Abrégé

A method for producing a ferrous alloy may include: melting a ferrous metal charge in a metallurgical furnace to obtain a mass of molten metal; and feeding into the metallurgical furnace, before, during, and/or after the melting of the ferrous metal charge, at least one granular composite material including: greater than or equal to 50% and less than or equal to 97% by weight of a polymeric component including polyethylene; and greater than or equal to 3% and less than or equal to 50% by weight of metallic aluminum. The percentages by weight refer to a total weight of the polymeric component including polyethylene and the metallic aluminum.

Classes IPC  ?

• C21B 5/02 - Fabrication de fontes brutes, p. ex. par utilisation d'additifs, p. ex. des oxydes d'autres métaux

Abrégé

A method for forming a foamy slag in an electric arc melting furnace during the production of a ferrous alloy may include: (a) melting a metal charge in the electric arc furnace to obtain a molten metal bath including a layer of a floating slag; (b) introducing a foamy slag forming agent into the furnace to foam the floating slag. The agent may be a composite material in granular form which includes at least one thermoplastic polymeric material and at least one biogenic carbonaceous material.

Classes IPC  ?

• C21C 5/54 - Procédés donnant des scories de composition particulière
• C21C 5/52 - Fabrication de l'acier au four électrique
• C21C 7/00 - Traitement à l'état liquide des alliages ferreux, p. ex. des aciers, non couverts par les groupes
• F27D 11/08 - Chauffage par décharge électrique, p. ex. décharge d'arc

Abrégé

The present invention relates to a method for producing a ferrous alloy comprising the following steps : a. melting a ferrous metal charge in a metallurgical furnace to obtain a mass of molten metal; b. feeding into said furnace, before, during and/or after step a, at least one granular composite material comprising : (1) 50% 97% by weight of a polymeric component comprising polyethylene, (11) 3% 50% by weight of metallic aluminum, said percentages by weight referring to the total weight of the polymeric component (i) and of the metallic aluminum (11). The composite material is preferably obtained from the recycling of post-consumer waste of beverage cartons and/or scraps from a beverage carton production process. The composite material can be loaded with one or more additional materials, such as slagging agents, recycled polymeric materials, carbon sources, cellulose -based materials, metals, metal oxides, ferro-alloys and carbonates.

Classes IPC  ?

• C21B 3/02 - Utilisation d'additifs, p. ex. des agents fluants

Abrégé

The present invention relates to a method for producing a ferrous alloy comprising the following steps : a. melting a ferrous metal charge in a metallurgical furnace to obtain a mass of molten metal; b. feeding into said furnace, before, during and/or after step a, at least one granular composite material comprising : (1) 50% 97% by weight of a polymeric component comprising polyethylene, (11) 3% 50% by weight of metallic aluminum, said percentages by weight referring to the total weight of the polymeric component (i) and of the metallic aluminum (11). The composite material is preferably obtained from the recycling of post-consumer waste of beverage cartons and/or scraps from a beverage carton production process. The composite material can be loaded with one or more additional materials, such as slagging agents, recycled polymeric materials, carbon sources, cellulose -based materials, metals, metal oxides, ferro-alloys and carbonates.

Classes IPC  ?

• C21B 3/02 - Utilisation d'additifs, p. ex. des agents fluants
• C21B 5/00 - Fabrication de la fonte brute dans les hauts fourneaux
• C21B 5/02 - Fabrication de fontes brutes, p. ex. par utilisation d'additifs, p. ex. des oxydes d'autres métaux
• C21B 13/00 - Fabrication de fer spongieux ou d'acier liquide par des procédés directs
• C21C 7/00 - Traitement à l'état liquide des alliages ferreux, p. ex. des aciers, non couverts par les groupes

Abrégé

The present invention relates to a method for forming a foamy slag in an electric arc melting furnace during the production of a ferrous alloy which comprises the following steps: a. melting a metal charge in the electric arc furnace to obtain a molten metal bath comprising a layer of a floating slag; b. introducing a foamy slag forming agent into the furnace to foam said floating slag; wherein said agent is a composite material in granular form which comprises at least one thermoplastic polymeric material and at least one biogenic carbonaceous material.

Classes IPC  ?

• C21C 5/52 - Fabrication de l'acier au four électrique
• C21C 5/54 - Procédés donnant des scories de composition particulière

Abrégé

The present invention relates to a method for forming a foamy slag in an electric arc melting furnace during the production of a ferrous alloy which comprises the following steps: a. melting a metal charge in the electric arc furnace to obtain a molten metal bath comprising a layer of a floating slag; b. introducing a foamy slag forming agent into the furnace to foam said floating slag; wherein said agent is a composite material in granular form which comprises at least one thermoplastic polymeric material and at least one biogenic carbonaceous material.

Classes IPC  ?

• C21C 5/52 - Fabrication de l'acier au four électrique
• C21C 5/54 - Procédés donnant des scories de composition particulière
• C21C 7/00 - Traitement à l'état liquide des alliages ferreux, p. ex. des aciers, non couverts par les groupes