METHOD OF IRON ORE SINTERING Russian patent published in 2013 - IPC C22B1/14 

FIELD: metallurgy.

SUBSTANCE: proposed method comprises preparing the charge for sintering, composing the sintering charge, mixing and pelletising the charge, placing the bed and charge at sintering machine, sintering the charge and processing the sintering cake. Mixed charge in pelletising is wetted to 7.5-10% by pulp containing 15.-2% of coal dust sized to below 0.10 mm and composed of coal processing wastes trapped by aspiration systems at transfer areas of the following chemical composition, in wt %: C=87.9; SiO₂=5.89; Al₂O₃=3.12; TiO₂=0.14; Fe₂O₃=1.21; CaO=0.53; MgO=0.12; K₂O+Na₂O=1.00; P₂O₅=0.08.

EFFECT: higher efficiency and impact strength, lower abradability and consumption of coke.