BLAST FURNACE WASHING METHOD Russian patent published in 2015 - IPC C21B3/00 

FIELD: metallurgy.

SUBSTANCE: method includes dosing, loading of work and washing portions of the charge materials, their distribution on the throat using the bell-less top, charge melting and production of melting products. As the washing portion of the charge materials a mixture of agglomerate, pellets, pieces of iron ore and converter slag with SiO₂ content 2.4-4.4 of SiO₂ content in work iron ore portion, MnO content is 0.3-2.0 of MnO content in work iron ore portion, and basicity (CaO/SiO₂) is 0.12-0.5 of basicity of charge materials in the work iron ore portion is loaded. Prior to loading weight of the washing portion of the charge materials is determined based on weight ratio of work iron ore portion, numerical factor considering distribution of the washing portions, maximum number of angular positions of the tray of the bell-less top to distribute the work and washing portions of the charge materials.

EFFECT: improved capacity of the blast furnace and reduced specific consumption of coke due to effective cleaning of the coke nozzle and zone of non-mobile materials in the blast furnace of the coke destruction products.

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