Recovery of Tellurium from Cyanide Leaching Gold Tailings and the Leaching Mechanism of Lead Telluride

被引：0
作者：
Yang, Wei [1 ,2 ,3 ,4 ]
Dong, Hua [1 ,2 ,3 ]
Luukkanen, Saija
Deng, Sha [1 ,2 ,3 ]
Long, Tao [1 ,2 ,3 ,4 ]
Wan, He [1 ,2 ]
Wang, Gang [1 ,2 ,3 ]
机构：
[1] Xian Univ Architecture & Technol, Sch Resources Engn, Xian 710055, Peoples R China
[2] Key Lab Gold & Resources Shaanxi Prov, Xian 710055, Peoples R China
[3] Xian Univ Architecture & Technol, Technol & Equipment Inst Green Beneficiat Met, Xian 710055, Peoples R China
[4] Univ Oulu, Oulu Min Sch, Oulu 90014, Finland
来源：
JOM | 2024年 / 76卷 / 03期
基金：
中国国家自然科学基金;
关键词：
Calcination - Cyanides - Gold - Gold ore treatment - IV-VI semiconductors - Leaching - Lead compounds - Oxidation - Recovery - Sodium hydroxide - Sodium sulfide - Sulfur compounds - Tellurium compounds;
D O I：
10.1007/s11837-023-06103-y
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
It is significantly challenging to extract Te from gold-leaching tailings. The effects and the leaching mechanism of direct alkaline leaching and oxidation-roasting alkaline leaching processes on tellurium recovery from cyanide-leaching gold tailings are studied in the Xiaoqinling region, Shaanxi, China. The results show that the leaching of tellurium from PbTe can be promoted with the pretreatment of oxidation roasting. XRD and TG analyses indicate that in the direct alkali leaching process, insoluble PbS film covers the surface of PbTe and hinders the reaction between the leaching agent and PbTe, resulting in a low Te leaching rate, but in the oxidation roasting process, PbTe is transformed into PbTeO3 and TeO2. The reaction between PbTeO3 and Na2S forms soluble Na2TeO3 while that of TeO2 with NaOH produces soluble Na2TeO3, thus promoting Te from PbTe. The tellurium leaching rate remains low because of the coverage of the PbSO4 and PbS on the surface of PbTe produced during the oxidative-roasting alkali leaching, which hinders the dissolution of PbTe. The process was consistent with the result of solid film diffusion. This research provides valuable theoretical guidance and practical significance for the development of integrated recovery technology of tellurium with associated elements.
引用
收藏
页码：1557 / 1568
页数：12
相关论文
共 33 条
[1]   Experimental, kinetic and 2-D reactor modeling for simulation of the production of hydrogen by the catalytic reforming of concentrated crude ethanol (CRCCE) over a Ni-based commercial catalyst in a packed-bed tubular reactor [J].
Akpan, Enefiok ;
Akande, Abayomi ;
Aboudheir, Ahmed ;
Ibrahim, Hussam ;
Idem, Raphael .
CHEMICAL ENGINEERING SCIENCE, 2007, 62 (12) :3112-3126
[2]  
Cao D., 2010, Liaon. Chem. Ind, V6, P593
[3]  
Cheng LL., 2008, Chin. J. Rare Metals, DOI [10.13373/j.cnki.cjrm.2008.01.020, DOI 10.13373/J.CNKI.CJRM.2008.01.020]
[4]  
Ding SY., 1995, He Nan Geol, V13, P241
[5]   On the refractory nature of precious metal tellurides [J].
Dyer, Laurence G. ;
Sauber, Maziar ;
Dixon, David G. ;
Asselin, Edouard .
HYDROMETALLURGY, 2017, 169 :488-495
[6]   Tellurium Recovery from the Unique Tellurium Ores [J].
Gu, Yafei ;
Zhang, Nan ;
Li, Dongchan ;
Tang, Famang ;
Deng, Tianlong .
CHEMICAL ENGINEERING AND MATERIAL PROPERTIES II, 2012, 549 :1060-+
[7]   Recovery of tellurium from high tellurium-bearing materials by alkaline sulfide leaching followed by sodium sulfite precipitation [J].
Guo, Xueyi ;
Xu, Zhipeng ;
Li, Dong ;
Tian, Qinghua ;
Xu, Runze ;
Zhang, Zhen .
HYDROMETALLURGY, 2017, 171 :355-361
[8]  
Jiao RQ., 2018, Mod. Min, V34, P88, DOI [10.3969/j.issn.1674-6082.2018.05.019, DOI 10.3969/J.ISSN.1674-6082.2018.05.019]
[9]   Efficient electrochemical recovery of fine tellurium powder from hydrochloric acid media via mass transfer enhancement [J].
Jin, Wei ;
Su, Junling ;
Chen, Shifu ;
Li, Ping ;
Moats, Michael S. ;
Maduraiveeran, Govindhan ;
Lei, Hong .
SEPARATION AND PURIFICATION TECHNOLOGY, 2018, 203 :117-123
[10]  
Li LL., 2018, World Nonferrous Metals, V12, P17
1234