2024-03-28T19:17:15Zhttps://eprints.lib.hokudai.ac.jp/dspace-oai/requestoai:eprints.lib.hokudai.ac.jp:2115/829282022-11-17T02:08:08Zhdl_2115_20071hdl_2115_183Strength and Gasification Reactivity of Coke Prepared by Blending a Ca/C Composite and CoalMochizuki, YuukiTakahashi, MikiBud, JavzandolgorWang, YutingTsubouchi, Naotocokecalciumstrengthreactivitygasificationcompositecarbonaceous materialIn this study, a calcium/carbon composite (Ca/C) was prepared from porous Ca0 by the water vapor swelling method; its pores were filled with tar-derived carbonaceous material to produce high-strength and highly reactive coke. The properties of coke prepared by blending the Ca/C composite and caking-coal were then investigated. The mesopores in the swelling Ca disappeared and the crushing strength was developed by filling tar-derived carbonaceous material into the porous Ca. Thus, a Ca/C composite could be produced by the abovementioned method, wherein the tar-derived carbonaceous material and Ca species were in close proximity. When the Ca/C composite was blended into the caking-coal, the strength of the coke obtained increased by up to 50% of Ca/C blending, which made it possible to produce high-strength coke. On examining the C structure of the prepared coke by X-ray diffraction, that of the original coke was found to be almost unchanged by adding the Ca/C composite. Conversely, the Ca/C blended-coke showed higher CO2 gasification reactivity than the original coke prepared from caking-coal. Based on the CO2 gasification reactivity test of the demineralized coke, it was clear that an increase in the gasification reactivity of the Ca/C blended-coke depended upon the catalytic effect of Ca. Thus, this method helped produce high-strength and highly reactive coke.一般社団法人 日本鉄鋼協会 (The Iron and Steel Institute of Japan)Journal Articlehttp://hdl.handle.net/2115/829280915-1559ISIJ international618220022102021-08-15enginfo:doi/10.2355/isijinternational.ISIJINT-2020-622none