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| Antimony Oxidation Removal from Arsenic Alkali Residue Leaching Solution |
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Received:March 06, 2015
Revised:March 27, 2015
Accepted:March 30, 2015
Published Online:July 17, 2015
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| DOI：doi：10.3969/j.issn.1007-7545.2015.08.002 |
| KeyWord:arsenic alkali residue; antimony oxidation removal; valence state regulation |
| Author | Institution |
| Wan Wenyu |
湖南有色金属研究院 |
| CHEN Wei |
湖南有色金属研究院 |
| Huang Shunhong |
湖南有色金属研究院 |
| SUN Jian-de |
湖南有色金属研究院 |
| Li Qian |
湖南有色金属研究院 |
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| Abstract: |
| The effects of addition method and amount of hydrogen peroxide, reaction temperature, and oxidation time on antimony oxidation removal from leaching liquor of arsenic alkali residue, as well as relationship between potential and antimony removal rate were investigated. The results show that purity of sodium antimonate is 91.83% with antimony removal rate of 95% above under the optimum conditions including room temperature, total oxidation time of 60 min, volume mass of hydrogen peroxide solution of 0.6% of lixivium (equivalent to 17.65 mL for one gram antimony) fed at first 20 minutes, and potential of reaction endpoint of -550~-450 mV. The obtained products of sodium antimonate meet common market quality requirements. The key technology breakthrough was made in reduction of antimony from leaching solution by valence state regulation. |
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