| 摘要 |
FIELD: metallurgy.SUBSTANCE: invention relates to ferrous metallurgy, specifically to production of iron-ore pellets. At pelletiser bottom there is a slag lining; wet charge is supplied to pelletiser in two flows, first flow is added to compressed gas flow in housing of jet device to form a gas wet charge jet, formed at pelletiser bottom zone occupied with charge and zone free of charge. Nucleation with charge sputtering on slag lining gas wet charge jet in zone free from charge so that dense layer of wet charge, and its longitudinal division by means of plate-like blades and transverse fission into nuclei by means of rotary drum with ribs. Scull is cleaned from nuclei and shell is formed by additional pelletising of pellets with charge of second flow. Simultaneously with cross division of sputtered layer on nuclei, in latter through holes are made with diameter 2-5 mm using rods arranged equidistant between ribs of drum with an interval between neighbouring rods, equal to size of nuclei, wherein said rods are moistened before making holes.EFFECT: invention provides higher strength of pellets and efficiency of pelletiser.1 cl, 3 dwg, 1 tbl, 1 ex |
