高反応性コークスの製造開発について : 革新的製銑プロセスの開発(<特集>鉄鋼業における省エネ・炭酸ガス削減技術の取り組み)

概要

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In these years, the development of innovative energy saving technologies for climate change is strongly desired, and radical low reduction agent ratio (RAR) operation in the blast furnace is required. As a mean of realizing low RAR operation, the development of an innovative raw material "Carbon Iron Composite (CIC)" for satisfying both high coke reactivity and iron ore reduction is thought to be useful. Industrial-government-academic complex carried out NEDO activities "Strategic Development of Energy Conservation Technology Project" for about three years from November, 2006. In this review, the results of the study in this project are introduced. Carbon Iron Composite is produced by mixing the non-or slightly caking coal and low grade iron ore and briquetting, followed by carbonization of the briquetted materials. Carbon Iron Composite having both high strength and high reactivity was successfully produced at the blending ratio of iron ore of 30mass%. Investigation of CO_2 reactivity of CIC at the condition of gas composition and temperature in the blast furnace revealed that starting temperature of CO_2 reaction and the thermal reserve zone temperature lowered.
一般社団法人日本エネルギー学会の論文
2010-01-20