Reduction reactions of carbon composite iron ore pellets in shaft furnaces and possibility for assisting the enhanced blast furnace functions.

Accession number;05A0248798
Title;Reduction reactions of carbon composite iron ore pellets in shaft furnaces and possibility for assisting the enhanced blast furnace functions.
Author; MATSUI YOSHIYUKI (Kobe Steel, Ltd., Kakogawa Works, JPN) KASAI AKITO (Kobe Steel, Ltd., Kakogawa Works, JPN) SAWAYAMA MUNEYOSHI (Kobe Steel, Ltd., Kakogawa Works, JPN) MIYAGAWA KAZUYA (Kobe Steel, Ltd., Kakogawa Works, JPN) YAMAGATA JINRO (Kobe Steel, Ltd., Kakogawa Works, JPN) YOSHIDA YASUO (Kobe Steel, Ltd., Kakogawa Works, JPN)
Journal Title;Current Advances in Materials and Processes
Journal Code:X0994A
ISSN:0914-6628
VOL.18;NO.1;PAGE.42-45(2005)
Figure&Table&Reference;FIG.7, TBL.3, REF.10
Pub. Country;Japan
Language;Japanese
Abstract;The reduction and melting behavior of hot-formed carbon composite iron ore briquettes (CCIP) are reported with respect to the lower shaft height, and applicability of the ore system to the next-generation furnaces is discussed. The furnace conditions are investigated by the high-rate reduction and endothermic reaction reduction experiment with charging CCIP briquettes of coal 22% and fine ores of 78% with the cast iron coke of low reactivity in a shaft furnace. The gas distribution in a furnace with uses of briquette raw materials, furnace temperature distribution, carbon balance and heat balance are shown. The expectation for reinforced functions of a blast furnace by CCIP low temperature operation, and life extension, compact blast furnaces, and increased productivity and economic affects are discussed with respect to the productivity and the operational elasticity.