Characterization of Natural Clay Vermiculite, Expanded by Indirect Method for Energy and Microwave

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Abstract:

Vermiculite has a structure consisting of layered silicates surfaces interspersed with layers of water. When the expansion occurs intra lamellar clay water is removed. This paper aims to characterize the Vermiculite clay of Santa Luzia, Paraíba (Brazil) in their natural form, and after thermogravimetric treatments by classic X-ray diffraction analysis, thermal analysis and scanning electron microscopy. The results show that the method of expansion, using the technique of microwave energy is possible, however, the expansion factor is lower when compared to the indirect heating by the thermal expansion of the clay.

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36-39

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June 2015

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© 2015 Trans Tech Publications Ltd. All Rights Reserved

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[1] P. Anadão; L.F. Sato; H. Wiebeck; F.R. Valenzuela-Díaz: Applied Clay Science Vol. 48 (2010), p.127.

DOI: 10.1016/j.clay.2009.12.011

Google Scholar

[2] M. Alexandre, P. Dubois: Mater. Sci. Eng. Vol. 28 (2000), p.1.

Google Scholar

[3] G.F. Walker: Vermiculite minerals: in the X-ray identification and crystal structures of clay minerals. In: Brown, G. (Ed. ), Mineralogical Society, London, p.29–324, (1961).

Google Scholar

[4] S.W. Kingman: The effect of microwave radiation upon the comminution and beneficiation of minerals, PhD (Thesis). Birmingham 1999. University of Birmingham (UK).

Google Scholar

[5] W.S. Lima, A.L.F. de Brito, M.G.F. Rodrigues, M.F. Mota, M.M. Silva: Eighth International Latin American Conference on Powder Technology (PTECH). Florianópolis, 06-09 de Novembro 2011. Procceding.. Florianópolis 2011. (SC).

Google Scholar

[6] M.M. da silva, A.C.L. Patrício, W.S. Lima, M.G.F. Rodrigues, H.M. Laborde: Eighth International Latin American Conference on Powder Technology (PTECH). Florianópolis, 06-09 de Novembro 2011. Procceding.. Florianópolis 2011. (SC).

Google Scholar

[7] X. B Yu, C. H Wei, L. Ke, H. Z, Z. S Wu Chai, Y. Hu: Journal. of Colloid and Interface Science Vol. 369 (2012), p.344.

Google Scholar

[8] C. Marcos, I. Rodríguez: Applied Clay Science Vol. 90 (2014), p.96.

Google Scholar

[9] Y. El Mouzdahir, A. Elmchaouri, R.A. Mahboub, S.A.K. Gil: Powder Technology Vol. 189 (2009), p.2.

Google Scholar