| 摘要 |
PURPOSE: A sintering truck with a high air permeability is provided which improves productivity and recovery ratio by increasing air permeability of the lower part of a bed of the sintering truck during manufacturing of sintered ore in which fine iron ore used as a principal raw material is manufactured into sintered ore in a blast furnace. CONSTITUTION: In a sintering truck(100) having a grate bar(10) on which vents are formed so as to enable ventilation during sintering operation of blended materials charged and which is installed at the lower part of a bed, the sintering truck with a high air permeability comprises vents(30) a plurality of which are installed at the body(10a) of the grate bar(10) in a length direction, and at the center of the inner part of which vent holes(32) additionally enabling ventilation of the blended raw materials are formed, wherein the vents(30) further comprises screw parts(34) connected to screw grooves(10b) a plurality of which are formed in a length direction of the grate bar(10), and triangular pyramid shaped protrusion parts(36) which are integrally formed at the upper side of the screw parts(34), and wherein the vent holes(32) are integrally penetrated into the center of the inner parts of the protrusion parts(36) and the screw parts(34), and lower and upper parts of which have different diameters so that the vent holes(32) are formed in a cone shape.
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