Method for the physical separation of a metallic phase and scoriae in an induction furnace
AssigneeCompagnie Generale des Matieres Nucleaires (Cogema)
InventorGeorges Bolze
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Abstract
The invention relates to a method for the separation in an induction furnace of a metallic phase and scoriae in a crucible 1 essentially transparent to an electromagnetic field. The method consists of subjecting materials in a first zone 14 to an electromagnetic field of frequency enabling the direct coupling of the inductor 10 with the scoriae, then in a second zone to an electromagnetic field of reduced frequency enabling, under the effect of the centripetal forces produced, the assembling of the metallic phase 28 in the axial region of the crucible.
Claims18
Method for the separation in an induction furnace of a metallic phase and scoriae contained in a crucible essentially transparent to an electromagnetic field maintained within said induction furnace, which comprises subjecting the materials:
- in a first zone to an induction current of sufficiently high power and frequency to permit the direct coupling of this induction current with the materials in this first zone, so as to maintain the scoriae in the molten state,
- then, in a second zone, adjacent to the preceding one, to an induction current of such power or frequency, or both, that direct coupling between the induction current and the scoriae is no longer permitted.
Dependencies are inferred from the claim text.