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TitleMineralogical and chemical investigation of Tunisian phosphate washing waste during calcination
Author(s)Dabbebi, R.
Aguiar, J. L. Barroso de
Samet, B.
Baklouti, S.
Phosphate washing waste
Issue dateFeb-2019
PublisherSpringer Verlag
JournalJournal of Thermal Analysis and Calorimetry
CitationDabbebi R., Aguiar J. B., Samet B., s. Baklouti Mineralogical and chemical investigation of Tunisian phosphate washing waste during calcination, Journal of Thermal Analysis and Calorimetry, Vol. 137, pp. 1827 - 1840, doi:10.1007/s10973-019-08057-3, 2019
Abstract(s)Phosphate washing waste (PWW) is one of the wastes generated by the phosphate mine with a very high amount. This waste was investigated in this work to study the effect of the calcination of the PWW at four different temperatures 600 oC, 700 oC, 800 oC and 900 oC on its mineralogical and chemical composition. The samples were investigated by X-ray powder diffraction, Fourier transform infrared, differential scanning calorimetry and thermogravimetric analysis, solidstate magic angle spinning nuclear magnetic resonance of 29Si, 27Al and 31P and scanning electron microscope. The results show that the PWW presents a complex system and it suffers a significant change on its mineralogical and chemical composition after calcination. It reveals the presence of carbonate, natural zeolite, fluorapatite, quartz and clay. After calcination, the waste shows the disappearance of some of these phases and the appearance of others and some other phases remain steady.
Publisher version
AccessEmbargoed access (2 Years)
Appears in Collections:C-TAC - Artigos em Revistas Internacionais

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