FERRONICKEL PRODUCING METHOD AND METHOD FOR PRODUCING INITIAL MATERIAL USED FOR PRODUCING FERRONICKEL Russian patent published in 2007 - IPC C22C33/04 C21B13/08 

FIELD: metallurgy, namely effective process for producing ferronickel with use of low-grade oxide-nickel ore.

SUBSTANCE: method comprises steps of mixing initial material containing nickel oxide and iron oxide with carbon containing reducing agent; granulating mixture with use of granulator; heating prepared granules and reducing them in furnace with movable hearth; regulating time period of granules presence in furnace with movable hearth in such a way that to obtain reduced granules in which nickel metallization degree is equal to 40% or more and iron metallization degree is less at least by 15% than nickel metallization degree. Ferronickel with high content of nickel is produced due to melting reduced granules in melting furnace.

EFFECT: stable process for producing ferronickel at small cost, high efficiency and with high content of nickel while using low-grade initial material containing nickel oxide.

9 cl, 6 ex, 9 dwg