Method and apparatus for reduction of metal oxides

Details Method and apparatus for reduction of metal oxides Method and apparatus for reduction of metal oxides

1987-06-19

1988-08-23

Rosenberg, Peter D.

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

266287, C22B 400

Patent

active

047658282

ABSTRACT:
A method of reducing metal oxides comprises introducing feedstock material into a plasma torch reactor according to two different flow patterns. A primary feedstock is fed into the immediate vicinity of the plasma stream in a helical pattern surrounding the plasma stream. The primary feedstock material preferably comprises the metal oxides to be reduced within the reactor. A secondary feedstock material is fed at a more remote location, preferably in a flow pattern developing a protective wall for the inside of the reactor. A preferred assembly is provided for application of the process. For the preferred embodiment, the assembly comprises a top plate, a central ramp, a bottom plate and a liner to form separate feed channels for the primary and secondary feedstock.

REFERENCES:
patent: 2819423 (1958-01-01), Clark
patent: 3264094 (1966-08-01), Robinson
patent: 3936586 (1976-02-01), Tylko
patent: 4177060 (1979-12-01), Tylko
patent: 4310350 (1982-01-01), Santen
patent: 4518419 (1985-05-01), Lugscheider et al.
patent: 4571259 (1986-02-01), Fey et al.
patent: 4699653 (1987-10-01), Barcza

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