SORTING METHOD OF STEEL SLAG, RECYCLING METHOD OF STEEL SLAG, AND PRODUCTION METHOD OF IRONMAKING RAW MATERIAL

摘要

PROBLEM TO BE SOLVED: To provide a sorting method which can select steel slag into three or more types in a form suitable for reuse while suppressing an increase in magnetic force sorting steps.SOLUTION: The sorting method of steel slag comprises: a crushing step of crushing steel slag to produce crushed slag; a first magnetic force sorting step of sorting the crushed slag into first magnetic substances and first non-magnetic substances; a classification step of sieving the first magnetic substances into coarse grains and fine grains; and a second magnetic force sorting step of sorting the fine grains into second magnetic substances and second non-magnetic substances. The method further includes a drying step of drying at least one of the crushed slag, the first magnetic substances and the fine grains.SELECTED DRAWING: Figure 1