|
| Study on Acid Leaching Technology of Black Shale Uranium Vanadium Ore |
|
Received:November 13, 2020
Revised:November 23, 2020
Accepted:November 25, 2020
Published Online:March 24, 2021
|
| View Full Text View/Add Comment Download reader |
| DOI：doi：10.3969/j.issn.1007-7545.2021.04.012 |
| KeyWord:black shale; uranium vanadium ore; acid leaching; iron removal |
| Author | Institution |
| JIA Xiu-min |
核工业北京化工冶金研究院 |
| HUANG Yong |
核工业北京化工冶金研究院 |
| CHEN Tian-bao |
核工业北京化工冶金研究院 |
| LIU Hui-wu |
核工业北京化工冶金研究院 |
| LIU Zhong-chen |
核工业北京化工冶金研究院 |
| LIU Zhi |
核工业北京化工冶金研究院 |
| XIANG Qiu-lin |
核工业北京化工冶金研究院 |
|
| Hits: 1805 |
| Download times: 1977 |
| Abstract: |
| Uranium and vanadium were extracted from a black shale through acid curing leaching process, and removal of Fe(Ⅲ) during leaching was studied. The results show that the ore can be treated under the optimum curing conditions of acid dosage of 12%, curing temperature of 90 ℃, aging time of 2.5 h and ore size of -0.15 mm, and then leached by water for 1 h at room temperature, Fe(Ⅲ) is removed under the conditions of sodium sulfate adding amount of 0.6%, precipitation temperature of 95 ℃, precipitation time of 0.5 h and leaching terminal pH value of 1.2. Under the above steps and conditions, uranium leaching rate is more than 92%, vanadium leaching rate is more than 68%, and removal rate of Fe(Ⅲ) is more than 75%. This process can effectively reduce reagent consumption in subsequent metal separation and wastewater treatment process. |
| Close |
|
|
|