Experimental study of raw material from Moroccan oil shale and coal waste and their reuse in cement industry

This study aims to characterize four geological layers (t, y, x, m) of moroccan timahdit’s oil shale and of jerada coal waste to evaluate their suitability as alternative materials for cement manufacturing. mineralogical and chemical characterizations of these materials in a raw state, and at different heat treatment’s temperature, were carried out by various methods: x-ray fluorescence, x-ray diffraction, infrared spectroscopy and thermogravimetric analysis (dsc/tga). the dsc/tga analysis confirmed the presence of organic matter in oil shale with a combustion heats between 3459 j/g (layer m) and 5368 j/g (layer y), while coal waste has less heat power with 889.2 j/g. chemical and mineralogical composition of the studied materials and their thermal behavior indicate that these materials would be energetically beneficial in the production process of portland clinker if they are used as alternative fuel. in addition, residues after oil shale layers burning can be used as pozzolan or hydraulic materials in cement, since they have shown a good activity.