Abstract:
This research work on the identification and physicochemical characterization of clay quarries used for the production of biochar in Faranah, Republic of Guinea, constitutes a basis for the exploitation of the national reserves of clay used in the ceramic industry. The aim of this research is to develop these sources of exploitation in the Faranah Region. The characterization of these clay quarries was made on the basis of thermal analysis and chemical mineralogical method. These analyzes, carried out on samples from the four (4) clay quarries, reveal that these samples consist essentially of silica (38%), aluminum (14%) and calcium oxide (14%) on average., an average content of about (66%). Furthermore, the content of alkali and alkaline earth oxides is low. Thermogravimetric studies allowed us to follow the evolution of the sample mass as a function of temperature and to establish an idea on the appropriate cooking program. Technological tests have enabled us to highlight certain characteristics, for which the maximum plasticity index of the clay tested is 35%. This study could provide a basis for using the material (clay) for the ceramic industry in Guinea. Also, to serve as a binder for the production of biochar used as another efficient energy source by households.
Keywords: Identification, Characterization, Physicochemical, Clay, Biochar, Guinea.