Webb Ziesenheim Bruening Logsdon Orkin & Hanson, P.C.
Method for manufacturing coal agglomerates for use in direct iron smelting reducing furnace
 A method for manufacturing coal agglomerates for use in a direct smelting reducing furnace is disclosed, in which a fine coal is agglomerated at a high temperature in a simple manner, or anthracite or low free swelling coal having a low free swelling index is mixed with the fine coal, and the mixture is agglomerated at a high temperature, thereby turning the low quality coal to useful purpose. The present invention is characterized in that a fine coal having a free swelling index of 3.0 or more and a particle size of 8 mm or less, or the fine coal mixed with 70 weight % of anthracite or a low free swelling coal, is maintained at 600.degree. C. or over for 5 minutes or more, thereby manufacturing coal agglomerates for use in a direct smelting reducing furnace. 
Research Institute of Industrial Science & Technology Voest-Alpine Industrieanlagenbau Pohang Iron & Steel Co., Ltd.
C C C
C10L C10L C21B
inventional inventional inventional
Dal Hoi Min Young Young Chae
Lee Cho Jung