Study on the particle size reduction by milling of quartz sand for magnetic separation

Study on the particle size reduction by milling of quartz sand for magnetic separation

Florin POPA, Loredana COPIL, Victor CEBOTARI, Traian Florin MARINCA, Bogdan Viorel NEAMȚU, Niculina Argentina SECHEL, Ionel CHICINAȘ

Abstract. For being used in crystal glass industry, the iron content of quartz sand must be under 0.09 %. If the reserve contains a higher quantity, methods for iron reduction must be used. Usually the iron phases are present in large quantity in the small particle size fraction. For reducing the sand grain size, milling was performed on a planetary ball mill. Different ball/powders ratio were studied for determining an optimum particle size vs. milling duration. The particle size was determined for each milling experiment. Using Energy Dispersive X-ray spectroscopy (EDX), the elemental distribution for the particle was quantified. By X-ray diffraction, the phase distribution of the sand was analyzed and correlated with the chemical composition. The phases are changing their ratio versus the grain size. The main phase is SiO2 as quartz, accompanied by minor phases: iron oxides (Fe3O4, Fe2O3, and FeTiO3) and some oxide of Al, Na, Ca, and K. Testes for magnetic separation were performed for validating the method.

Keywords
Quartz sand, Milling, Electron microscopy, Particle size

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: Florin POPA, Loredana COPIL, Victor CEBOTARI, Traian Florin MARINCA, Bogdan Viorel NEAMȚU, Niculina Argentina SECHEL, Ionel CHICINAȘ, ‘Study on the particle size reduction by milling of quartz sand for magnetic separation’, Materials Research Proceedings, Vol. 8, pp 95-104, 2018

DOI: https://dx.doi.org/10.21741/9781945291999-11

The article was published as article 11 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.

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