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Title: | Towards the Zeolitization of Bauxite: Thermal Behaviour of Gibbsite in High-Alumina- Ghanaian Bauxite. |
Authors: | Kwakye-Awuah, B. Von-Kiti, E. Nkrumah, I. Williams, C. |
Keywords: | Bauxite thermal gibbsite zeolite characterization |
Issue Date: | Oct-2013 |
Publisher: | International Journal of Engineering Research & Technology (IJERT) |
Citation: | International Journal of Engineering Research & Technology (IJERT) |
Abstract: | Bauxite samples from Awaso mines in
Ghana were heated at 100, 300, 500, 800
and 1000 oC and changes in the
Al2O3.H2O phase/composition were
investigated using X-ray diffraction
(XRD), scanning electron microscopy
(SEM), energy dispersive X-ray analysis
(EDX), Fourier transformed infrared
spectroscopy (FTIR) and particle size
analysis. The thermal behaviour of
bauxite with time was monitored by
Thermogravimetric analysis. The results
obtained showed that heating bauxite at
100 oC is enough to obtain the sodalite
structure needed for the zeolitization of
bauxite. Heating the bauxite at higher
temperatures resulted in the loss of the
alumina composition as a result of
decomposition of metal carbonates to
metal oxides and subsequently the
formation of a metal aluminosilicate. The
particles size decreased with temperature
with average particle size distribution
ranging from 8 – 10 μm and 15.5 – 42 μm
in the un-heated and treated bauxite
respectively. |
Description: | This article is published by International Journal of Engineering Research & Technology (IJERT) |
URI: | http://hdl.handle.net/123456789/14777 |
ISSN: | 2278-0181 |
Appears in Collections: | College of Science
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