METHOD FOR SCOURING OF BLAST FURNACE Russian patent published in 2005 - IPC

Abstract RU 2248400 C1

FIELD: metallurgy, in particular cast iron manufacturing in blast furnace.

SUBSTANCE: clamed method includes charging of main batch components and interrupted charging of scouring material doses in form of metal flux containing CaO, MnO, FeO, and SiO₂ with basic capacity up to 4.0 in mixture with quartzite. Quartzite consumption is determined according the equation: K_B = (CaO_MF + MnO_MF/2 + FeO₂/2 - SiO_2MF)100SiO_2KB, wherein K_B is quartzite consumption, kg/kg; CaO_MF, MnO_MF, FeO₂, SiO_2MF are CaO, MnO, FeO, and SiO₂content in metal flux; SiO_2KB is SiO₂(mass %) content in quartzite, and scouring material dose is 0.01-0.1 parts of charged ore. Ratio of coke consumption and scouring material dose is 1:(1-5); scouring is carried out up to temperature differences in crucible and bottom cooler of 1.5⁰C and heat-flux density of 5 kW/m². Method of present invention makes it possible to increase capability by 5.4 %.

EFFECT: decreased relative cake consumption and improved capability.

2 cl, 1 ex, 3 tbl

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RU 2 248 400 C1

Authors

Shatokhin I.M.

Sibagatullin S.K.

Dates

2005-03-20—Published

2004-02-16—Filed