PRETREATMENT METHOD OF SINTER RAW MATERIAL

摘要

PROBLEM TO BE SOLVED: To provide a pretreatment method of a sinter raw material capable of suppressing insufficiency of burning while sintering which is generated when a sinter raw material including many fine powders is granulated with high moisture content, and improving productivity of a sinter machine.SOLUTION: The pretreatment method of a sinter raw material is configured to; granulate a sinter raw material A including fine powders whose diameter is less than 500 μm by equal to or more than 15 mass% with 10 mass%-13 mass% of moisture content for forming a granulation object AA; mix a sinter raw material B with 0 mass%-9 mass% of moisture content to the granulation object AA for forming a granulation object AAB; and add the granulation object AAB to a granulation object CC formed by granulating a sinter raw material C including an iron ore and a coagulation material.