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| Scandium Pre-enrichment from Red Mud Sulfuric Acid Curing Leaching Solution |
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Received:July 06, 2018
Revised:July 06, 2018
Accepted:July 10, 2018
Published Online:October 16, 2018
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| DOI：doi：10.3969/j.issn.1007-7545.2018.11.009 |
| KeyWord:red mud; extraction; orthogonal test; scandium; pre-enrichment |
| Author | Institution |
| XU Lu |
中国地质科学院矿产综合利用研究所 |
| LUO Yuzhi |
中国地质科学院矿产综合利用研究所 |
| SHI Guangda |
中国地质科学院矿产综合利用研究所 |
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| Abstract: |
| Orthogonal test was applied to investigate extraction performance of scandium in red mud curing leaching solution. Scandium enrichment was prepared by secondary stripping. The results show that scandium extraction rate is 99.27% under the optimum conditions including P204 concentration of 10%, O/A=1/15 and extraction time of 5 min. Stripping rate of Sc with 2.5 mol/L NaOH as stripping agent is 98.34% under the conditions including O/A=1/1.5, stripping time of 10 min, reaction temperature from 95 ℃ to slight boiling of water phase, and stripping frequency of twice. The obtained initial enrichment with Sc content of 0.86% can be used to produce high-purity scandium oxide products. |
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