Channel inductor and melt furnace comprising such channel inductor
AssigneeABB AB
InventorsÅke Archenholtz, Jan Bostedt, Arne Löfgren, Gote Tallback, Saeid Ebrahim, Alf Lundström
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Abstract
A channel inductor and a furnace for melting, holding or refining metal. The channel inductor has a closed-loop core, a primary winding arranged around the core and a refractory lining in which the winding and core is partly enclosed and in which an inductor channel is formed. The channel inductor also has a detector to detect metal penetration of the refractory lining.
Claims19
A channel inductor comprising a primary winding that is arranged around a closed-loop core, wherein said primary winding and said closed-loop core are partly enclosed in a refractory lining and an inductor channel is formed in the refractory lining, said inductor channel is being such arranged in the refractory lining so that the inductor channel when filled with an electrically conductive material acts as a secondary winding, said channel inductor further includes detection means for detection of metal penetration of the refractory lining is arranged in the refractory lining between the inductor channel and the primary winding, and that said detection means exhibit openings and is made in an electrically conductive material.
A melt furnace including a channel inductor comprising:
- a refractory lining;
- a closed-loop core;
- a primary winding arranged around said closed-loop core, said primary winding and said closed-loop core are both partly enclosed in said refractory lining;
- an inductor channel is formed in said refractory lining and is arranged in said refractory lining so that said inductor channel when filled with an electrically conductive material acts as a secondary winding;
- and
- a detector for detection of metal penetration of said refractory lining is arranged in said refractory lining between said inductor channel and said primary winding, said detector exhibits openings and is made in an electrically conductive material.
A method for improving thermal and overall efficiency within a melt furnace including a channel inductor comprising a primary winding that is arranged around a closed-loop core, wherein said primary winding and said closed-loop core are partly enclosed in a refractory lining and an inductor channel is formed in the refractory lining, said inductor channel is being such arranged in the refractory lining so that the inductor channel when filled with an electrically conductive material acts as a secondary winding, said method comprising the step of:
- detecting metal penetration of the refractory lining using an electrically conductive metallic net or mesh exhibiting openings.
Dependencies are inferred from the claim text.