Method for removing iron pieces mixed into sintered ore

摘要

PROBLEM TO BE SOLVED: To remove an iron piece mixed in sintered ore by rigorously distinguishing the iron piece from the sintered ore having fluctuating magnetism and detecting the distinguished iron piece without lowering a utilization rate of a sintering machine.;SOLUTION: A method for removing the iron piece mixed in sintered ore conveyed on conveyor belts by two stages comprises: a first step of detecting the iron piece having a predetermined reference value or a value higher than the reference value and removing the detected iron piece; and a second step of detecting the iron piece having a value lower than the reference value and removing the detected iron piece. The sintered ore cooled in a circular cooler 2 is conveyed while being mounted on a conveyor belt 3 and then on another conveyor belt 4 and the mixed iron piece is detected by a metal detector 6 at the first step. The iron piece in the sintered ore conveyed while changing over from the conveyor belt 4 to a different conveyor belt 5 is detected by another metal detector 7 arranged at the second step and the iron piece is removed automatically together with the sintered ore by using an iron piece removing machine 8 having a magnet while operating the conveyor belt 5.;COPYRIGHT: (C)2014,JPO&INPIT