The present invention provides a manufacturing method of crude copper from low-grade copper sludge, one embodiment of the present invention comprises the steps of: (1) calcining a low-grade copper sludge (step 1); (2) producing a mixture by adding at least one selected from a group consisting of binder, flux and combinations thereof to the calcined low-grade copper sludge (step 2); (3) producing a briquette by compression molding the mixture (step 3); (4) melting and reducing by charging the briquette into a submerged arc furnace with adding flux (step 4); and (5) separating crude copper and slag produced by melting and reducing (step 5).

The present invention provides a manufacturing method of crude copper from low-grade copper sludge, one embodiment of the present invention comprises the steps of: (1) calcining a low-grade copper sludge (step 1); (2) producing a mixture by adding at least one selected from a group consisting of binder, flux and combinations thereof to the calcined low-grade copper sludge (step 2); (3) producing a briquette by compression molding the mixture (step 3); (4) melting and reducing by charging the briquette into a submerged arc furnace with adding flux (step 4); and (5) separating crude copper and slag produced by melting and reducing (step 5).

Provided is a smelting method in which, for example, a metal oxide such as a nickel oxide ore including nickel oxide is used as a source material and is reduced with a carbonaceous reducing agent to obtain a reduced product, with which method efficient processing can be achieved. This metal oxide smelting method is, for example, a nickel oxide ore smelting method. Specifically, the method includes a reduction process step S3 that has: a drying step S31 in which a mixture that was obtained by mixing a metal oxide and a carbonaceous reducing agent is dried; a preheating step S32 in which the dried mixture is preheated; a reduction step S33 in which the preheated mixture is reduced using a rotary hearth furnace 1, a hearth of which rotates; and a cooling step S35 in which the obtained reduced product is cooled.

A pellet including C-grade iron fines and a binder; a method of producing said pellet, including mixing the C-grade iron fines and the binder to form a mixture and agglomerating the mixture to form a pellet; and a method of producing steel, including heating a pellet including C-grade iron fines and a binder in an electric arc furnace are all provided.

A pellet including C-grade iron fines and a binder; a method of producing said pellet, including mixing the C-grade iron fines and the binder to form a mixture and agglomerating the mixture to form a pellet; and a method of producing steel, including heating a pellet including C-grade iron fines and a binder in an electric arc furnace are all provided.

The invention relates to a feedstock composite comprising a metal oxide fraction and a carbonaceous fraction, a binder composition and the use thereof for obtaining the feedstock composite. Further, the invention refers to a method for obtaining the feedstock composite.

The application describes pellets comprising particulate iron ore and between 0.05 and 1.0% by weight of an organic binder. The use of such pellets in electric arc furnaces to produce steel is also described.

Solid agglomerated product, such as a briquette (B), which can be used as charge material for an electric arc furnace, comprising at least one by-product fraction (M; M1, M2, M3) deriving from a steel plant and comprising a first part containing ferrous oxide FeO and a second part containing ferric oxide Fe.sub.2O.sub.3, a solid fuel fraction (CR) containing a quantity of carbon (C_fix) and at least one inorganic binder to agglomerate a by-product fraction (M; M1, M2, M3) and the solid fuel fraction (CR) together and give the required mechanical properties to the agglomerate.

Composition in the form of green or thermally treated briquettes comprising at least one quick calcium-magnesium compound comprising an iron-based compound and method of production thereof as well uses thereof.

Composition in the form of green or thermally treated briquettes comprising at least one quick calcium-magnesium compound and an iron-based compound, the method of production thereof and uses thereof.