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| Removal of Calcium in Sc2O3 Product by Immersion with Dilute Hydrochloric Acid |
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Received:April 02, 2016
Revised:April 18, 2016
Accepted:April 18, 2016
Published Online:August 19, 2016
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| DOI：doi：10.3969/j.issn.1007-7545.2016.09.011 |
| KeyWord:scandium oxide; dilute hydrochloric acid; immersion; calcium removal |
| Author | Institution |
| FAN Yan-jin |
广西冶金研究院有限公司 |
| ZHANG Jian-fei |
广西冶金研究院有限公司 |
| NONG Jia-bei |
广西冶金研究院有限公司 |
| DENG Hong-hua |
广西冶金研究院有限公司 |
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| Abstract: |
| Calcium in Sc2O3 product was removed by immersion with dilute hydrochloric acid. Effects of dilute hydrochloric acid concentration, immersion time, L/S, immersion temperature, and dosage of CN reagent on calcium removal rate and scandium loss ratio were investigated. The results show that the optimum conditions include dilute hydrochloric acid concentration of 1.2 mol/L, immersion at room temperature for 60 min, L/S=2︰1, and dosage of CN reagent of 4% mass fraction of Sc2O3. Sc2O3 product can meet the requirement of Grade 161040 of GB/T 13219-2010 standard after twice immersion of dilute hydrochloric acid. |
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