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| STUDY ON PREPARATION OF HIGH-PURITY SILICON DIOXIDE |
| Received:April 25, 2011 |
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| DOI：10.3969/j.issn.1005-7854.2011.03.015 |
| KeyWord:high-purity silicon dioxide; preparation; influencing elements |
| Author | Institution |
| YANG Ni |
Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming ,China |
| YU Xiao-hua |
Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming ,China |
| HE En |
Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming ,China |
| YAO Yun |
Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming ,China |
| HOU Yan-qing |
Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming ,China |
| XIE Gang |
Technology Center of Yunnan Metallurgical Group Co.,Kunming ,China |
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| Abstract: |
| This paper introduces the current situation of high-purity silicon dioxide preparation at home and abroad, and studies the impact of pressure & temperature on silica leaching process, impact of acid & chelating agent on product purity, and impact of acidity & aging condition to silicon dioxide particle size. The results shows that under best process condition, silicon dioxide with purity of 99.9667% and average particle size of 18.37μm can be prepared. |
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