Method for producing a sintered ore with variation monitoring method and a monitoring method of a sintered ore quality in the manufacture of sinter

摘要

PROBLEM TO BE SOLVED: To improve the yield and productivity of a sintered ore by keeping the quality of the sintered ore constant with elapsed time by inhibiting the change of the quality of the sintered ore with elapsed time.;SOLUTION: In a sintered ore production method for producing the sintered ore with a continuous sintering machine, (a) the image of the fracture surface of a sintered cake with an exposed red-hot zone at the time of ore discharge is periodically taken with an imaging device set at the ore discharge part of the continuous sintering machine, (b) at every image taken, (b1) the areal ratio Z (%) of the red-hot zone image to the entire image taken is calculated, (b2) the image taken is divided into n portions in the width direction of the sintered cake, and the areal ratio Zm (m=1 to n) (%) of the red-hot zone image to the corresponding divided image for every image is calculated, and (b3), the standard deviation σw of the areal ratio Zm (m=1 to n) (%) is calculated on the basis of the areal ratio Z (%), and (c) the change of the standard deviation σw with elapsed time is monitored.;COPYRIGHT: (C)2013,JPO&INPIT