Method for compounding sintered raw material and method for producing sintered ore

摘要

Problem to be solved: to provide a mixing method of sintered raw material capable of improving the production rate.Iron ore is mixed to satisfy the following conditions.74. Ltoreq. (WB + WC); 100. Times. WB / (WB + WC) ≧ 50, WB and WC are the mass ratios of iron ore belonging to the first and second classifications for all iron ores of the sintered raw material.The first and second classifications are regions defined by the following conditions in the coordinate system in which mass ratio Al2O3 / T.Fe and mass ratio d-0.25 are set as the coordinate axes.The conditions of the first classification are "CB2 at < mass ratio Al2O3 / T.Fe < CB1 at" and "mass ratio d-0.25 < CB Dr", and the conditions of the second classification are "CB2 at < mass ratio Al2O3 / T.Fe < CB1 at" and "CB Dr < mass ratio d-0" . 25.CB1. Sub. -- at is within the range of 0.035 to 0.045, CB2 at is a value in the range of 0.020 to 0.023, and CB DR is within a range of 10 to 20.Diagram