| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for operating a blast furnace by which the blast furnace can efficiently be operated by effectively using sewage sludge as a biomass resource. SOLUTION: The sewage sludge is added into the blast furnace as reducing agent and the reduction-treatment of iron ore is performed with carbon and hydrogen in the sewage sludge. As an additional method for the sewage sludge, a method for adding by blowing a material which finely pulverizes by further performing pulverize-treatment, from a tuyere in the blast furnace after dehydrate/dry-treating or carburize-treating the sewage sludge, or a method for adding a material which is granulate-hardened after dehydrate/dry-treating or carburize-treating the sewage sludge, from the furnace top or the tuyere in the blast furnace, is applied. COPYRIGHT: (C)2006,JPO&NCIPI
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