|
| Preparation of High Purity Vanadium Pentoxide by Urea Precipitation |
|
Received:January 15, 2018
Revised:January 17, 2018
Accepted:January 22, 2018
Published Online:June 15, 2018
|
| View Full Text View/Add Comment Download reader |
| DOI：doi：10.3969/j.issn.1007-7545.2018.07.013 |
| KeyWord:urea; vanadium precipitation; high purity vanadium pentoxide |
| Author | Institution |
| Zhang Liuhong |
武汉科技大学 钒资源高效利用湖北省协同创新中心 湖北省页岩钒资源高效清洁利用工程技术研究中心 |
| Zhang Yimin |
武汉科技大学 钒资源高效利用湖北省协同创新中心 湖北省页岩钒资源高效清洁利用工程技术研究中心 资源与环境工程学院 |
| Liu Tao |
武汉科技大学 钒资源高效利用湖北省协同创新中心 湖北省页岩钒资源高效清洁利用工程技术研究中心 资源与环境工程学院 |
| Huang Jing |
武汉科技大学 钒资源高效利用湖北省协同创新中心 湖北省页岩钒资源高效清洁利用工程技术研究中心 资源与环境工程学院 |
| Zhang Guobin |
武汉理工大学 资源与环境工程学院 |
| Yang Yadong |
武汉科技大学 钒资源高效利用湖北省协同创新中心 湖北省页岩钒资源高效清洁利用工程技术研究中心 资源与环境工程学院 |
|
| Hits: 2091 |
| Download times: 2369 |
| Abstract: |
| High purity vanadium pentoxide was prepared with urea as precipitant. Effects of vanadium precipitation time, vanadium precipitation temperature and urea addition on vanadium precipitation were investigated. The results indicate that prolonging vanadium precipitation time, raising vanadium precipitation temperature and increasing ammonium addition coefficient can effectively improve vanadium precipitation rate and product purity. Vanadium precipitation rate is 93.57% with purity of calcined product of 99.57% (while purity of ammonia precipitated vanadium product is only 95.42%) under the conditions including precipitation time of 6h, precipitation temperature of 98 ℃, and urea addition coefficient of 6.67. The product meets the metallurgical industry standard. Compared with product of precipitation with ammonia, the product precipitated by urea has higher crystallinity and more homogeneous morphology. |
| Close |