The kinetics of the thermal decomposition of a limestone and, simultaneously, of the lime growth have been investigated during isothermal treatments by means of in situ High Temperature X-Ray Powder Diffraction. In particular, four grain sizes of a quarry limestone with differences in terms of mineralogical composition (dolomite content), chemical composition (Fe and Mg amounts), and texture, have been studied. The lime produced during the isothermal treatments was then examined by using Scanning Electron Microscopy. In all samples, limestone decomposition starts with dolomite dissociation, followed by calcite decomposition. Rather than particle size, limestone texture, and dolomite content seem to be the most important factors controlling the starting temperature of calcination and its kinetic behavior.
A kinetic study of thermal decomposition of limestone using in situ high temperature X-ray powder diffraction / N. Marinoni, S. Allevi, M. Marchi, M. Dapiaggi. - In: JOURNAL OF THE AMERICAN CERAMIC SOCIETY. - ISSN 0002-7820. - 95:8(2012 Aug), pp. 2491-2498.
|Titolo:||A kinetic study of thermal decomposition of limestone using in situ high temperature X-ray powder diffraction|
|Settore Scientifico Disciplinare:||Settore GEO/06 - Mineralogia|
|Data di pubblicazione:||ago-2012|
|Digital Object Identifier (DOI):||http://dx.doi.org/10.1111/j.1551-2916.2012.05207.x|
|Appare nelle tipologie:||01 - Articolo su periodico|