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| Study on Promotion Mechanism of Impurities in Silica Fume on Water Glass Gel |
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Received:August 07, 2013
Revised:August 08, 2013
Accepted:August 09, 2013
Published Online:October 25, 2013
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| DOI：10.3969/j.issn.1007-7545.2013.11.016 |
| KeyWord:gel; silica fume; collection rate; water glass |
| Author | Institution |
| ZhiXin |
北京科技大学，钢铁冶金新技术国家重点实验室 |
| GUO Zhan-cheng |
北京科技大学，钢铁冶金新技术国家重点实验室 |
| LIN Rong-yi |
中国科学院过程过程研究所 |
| YU Jin-tao |
北京科技大学，钢铁冶金新技术国家重点实验室 |
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| Abstract: |
| The effects of impurities in silica fume powders and guest salt in addition on preparation of water glass gel by dissolving silica fume were investigated. The results show that the influence sequence of guest salt and various oxides on water glass gel presents as CaO>NaCl>MgO>Fe2O3. Guest salt NaCl mainly accelerates aging by reducing the equilibrium potential of colloidal particles, while CaO, Fe2O3 and MgO can quickly produce gel through complexation, and have certain effect on acceleration of gel aging. |
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