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| Study on Secondary Enrichment and Extraction of Germanium from Low Grade Germanium-bearing Dust of Cyclone Furnace |
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Received:July 10, 2019
Revised:July 29, 2019
Accepted:July 29, 2019
Published Online:November 18, 2019
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| DOI：doi：10.3969/j.issn.1007-7545.2019.12.006 |
| KeyWord:low grade; germanium-bearing dust of cyclone furnace; vulcanizing agent; secondary enrichment |
| Author | Institution |
| CAO Hongyang |
广东省稀有金属研究所;广东省稀土开发及应用研究重点实验室;稀有金属分离与综合利用国家重点实验室 |
| CHEN Dongdong |
广东省稀有金属研究所，广东工业大学环境科学与工程学院 |
| RAO Shuai |
广东省稀有金属研究所;广东省稀土开发及应用研究重点实验室;稀有金属分离与综合利用国家重点实验室 |
| GAO Yuan |
广东省稀有金属研究所;广东省稀土开发及应用研究重点实验室;稀有金属分离与综合利用国家重点实验室 |
| CHEN Shaochun |
广东省稀有金属研究所;广东省稀土开发及应用研究重点实验室;稀有金属分离与综合利用国家重点实验室 |
| ZHANG Kuifang |
广东省稀有金属研究所;广东省稀土开发及应用研究重点实验室;稀有金属分离与综合利用国家重点实验室 |
| ZHU Wei |
广东省稀有金属研究所;广东省稀土开发及应用研究重点实验室;稀有金属分离与综合利用国家重点实验室 |
| LIU Zhiqiang |
广东省稀有金属研究所;广东省稀土开发及应用研究重点实验室;稀有金属分离与综合利用国家重点实验室 |
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| Abstract: |
| Effects of vulcanizing agent, i.e. pyrite concentrate, on secondary volatilization enrichment of germanium resources in germanium-bearing lignite dust of cyclone furnace were investigated. Mechanism of secondary volatilization enrichment of germanium-bearing dust was analyzed by adopting HSC software combining microstructures and TG-DTG analysis. The results show that germanium content in dust drops with the increase of dosage of vulcanizing agent, vulcanization temperature, and reaction time. Average germanium content in secondary dust is 15.22%, germanium volatilization rate is 91.82%, and secondary enrichment of germanium in low-grade germanium-bearing dust is realized under the conditions including dosage of sulfide pyrite concentrate of 20%, reaction temperature of 1 200 ℃, and reaction time of 6 h. |
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