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US 2022/0162718 A1Published application
Method For The Production Of Metal Products Starting From Ferrous Material, By Means Of An Electric Arc Furnace
AssigneeI.Blu S.R.L.
InventorsPaolo Gosparini, Mirko Bottolo, Elia Gosparini
Life of this patent
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Abstract
Method for the production of metal products starting from ferrous material, by means of an electric arc furnace.
Claims16
Method for the production of metal products starting from ferrous material, by means of an electric arc furnace, comprising:
- preheating and melting of said ferrous material by the combined action of the electric arc of said electric arc furnace, and of the combustion of a fuel, wherein said ferrous material is transformed into a molten metal material;
- refining of said molten metal material, which is transformed into a molten metal product by the action of a reducing agent generated from carbon sources;
- wherein a polymeric material is used in at least partial replacement of said fuel for said preheating and said melting and/or said carbon sources for said refining,
- wherein said polymeric material derives from waste, from refuse or from recycling, in particular from domestic, urban and/or industrial waste, and comprises two or more of:
- Polyethylene (PE), Polypropylene (PP), Polyethylene terephthalate (PET), High Density Polyethylene (HDPE), Low Density Polyethylene (LDPE), or combinations thereof
- wherein said polymeric material has a calorific value not lower than 30 MJ/Kg, referred to the dry sample after 4 hours of drying at 105° C.,
- wherein said polymeric material comprises a polymeric fraction greater than 50% by weight on the dry sample.
4 more elements
Use of a polymeric material in a method for the production of metal products starting from ferrous material, by means of an electric arc furnace, comprising:
- preheating and melting of said ferrous material by the combined action of the electric arc of said electric arc furnace and of the combustion of a fuel, in which said ferrous material is transformed into a molten metal material;
- refining of said molten metal material, which is transformed into a molten metal product by the action of a reducing agent generated from carbon sources;
- wherein said polymeric material is used in at least partial replacement of said fuel for said preheating and melting and/or of said carbon sources for said refining;
- wherein said polymeric material derives from waste, from refuse or from recycling, in particular from domestic, urban and/or industrial waste, and comprises two or more of:
- Polyethylene (PE), Polypropylene (PP), Polyethylene terephthalate (PET), High Density Polyethylene (HDPE), Low Density Polyethylene (LDPE), or combinations thereof,
- wherein said polymeric material has a calorific value not lower than 30 MJ/Kg, referred to the dry sample after 4 hours of drying at 105° C.,
- wherein said polymeric material comprises a polymeric fraction greater than 50% by weight on the dry sample.
4 more elements
Dependencies are inferred from the claim text.