FLUX FOR REDUCING, REFINING, MODIFYING AND ALLOYING STEEL Russian patent published in 2010 - IPC C22B9/10 C21C7/06 

FIELD: metallurgy.

SUBSTANCE: invention refers to ferrous metallurgy and can be implemented at production of various grades of steel for their reduction, refining, modifying and alloying both at out-of-furnace treatment and in process of casting. As flux there is used slag of aluminium production containing wt %: aluminium 1.0-60.0, aluminium oxides 1.0-50.0, also calcium oxide 0.28-1.0, magnesium oxide 1.0-10.0, iron oxide 1.0-9.0, silicon oxide 1.0-16.0, copper oxide 0.1-10.0, manganese oxide 0.1-2.0, zinc oxide 0.2-12.0, lead oxide 0.01-0.15, nickel oxide 0.01-0.15, chromium oxide 0.05-0.5, sodium chlorides 0.1-40.0, potassium chlorides 0.1-40.0. Flux can be used in form of lumps of 10-500 mm size, or in form of a pellet of 10-120 mm size produced by pressing or caking slag sifts of 2 mm size.

EFFECT: upgraded quality of steel, reduced prime cost, and reduced anthropogenic effect to atmosphere, soil and ground water due to utilisation of both newly formed slag and slag extracted form existing damps and waste burials in processes of ferrous metallurgy.

3 cl, 2 tbl, 3 ex