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Strength and Gasification Reactivity of Coke Prepared by Blending a Ca/C Composite and Coal

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Title: Strength and Gasification Reactivity of Coke Prepared by Blending a Ca/C Composite and Coal
Authors: Mochizuki, Yuuki Browse this author →KAKEN DB
Takahashi, Miki Browse this author
Bud, Javzandolgor Browse this author
Wang, Yuting Browse this author
Tsubouchi, Naoto Browse this author →KAKEN DB
Keywords: coke
carbonaceous material
Issue Date: 15-Aug-2021
Publisher: 一般社団法人 日本鉄鋼協会 (The Iron and Steel Institute of Japan)
Journal Title: ISIJ international
Volume: 61
Issue: 8
Start Page: 2200
End Page: 2210
Publisher DOI: 10.2355/isijinternational.ISIJINT-2020-622
Abstract: In 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.
Type: article
Appears in Collections:エネルギー・マテリアル融合領域研究センター (Center for Advanced Research of Energy and Material) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

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