The process of vanadium migration and silicon extraction by alkaline leaching from high silicon stone coal under reduction conditions
文献类型：期刊论文
| 作者 | Wu, Hao1,2; Feng, Yali1; Zhang, Heng1; Li, Haoran2 |
| 刊名 | METALLURGICAL RESEARCH & TECHNOLOGY
 |
| 出版日期 | 2019-04-10 |
| 卷号 | 116期号:3页码:7 |
| 关键词 | stone coal silicon extraction vanadium phase vanadium migration reduction conditions |
| ISSN号 | 2271-3646 |
| DOI | 10.1051/metal/2018101 |
| 英文摘要 | It is difficult to utilize stone coal with a vanadium grade of below 0.7%. With the aim of effectively utilizing the silicon and vanadium in stone coal, the vanadium concentration and silicon extraction processes by alkaline leaching under reducing conditions were investigated. The effect of NaOH mass fraction, temperature and the amount of hydrazine hydrate on the leaching process was researched. Moreover, the laws of phase transformation and the migration process of vanadium were revealed. The results show that the dissolution of quartz resulted in the exposure of muscovite and goldmanite, but the phase of muscovite and goldmanite was not damaged. Under the optimal operation conditions (25% mass fraction of NaOH, liquid-solid ratio 2:1 at 200 degrees C for 4 hours), 90.14% of silicon was removed. At the same time, the modulus of sodium silicate product reached 1.88 and the content of V2O5 enriched from 0.5% to 2.51%. In addition, V(IV) was partially reduced to V(III) by adding hydrazine hydrate in an amount of 10% by mass. V(IV) migrated from the liquid phase to the alkali leaching slag, and the recovery of vanadium increased from 89.48% to 94.43%. All the obtained results suggest an efficient process for separation and extraction of vanadium and silicon. |
| WOS关键词 | TECHNOLOGY |
| 资助项目 | Major Science and Technology Program for Water Pollution Control and Treatment[2015ZX07205-003] ; China Ocean Mineral Resources Research and Development Program[DY125-15-T-08] |
| WOS研究方向 | Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000464059100005 |
| 出版者 | EDP SCIENCES S A |
| 资助机构 | Major Science and Technology Program for Water Pollution Control and Treatment ; China Ocean Mineral Resources Research and Development Program |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/28245]  |
| 专题 | 中国科学院过程工程研究所 |
| 通讯作者 | Feng, Yali |
| 作者单位 | 1.Univ Sci & Technol Beijing, Sch Civil & Resource Engn, Beijing 100083, Peoples R China 2.Chinese Acad Sci, Inst Proc Engn, Natl Key State Lab Biochem Engn, Beijing 100190, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wu, Hao,Feng, Yali,Zhang, Heng,et al. The process of vanadium migration and silicon extraction by alkaline leaching from high silicon stone coal under reduction conditions[J]. METALLURGICAL RESEARCH & TECHNOLOGY,2019,116(3):7. |
| APA | Wu, Hao,Feng, Yali,Zhang, Heng,&Li, Haoran.(2019).The process of vanadium migration and silicon extraction by alkaline leaching from high silicon stone coal under reduction conditions.METALLURGICAL RESEARCH & TECHNOLOGY,116(3),7. |
| MLA | Wu, Hao,et al."The process of vanadium migration and silicon extraction by alkaline leaching from high silicon stone coal under reduction conditions".METALLURGICAL RESEARCH & TECHNOLOGY 116.3(2019):7. |
入库方式： OAI收割
来源：过程工程研究所
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