TITLE

Preparation and Characterization of Nano-magnesia from Dolomite Rock

AUTHOR(S)
Khalil, N. M.; Wahsh, M. M. S.; Hassan, M. B.; Ahmida, A. L.
PUB. DATE
May 2013
SOURCE
Interceram: International Ceramic Review;May/Jun2013, Vol. 62 Issue 2, p100
SOURCE TYPE
Trade Publication
DOC. TYPE
Article
ABSTRACT
Four dolomite samples were prepared for simple chemical extraction of nano-magnesia. The chemical composition of the dolomite samples was studied using X-ray fluorescence (XRF). Their mineralogical compositions and thermal behaviours were examined with X-ray diffraction (XRD) and thermal analysis including thermogravimetry (TG), differential thermal analysis (DTA) and differential scanning colorimetry (DSC). The investigated dolomite samples were calcined at several different firing temperatures: 750, 800, 850 and 900 °C, and then used to extract nano-MgO. The efficiency of MgO extraction from the raw dolomite samples was calculated. The purity of extracted MgO was studied using XRD and a scanning electron microscope (SEM) attached with EDAX unit. Nano powder of pure MgO content could be optimally extracted from a pure dolomite sample after calcination at 800 °C.
ACCESSION #
88012707

 

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