Journal
CHINESE JOURNAL OF CHEMICAL ENGINEERING
Volume 17, Issue 4, Pages 661-666Publisher
CHEMICAL INDUSTRY PRESS CO LTD
DOI: 10.1016/S1004-9541(08)60260-8
Keywords
homogeneous precipitation; magnesium carbonate hydrates; magnesium oxide; filtration characteristic
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Funding
- National Natural Science Foundation of China [20876161]
- National Basic Research Program of China [2007CB613501, 2009CB219904]
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Homogeneous (unseeded) precipitation of magnesium carbonate hydrates by the reaction Of MgCl2 with Na2CO3 in supersaturated solutions between 273 and 363 K was investigated. The compositions, morphologies and filtration characteristics of the precipitates were studied in detail. The magnesium carbonate hydrates obtained at 313 K and in the range of 343-363 K showed good morphologies and filtration characteristics. Magnesium oxides (MgO) with high purity (97.6%-99.4%) were obtained by calcining magnesium carbonate hydrates at 1073 K.
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