Quality of Some Nigerian Coals as Blending Stock in Metallurgical Coke Production
Quality of Some Nigerian Coals as Blending Stock in Metallurgical Coke Production作者机构：Chemistry Programme Abubakar Tafawa Balewa University PMB 248 Bauchi Nigeria Department of Chemistry Kaduna State University P.M.B 2339 Kaduna Nigeria
出 版 物：《Journal of Minerals and Materials Characterization and Engineering》 (矿物质和材料特性和工程（英文）)
年 卷 期：2011年第10卷第1期
页 面：101-109页
学科分类：1002[医学-临床医学] 100214[医学-肿瘤学] 10[医学]
主 题：coking coals blending Nigeria
摘 要：Two Nigerian coals, Lafia-Obi and Chikila were blended in the mass ratio of 70:30 with imported American and Polish coking coals. Proximate analysis, free swelling index, Ruhr dilatometer and Gieseler plastometer were used in assessing the coking qualities of both the single coals and the blends. The results show that the blends are lower in moisture and ash contents;higher in volatile matter and fixed carbon than the single Nigerian coals. The rheological parameters revealed superiority in thermo-plastic properties of the blends over the unblended local coals. Lafia-Obi/Foreign coals blends possess lower ash and better rheological properties compared to Chikila/Foreign coal composites which have high ash and poor rheological properties. These together suggest that amongst the two Nigerian coals, Lafia-Obi is superior for blending with the foreign ones in metallurgical coke production.
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