FLUX MATERIAL USED FOR CONVERTERS WITH MAGNESITE LINING Russian patent published in 2009 - IPC C21C5/28 

FIELD: metallurgy industry.

SUBSTANCE: invention refers to metallurgy industry, and namely to steel making. Flux material consists of magnesian flux with magnesium oxide content of at least 20%, and slag induction component. Red clay containing a mixture of aluminium, iron, silicon, magnesium and calcium oxides at the following component ratio, wt %, is used as slag induction component: aluminium oxide - 12 to 27, iron oxides (FeO+Fe₂O₃) - 2.5 to 15, silicon oxide - 43 to 74, magnesium oxide - 0.7 to 7.3, calcium oxide - 0.5 to 7.7, alkaline metals oxides (Na₂O, K₂O) - 1.4 to 8.7, and impurities of other minerals - 0.9 to 5.6. At that relation between red clay and magnesian flux, wt %, is as follows: red clay - 10 to 40, and flux - the rest.

EFFECT: providing the possibility of controlling melting point of slag-forming mixture with simultaneous minimisation of converter wall lining damage, and enlarging the number of slag-forming means for steel industry.

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