EXOTHERMIC MIXTURE FOR STEEL DEOXIDATION, REFINING, INOCULATION AND ALLOYING Russian patent published in 2005 - IPC

FIELD: ferrous metallurgy; production of different marks of steel.

SUBSTANCE: the invention is pertaining to the field of ferrous metallurgy, and may be used in production of different marks of steel quality both at the out-of-furnace metallothermy of steel and during its casting. The technical result - decreased time of thermal treatment of steel at an increase of its quality at the expense of use of a universal composition of an exothermic mixture for deoxidation, refining, inoculation and alloying of steel, which may be used at production of different marks of steel for increasing efficiency of processes of refining, inoculation and alloying of the steel. The exothermic mixture for deoxidation, refining, inoculation and alloying of steel contains at the following ratio of components (in mass %): aluminum - 5.0-83, aluminum oxide - 2.5-75, calcium oxide - 0.5-10, magnesia oxide - no more than 8, ferric oxide - no more than 15, copper oxide - no more than 2, titanium oxide - no more than 7, manganese oxide - no more than 12, sodium and-or potassium oxides - 5-7. The mixture moisture does not exceed 2.2 %.

EFFECT: the invention ensures decreased time of thermal treatment of steel at an increase of its quality.

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