Abstract

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.

IPC Classes  ?

• C21B 5/02 - Making special pig-iron, e.g. by applying additives, e.g. oxides of other metals

Abstract

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.

IPC Classes  ?

• C21C 5/54 - Processes yielding slags of special composition
• C21C 5/52 - Manufacture of steel in electric furnaces
• C21C 7/00 - Treating molten ferrous alloys, e.g. steel, not covered by groups
• F27D 11/08 - Heating by electric discharge, e.g. arc discharge

Abstract

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.

IPC Classes  ?

• C21B 3/02 - General features in the manufacture of pig-iron by applying additives, e.g. fluxing agents

Abstract

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.

IPC Classes  ?

• C21B 3/02 - General features in the manufacture of pig-iron by applying additives, e.g. fluxing agents
• C21B 5/00 - Making pig-iron in the blast furnace
• C21B 5/02 - Making special pig-iron, e.g. by applying additives, e.g. oxides of other metals
• C21B 13/00 - Making spongy iron or liquid steel, by direct processes
• C21C 7/00 - Treating molten ferrous alloys, e.g. steel, not covered by groups

Abstract

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.

IPC Classes  ?

• C21C 5/52 - Manufacture of steel in electric furnaces
• C21C 5/54 - Processes yielding slags of special composition

Abstract

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.

IPC Classes  ?

• C21C 5/52 - Manufacture of steel in electric furnaces
• C21C 5/54 - Processes yielding slags of special composition
• C21C 7/00 - Treating molten ferrous alloys, e.g. steel, not covered by groups