Process for recovering elemental phosphorus and a metal...

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

C - Chemistry, Metallurgy

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53/104, 23/324,

C01B 25/01 (2006.01) C01B 25/02 (2006.01) C21B 13/12 (2006.01) C21C 7/064 (2006.01) C22B 4/00 (2006.01) C22C 3/00 (2006.01)

Patent

CA 1303330

Abstract: PROCESS FOR RECOVERING ELEMENTAL PHOSPHOR US AND A METAL CONCENTRATE FROM FERROPHOS Ferrophos is treated in a plasma furnace by main- taining 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°C to about 2,700°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 con- tent as a coproduct.

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