METHOD OF IRON ORE SINTERING Russian patent published in 2014 - IPC C22B1/16 

FIELD: metallurgy.

SUBSTANCE: proposed method comprises preparing the charge for sintering, composing the sintering charge, mixing and pelletizing the charge, placing the bed and charge at sintering machine, sintering the charge and processing the sintering cake. Mixed charge is moistened in pelletizing to 5.5-8.0% by pulp containing 1.0-2.7% of dusty wastes of aspiration plants at crushing-and-sorting and sintering plants for processing of fluxing limestones. The latter represent mainly the tiff (CaCO3) and the mix of minerals of hydrogoethite, hydrohematite, goethite, siderite, pyrolusite, and psilomelan of particle size of 0.074 mm up to 85 wt % of the following chemical composition in wt %: Fe₂O₃=2.15; SiO₂=1.7; Al₂O₃=0.24; MgO=0.44; CaO=52.72; Fe=1.5; Na₂O=0.019; K₂O=0.027.

EFFECT: higher impact strength and yield.