The heat treatment of dolomite. III. The precipitation of magnesia from sea‐water by calcined dolomite
- 1 December 1952
- journal article
- research article
- Published by Wiley in Journal of Chemical Technology & Biotechnology
- Vol. 2 (12) , 701-703
- https://doi.org/10.1002/jctb.5010021206
Abstract
Samples of dolime have been prepared by calcining dolomite at a series of temperatures between 700° and 1480°; they were then slaked at 95°, and the slurry added to sea‐water to precipitate magnesium hydroxide. The rate of fall f of the sludge line in tall cylindrical tubes was then observed, and the composition r of the precipitate determined (r = CaO: MgO). Both f and r vary according to the temperature Tc of calcination, and both have minimum values when Tc is between 1000° and 1100°.Keywords
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