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高温热处理叶腊石呈色变化机制初探 被引量：2

The Coloring Change Mechanism of Pyrophyllite after High-Temperature Heating
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摘要 采用反射光谱﹑化学分析﹑差热分析﹑傅里叶红外光谱及场发射扫描电镜等对叶腊石原矿粉体及其不同温度下煅烧后粉体的呈色变化机制进行研究。结果表明:随着煅烧温度的提高,叶腊石粉体的呈色出现由灰白至淡红并最终呈现雪白的渐变特征,相比于原粉的片状形貌特征,不同温度煅烧粉体微结构无明显改变,叶腊石原粉在高温煅烧后的呈色与粉体微结构及其中所含有机物成分无直接联系。 The coloring mechanism of pyrophyllite before and after heating were investigated respectively by reflection spectra, chemical analysis, differential thermal analysis （DTA）, Fourier transform Infrared spectroscopy （FT-IR） and field emission-scanning electronic microscope （FE-SEM）. The results show that the color of pyrophyllite powder changes from grayish white to light pink and turns to the color of snow-white finally with increasing firing temperature. Compared to the original pyrophyllite, the laminal microstructure of pyrophyllite has no changed after high-temperature heating, and its microstructure and organic composition do not play a role in the coloring of the pyrophyllite.
作者 严俊 张俭 李娟 盛嘉伟
机构地区 浙江工业大学化学工程与材料学院
出处 《高校化学工程学报》 EI CAS CSCD 北大核心 2013年第3期406-410,共5页 Journal of Chemical Engineering of Chinese Universities
基金 浙江省科技厅优先主题专项(2007C11104-2) 浙江省研究生教育创新基金(1004)
关键词 叶腊石 热处理 呈色机制 微结构 铁的赋存状态 类质同象置换 pyrophyllite heat treatment coloring mechanism microstructure occurrence of ironisomorphic replacement
分类号 P574 [天文地球—矿物学]
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参考文献16

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共引文献33

同被引文献30

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引证文献2

二级引证文献4

高校化学工程学报
2013年 第3期

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