Carbonization of coals into anisotropic cokes: 8. Carbonization of a canadian weathered coal into anisotropic coke

✍ Scribed by Isao Mochida; Kenji Itoh; Yozo Korai; Takaaki Shimohara

• Book ID: 103093605
• Publisher: Elsevier Science
• Year: 1986
• Tongue: English
• Weight: 701 KB
• Volume: 65
• Category: Article
• ISSN: 0016-2361
• DOI: 10.1016/0016-2361(86)90309-1

✦ Synopsis

The carbonization properties ofa weathered high rank bituminous coal were compared with those ofthe nonweathered coal. The weathering decreased the fusibility of the coal to leave more basic anisotropy and to diminish the size of the majority of the anisotropy in the resulting coke. On the other hand, more domain and flow domain textures developed. Co-carbonization with a petroleum pitch additive (Ashland A240) was found effective in enhancing the fusibility of the coal and anisotropic development in the coke. Formed coking of the weathered coal by means ofcopreheat-treatment with the additive, provided an anisotropic, dense and strong coke of uniform size. For the weathered coal, the optimum copreheat-treatment was shorter than that using the non-weathered coal indicating high coking reactivity of the weathered coal. The transferable hydrogens from the additive are rapidly consumed by the oxygen containing groups of the weathered coal. (