Fe2O3 hematite quantity increase in quartz sand by heat treatments

Fe2O3 hematite quantity increase in quartz sand by heat treatments

Ana COTAI, Traian Florin MARINCA, Florin POPA

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Abstract. Heat treatments were performed on the quartz sand to increase the quantity of Fe2O3 hematite phase. The heat treatments were performed on the as-received sand samples. The heating temperatures were chosen in the range of 120-600 °C and the time durations in the range of 1-24 h. The sand phases evolution on the temperature was followed by differential scanning calorimetry (DSC). Identification of the phases was realized by X-ray diffraction. The modifications of the iron quantity and distribution in the sand particles were identified by Energy Dispersive X-ray Spectroscopy (EDX) analyses. An optimum temperature/time for the annealing was identified, leading to highest Fe2O3 content. Testes for magnetic separation were performed to validate the method.

Quartz sand, Milled sand, Heat treatments, Hematite (Fe2O3)

Published online 11/5/2018, 10 pages
Copyright © 2018 by the author(s)
Published under license by Materials Research Forum LLC., Millersville PA, USA

Citation: Ana COTAI, Traian Florin MARINCA, Florin POPA, ‘Fe2O3 hematite quantity increase in quartz sand by heat treatments’, Materials Research Proceedings, Vol. 8, pp 105-114, 2018

DOI: http://dx.doi.org/10.21741/9781945291999-12

The article was published as article 12 of the book Powder Metallurgy and Advanced Materials

Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.

[1] M. F. M. dos Santos, E. Fujiwara, E. A. Schenkel, J. Enzweile, C. K. Suzuki, Quartz resources in the Serra de Santa Helena formation, Brazil: A geochemical and technological study, J. South Am. Earth Sci. 56 (2014) 328-338. https://doi.org/10.1016/j.jsames.2014.09.017
[2] S. Beddiaf, S. Chihi, Y. Leghrieb, The determination of some crystallographic parameters of quartz, in the sand dunes of Ouargla, Algeria, J. Afr. Earth. Sci. 106 (2015) 129–133. https://doi.org/10.1016/j.jafrearsci.2015.03.014
[3] Information on https://owlcation.com/stem/Beaches-Unusual-Colour/
[4] T. R. Boulos, A. Yehia, M. B. Morsi, S. S. Ibrahim, High quality fused silica from egyptian silica sand, Int. J Sci. Eng. Investigation. 6 (2017) 160-166.
[5] M. Bounouala, A. S. Chaib, Removal of iron from sandstone by magnetic separation and leaching: case of el-aouana deposit (Algeria), Mining Sci. 22 (2015) 33−44.
[6] F. Du, J. S. Li, X. X. Li, Z. Z. Zhang, Improvement of iron removal from silica sand using ultra-assisted oxalic acid, Ultrason. Sonochem, 18 (2011) 389–393. https://doi.org/10.1016/j.ultsonch.2010.07.006
[7] N. N. Konev, Magnetic Enrichment of quartz sands. Analysis of separator operation, Glass Ceram. 67 (2010) 132-137. https://doi.org/10.1007/s10717-010-9246-z
[8] N. N. Konev and I. P. Salo, Removal of iron-containing impurities by magnetic separation, Glass Ceram. 56 (1999) 32 – 33. https://doi.org/10.1007/BF02681401
[9] S.G.Zihms, C.Switzer, J. Irvine, M. Karstunen, Effects of high temperature processes on physical properties of silica sand, Eng. Geology 164 (2013) 139-145. https://doi.org/10.1016/j.enggeo.2013.06.004
[10] V. Brotons , R. Tomas, S. Ivorra, J.C. Alarcon, Temperature influence on the physical and mechanical properties of a porous rock: San Julian’s calcarenite, Eng. Geology 167 (2013) 117–127. https://doi.org/10.1016/j.enggeo.2013.10.012
[11] ASM diagrams (CD).