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.

Composition based on quick calcium-magnesium compounds in the form of briquettes, characterised in that said composition comprises 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 said composition, said composition in the form of briquettes having a Shatter test index of less than 10% and the method for preparation and use thereof.

A method for processing fines bearing iron or other metals, such as manganese, bauxite, boron, chromium, iron-nickel and/or ferrous slags, from various possible sources, possibly with the addition of self-reducing agents and other minerals for chemical adjustment, with particle size up to 6.3 mm (through ? inch sieve), directly into the intense mixer, with a set of binders in specific proportions, aiming to optimize physical and metallurgical properties of the briquettes with minimal binder addition, thus not compromising the quality of steel or other metal products. The binders are starch, sodium silicate and a base such as sodium hydroxide. The mixture with adjusted moisture content goes through a conventional briquetting roller press. The green briquettes then undergo drying with forced air at around 150? C. for a short time, or at ambient temperature for a longer time. The briquettes obtained have excellent metallurgical properties, and sufficient physical resistance for handling and transport, without the high and undesirable economic and environmental costs of the hot briquetting process.

A method for processing fines bearing iron or other metals, such as manganese, bauxite, boron, chromium, iron-nickel and/or ferrous slags, from various possible sources, possibly with the addition of self-reducing agents and other minerals for chemical adjustment, with particle size up to 6.3 mm (through ? inch sieve), directly into the intense mixer, with a set of binders in specific proportions, aiming to optimize physical and metallurgical properties of the briquettes with minimal binder addition, thus not compromising the quality of steel or other metal products. The binders are starch, sodium silicate and a base such as sodium hydroxide. The mixture with adjusted moisture content goes through a conventional briquetting roller press. The green briquettes then undergo drying with forced air at around 150? C. for a short time, or at ambient temperature for a longer time. The briquettes obtained have excellent metallurgical properties, and sufficient physical resistance for handling and transport, without the high and undesirable economic and environmental costs of the hot briquetting process.

A smelting method capable of obtaining an iron-nickel alloy having a high nickel grade of 4% or higher by effectively facilitating a reduction reaction of pellets formed using a nickel oxide ore as a raw material. The present invention is a method for smelting a nickel oxide ore, by which an iron-nickel alloy is obtained by forming pellets from a nickel oxide ore and reducing and heating the pellets. In the pellet production step S1, a mixture is obtained by mixing raw materials that contain at least a nickel oxide ore and a carbonaceous reducing agent. In the reduction step S2, a furnace floor carbonaceous reducing agent is laid on the floor of the smelting furnace in advance when placing the obtained pellets in the smelting furnace and the pellets are placed on the furnace floor carbonaceous reducing agent and then reduced and heated.

A smelting method capable of obtaining an iron-nickel alloy having a high nickel grade of 4% or higher by effectively facilitating a reduction reaction of pellets formed using a nickel oxide ore as a raw material. The present invention is a method for smelting a nickel oxide ore, by which an iron-nickel alloy is obtained by forming pellets from a nickel oxide ore and reducing and heating the pellets. In the pellet production step S1, a mixture is obtained by mixing raw materials that contain at least a nickel oxide ore and a carbonaceous reducing agent. In the reduction step S2, a furnace floor carbonaceous reducing agent is laid on the floor of the smelting furnace in advance when placing the obtained pellets in the smelting furnace and the pellets are placed on the furnace floor carbonaceous reducing agent and then reduced and heated.

The instant invention relates to a binder composition for pelletization of fine mineral particles comprising a) at least one colloid agent which exerts a cohesive force on the mineral particles forming the pellets, and b) at least one synthetic polymer which disperses mineral particles evenly in the pellets.

The instant invention relates to a binder composition for pelletization of fine mineral particles comprising a) at least one colloid agent which exerts a cohesive force on the mineral particles forming the pellets, and b) at least one synthetic polymer which disperses mineral particles evenly in the pellets.

Described are solid agglomerates of fine metal particles and methods for manufacturing same. A liquid oily lubricant is used in the manufacture of the solid agglomerates. The manufacturing comprises blending fine metal particles with the liquid oily lubricant and compacting the oily metallic mixture obtained to desired solid form. Advantageously, the solid agglomerates possess a desirable density, a suitable resistance to crumbling and dusting during handling, and they can resist to high temperature and to humidity. Solid agglomerated metal products, according to the invention, may be useful for different purposes such as quality charge material for steel plants, blast furnaces and foundries.