MATEC Web of Conferences
Volume 11, 2014International Congress on Materials & Structural Stability
|Number of page(s)||6|
|Section||Materials & Pathologies|
|Published online||28 April 2014|
Characterization of Moroccan coal waste: valorization in the elaboration of the Portland clinker
1 Laboratoire de Physico-Chimie des Matériaux Inorganiques et Organiques, Université Mohammed V Agdal, Ecole Normale Supérieure Rabat Maroc
2 Laboratoire de chimie du solide appliquée, Université Mohammed V Agdal, Faculté des sciences Rabat Maroc
Coal exploited in the mine of Jerada (northeast of Morocco) was accompanied by large quantities of waste. The purpose of this work is to characterize this waste with the aim of its use as a material for civil engineering. Mineral and chemical investigations on this waste in the raw state, and at different temperature of heat treatments, were carried out by various methods: X-ray fluorescence, X-ray diffraction, infrared spectroscopy. These analyzes showed that the studied waste, contain essentially a mineral part formed by silica and various clays, as well as coal’s residues. The thermal investigation of waste, by differential scanning calorimetry (DSC), revealed an exothermic phenomenon attributed to the combustion of coal residues. Other phenomena were noted on the thermograms due to the mineral part transformations. In this analysis a comparison was also made with pure coal. These characteristics of coal waste encourage studying its development in reducing energy consumption in the Portland cement manufacture. Mixtures of waste with limestone or with raw cement materials were studied, and the resulting products were analyzed by different methods.
Key words: coal / waste / clay / chemical / thermal / characterization
© Owned by the authors, published by EDP Sciences, 2014
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 2.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.