FLUXED IRON-ORE AGGLOMERATE PRODUCTION PROCESS Russian patent published in 2003 - IPC

Abstract RU 2219256 C1

FIELD: ferrous metallurgy. SUBSTANCE: in a process of agglomeration-mediated production of agglomerated blast-furnace raw material, the following operations are involved: dosing components, controlling intake of carbon into charge coming with solid fuel, mixing, agglomeration, and caking charge to yield agglomerate with constant predetermined iron content, continuously determining summary temperature of emission gases in three neighboring vacuum chambers, and forced cooling of agglomerate on cooler. Additionally, difference between content of ferrous oxide in agglomerate leaving agglomeration machine and that from cooler is measured and maintained within a range of 1.0 to 1.5%. Carbon consumption control is further effected from change in summary temperature of emission gases and deviation of this value from value corresponding to predetermined limits for ferrous oxide content difference. Consumption of carbon is changed by 0.075-0.1 wt % in inverse proportion to change in ferrous oxide content difference per each 0.1 wt %. EFFECT: increased strength of agglomerate with lower consumption of solid fuel in agglomeration process, stabilized high-temperature properties of agglomerate allowing its smelting in blast furnace with decreased heat reserve in furnace, and lowered consumption of coke. 2 tbl

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RU 2 219 256 C1

Authors

Nevraev V.P.

Gurkin M.A.

Jakushev Vladimir Sergeevich

Nesterov Aleksandr Stanislavovich

Dates

2003-12-20Published

2002-07-08Filed