水庫淤泥添加鈉鈣離子製備結晶玻璃

林辰育

doi:10.6844/NCKU.2013.01197

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水庫淤泥添加鈉鈣離子製備結晶玻璃

Manufacturing glass ceramic from water reservoir sediment with added sodium and calcium ions

林辰育 , Masters　　Advisor：黃紀嚴　　

繁體中文 DOI： 10.6844/NCKU.2013.01197

水庫淤泥；結晶玻璃；陶瓷； water reservoir sediment ； glass ceramic

Abstract │ Reference (32) │ Altmetrics

Abstract 〈TOP〉

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In Taiwan, the sediment in water reservoir has a precipitates of mean amount of 14 million tons annually. It shortens the usage life of water reservoir heavily. If a suitable recycling method is found, it can not only extend the life of reservoirs but also raise the economic value of the sediment. Due to the geologic condition, the composition in the mountain areas of Taiwan includes shale and clay minerals, which is washed into the reservoir and mixed with the sludge. The components include silicon, alumina and other types of alkali, alkaline earth elements, such as sodium, potassium, calcium and magnesium. Calcium oxide and sodium hydroxide are added as modifier in the experiment. 
At the first stage of the experiment, DTA diagram shows that the temperature of each point decreases as the more modifier added. Also the XRD patterns shows that one of the crystal phases is gehlenite and the other is diopside coexisting with augite. The second stage was the calculation of the kinetic parameters and the active energy of crystallization at different heating rate. Also, the manufacture of glass ceramics using different temperature during the heat treatment and different holding time. 
The relationship of the kinetic parameters and the cross-section diagrams of the samples shows that gehlenite is surface crystallization; while the diopside coexisting with augite is bulk crystallization, which is two-dimensional growth of crystal. The reason causing gehlenite crystal on the surface may be the active energy of bulk crystallization was too high to reach. However, diopside coexisting with augite had reached the active energy of bulk crystallization. The SEM diagrams show that both of the crystallization of them are dendrite, and the crystalline length increase as the temperature of heat treatment increase or the longer of the holding time. Also, the chemical endurance and bulk density increase with the above-mentioned conditions, but the water absorption and the porosity decrease, it may be cause by the better crystallinity.

Reference ( 32 ) 〈TOP〉

[4] 陳蒼霈，「燃煤底灰添加碳酸鎂製造玻璃陶瓷結晶行為之研究」，國立成功大學資源工程所，碩士論文，(2003.7)
連結：
[5] 葉仁君，「燃煤底灰添加碳酸鋰轉化結晶玻璃其熱處理程序之研究」，國立成功大學資源工程所，碩士論文，2004.7.。
連結：
[7] Vogel, W.,”Chemistry of glass,”Am. Ceram Soc.,(1985),38。
連結：
[10] Strnad,Z.,”Glass-Ceramics material”,1986,Elseriver Science Publishing Company, Inc.
連結：
[12] Kazumasa Matusita, Takayuki Komatsu, Ryosuke Yokota, “Kinetics of non-crystallization process and activation energy for crystal growth in amorphous,” Journal of Materials Science 19 (1984) 291-296
連結：

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