Rapid Precipitation of Magnesite Microcrystals from Mg(OH)2‑H2O‑CO2 Slurry Enhanced by NaOH and a Heat-Aging Step (from ∼20 to 90 °C)

This study proposes a simple and novel synthesis route for rhombohedral single crystals (90 °C) and its synthesis requires several days or weeks depending on experimental conditions. For this reason, industrial-scale magnesite production has been limited. The proposed magnesite synthesis method, req...

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Bibliographic Details
Published in:Crystal growth & design 2012-11, Vol.12 (11), p.5233-5240
Main Authors: Montes-Hernandez, G, Renard, F, Chiriac, R, Findling, N, Toche, F
Format: Article
Language:English
Subjects:
Cross-disciplinary physics: materials science
rheology
Exact sciences and technology
Materials science
Phase diagrams and microstructures developed by solidification and solid-solid phase transformations
Physics
Precipitation
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Summary:This study proposes a simple and novel synthesis route for rhombohedral single crystals (90 °C) and its synthesis requires several days or weeks depending on experimental conditions. For this reason, industrial-scale magnesite production has been limited. The proposed magnesite synthesis method, requiring only 48 h and moderate temperature, could easily be extrapolated on an industrial scale. Moreover, a simple and novel synthesis route for the production of fine platy particles of hydromagnesite is reported, with synthesis requiring only 5 h. On the basis of their chemical compositions and textural properties, there are potential applications for both minerals, for example, as a mineral filler and/or as a flame retardant.
ISSN:1528-7483
1528-7505
DOI:10.1021/cg300652s