Characterization of Ajaokuta Coke for Blast Furnace Ironmaking
Affiliation(s)
Department of Materials Science and Engineering,Faculty of Technology,Obafemi Awolowo University, Ile-Ife, Osun State, Nigeria.. National Metallurgical Development Centre (NMDC), P.M.B. 2116,Jos, Plateau State. Nigeria.
Department of Materials Science and Engineering,Faculty of Technology,Obafemi Awolowo University, Ile-Ife, Osun State, Nigeria.. National Metallurgical Development Centre (NMDC), P.M.B. 2116,Jos, Plateau State. Nigeria.
ABSTRACT
The 300kg coke sample received from Ajaokuta Steel Plant was subjected to proximate analysis and pilot scale size distribution test. The proximate analysis showed that the coke contains 0.38%, 13.45%, 2.72% and 0.14% of moisture, ash, volatile matter and sulphur respectively; while size distribution test gave micum 10 and micum 40 of 3.62% and 89.67% respectively. Therefore, the coke satisfies the blast furnace requirements for moisture, sulphur and micum strength. However, its ash and volatile contents exceed the specified limits except for Indian standard practice.
The 300kg coke sample received from Ajaokuta Steel Plant was subjected to proximate analysis and pilot scale size distribution test. The proximate analysis showed that the coke contains 0.38%, 13.45%, 2.72% and 0.14% of moisture, ash, volatile matter and sulphur respectively; while size distribution test gave micum 10 and micum 40 of 3.62% and 89.67% respectively. Therefore, the coke satisfies the blast furnace requirements for moisture, sulphur and micum strength. However, its ash and volatile contents exceed the specified limits except for Indian standard practice.
Cite this paper
A. Adeleke, R. Makan and S. Ibitoye, "Characterization of Ajaokuta Coke for Blast Furnace Ironmaking," Journal of Minerals and Materials Characterization and Engineering, Vol. 5 No. 2, 2006, pp. 155-165. doi: 10.4236/jmmce.2006.52011.
A. Adeleke, R. Makan and S. Ibitoye, "Characterization of Ajaokuta Coke for Blast Furnace Ironmaking," Journal of Minerals and Materials Characterization and Engineering, Vol. 5 No. 2, 2006, pp. 155-165. doi: 10.4236/jmmce.2006.52011.
References
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[1] Loison, R., Foch, P. and Boyer, A., 1989, Coke quality and production, Butterworth, London. [2] National Metallurgical Development Centre (NMDC) manual for pilot scale coke over plant, 1994, Jos, Nigeria. [3] Moitra, A.K., Banerjee, N.G. Shrinkhande, K.Y., Sing, K. Raja, K. and Banerjee, S (1992): Studies on coal carbonization in India, Central Fuel Research Institute (CFRI) publication, Calcutta. [4] Federal Ministry of Mines, Power and Steel circular, 1992, on Carbonization tests for Ajaokuta coke requirements, Lagos, Nigeria. [5] Task force, 1987, on the maximum utilization of Nigerian coals at the Ajaokuta Steel Plant, Lagos, Nigeria. [6] Anderson, D.F., 1992, “Trends in demand for and supply of coal and coke”, 2nd international cokemaking congress, London, pp. 9. [7] Garin, J., Pol, F. and Poulet, Ph., 1987, “Coal selection and blending practice at the USINOR coke oven plant”, 1st international cokemaking congress, Essen, section III. 2. [8] Brouwer, R. C., Schoone, E.E. and Toxopeus, H.L., 1992, “Coal Injection driven to the limits”, Iron and Steel Engineer, Vol. 69, No 12, pp. 22. [9] Zhan, X. and Xu, C., 1987, “The behaviour of coke by use of titaniferrous magnetite in blast furnace’, 1st international cokemaking congress, Essen, Section 12. [10] Weskamp, W., Rhode, W., Stewen, E., and Habermehl, D., 1987, “Greater coke strength through reactive additives to coking blends”, 1st International Cokemaking Congress, Essen, Section III. I. [11] Willmers R.R. and Bennington, C.R., 1992, “Coke quality requirements for efficient, high productivity blast furnace operation at high coal injection rates”, 2nd international coke making congress, London, pp. 275. [12] Rollason, E.C., 1973, Metallurgy for Engineers, The English Language Book Society and Edward Arnold Publisher. [13] Echterhoff, J., Killich, H.J. and Frick, H., 1992, “Production of blast furnace coke by stamp charging and utilization of recycled coke breeze”, 2nd international cokemaking congress, London, pp. 188.