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 CHICINAȘdownload PDF
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.
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
The article was published as article 11 of the book Powder Metallurgy and Advanced Materials
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