FERROTITANIUM USED TO ALLOY THE STEEL AND THE METHOD OF ITS ALUMINO-THERMAL PRODUCTION OF THE FERROTITANIUM Russian patent published in 2008 - IPC C22C33/04 C22C35/00 

FIELD: metallurgy industry; other industries; methods of the alumo-thermal production of ferrotitanium.

SUBSTANCE: the invention is pertaining to the field of metallurgy, in particular, to production of alloys used for alloying, for example, the corrosion-proof steels. The ferrotitanium contains the components at the following ratio (in mass %):titanium - 48-56; aluminum - 10-16; silicon -up to 3; molybdenum - up to 0.1; zirconium - up to 0.3; copper - up to 0.9; vanadium - up to 0.8; carbon - up to 0.10; phosphorus - up to 0.06; sulfur - up to 0.03; tin - up to 0.02; iron - the rest. At first exercise the smelting penetration of the ignition part of the burden containing the ilmenite concentrate, aluminum, the oxidant and lime, then exercise the smelting penetration in the electric furnace of the ilmenite and rutile concentrates in the ratio of the masses of (0.8-1.2 : 1) in the amount of 60-75 % of the whole titanium raw with the lime, recover by aluminum the oxides of the melt and simultaneously of the loaded residual part of the ilmenite concentrate, and right after the termination of the recovery of the oxides they exercise the heat tapping of the smelt products. The invention allows to reduce the specific consumption of aluminum by 10-15 % and the iron oxides, considerably to reduce the contents of the harmful impurities, and also the ratio of aluminum and silicon to titanium in ferrotitanium.

EFFECT: the invention ensures the reduced specific consumption of aluminum by 10-15 % and the iron oxides, the considerable reduction of the contents of the harmful impurities, and also the ratio of aluminum and silicon to titanium in ferrotitanium.

2 cl, 2 ex, 2 tbl