Abstract:This paper aims to evaluate the kinetics of hydroxylation for two distinct magnesias from Brazilian mineral sources regarding their purity: A -92.44wt% and B -98.20wt% of MgO. The magnesias were characterized and hydroxylated in a CSTR (1,0L) under: 80°C, stirring rate of 950rpm and 30%w/w of solids, in triplicate. The results showed that the presence of natural impurities in caustic magnesia (Fe, Mn, Al, Ca) hindered the advance of the reaction, but not at the beginning, when the hydroxylation was similar for… Show more
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