METHOD OF PRODUCTION OF FLUSHING AGGLOMERATE Russian patent published in 2005 - IPC

FIELD: metallurgy; production of agglomerate for blast furnace process.

SUBSTANCE: proposed method includes introduction of charge in form of ore part of iron-ore concentrate at content of iron more than 63% and sintered ore, fluxing with dolomitized limestone, limestone and/or lime in the amount sufficient for obtaining ratio MgO/CaO≤0.2 at basicity of CaO/SiO₂≤0.7, introduction of fuel into charge, mixing, nodulizing and layer-by-layer loading of charge on sintering trucks of conveyer machine, ignition of fuel and performing sintering process by suction of air through layer of vacuum chamber. Flow rate of fuel P_f, kg/t of ore portion of charge, speed of motion of sintering trucks V_tr, m/min and temperature in last vacuum chamber t_v, °C are determined by the following formulae: P_f=3.7FeO; Vtr=1.83-0.02 FeO; t_v= 315-5 FeO, where FeO is preset content of iron monooxide in flushing agglomerate.

EFFECT: possibility of obtaining required content of FeO, control of fuel flow rate and speed of sintering trucks and temperature in last vacuum chamber.

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