Process for arc heater production of defluorinated phosphates

Details Process for arc heater production of defluorinated phosphates Process for arc heater production of defluorinated phosphates

1973-02-20

1976-12-28

Vertiz, Oscar R.

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Alkaline earth metal

204164, C01F 100, C01F 540, C01F 1146

Patent

active

040002454

ABSTRACT:
Tricalcium phosphate is made by reacting phosphate rock and a defluorinating reagent comprising steam, in the presence of a hyperheated heat transfer gas mixture comprising CO and H.sub.2, at a temperature between about 1500.degree. - 2200.degree. C, and then separating the solid and gaseous materials.

REFERENCES:
patent: 2143865 (1939-01-01), Copson
patent: 2220575 (1940-11-01), Luscher
patent: 3332870 (1967-07-01), Orbach et al.
patent: 3380904 (1968-04-01), Goldberger
patent: 3607024 (1971-09-01), Vilesov et al.
patent: 3679363 (1972-07-01), Skrivan
patent: 3832448 (1974-08-01), Longfield et al.
Industrial & Engineering Chemistry, vol. 29, No. 7, Fertilizer from Rock Phosphate, Curtis et al.

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