| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for producing sintered ore, in the case of largely blending fine ore (pellet feeder), capable of improving sintered ore productivity and sintered ore strength.SOLUTION: Provided is a method for producing sintered ore having the main granulation stage and auxiliary granulation stage where sintering raw material is divided into the main sintering raw material and auxiliary raw material, and each is mixed and granulated in parallel, the respective granules produced in the main granulation step and auxiliary are mixed, and the mixed granules are fired. In the auxiliary granulation step, the ratio between the fine ores and powder ores as a part of the auxiliary sintering raw material is 1.5/1 to below 3/1, the binder being calcium oxide and cracked ore, and the ratio of the cracked ore is 3 to below 7 mass% to the auxiliary raw material.SELECTED DRAWING: Figure 5 |
