A method for producing briquettes from pellet fines, DRI sludge, DRI fines and dust from DRI dedusting systems and, in this way, reincorporating same into steel production processes, thereby contributing to the re-use of the by-products of these processes, as well as minimizing the stocks of these types of materials and, consequently, helping to improve the environment. The invention comprises: grinding and sieving the pellet fines and the DRI sludge; sieving the DRI fines; storing the dust from DRI dedusting systems; briquetting with roller presses, using liquid sodium silicate and bentonite or composite Portland cement as binders; sieving the briquettes; shredding the edges and waste of the fresh briquettes; and curing in order to improve the physical properties thereof, such as strength. Once cured, the fresh briquette can be stored or sent directly to direct-reduced iron production processes for use as part of the feedstock for reduction ovens or reactors.

Methods for the treatment of metallic particles such as heavy metal particles and objects contaminated with the metallic particles. For the treatment of objects contaminated with the metallic particles, a stabilizing composition may be applied to the object with or without a fixation agent. For the treatment of free-flowing metallic particles, an agglomeration agent may be used with or without a stabilizing agent.

Methods for the treatment of metallic particles such as heavy metal particles and objects contaminated with the metallic particles. For the treatment of objects contaminated with the metallic particles, a stabilizing composition may be applied to the object with or without a fixation agent. For the treatment of free-flowing metallic particles, an agglomeration agent may be used with or without a stabilizing agent.

A composition based on quick calcium-magnesium compounds in the form of briquettes is shown, as well as a method for the preparation and use thereof. The composition of the briquettes contains quicklime in the form of milled particles at a concentration of at least 10% by weight and at most 100% by weight relative to the weight of the composition. The compositions in the form of briquettes have a Shatter test index of less than 10%.

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 that has: a drying step in which a mixture that was obtained by mixing a metal oxide and a carbonaceous reducing agent is dried; a preheating step in which the dried mixture is preheated; a reduction step in which the preheated mixture is reduced using a rotary hearth furnace, said rotary hearth having a hearth that rotates and not having a partition structure in an interior; and a cooling step in which the obtained reduced product is cooled.

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.

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 comprising an iron-based compound and method of production thereof as well uses thereof.