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川崎製鉄技報
KAWASAKI STEEL GIHO
Vol.31 (1999) No.1
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製銑研究 10 年の歩み
Recent Activities in Research of Ironmaking

板谷  宏(Hiroshi Itaya)
要旨 :
日本の製銑技術を概括し,製銑研究のここ 10 年の活動を紹介した。コークス,焼結,高炉,新製錬それぞれの分野で成果を上げてきた。コークス分野では石炭配合の技術により安価炭の多量使用と押し詰まり防止に貢献し,焼結分野では X 線 CT などの新たな実験手法に基づく焼結反応の基礎研究や新規な原料装入装置の開発によりコストダウンに寄与してきた。一方,高炉分野では新炉頂装入装置,分布制御技術,操業シミュレータを開発し,安定操業,安価原料多量使用を実現してきた。新製錬分野ではステンレスダスト処理の STAR 炉を実機化し,電気炉ダスト処理への展開を図っている。
Synopsis :
Recent ironmaking technologies in Japan are briefly reviewed, and R&D activities of ironmaking laboratory in these past ten years are described. The activities are rewarded with cost reduction and stable operation in all areas of cokemaking, sintering, blast furnace and new smelting. In the area of cokemaking, the contributions to usage of a large amount of low cost semi soft coal and the decrease in the trouble of hard push were brought about through coal blending technologies. In the field of sintering, fundamental studies on sinter reaction based on new experimental methods such as X-ray CT and also a newly developed charging apparatus of raw material contributed to cost reduction. On the other hand, in the blast furnace technologies, a new charging system of the furnace top, burden distribution control technology and computer simulation system for blast furnace operation are developed. These developments have realized a stable operation and also the large amount use of low cost burden and fuel. In the area of smelting reduction, a commercial plant of STAR process for stainless steel dust recycling has started its operation and the application of this process to electric arc furnace dust recycling is under development.
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