Dephosphorization of Gara Djebilet iron deposit (Algerian Sahara) using sulphurous mineral thermal water
DOI:
https://doi.org/10.17159/Abstract
This study is dedicated to structure and micro-structure analysis with chemical characterization of oolitic iron ore of Gara Djebilet region located in the south-western region of Algeria,characterized with high solar irradiation and a very important geothermal potential. Experimental tests were carried out to identify the phosphorus composition in iron oxides of Gara Djebilet. X-ray Powder Diffraction, leitz polarizing microscope analysis and Scanning Electron Microscope (SEM) technique with EDAX APEX software program were used for data analysis of the compositional characterization of materials and for the determination of the distribution of phosphorus and other impurity elements. Two samples, A(hematite-dominated) and B(Magnetite-dominated), were identified according to their morphology, weight and colors. Obtained results showed that oolitic iron stone is mixed with different and several particles at different concentrations. Phosphorus is substitute by weight in the sample A, especially in goethite, in higher quantity (0.6%) than in the sample B (0.3%). In addition, the preliminary study of sulphurous mineral thermal water leaching with solar thermal eco-effective pretreatment system, is suggested as a promising solution for reducing phosphorus. The preliminary results of phosphorus removal from 500g of the simple A is very favourable, it reached the value of 0.13 % in total P content.
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