期刊名称：Journal of Materials and Environmental Science
印刷版ISSN：2028-2508
出版年度：2017
卷号：8
期号：8
页码：2738-2746
出版社：University of Mohammed Premier Oujda
摘要：This work concerned the physicochemical characterization of an industrial waste which isthe pyrrhotite ash from south west of Morocco. A physical and hydrodynamic analyzeswere carried out, namely loss on ignition, moisture content, pH, solubility, density andgranulometry, as well as chemical, morphological and mineralogical analyzes by SEM,XRF, XRD,FTIR and TGA/DTA. The results show that the pyrrhotite ash is a nonhygroscopic waste with a moisture content equal to 3.4%. This weak hygroscopiccharacter is mainly attributed to the spherical morphology of the waste particles. Thedistribution of the particle size vary from less than 1 μm to more than 125 μm and morethan three quarter of particles have size less than 20 μm. So, pyrrhotite ash could be usefulto produce materials with high density for heat accumulation materials, constructionmaterials…Furthermore, the chemical composition reveals that the pyrrhotite ash is an iron rich wastewith 64.9% of hematite Fe2O3. It contains 81.91% of Fe2O3 SiO2 Al2O3 and 0.526% ofCaO.One the other hand, it is shown that pyrrhotite ash is a stable material at high temperaturesuntil 1000°C and also at neutral pH.At the end, all the cited results highlight the possibility of making the pyrrhotite ash veryuseful in various fields as building construction, heat accumulation materials, waste watertreatment.
