A method for preparing an article of a base metal alloyed with an alloying element includes the steps of preparing a compound mixture by the steps of providing a chemically reducible nonmetallic base-metal precursor compound of a base metal, providing a chemically reducible nonmetallic alloying-element precursor compound of an alloying element, and thereafter mixing the base-metal precursor compound and the alloying-element precursor compound to form a compound mixture. The compound mixture is thereafter reduced to a metallic alloy, without melting the metallic alloy. The step of preparing or the step of chemically reducing includes the step of adding an other additive constituent. The metallic alloy is thereafter consolidated to produce a consolidated metallic article, without melting the metallic alloy and without melting the consolidated metallic article.

A method for the production of cast iron starting from pre-reduced iron ore (DRI) with an electric arc furnace includes the steps of preparing a charge of pre-reduced iron ore DRI having a metallization higher than 90% and containing over 2.8% by weight of carbon, wherein at least 80% of the carbon is combined with the iron to form iron carbide Fe.sub.3C; charging the charge of pre-reduced iron ore into the electric arc furnace; and melting the DRI charge to form liquid cast iron having at least 80% by weight of actual carbon content deriving from the carbon in the charge of pre-reduced iron ore, the melting step being in a reducing atmosphere and in a melting chamber of the electric arc furnace subjected to a positive internal pressure generated by the gases produced by reduction reactions that develop during melting.

A method for processing iron ore to obtain steel by feeding the DRI into a smelting furnace so as to obtain an intermediate iron product, which is then subsequently introduced into a conversion unit for obtaining steel form the intermediate iron product. Moreover, carbon is introduced into the process. As a consequence, a suitable carbon content may be achieved for the intermediate iron product such that impurities of the intermediate iron product may be reduced along with carbon contents thereof in a steel conversion process without sacrificing iron contents of the intermediate iron product. Simultaneously, suitable fluxes are fed into the smelting furnace together with the DRI, such that high-quality slag suitable as raw material for further processing is obtained therefrom. An associated smelting furnace arrangement is also disclosed.

A device for manufacturing molten iron is provided. The device for manufacturing the molten iron includes a multi-stage fluidized reduction furnace for reducing a powdered iron ore including hematite and limonite, a melting gas furnace connected to the fluidized reduction furnace through an ore conduit and a gas conduit, a fluidized bed oxidation furnace for oxidizing magnetite to be converted into hematite through steam provided from the fluidized reduction furnace, and a hydrogen processing unit for processing hydrogen generated by the oxidation reaction of magnetite in the fluidized bed oxidation furnace.

A device for manufacturing molten iron is provided. The device for manufacturing the molten iron includes a multi-stage fluidized reduction furnace for reducing a powdered iron ore including hematite and limonite, a melting gas furnace connected to the fluidized reduction furnace through an ore conduit and a gas conduit, a fluidized bed oxidation furnace for oxidizing magnetite to be converted into hematite through steam provided from the fluidized reduction furnace, and a hydrogen processing unit for processing hydrogen generated by the oxidation reaction of magnetite in the fluidized bed oxidation furnace.

In a process and apparatus for the reduction of metal oxides (3) to form metalized material by contact with hot reducing gas, which is produced at least partially by catalytic reformation of a mixture of a gas containing carbon dioxide (CO.sub.2) and/or steam (H.sub.2O) with gaseous hydrocarbons,
the heat for the endothermal reformation processes which take place during the reformation is provided at least partially by the combustion of a fuel gas.

The present disclosure relates to a process for producing an iron melt. The method includes; reducing iron ore to sponge iron, carburizing sponge iron with a carbonaceous gas, melting the carburized sponge iron and/or treating the melt produced from the carburized sponge iron. According to the present disclosure, the carbonaceous gas is at least a portion of the process gas obtained in the melting of the carburized sponge iron and/or treating of the melt produced from the carburized sponge iron that has been recycled.

A method for manufacturing reduced iron using the same, and more particularly, to a burning apparatus heating a coal briquette to manufacture reduced iron, which includes a first burning furnace heating the coal briquette while moving the truck accommodating the coal briquette along a linear movement path; a second burning furnace connected to the other side of the first burning furnace, and heating the coal briquette while moving the coal briquette discharged from the truck along an annular path; and a cooling device connected to the second burning furnace, and cooling the reduced iron while moving reduced iron reduced in the second burning furnace along an annular path. The burning apparatus circulates exhaust gases generated in the burning furnace and cooling device to control a temperature and an oxygen concentration and thus improves a metallization rate of the reduced iron.

A method for manufacturing reduced iron using the same, and more particularly, to a burning apparatus heating a coal briquette to manufacture reduced iron, which includes a first burning furnace heating the coal briquette while moving the truck accommodating the coal briquette along a linear movement path; a second burning furnace connected to the other side of the first burning furnace, and heating the coal briquette while moving the coal briquette discharged from the truck along an annular path; and a cooling device connected to the second burning furnace, and cooling the reduced iron while moving reduced iron reduced in the second burning furnace along an annular path. The burning apparatus circulates exhaust gases generated in the burning furnace and cooling device to control a temperature and an oxygen concentration and thus improves a metallization rate of the reduced iron.

A process for the manufacturing of hot briquetted iron (HBI) from direct reduced iron (DRI) wherein iron ore is direct reduced in a reactor by a reducing gas consisting of natural gas and/or hydrogen and/or carbon monoxide under elevated temperatures and discharging the direct reduced iron to at least one briquetting device where briquettes are pressed from the direct reduced iron characterized in that the direct reduced iron after leaving the reactor and before briquetting is heated to a target briquetting temperature.