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| Study on Recycle of Waste Water from Extraction of Rare Earth by N235 |
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Received:February 15, 2016
Revised:February 18, 2016
Accepted:February 23, 2016
Published Online:June 27, 2016
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| DOI：doi：10.3969/j.issn.1007-7545.2016.07.017 |
| KeyWord:N235; rare earth extraction; waste water treatment |
| Author | Institution |
| Zhang Lei |
内蒙古科技大学材料与冶金学院 |
| Liu Zhaogang |
内蒙古科技大学材料与冶金学院 |
| Xu Hui |
内蒙古科技大学材料与冶金学院 |
| Dai Xiaobin |
中国北方稀土集团冶炼分公司 |
| Li Junpin |
中国北方稀土集团冶炼分公司 |
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| Abstract: |
| N235 waste water containing Zn2 and Fe3 from rare earth extraction process was applied as research object. Zn2 and Fe3 ions can be removed at pH=8 from waste water by NaOH precipitant. Under the optimum conditions, the waste water without Zn2 and Fe3 can be recycled in production process. In spite of negative effect of NaCl in waste water on Zn2 and Fe3 removal, quality of rare earth chloride products well completely meets technical requirements. |
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