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Optimisation of epsomite transformation into periclase using experimental design methodology
Author(s) -
Behij S.,
Djebali K.,
Hammi H.,
Hamzaoui A. H.,
M'nif A.
Publication year - 2011
Publication title -
journal of chemometrics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.47
H-Index - 92
eISSN - 1099-128X
pISSN - 0886-9383
DOI - 10.1002/cem.1324
Subject(s) - factorial experiment , fractional factorial design , central composite design , brucite , periclase , magnesium , materials science , crystallization , talc , chemical engineering , process engineering , chemistry , mineralogy , mathematics , response surface methodology , metallurgy , chromatography , engineering , statistics
In this work, the experimental design methodology is applied to optimise MgO production from magnesium sulphate salt. This is a two‐step process through an intermediate product (Brucite: Mg(OH) 2 ). For the first step, a fractional factorial design and a centred composite one are used in order to establish appropriate experimental conditions for Mg(OH) 2 obtention. The most favourable conditions for the second step to obtain MgO were determined using only a fractional factorial design. The decomposition of the optimal precipitated Mg(OH) 2 was analysed by DTA/TGA and the crystallisation process was observed by XRD. The morphological properties of the MgO agglomerates were examined by SEM. Copyright © 2010 John Wiley & Sons, Ltd.