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| Discussion on Purification and Preparation of Refined Iodine from Iodine Products |
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Received:January 15, 2010
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| DOI：DOI：10.3969/j.issn.1007-7545.2011.01.010 |
| KeyWord:Fluorine；Iodine solution；Flocculent purificatio |
| Author | Institution |
| XIAN Heng |
贵州大学材料与冶金学院 |
| WANG Qin |
贵州大学材料与冶金学院 |
| SHE Shun-li |
贵州大学材料与冶金学院 |
| SUN Ke-ping |
贵州大学材料与冶金学院 |
| CHEN Xiao-hu |
贵州大学材料与冶金学院 |
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| Abstract: |
| The technique and mechanism of defluorination and removal of other impurity from iodine products recycled in phosphate resource is discussed. The suitable technological conditions and effective methods of defluorination and removal of arsenic of iodine solution are found through orthogonal experiments.Under the conditions of pH = 7 or so and dosing 50 g/L aluminum salts and 5 g/L calcium salts, the defluorination ratio closed 99% and the content of Pb, Hg, As can also below 1 mg/kg in refined iodine. The iodine contents in refined iodine basically reached≥99.5%. |
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