オァベッドにおける SiO_2 変動低減技術の開発

概要

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It is very important for reducing the fluctuation of sinter qualities to decrease the SiO_2 variation of the fine ore bed in sinter feed. In order to reduce the variation, a new bed monitoring system and an advanced bed stacker which controls the segregation of a stocked pile have been developed and applied to the actual plants. The results obtained from these activities are as follows ; 1) The SiO_2 variation is very remarkable at the bed reclaiming stage between fine ore bed and sinter pallet. 2) The SiO_2 variation can be estimated by the longitudinal and cross sectional bed model. 3) The SiO_2 variation of bed cross section (σ_W) is about seven times as large as in logitudibal bed direction (σ_L), and is related with the variation of sinter (σ_S). 4) It is effective for reducing the variation to adopt the advanced bed stacker. The variation can be reduced to half compared with result of the conventional system. 5) About 3 to 5% of returned fine and 3 to 4 kg/t of coke consumption can be reduced by introducing both the new monitoring system and the advanced bed stacker. 6) The SiO_2 variation of sinter (σ_S) can be reduced from 0.06∿0.09 wt% to 0.04∿0.05 wt% by introducing this system.
社団法人日本鉄鋼協会の論文
1988-10-01