鉄鉱石の流動層還元におけるスティッキングの発生機構とその防止法(溶融還元)(<特集>製銑)

概要

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Reduction of iron ore in a fluidized bed is limited by the agglomeration tendency of the bed particles, which causes defluidization. This defluidization is called 'Sticking phenomenon'. In this paper, experimental studies using a batch-fluidized bed reactor are carried out to clarify the mechanism and the prevention method of sticking. Following results are obtained. 1) Metallic iron wiskers which are generated on the surface of iron ore entangle the other particles and lead to sticking. 2) Sticking can be prevented by the carbon coating which restrains the growth of metallic iron whiskers. 3) If the metallic iron whiskers should grow, sticking can be prevented by controling the ratio of iron ore particles with wiskers below 50%.
社団法人日本鉄鋼協会の論文
1992-07-01