발간논문

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Vol.33, No.10, 1353 ~ 1360, 1995
Title
Study on the Fluidized Bed Reduction of Fine Iron Ore
정원섭W . S . Chung, 정현철H . C . Chung, 정원배W . B . Chung, 정우창W . C . Chung, 민동준D . J . Min
Abstract
In a smelting reduction method, the fluidized bed reactor is one of the most possible reactors for prereduction of fine iron ore. In this work, the reduction degree of fine iron ore(106∼212, 212∼250㎛) were measured from hematite to iron CO 100% gas in a batch-type fluidized bed. The rate parameters incluiding the present study were determined by using the reduction data. The reduction rate of fine iron ore increased with increasing temperature and gas flow rate, whereas that was decreased with increasing ore diameter and ore inventory. The apparent activation energy for the reaction is measured to be about 59-75 kJ/㏖. The fundamental data for the development of pre-reduction furnace by fluidized bed and direct iron-making process could be acquainted from this study.
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