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http://dx.doi.org/10.12925/jkocs.2015.32.1.23

Recovery of manganese compounds from electric arc furnace dust by Aluminothermy Process  

Ha, Tae-Young (Department of Environmental Science and Engineering, Kyung Hee University)
Jo, Young-Min (Department of Environmental Science and Engineering, Kyung Hee University)
Park, Young-Koo (Department of Environmental Engineering, College of Engineering, Kangwon National University)
Kim, Youn-Che (Department of Materials and Metallurgical Engineering, College of Engineering, Kangwon National University)
Publication Information
Journal of the Korean Applied Science and Technology / v.32, no.1, 2015 , pp. 23-30 More about this Journal
Abstract
The properties of dust collected from electric arc furnace of ferro manganese production units was investigated, and also the metallic manganese was recovered from the dust by aluminothermy process. The ferromanganese dust collected from electric arc furnace contained about 15% of manganese oxide ($Mn_3O_4$) and 9% of carbon as the contaminant, and have a 5um of 50% median diameter and irregular particle shape. The carbon contaminant in the dust could be reduced until about 0.1~0.5% level by roasting in the air at a temperature of 600~900C for 60minutes. The recovery of manganese could not be carried out using only ferromanganese dust from electric arc furnace by aluminothermy process, but the ferromanganese which contained manganese of about 92% and iron of about 5% could be obtained from the mixture of ferromanganese dusts from electric arc furnace and converter. The best mixing condition of dust fixed at electric arc furnace dust / converter dust ratio of 1:9 and 2:8, and the mixing rato of 3:7 or more could not separated the metal and slag from the reactant after aluminothermy reaction.
Keywords
Electric arc furnace dust; Aluminothermy process; Ferromanganese; Manganese oxide; Roasting;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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