Evaluation for the Beneficiability of White Silica Sands from the Overburden of Lignite Mine situated in Rajpardi district of Gujarat, India

Abstract

A representative feed sample of White Silica Sand was wet-sieved in order to recover the desired fractions for glass making. BIS specification shows that (–600, +300) μm] fraction [A] should not be more than 50% and (–300, +125) μm fraction [B] should be 50% minimum. The mass percentage of A and B is found to be 29.9 and 70.1% (ratio =1:3.34) which satisfies the size specifications for glass making sand. Hence, this ratio was maintained for all the down stream processing studies. ‘Wet Sieved desired Fraction for White sand’ (WSDFw) was subjected to attrition followed by magnetic separation. Tests at optimum conditions gave a non-magnetic fraction (Silica sand product) which analysed 98.1% silica with 0.09% Fe2O3, 0.13% TiO2 and 0.17 LOI. This is found to be matching with IS specifications for Grade III sand.

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M. Sundararajan, S. Ramaswamy and P. Raghavan, "Evaluation for the Beneficiability of White Silica Sands from the Overburden of Lignite Mine situated in Rajpardi district of Gujarat, India," Journal of Minerals and Materials Characterization and Engineering, Vol. 8 No. 9, 2009, pp. 701-714. doi: 10.4236/jmmce.2009.89061.

Conflicts of Interest

The authors declare no conflicts of interest.

References

[1] Indian Bureau of Mines, Nagpur, , 1993, Quartz and Silica Sand; Bulletin No. 25
[2] Directorate of Mining and Geology, Kerala; 1998. “Report on silica sand”
[3] Bureau of Indian Standards, 1977. IS specification for standard silica sand for raw material testing in foundries, IS:3018-1977, Indian Standard Institution, New Delhi
[4] Bureau of Indian Standards, 1980. IS specification for glass making sands, IS:488-1980, Indian Standard Institution, New Delhi
[5] Ay, N., Arica, E, 2000. “Refining Istanbul’s silica sand”, www.Ceramicbulletin. org, August 06.
[6] Farmer, A.D., Collings, A.F., Jameson, G.J., 2000. The application of power ultrasound to the surface cleaning of silica and heavy mineral sands, Ultrasonics Sonochemistry, 7, pp. 243-247
[7] Taxiarchaou, M., Panias, D., Douni, I., Paspaliaris, I., Kontopoulos, A., 1997. Removal of iron from silica sand by leaching with oxalic acid, Hydrometallurgy, 46, pp.215-227
[8] Wills, B. A. 1998. Mineral processing Technology. Pergamon Press, New York

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