Apparatus for producing steel utilizing an electrical steel making furnace vessel
AssigneeSMS Schloemann-Siemag Aktiengesellschaft
InventorsFritz-Peter Pleschiutschnigg, Wei-Ping Wu
Life of this patent
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Abstract
A method of and an apparatus for the production of steel utilizing a single vessel for the electric arc smelting of scrap, directly reduced iron or pig iron in solid form, and for the oxygen blowing of the resulting melt through an oxygen lance introduced via a tower-shaped part of the roof. Another part of the roof can pivot to allow charging of the furnace with solids and the tower can be provided with a funnel enabling a molten iron charge to be fed to the furnace.
Claims8
An electrical steel-making furnace, comprising:
- a furnace vessel adapted to receive a charge of iron refinable to produce steel;
- a roof for said furnace formed with a swingable part and a tower-shaped stationary part;
- at least one electrode extending into said vessel for direct-current or alternating-current melting of scrap therein;
- at least one oxygen lance extending into said vessel for oxygen refining of iron to steel therein;
- and
- an upwardly open funnel formed on said tower-shaped stationary part for feeding molten iron into said vessel, and a cover for said funnel hinged onto said tower-shaped stationary part, said oxygen lance extending into said vessel through said tower-shaped stationary part.
An electrical steel-making furnace, comprising:
- a furnace vessel adapted to receive a charge of iron refinable to produce steel;
- a roof for said furnace formed with a swingable part and a tower-shaped stationary part;
- at least one electrode extending into said vessel for direct-current or alternating-current melting of scrap therein;
- and
- at least one oxygen lance extending into said vessel for oxygen refining of iron to steel therein;
- said oxygen lance extending into said vessel through said tower-shaped stationary part.
An electrical steel-making furnace, comprising:
- a furnace vessel adapted to receive a charge of iron refinable to produce steel;
- a roof for said furnace formed with a swingable part and a tower-shaped stationary part;
- at least one electrode extending into said vessel for direct-current or alternating-current melting of scrap therein;
- at least one oxygen lance extending into said vessel for oxygen refining of iron to steel therein;
- and
- a sublance extending into said vessel through said tower-shaped stationary part for taking temperature measurements or for sampling.
An electrical steel-making furnace, comprising:
- a furnace vessel adapted to receive a charge of iron refinable to produce steel;
- a roof for said furnace formed with a swingable part and a tower-shaped stationary part;
- at least one electrode extending into said vessel for direct-current or alternating-current melting of scrap therein;
- at least one oxygen lance extending into said vessel for oxygen refining of iron to steel therein;
- and
- at least one burner and at least one side lance opening into said vessel.
Dependencies are inferred from the claim text.