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US 8,137,432 B2Granted
Method and furnace for melting steel scrap
AssigneeSiemens Aktiengesellschaft
InventorThomas Matschullat
Life of this patent
Estimating the term…
Abstract
A method for smelting steel scrap in a furnace, including: blowing a working gas into the furnace via a flow channel to supply melting energy; guiding the working gas through at least one electrodeless plasma torch; producing a plasma by at least one inductive heating coil, which encloses the flow channel coaxially and forms a heating zone; and guiding a cooling gas through a radially outside region of the flow channel.
Claims8
A method for melting steel scrap in a furnace, comprising:
- blowing a working gas into the furnace via a flow channel to supply melting energy;
- guiding the working gas through a radially inside region of a heating zone;
- guiding a cooling gas through a radially outside region of the heating zone;
- and
- producing a plasma using at least one inductive heating coil to heat the working gas,
- wherein the inductive heating coil encloses the flow channel coaxially and forms the heating zone within the flow channel, and
- wherein metallic or oxidic dust particles are mixed in with a further gas guided through the plasma torch.
4 more elements
Dependencies are inferred from the claim text.