(2)A strong, highly reactive ‘lump’ form of coke canbe produced by adding a Ca-rich non-caking coal and adjusting the coal blend composition. The Ca-rich coke wassuccessfully produced in the commercial scale coke ovensboth at Kimitsu and Muroran works.(3)A laboratory scale experiment showed that the Ca-rich coke caused the temperature of the thermal reservezone in a blast furnace to decrease. By using the Ca-richcoke in the Muroran No. 2 blast furnace, the reducing agentrate decreased by 10kg/t-p.This technology, producing coke of high reactivity andstrength through catalyst addition, is promising as a meansof improving the reaction efficiency of a blast furnace. Inorder to successfully commercialize this technology, wewill continue to further study catalyst substances other thanCa-rich coal and alternative methods of adding the catalystto the coke, such as the ‘post-addition of catalyst to coke’method.