文章基本信息

标题：Recycling of Moroccan coal gangue in the elaboration of a Portland clinker
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作者：Belkheiri D. ; Diouri A. ; Taibi M. 等
期刊名称：Journal of Materials and Environmental Science
印刷版ISSN：2028-2508
出版年度：2015
卷号：6
期号：6
页码：1570-1577
出版社：University of Mohammed Premier Oujda
摘要：We investigated the possibility of recycling and recovery of Moroccan coal gangue (coal mine of Jerada). The analysis of the waste showed that it is formed essentially of silica and clays. We were interested to elaborate a Portland clinker from mixtures composed of limestone and coal gangue. A preliminary study was focused on the optimization of the composition of the mixture. We have taken as a reference the clinker synthesized with the raw materials of a cement plant. The products obtained were analyzed by X-ray diffraction and infrared spectroscopy. They contained essentially the main mineralogical phases of Portland clinker. A study of the hydration of these clinkers was carried out using a micro-calorimetry technique and the hydrated products were characterized by X-ray diffraction. The results showed that the clinker elaborated using the coal waste have the same properties of the reference one. So we can provide an opportunity for recycling and recovery of coal gangue in the Portland clinker development. In addition, it was possible to obtain an energy saving resulting from the combustion of coal residues contained in the gangue
关键词：coal gangue; recovery; clinker; hydration