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High Temperature X-ray Diffraction Studies of the Defluorination Reactions of Chukhrovite, Falphite and Ralstonite

Published online by Cambridge University Press:  06 March 2019

Robert L. Wilson ,
Jacob Mu  and
James L. Bradford
Robert L. Wilson
Affiliation:
Rockwell Hanford Operations Applied Technology Group P. O. Box 800 Richland, WA 99352
Jacob Mu
Affiliation:
U. S. Borax Research 412 Crescent Way Anaheim, CA 92801
James L. Bradford
Affiliation:
Occidental Chemical Corporation Chemical Process Research Agricultural Research Laboratory White Springs, FL 32096
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Extract

Current commercial processes for the production of wet-process phosphoric acid involve the dissolution of phosphate rock and separation of insoluble solids by filtration. Calcium is removed by the addition of H2SO4, to precipitate CaSO4·2H2O. Other metallic impurities are removed by extraction or precipitation.

In a new process. Lower grade phosphate ore can be digested with recycled phosphoric acid. If the raw acid contains a fairly high concentration of Mg, it may be enriched in fluoride ion.

Type
X. XRD Applications
Information
Advances in X-Ray Analysis , Volume 28: Thirty-Third Annual Conference on Applications of X-ray Analysis, July 30 - August 3, 1984 , 1984 , pp. 339 - 343
Copyright
Copyright © International Centre for Diffraction Data 1984

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