程符合经典的未反应收缩核模型,浸出反应速率受界面化学反应和扩散混合控制。SEM和浸出渣金化学物相分析结果表明,该炭浸尾渣中存在极其微细嵌布金或晶格金,难以浸出。研究结果可为该尾渣进一步提金提供一定理论指导和技术参考。

, authors=胡瑞彪1, 高东星2, 霍玉宝2, 鄂建新3, authorsList=胡瑞彪, 高东星, 霍玉宝, 鄂建新, authorCompany=null, correspAuthors=高东星, authorNote=

胡瑞彪(1985—),男,硕士,高级工程师,主要研究方向为有色及贵、重金属选冶技术与生产设计。

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高东星(1986—),男,本科,高级工程师,主要研究方向为稀有与放射性金属选冶技术与生产。E-mail:。
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胡瑞彪(1985—),男,硕士,高级工程师,主要研究方向为有色及贵、重金属选冶技术与生产设计。

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胡瑞彪(1985—),男,硕士,高级工程师,主要研究方向为有色及贵、重金属选冶技术与生产设计。

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从某炭浸尾渣中提金及其动力学研究
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胡瑞彪 1 , 高东星 2 , 霍玉宝 2 , 鄂建新 3
湿法冶金 | 试验研究 2026,45(5): 658-667
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湿法冶金 |试验研究 2026 , 45 (5) : 658 -667
从某炭浸尾渣中提金及其动力学研究
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胡瑞彪1, 高东星2 , 霍玉宝2, 鄂建新3
作者信息
  • 1.长沙有色冶金设计研究院有限公司,湖南 长沙 410011
  • 2.中核沽源铀业有限责任公司,河北 张家口 076561
  • 3.贵州锦丰矿业有限公司,贵州 黔西南 562200
通讯作者:
高东星(1986—),男,本科,高级工程师,主要研究方向为稀有与放射性金属选冶技术与生产。E-mail:。
作者简介:

胡瑞彪(1985—),男,硕士,高级工程师,主要研究方向为有色及贵、重金属选冶技术与生产设计。

Extraction of Gold from a Carbon-in-Leach Tailings and Its Kinetics
Ruibiao HU1, Dongxing GAO2 , Yubao HUO2, Jianxin E3
Affiliations
  • 1.CINF Engineering Co., Ltd., Changsha 410011, China
  • 2.CNNC Guyuan Uranium Industry Co., Ltd., Zhangjiakou 076561, China
  • 3.Guizhou Jinfeng Mining Co., Ltd., Qianxinan 562200, China
出版时间: 2026-10-20 doi: 10.13355/j.cnki.sfyj.2026.05.005
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针对河北某金品位较高的炭浸尾渣,在进行理化性质分析和金的化学物相分析基础上,研究了采用超细磨—化学预氧化—氰化浸出工艺提取其中的金。考察了超细磨磨矿细度、矿浆pH、氰化钠用量、浸出温度和时间等因素对提金的影响,并探讨了化学预氧化—氰化浸金过程动力学。研究结果表明:在超细磨磨矿细度-10 μm占80%、空气流量为0.3 m3/h条件下预氧化14 h后,再在氰化钠用量为1.5 kg/t、浸出时间为24 h、矿浆pH=12.5、浸出温度为303 K、通入0.1 m3/h空气条件下进行氰化浸出,金浸出率可达70.23%。动力学研究结果表明,浸金过程符合经典的未反应收缩核模型,浸出反应速率受界面化学反应和扩散混合控制。SEM和浸出渣金化学物相分析结果表明,该炭浸尾渣中存在极其微细嵌布金或晶格金,难以浸出。研究结果可为该尾渣进一步提金提供一定理论指导和技术参考。

炭浸尾矿  /  预氧化  /  氰化浸出  /  包裹金  /  动力学

Aiming at a carbon-in-leach tailings with relatively high gold grade in Hebei Province, based on the analysis of physicochemical properties and gold chemical phase, the process of ultrafine grinding-chemical pre-oxidation-cyanide leaching was adopted to extract gold from the tailings. The effects of ultrafine grinding fineness, pulp pH, sodium cyanide dosage, leaching temperature and time on gold extraction were investigated, and the kinetics of the chemical pre-oxidation-cyanide leaching process was discussed. The results show that under the conditions of ultrafine grinding fineness of -10 μm accounting of 80%, pre-oxidation of 14 h at an air flow rate of 0.3 m3/h, followed by cyanide leaching with sodium cyanide dosage of 1.5 kg/t, leaching time of 24 h, pulp pH of 12.5, leaching temperature of 303 K, and air flow rate of 0.1 m3/h, the gold leaching rate can reach 70.23%. The kinetic results indicate that the gold leaching process conforms to the classical unreacted shrinking core model, and the leaching reaction rate is controlled by the mixed control of interfacial chemical reaction and diffusion. The SEM and gold chemical phase analysis of the leaching residue show that there exist extremely finely disseminated gold or lattice gold in the carbon-in-leach tailings, which are difficult to leach. The research results can provide certain theoretical guidance and technical reference for further gold extraction from these tailings.

carbon-in-leach tailings  /  pre-oxidation  /  cyanide leaching  /  occluded gold  /  kinetics
胡瑞彪, 高东星, 霍玉宝, 鄂建新. 从某炭浸尾渣中提金及其动力学研究. 湿法冶金, 2026 , 45 (5) : 658 -667 . DOI: 10.13355/j.cnki.sfyj.2026.05.005
Ruibiao HU, Dongxing GAO, Yubao HUO, Jianxin E. Extraction of Gold from a Carbon-in-Leach Tailings and Its Kinetics[J]. Hydrometallurgy of China, 2026 , 45 (5) : 658 -667 . DOI: 10.13355/j.cnki.sfyj.2026.05.005
  • 中铝集团外基本业务科研项目(100226202440304)
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2026年第45卷第5期
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doi: 10.13355/j.cnki.sfyj.2026.05.005
  • 接收时间:2025-07-25
  • 首发时间:2026-10-14
  • 出版时间:2026-10-20
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  • 收稿日期:2025-07-25
  • 修回日期:2026-07-03
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中铝集团外基本业务科研项目(100226202440304)
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    1.长沙有色冶金设计研究院有限公司,湖南 长沙 410011
    2.中核沽源铀业有限责任公司,河北 张家口 076561
    3.贵州锦丰矿业有限公司,贵州 黔西南 562200

通讯作者:

高东星(1986—),男,本科,高级工程师,主要研究方向为稀有与放射性金属选冶技术与生产。E-mail:。
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https://castjournals.cast.org.cn/joweb/sfyj/CN/10.13355/j.cnki.sfyj.2026.05.005
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2种不同金属材料的力学参数
科
Family
属数
Number of
genus
种数
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species
占总种数比例
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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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