RU2008126864A - METHOD FOR PRODUCING HIGH PERCENT FERROTITANIUM - Google Patents

Abstract

1. A method for producing high-percentage ferrotitanium (50-70% Ti) from titanium-containing oxide raw materials by an out-of-furnace aluminothermal method in a smelting unit - a reactor that provides separate or joint discharge of smelting products, including: at the first stage, melting of the charge with a calculated heat of 17.9-19, 0 kcal / g-atom, containing ilmenite concentrate (titanomagnetite, rutile, perovskite), iron ore, lime and (or) calcium peroxide CaO2 and berthollet's salt KClO3, aluminum powder in the ratio of components to titanium dioxide in the charge,! TiO2Fetotal CaOCaO2KClO3Al 10.4-1.250-0.30.4-00.35-00.2-0.6! and separate drain of metal iron; at the second stage of smelting, the melting of the charge containing ilmenite (titanomagnetite, perovskite), rutile concentrates, lime and (or) calcium peroxide CaO2 and berthollet salt KClO3, aluminum powder, iron ore, ground ferrosilicon 65-75% in an amount of titanium dioxide equal to 0.7 of the amount of titanium dioxide at the first stage or exceeding it by 3 times, and with the ratio of other components of the charge to TiO2 of the given part of the charge (2nd stage),! TiO2Fetotal CaOCaO2KClO3AlFeSi 65-75% 0.7-3.00.05-0.70.1-00.1-0.40.2-00.4-1.00-0.5! and separate or joint discharge of 50-70% ferrotitanium and slag, while the aluminum powder in the second part is calculated for the recovery of a part of titanium oxides, iron oxides and thermite additives of the charge, as well as for the recovery of a part of titanium oxides in the slag melt obtained at the first stage of melting, taking into account the fact that the heat of the charge is also calculated such that is necessary for the out-of-furnace aluminothermic process, equal to 17-5-19 kcal / g-atom. ! 2. A method different from the proposed p

Claims (2)

1. The method of producing high-percentage ferrotitanium (50-70% Ti) from oxide titanium-containing raw materials by the extra-furnace aluminothermic method in a melting unit - reactor, providing separate or joint discharge of melting products, including: at the first stage, the charge is melted with a calculated thermality of 17.9-19, 0 kcal / g atom containing ilmenite concentrate (titanomagnetite, rutile, perovskite), iron ore, lime and (or) calcium peroxide CaO ₂ and Bertholite salt KClO ₃ , aluminum powder in the ratio of components to titanium dioxide in the charge, TiO ₂ Fe _total Cao CaO ₂ KClO ₃ Al one 0.4-1.25 0-0.3 0.4-0 0.35-0 0.2-0.6 and separate discharge of metallic iron; at the second stage of smelting, the melting of a mixture containing ilmenite (titanomagnetite, perovskite), rutile concentrates, lime and (or) calcium peroxide CaO ₂ and Bertholite salt KClO ₃ , aluminum powder, iron ore, ground ferrosilicon 65-75% in the amount of titanium dioxide equal to 0.7 times the amount of titanium dioxide in the first stage or higher than 3 times and with the ratio of other components of the charge to TiO _{2 in} this part of the charge (2 ^nd ctadii) TiO ₂ Fe _total Cao CaO ₂ KClO ₃ Al FeSi 65-75% 0.7-3.0 0.05-0.7 0.1-0 0.1-0.4 0.2-0 0.4-1.0 0-0.5 and separate or joint discharge of 50-70% of ferrotitanium and slag, while the aluminum powder in the second part is calculated to restore part of the titanium oxides, iron oxides and thermite additives of the charge, as well as to restore part of the titanium oxides in the slag melt obtained at the first stage of melting, taking into account the fact that the thermality of the charge is also calculated such that is necessary for an extra-furnace aluminothermic process, equal to 17-5-19 kcal / g-atom. 2. A method that differs from that proposed by claim 1. the fact that after the end of stage II of smelting and separate discharge of metal, stage III carries out a secondary deep reduction of titanium oxide-rich slag (20-30%) with a pre-reduction charge consisting of ilmenite (perovskite, titanomagnetite, rutile) concentrate, iron ore, lime and (or) calcium peroxide CaO ₂ and ₃ KSlO potassium chlorate, aluminum powder, ground 65-75% ferrosilicon in an amount of titanium dioxide, equal to 0.1-1.5 of the amount of titanium dioxide in the first stage and in a ratio of components of this part ihty to TiO _{2 in} this part of burden ^(-s step 3), TiO ₂ Fe _total Cao CaO ₂ KClO ₃ Al FeSi 65-75% 0.1-1.5 0.3-5.0 0-1.5 0.4-0 0.3-0 0.5-6.0 0-1.0 in this case, aluminum powder in part III is calculated for the reduction of titanium and iron oxides, termite additives from the charge, as well as titanium oxides in the slag melt after the second stage of melting.