PROCESSING METHOD OF ILMENITE CONCENTRATES Russian patent published in 2009 - IPC C22B34/12 C22B4/00 

FIELD: metallurgy.

SUBSTANCE: charge consisting of ilmenite concentrate and carbonaceous reducing agent in ratio 1:(0.09-0.15) respectively are grinned up to size particle size 40-73 micron, it is mixed with binding agent and with addition of water in amount 6-7.3% of mass, there are manufactured pellets and they are dried at temperature 200-400°C. Pellets metallisation is implemented in pipe furnace at temperature 1100-1300°C. Hot pellets are molten in electric furnace at temperature 1830-1870°C and melt is isolated in electric furnace before poring during 3-5% of total duration of melting. In the capacity of ilmenite concentrate there are used iron-titanic concentrates with low content of admixtures, containing 50-55% % TiO₂, 32-36% FeO, 10-15% Fe₂O₃, up to 0.5% AL₂O₃, up to 0.8% SiO₂, up to 0.1% Cr₂O₃, up to 0.6% MnO, up to 0.05% P₂O₅, up to 0.3% V₂O₅, up to 0.1% CaO and up to 0.7% MgO. Used during reduction processes carbonaceous reducing agent - blast-furnace coke, pitch coke, petroleum coke, coal contains active carbon not less than 80% and sulphur not more 1%.

EFFECT: receiving of titanic slag with high content of TiO₂.

5 cl, 1 tbl, 1 ex