METHOD OF COMBINED PROCESSING OF OXIDED AND CARBONATE FERROMANGANESE ORES Russian patent published in 2009 - IPC C22C33/04 C22B1/00 

FIELD: metallurgy.

SUBSTANCE: invention relates to the ferrous metallurgy field, particularly to manufacturing of ferroalloys, particularly to creation of methods of combined processing of oxided and carbonate ferromanganese ores with receiving of manganese ferroalloys. Method includes separate preliminary enrichment of mentioned ores with receiving of oxide and carbonate concentrates, fractionating, separation of large and agglomerating of undersize particles, smelting from them low-phosphorus dross (LPD), received from carbonate concentrates, and low-phosphorus dross (LPD), received from oxide concentrate, usage of the latter at smelting of carbonaceous ferro- and silicon manganese, herewith smelting of carbonaceous ferromanganese is implemented by flux-free process with usage in the capacity of crude ore of carbonate concentrates and low-phosphorus dross (LPD) with receiving of charge manganese slag, and melting of silicon manganese is implemented from charge, consisting of charge manganese slag from smelting of carbonaceous ferromanganese, low-phosphorus dross (LPD), quartzite and carbonaceous reducer.

EFFECT: invention provides increasing of through extraction of manganese ensured by sharing of low-phosphorus dross, received from oxide and carbonate manganese concentrates and improvement of ferroalloy quality.

15 tbl, 3 dwg, 2 ex