A method for manufacturing pig iron in an electrical smelting furnace and associated electrical smelting furnace

14:

• The method according to claim 13 wherein the carbon containing material is injected in an amount sufficient to reach a final carbon content of 4.0 to 4.5% in weight in the pig iron layer.

15:

• The method according to claim 13 wherein the carbon containing material is chosen from at least one of the group consisting of:
• coke, anthracite, silicon carbide, calcium carbide, biomass, carbon coming from the combustion of biomass and a mixture of any of those materials.

16:

• The method according to claim 13 wherein the carbon containing material has particles having a particle size below 3 mm.

17:

• The method according to claim 16 wherein 70 to 80% of the particles have a particle size less than or equal to 75 μm, remaining particles having a particle size less than or equal to 2 mm.

18:

• The method according to claim 13 wherein the DRI product is manufactured using a reducing gas containing at least 50% in volume of hydrogen before being loaded in the smelting furnace.

19:

• The method according to claim 13 wherein a silicon containing material is added to the carbon containing material to be injected in the pig iron.

21:

• The method for manufacturing steel according to claim 20 wherein ferrous scraps are added to the pig iron in the converter, the ferrous scraps being melted.

22:

• The method for manufacturing steel according to claim 20 wherein the pig iron is transferred from the smelting furnace to a desulphurization station before being transferred to the converter.

23:

• An electrical smelting furnace for manufacturing pig iron comprising:
• a vessel provided with tap holes associated with at least one runner allowing to tap the manufactured pig iron into a pig iron ladle, and
• an injector for injecting a carbon-containing material directly in the pig iron in the runner.