Process for recovering elemental phosphorus and a metal concentr

Details Process for recovering elemental phosphorus and a metal concentr Process for recovering elemental phosphorus and a metal concentr

1988-07-14

1989-02-21

Heller, Gregory A.

Chemistry of inorganic compounds

Phosphorus or compound thereof

Elemental phosphorus

423323, C01B 2501, C01B 2502, C01B 2504

Patent

active

048063258

ABSTRACT:
Ferrophos is treated in a plasma furnace by maintaining an electric arc between a cathode and at least one point on the surface of the ferrophos which serves as the anode in the presence of an inert plasma gas, maintaining the average temperature of the ferrophos at about 2,000.degree. C. to about 2,700.degree. C., evolving gaseous phosphorus from the ferrophos until it contains less than about 7% by weight phosphorus, removing a purified phosphorus gas as one product and a metal concentrate having a reduced phosphorus content as a coproduct.

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Chemical Abstracts, 90:202830Q "Studies on the Plasmochemical Conversion of Ferrophosphorus".
U.S. Bureau of Mines report "Processes for Recovering Vanadium From Western Phosphates".
Chemical Abstracts, vol. 78, 1973 (C.A. 46552v) "Dephosphorization of Ferrophosphorus".
Chemical Abstracts, vol. 96, 1982 (C.A. 96:201882v) "Study of the Thermal Dissociation of Iron-Phosphorus Alloys".
U.S. Bureau of Mines Letter to Mr. Eric Rau dated 7/7/64.

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