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Iranian Journal of Materials Science and Engineering، جلد ۱۰، شماره ۴، صفحات ۱۸-۳۰
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عنوان انگلیسی A KINETIC STUDY ON THE CARBOTHERMIC REDUCTION OF ZINC OXIDE FROM ELECTRIC ARC FURNACE DUST
چکیده انگلیسی مقاله In the present study, reduction of zinc oxide from the pellets made of steelmaking electric arc furnace dust has been investigated. Effects of such parameters as the type of carbon material (graphite, coke and charcoal) as well as time and temperature on the reduction reaction have been examined. The reduced (dimensionless) time method was applied to perform a kinetic analysis of the system. Experimental results showed that increasing the temperature in the range of 925-1150°C results in a remarkable increase in the reduction rate. It was also shown that the reduction process is controlled by chemical reaction. Meaningful difference in the activation energy values calculated for reduction with graphite (24.75 kcal/mol), coke (18.13 kcal/mol) and charcoal (11.52 kcal/mol) indicate the predominant role of chemical reaction (carbon gasification) in the overall reaction rate and its rate-controlling mechanism. Carbothermal reduction of pelletized EAF dust proved to be an efficient reduction method, so that above 90% reduction was achieved in about one hour at temperatures around 1100°C.
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نویسندگان مقاله m sheikhshab بافقی | m sheikhshab bafghi
school of metallurgical amp;amp; materials engineering, iran university of science and technology iust , narmak,tehran,iran

سازمان اصلی تایید شده: دانشگاه علم و صنعت ایران (Iran university of science and technology)

کریمی | m karimi
school of metallurgical amp;amp; materials engineering, iran university of science and technology iust , narmak,tehran,iran

سازمان اصلی تایید شده: دانشگاه علم و صنعت ایران (Iran university of science and technology)

m عادلی | m adeli
school of metallurgical amp;amp; materials engineering, iran university of science and technology iust , narmak,tehran,iran

سازمان اصلی تایید شده: دانشگاه علم و صنعت ایران (Iran university of science and technology)

نشانی اینترنتی http://ijmse.iust.ac.ir/browse.php?a_code=A-10-127-33&slc_lang=en&sid=en
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زبان مقاله منتشر شده en
موضوعات مقاله منتشر شده گروه مهندسی مواد . مباحث ویژه
نوع مقاله منتشر شده Research paper
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