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Simultaneous production of magnesium carbonate and calcium carbonate from dolomites and dolomitic limestones

โœ Scribed by V.N. Viswanathan; D.V. Ramana Rao; K. Kumar; S.J. Raina

Book ID
107946008
Publisher
Elsevier Science
Year
1979
Tongue
English
Weight
553 KB
Volume
6
Category
Article
ISSN
0301-7516

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โœฆ Synopsis

By use of a recarbonation process, it is possible to separate magnesium carbonate and calcium carbonate from dolomites/dolomitic limestones. Magnesium carbonate can be used for manufacturing basic refractories and magnesium chemicals; the portion rich in calcium carbonate can be used for cement manufacture if the MgO content is below 3%. In this paper the process developed for the purpose and the results of bench scale tests are reported. The results indicate that, under optimum conditions, both objectives can be fulfilled by the recarbonation process.

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โœ Per Alvfors; Gunnar Svedberg ๐Ÿ“‚ Article ๐Ÿ“… 1992 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 903 KB

The partially sintered spheres model, describing the sulphation of a sorbent particle consisting of CaO and inert content, is incorporated in a model taking into account the calcination of the limestone or dolomite and the sintering of the nascent oxide resulting from the calcination . The model is