Specialized metallurgical processes – compositions for use therei – Processes – Electrothermic processes
Patent
1983-04-20
1984-09-04
Rosenberg, Peter D.
Specialized metallurgical processes, compositions for use therei
Processes
Electrothermic processes
75 26, 219121P, C22B 400, C22B 110, B23K 900
Patent
active
044695080
ABSTRACT:
A substance to be treated is brought into a treatment column (10) and kept in suspension (11) in the latter by the injection (A) of a fluidizing gas into the bottom part of the column.
According to the invention, a plasma is injected (D) into the column in at least one direction within a radial plane relative to the column.
Preferably, the plasma is produced by high-frequency induction and injected at a pressure of the order of atmospheric pressure, so as not to perturb the fluidization of the bed and so as to permit good interpenetration of the various gas streams.
Applications to the synthesis of nitrogen oxides, to the gasification of a carbonaceous substance and to the reduction of ores, as well as to the roasting or drying of materials.
REFERENCES:
patent: 2894831 (1959-07-01), Old
patent: 3404078 (1968-10-01), Goldberger
Amouroux Jacques
Cavadias Simeon
Caserza Steven F.
Electricite de France (Service National
MacDonald Thomas S.
MacPherson Alan H.
Rosenberg Peter D.
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