Behavior of tellurium during vacuum thermal decomposition of Ag–Cu–Te alloy
Ag–Cu–Te alloy is inevitable to be produced in the process from lead-copper anode slime to extract precious metals. It has been prone to the situation where tellurium would deposit on the cathode and affect the quality of silver powders. Currently, the main processes of separating tellurium from Ag–...
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Elsevier
2025-03-01
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| Series: | Journal of Materials Research and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785425000134 |
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| author | Jia Deng Hongjun Ding Huan Luo Xianjun Lei Baoqiang Xu Bin Yang |
| author_facet | Jia Deng Hongjun Ding Huan Luo Xianjun Lei Baoqiang Xu Bin Yang |
| author_sort | Jia Deng |
| collection | DOAJ |
| description | Ag–Cu–Te alloy is inevitable to be produced in the process from lead-copper anode slime to extract precious metals. It has been prone to the situation where tellurium would deposit on the cathode and affect the quality of silver powders. Currently, the main processes of separating tellurium from Ag–Cu–Te alloy are through oxidation slagging or increasing the current density and pole spacing in the electrolysis, but these processes are long durations and high costs. This paper presents a green and efficient strategy for separating tellurium from Ag–Cu–Te alloy by vacuum thermal decomposition. The microscopic interactive mechanism between Ag, Cu, Te was explained by molecular dynamics calculations. The results demonstrate that the stability of Ag2Te structure is higher than that of Cu2Te structure, and tellurium in Cu2Te is easier to separate. The experimental results show the volatilization of tellurium reached 99.93% at 1523 K, 10 Pa, and 480 min holding time, and the content of tellurium in the residue was only 0.0045 wt%. This method will effectively remove tellurium from Ag–Cu–Te alloy and provide some ideas for the separation and recovery of precious metals. |
| format | Article |
| id | doaj-art-2963d3b45f73408e8b338d3b0ad6a891 |
| institution | Kabale University |
| issn | 2238-7854 |
| language | English |
| publishDate | 2025-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj-art-2963d3b45f73408e8b338d3b0ad6a8912025-01-18T05:04:43ZengElsevierJournal of Materials Research and Technology2238-78542025-03-013510301039Behavior of tellurium during vacuum thermal decomposition of Ag–Cu–Te alloyJia Deng0Hongjun Ding1Huan Luo2Xianjun Lei3Baoqiang Xu4Bin Yang5Key Laboratory for Nonferrous Vacuum Metallurgy of Yunnan Province, Kunming University of Science and Technology, Kunming, 650093, China; National Engineering Research Center of Vacuum Metallurgy, Kunming University of Science and Technology, Kunming, 650093, China; Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming, 650093, ChinaKey Laboratory for Nonferrous Vacuum Metallurgy of Yunnan Province, Kunming University of Science and Technology, Kunming, 650093, China; National Engineering Research Center of Vacuum Metallurgy, Kunming University of Science and Technology, Kunming, 650093, China; Yunnan Tin New Material Company Limited, Kunming, 650093, ChinaKey Laboratory for Nonferrous Vacuum Metallurgy of Yunnan Province, Kunming University of Science and Technology, Kunming, 650093, China; State Key Laboratory of Complex Non-ferrous Metal Resources Clean Utilization, Kunming University of Science and Technology, Kunming, 650093, China; National Engineering Research Center of Vacuum Metallurgy, Kunming University of Science and Technology, Kunming, 650093, China; Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming, 650093, ChinaKey Laboratory for Nonferrous Vacuum Metallurgy of Yunnan Province, Kunming University of Science and Technology, Kunming, 650093, China; State Key Laboratory of Complex Non-ferrous Metal Resources Clean Utilization, Kunming University of Science and Technology, Kunming, 650093, China; National Engineering Research Center of Vacuum Metallurgy, Kunming University of Science and Technology, Kunming, 650093, China; Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming, 650093, China; Corresponding author. Key Laboratory for Nonferrous Vacuum Metallurgy of Yunnan Province, Kunming University of Science and Technology, Kunming, 650093, China.Key Laboratory for Nonferrous Vacuum Metallurgy of Yunnan Province, Kunming University of Science and Technology, Kunming, 650093, China; State Key Laboratory of Complex Non-ferrous Metal Resources Clean Utilization, Kunming University of Science and Technology, Kunming, 650093, China; National Engineering Research Center of Vacuum Metallurgy, Kunming University of Science and Technology, Kunming, 650093, China; Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming, 650093, China; Corresponding author. Key Laboratory for Nonferrous Vacuum Metallurgy of Yunnan Province, Kunming University of Science and Technology, Kunming, 650093, China.Key Laboratory for Nonferrous Vacuum Metallurgy of Yunnan Province, Kunming University of Science and Technology, Kunming, 650093, China; State Key Laboratory of Complex Non-ferrous Metal Resources Clean Utilization, Kunming University of Science and Technology, Kunming, 650093, China; National Engineering Research Center of Vacuum Metallurgy, Kunming University of Science and Technology, Kunming, 650093, China; Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming, 650093, ChinaAg–Cu–Te alloy is inevitable to be produced in the process from lead-copper anode slime to extract precious metals. It has been prone to the situation where tellurium would deposit on the cathode and affect the quality of silver powders. Currently, the main processes of separating tellurium from Ag–Cu–Te alloy are through oxidation slagging or increasing the current density and pole spacing in the electrolysis, but these processes are long durations and high costs. This paper presents a green and efficient strategy for separating tellurium from Ag–Cu–Te alloy by vacuum thermal decomposition. The microscopic interactive mechanism between Ag, Cu, Te was explained by molecular dynamics calculations. The results demonstrate that the stability of Ag2Te structure is higher than that of Cu2Te structure, and tellurium in Cu2Te is easier to separate. The experimental results show the volatilization of tellurium reached 99.93% at 1523 K, 10 Pa, and 480 min holding time, and the content of tellurium in the residue was only 0.0045 wt%. This method will effectively remove tellurium from Ag–Cu–Te alloy and provide some ideas for the separation and recovery of precious metals.http://www.sciencedirect.com/science/article/pii/S2238785425000134Ag–Cu–Te alloyVacuumThermal decompositionTelluriumMolecular dynamics |
| spellingShingle | Jia Deng Hongjun Ding Huan Luo Xianjun Lei Baoqiang Xu Bin Yang Behavior of tellurium during vacuum thermal decomposition of Ag–Cu–Te alloy Journal of Materials Research and Technology Ag–Cu–Te alloy Vacuum Thermal decomposition Tellurium Molecular dynamics |
| title | Behavior of tellurium during vacuum thermal decomposition of Ag–Cu–Te alloy |
| title_full | Behavior of tellurium during vacuum thermal decomposition of Ag–Cu–Te alloy |
| title_fullStr | Behavior of tellurium during vacuum thermal decomposition of Ag–Cu–Te alloy |
| title_full_unstemmed | Behavior of tellurium during vacuum thermal decomposition of Ag–Cu–Te alloy |
| title_short | Behavior of tellurium during vacuum thermal decomposition of Ag–Cu–Te alloy |
| title_sort | behavior of tellurium during vacuum thermal decomposition of ag cu te alloy |
| topic | Ag–Cu–Te alloy Vacuum Thermal decomposition Tellurium Molecular dynamics |
| url | http://www.sciencedirect.com/science/article/pii/S2238785425000134 |
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