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有色金属(冶炼部分):2013,(11):50-54
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微硅粉杂质促进水玻璃凝胶机理的研究
支歆
(北京科技大学,钢铁冶金新技术国家重点实验室)
Study on Promotion Mechanism of Impurities in Silica Fume on Water Glass Gel
ZhiXin
(State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing)
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投稿时间:2013-08-07     修订日期:2013-08-08     录用日期:2013-08-09     网络发布日期:2013-10-25
中文摘要: 考察微硅粉原料中的杂质以及外加客盐对硅粉溶解法制备水玻璃凝胶的影响。结果表明,客盐和各种氧化物杂质对溶出水玻璃影响的程度大小依次为CaO>NaCl>MgO>Fe2O3;客盐NaCl的加入降低了胶粒的平衡电势加速了老化,CaO、Fe2O3与MgO则是通过络合作用快速产生凝胶,并对凝胶老化的加速也有一定影响。
中文关键词: 凝胶  微硅粉  收集率  水玻璃
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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基金项目:国家高技术研究发展计划(863计划)项目(2012AA06A118)
引用文本:
支歆,郭占成,林荣毅,余锦涛.微硅粉杂质促进水玻璃凝胶机理的研究[J].有色金属(冶炼部分),2013(11):50-54.
ZhiXin,GUO Zhan-cheng,LIN Rong-yi,YU Jin-tao.Study on Promotion Mechanism of Impurities in Silica Fume on Water Glass Gel[J].Nonferrous Metals (Extractive Metallurgy),2013(11):50-54.

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