Study on Low-Temperature Vacuum Carbothermal Reduction of High-arsenic Copper Dust in Copper Fire Refining Furnace for Arsenic Removal
Using the high arsenic copper dust from the copper fire refining furnace as the raw material, the low-temperature vacuum carbothermic reduction method is used to remove As from the dust. Differential thermal analysis of the raw materials was carried out by TGA-DSC, and the phase, chemical compositio...
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| Format: | Article |
| Language: | zho |
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Institute of Multipurpose Utilization of Mineral Resources, Chinese Academy of Geological Sciences
2022-12-01
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| Series: | Kuangchan zonghe liyong |
| Subjects: | |
| Online Access: | http://www.kczhly.com/en/article/doi/10.3969/j.issn.1000-6532.2022.06.028 |
| _version_ | 1811170422406774784 |
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| author | Cong Li Rongliang Zhang Jia Zeng Qinyao Lu Linkai Zhou Wei Zhang |
| author_facet | Cong Li Rongliang Zhang Jia Zeng Qinyao Lu Linkai Zhou Wei Zhang |
| author_sort | Cong Li |
| collection | DOAJ |
| description | Using the high arsenic copper dust from the copper fire refining furnace as the raw material, the low-temperature vacuum carbothermic reduction method is used to remove As from the dust. Differential thermal analysis of the raw materials was carried out by TGA-DSC, and the phase, chemical composition and morphology of the dust and evaporation residue were analyzed by XRD, ICP, SEM and other analytical methods. On the basis of thermodynamic analysis, the effect of evaporation temperature, residual pressure, reducing dose, evaporation time, etc. on the removal rate of As and other valuable metals. The results show that when the evaporation temperature is 350℃, the residual pressure is 100 Pa, the reducing amount is 25%, and the evaporation time is 50 min, the removal rate of As can reach 81.63% while ensuring that other metals do not evaporate basically, realizing As Selective separation of other valuable metals. The evaporate is As2O3 with higher purity, which can be used as primary As2O3 product. Valuable metals are enriched in the evaporation residue, which is convenient for the subsequent recovery of the waste acid leaching process. |
| first_indexed | 2024-04-10T16:56:34Z |
| format | Article |
| id | doaj.art-9af8737069d24693aa8f176ee1d7cb7e |
| institution | Directory Open Access Journal |
| issn | 1000-6532 |
| language | zho |
| last_indexed | 2024-04-10T16:56:34Z |
| publishDate | 2022-12-01 |
| publisher | Institute of Multipurpose Utilization of Mineral Resources, Chinese Academy of Geological Sciences |
| record_format | Article |
| series | Kuangchan zonghe liyong |
| spelling | doaj.art-9af8737069d24693aa8f176ee1d7cb7e2023-02-07T06:48:01ZzhoInstitute of Multipurpose Utilization of Mineral Resources, Chinese Academy of Geological SciencesKuangchan zonghe liyong1000-65322022-12-0143616717310.3969/j.issn.1000-6532.2022.06.0282022-06licongStudy on Low-Temperature Vacuum Carbothermal Reduction of High-arsenic Copper Dust in Copper Fire Refining Furnace for Arsenic RemovalCong Li0Rongliang Zhang1Jia Zeng2Qinyao Lu3Linkai Zhou4Wei Zhang5School of Metallurgy and Materials Engineering, Zhangjiagang Campus, Jiangsu University of Science and Technology, Zhangjiagang, Jiangsu, ChinaSchool of Metallurgy and Materials Engineering, Zhangjiagang Campus, Jiangsu University of Science and Technology, Zhangjiagang, Jiangsu, ChinaSchool of Metallurgy and Materials Engineering, Zhangjiagang Campus, Jiangsu University of Science and Technology, Zhangjiagang, Jiangsu, ChinaSchool of Metallurgy and Materials Engineering, Zhangjiagang Campus, Jiangsu University of Science and Technology, Zhangjiagang, Jiangsu, ChinaSchool of Metallurgy and Materials Engineering, Zhangjiagang Campus, Jiangsu University of Science and Technology, Zhangjiagang, Jiangsu, ChinaSchool of Metallurgy and Materials Engineering, Zhangjiagang Campus, Jiangsu University of Science and Technology, Zhangjiagang, Jiangsu, ChinaUsing the high arsenic copper dust from the copper fire refining furnace as the raw material, the low-temperature vacuum carbothermic reduction method is used to remove As from the dust. Differential thermal analysis of the raw materials was carried out by TGA-DSC, and the phase, chemical composition and morphology of the dust and evaporation residue were analyzed by XRD, ICP, SEM and other analytical methods. On the basis of thermodynamic analysis, the effect of evaporation temperature, residual pressure, reducing dose, evaporation time, etc. on the removal rate of As and other valuable metals. The results show that when the evaporation temperature is 350℃, the residual pressure is 100 Pa, the reducing amount is 25%, and the evaporation time is 50 min, the removal rate of As can reach 81.63% while ensuring that other metals do not evaporate basically, realizing As Selective separation of other valuable metals. The evaporate is As2O3 with higher purity, which can be used as primary As2O3 product. Valuable metals are enriched in the evaporation residue, which is convenient for the subsequent recovery of the waste acid leaching process.http://www.kczhly.com/en/article/doi/10.3969/j.issn.1000-6532.2022.06.028pyro-refining furnacehigh-arsenic copper dustvacuum carbothermal reductionarsenic removal |
| spellingShingle | Cong Li Rongliang Zhang Jia Zeng Qinyao Lu Linkai Zhou Wei Zhang Study on Low-Temperature Vacuum Carbothermal Reduction of High-arsenic Copper Dust in Copper Fire Refining Furnace for Arsenic Removal Kuangchan zonghe liyong pyro-refining furnace high-arsenic copper dust vacuum carbothermal reduction arsenic removal |
| title | Study on Low-Temperature Vacuum Carbothermal Reduction of High-arsenic Copper Dust in Copper Fire Refining Furnace for Arsenic Removal |
| title_full | Study on Low-Temperature Vacuum Carbothermal Reduction of High-arsenic Copper Dust in Copper Fire Refining Furnace for Arsenic Removal |
| title_fullStr | Study on Low-Temperature Vacuum Carbothermal Reduction of High-arsenic Copper Dust in Copper Fire Refining Furnace for Arsenic Removal |
| title_full_unstemmed | Study on Low-Temperature Vacuum Carbothermal Reduction of High-arsenic Copper Dust in Copper Fire Refining Furnace for Arsenic Removal |
| title_short | Study on Low-Temperature Vacuum Carbothermal Reduction of High-arsenic Copper Dust in Copper Fire Refining Furnace for Arsenic Removal |
| title_sort | study on low temperature vacuum carbothermal reduction of high arsenic copper dust in copper fire refining furnace for arsenic removal |
| topic | pyro-refining furnace high-arsenic copper dust vacuum carbothermal reduction arsenic removal |
| url | http://www.kczhly.com/en/article/doi/10.3969/j.issn.1000-6532.2022.06.028 |
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