METAL COATING METHOD OF IRON-ORE RAW MATERIAL WITH OBTAINMENT OF GRANULATED CAST IRON Russian patent published in 2013 - IPC C21B11/06 C21B13/08 

FIELD: metallurgy.

SUBSTANCE: method involves dosing of iron-ore raw material, solid fuel, a binding agent and flux additives, mixing and pelletising of initial charge, drying and heat treatment of pellets in a furnace with a rotating bottom so that pelletised cast iron is obtained, cooling, crushing and separation of pelletised cast iron from slag. In dead rock of charge there provided are ratios of CaO/MgO, SiO₂/Al₂O₃ compounds within the limits of 2-5 and 4-6 respectively so that melting point of primary slag does not exceed 1400°C. The method's implementation allows improving production capacity of a unit owing to reducing iron losses and decreasing power consumption as to heat for heating of a furnace.

EFFECT: improving production efficiency of pelletised cast iron.

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