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[1]毛静*,向后奎,陈伟亚.煅烧对微硅粉性能的影响[J].武汉工程大学学报,2014,(07):20-23，29.[doi:103969/jissn16742869201407004]
　MAO Jing,XIANG Hou kui,CHEN Wei ya.Influence of calcinations on performance of silica fume[J].Journal of Wuhan Institute of Technology,2014,(07):20-23，29.[doi:103969/jissn16742869201407004]
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煅烧对微硅粉性能的影响(/HTML)
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《武汉工程大学学报》[ISSN:1674-2869/CN:42-1779/TQ]

卷:
期数:
2014年07期
页码:
20-23，29
栏目:
化学与化学工程
出版日期:
2014-07-31

文章信息/Info

Title:
Influence of calcinations on performance of silica fume
文章编号:
16742869(2014)07002004
作者:
毛静1*; 向后奎2; 陈伟亚1
1. 武汉工程大学化学与环境工程学院，湖北 武汉 430074；2. 武汉工程大学材料科学与工程学院，湖北 武汉 430074
Author(s):
MAO Jing1; XIANG Houkui2; CHEN Weiya1
1.School of Chemistry and Environmental Engineering,Wuhan Institute of Technology,Wuhan 430074,China;2.School of Materials Science and Engineering,Wuhan Institute of Technology,Wuhan 430074,China
关键词:
煅烧; 微硅粉; 游离碳; 白度
Keywords:
calcination; silicon fume; free carbon; whiteness
分类号:
TQ172
DOI:
103969/jissn16742869201407004
文献标志码:
A
摘要:
采用同步热分析法、X射线衍射、扫描电镜、比表面积和白度等测试手段对煅烧前后的微硅粉样品进行了分析.实验结果表明：在600 ℃、4 h煅烧时微硅粉的除碳效果最佳，煅烧后样品中碳的质量分数由1.96%下降到0.65%；样品主要成分二氧化硅晶体结构并未变化，仍旧为非晶态，煅烧后仍出现了碳化硅的特征峰，表明煅烧去除的主要为游离碳；微观形貌分析表明，煅烧后样品微观颗粒粒径在长大，片状物质的含量却明显减少，但是组成颗粒的一次粒子长大并不明显；比表面积测试表明煅烧前后比表面积变化不大，但白度由31.04提高到70.14.
Abstract:
The uncalcined and calcined samples were researched by simultaneous thermal analysis,Xray diffraction,scanning electron microscope,BrunnerEmmetTeller measurements,whiteness and other tests.As a result,the optimal calcination process is 600 ℃,4 h.The content of free carbon in silica fume drops from 1.96% to 0.65%,and the crystal structure of the main compositionsilicon dioxide still is amorphous.The characteristic peak of silicon carbide appears both in uncalcined and calcined ,which shows that the calcination method is just used to remove the free carbon.Microstructure analysis shows that the size of micro particles of the calcined samples grows up and the content of the flake material decreases significantly,but the primary grains do not get bigger.Area results show that the surface area of the samples is not changed.However,the whiteness increases from 31.04 to 70.14.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期：20140414作者简介：毛静（1985），女，湖南岳阳人，助理工程师，硕士.研究方向：环境工程.*通信联系人.
更新日期/Last Update: 2014-08-20