|
| Study on Preparation of Ferric Vanadate from Titanium Tetrachloride Exquisite Tailings |
|
Received:September 13, 2017
Revised:September 18, 2017
Accepted:September 19, 2017
Published Online:February 11, 2018
|
| View Full Text View/Add Comment Download reader |
| DOI：10.3969/j.issn.1007-7545.2018.03.015 |
| KeyWord:titanium tetrachloride refined tailings; ferric vanadate; acid leaching; separation; crystallization |
| Author | Institution |
| Qu Jinwei |
中国科学院过程工程研究所 |
| Ma Na |
河南晋开化工投资控股集团有限责任公司 |
| Zhang Yang |
中国科学院过程工程研究所 |
|
| Hits: 1843 |
| Download times: 2225 |
| Abstract: |
| Titanium tetrachloride refined tailings were acid leached. Effects of L/S, hydrochloric acid dosage, leaching temperature, and leaching time on vanadium leaching rate were investigated. The results show that vanadium leaching rate is 97.1% under the optimum conditions including L/S=2︰1, volume ratio of hydrochloric acid (38%) to water of 1.1︰1, leaching temperature of 40 ℃, and leaching time of 30 min. Vanadium precipitation rate is 95.4% from acid leaching solution under the optimum conditions including precipitation temperature of 40 ℃, initial concentration of vanadium in acid leaching solution of <6 g/L, pH value of endpoint of 14~2.0, and dosage of H2O2 of 5~6 times of theoretical quantity. Ferric vanadate is prepared from precipitate by calcining at 550 ℃ for 3 h. Both vanadium precipitation slag and wastewater neutralization slag are suitable for permanent heap which meet the requirement of GB18599-2001 for general industrial solid waste. |
| Close |
|
|
|