Purification of Zinc Oxide Using Direct Thermal Process by Petroleum Coke
DOI:
https://doi.org/10.31699/IJCPE.2009.1.6Abstract
The present investigation is concerned for the purification of impure zinc oxide (80-85 wt %) by using petroleum coke
(carbon content is 76 wt %) as reducing agent for the impure zinc oxide to provide pure zinc vapor, which will be
oxidized later by air to the pure zinc oxide.
The operating conditions of the reaction were studied in detail which are, reaction time within the range (10 to 30 min),
reaction temperature (900 to 1100 oC), air flow rate (0.2 to 1 l/min) and weight percentage of the reducing agent
(petroleum coke) in the feed (14 to 30 wt %).
The best operating conditions were (30 min) for the reaction time, (1100 oC) for the reaction temperature, (1 l/min) for
the air flow rate, and (30 wt %) of reducing material (petroleum coke) in the feed.
Under the above conditions, conversion of zinc oxide was (68.12 %) and the purity of the produced zinc oxide was
(97.85 %) by using petroleum coke as reducing material.
References
Abdullatif, A.R., “ Preparation and characterization of zinc oxide powder for ceramic industry ”, Ph.D. Thesis (Technology University, Iraq), 1996.
Morgan, S.W.K., “ Zinc and its alloy and compounds ”, Ellis Horwood Ltd., England, p.(218-223,26,56-59), 1985.
Shreve, R.N. , “ Chemical Process Industries ”, McGraw-Hill, Chem. Eng., Chem. Eng. Series, p.(434-436),1967.
Gilchrist, J.D., “ Extraction Metallurgy”, Pergamon Press. Ltd., England, 2nd ed., p.(390-393), 1980.
Bray, J.L., “ Non-ferrous production metallurgy”, Pergamon Press.Ltd. England, 2nd ed., p.(490-493), 1953.
Mair, C.G., J.Am.chem.Soc., Vol. 48, p.(364-374), 1926.
His-Kuei Chen, Scandinavian J. of Metallurgy, Vol.30, p.(292-296),2001.
Clarke, J.A., Chemistry and Industry, Jan. 6, p.(5-10), 1979.
Clark, J.A., and Fray, D.J., I.Chem.Symp., Series No. 43, 1975 (see ref. 38).
Clarke, J.A., “ Oxidation kinetics of zinc vapor” Thesis (Cambridge University), 1976 (see ref. 38).
Cox, A. and Fray, D.J.,“ Mineral Processing and Extractive Metallurgy”, Section C, Vol. 109, p.(97-104), 2001 (abstract).
Osborne, J.M., Rankin, W.J., McCarthy, D.J. and Swinbourne,D.R.,Metallurgical and Materials Transactions, section B, Vol. 32, No. 2, p.(37-45), 2001 (abstract).
Liddel, D.M. , “ Handbook of Nonferrous Metallurgy ”, Vol. 1, 2nd ed., p.(409-428), New York, McGraw-Hill Book Company, Inc. ,1945.
Welcher, F.J., ed. , “ Standard Methods of Chemical Analysis ”, D.Van Nostrand Co., Inc., Princeton, N.J., Vol. 2B, 6th ed., P. 1344,1963.
Anderson, S.L., “ Chemical Engineering Progress ”, Vol. 55, p. 10,1959.
Box, G.E., and Hunter, J.C., “ Ann. Math ”, Vol. 3, p. 195, 1957.
Davies, O.L., “ Design and analysis of industrial experiments ”, 1971.
Feki, M., and Vaillant, M., Canadian J. of Chem. Eng., Vol. 65, p. 132, 1987.
Downloads
Published
Issue
Section
License
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.
