Thermal transformations of floor tile pastes containing petroleum waste

Pinheiro B.C.A.; Faria Jr. R.T.; Holanda J.N.F.

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Thermal transformations of floor tile pastes containing petroleum waste

机译：Thermal transformations of floor tile pastes containing petroleum waste

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This study focuses on the thermal and mineralogical transformations of floor tile pastes containing petroleum waste. The tile pastes prepared by the dry process contain up to 10 wt of petroleum waste in replacement of kaolin. Thermal and mineralogical changes occurring during firing were characterized by differential thermal analysis, thermogravimetry analysis, derivative thermogravimetry, dilatometric analysis, open photoacoustic cell technique, X-ray diffraction, and scanning electron microscopy. During heating an endothermic transformation within the 511.4-577.5 C range and an exothermic transformation within the 997.8-1001.6 C range were identified. The endothermic transformation can be mainly attributed to the dehydroxylation of kaolinite. The exothermic transformation is mainly associated with the crystallization of primary mullite. TG measurements indicate that the total mass loss of the floor tile pastes is dependent on the amount of petroleum waste addition. It was found that the replacement of kaolin with petroleum waste, in the range up to 10 wt, influenced the thermal expansion-shrinkage curve. In addition, the floor tile pastes containing petroleum waste have low values of thermal diffusivity.

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来源
《Journal of thermal analysis and calorimetry》 |2013年第1期|527-533|共7页
作者
Pinheiro B.C.A.; Faria Jr. R.T.; Holanda J.N.F.;
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作者单位

Laboratory of Advanced Materials, State University of Northern Fluminense, Campos dos Goytacazes, RJ 28013-602, Brazil;

Laboratory of Physical Sciences, State University of Northern Fluminense, Campos dos Goytacazes, RJ 28013-602, Brazil;

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原文格式 PDF
正文语种英语
中图分类物理化学（理论化学）、化学物理学;
关键词
Floor tile; Petroleum waste; Thermal analysis; X-ray diffraction;

Thermal transformations of floor tile pastes containing petroleum waste

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