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http://dx.doi.org/10.12925/jkocs.2013.30.1.071

The Properties of Aluminium Alloy Powder for Aluminothermy Process with $Mn_3O_4$ Waste Dust  

Kim, Youn-Che (Departments of Materials and Metallurgical Engineering, College of Engineering, Kangwon National University)
Song, Youn-Jun (Departments of Materials and Metallurgical Engineering, College of Engineering, Kangwon National University)
Park, Young-Koo (Departments of Environmental Engineering, College of Engineering, Kangwon National University)
Publication Information
Journal of the Korean Applied Science and Technology / v.30, no.1, 2013 , pp. 71-77 More about this Journal
Abstract
Aluminium powder as reductant in aluminothermy process needs a fine particle size under 200 mesh, but it is not easy economically to make that because of its high ductility and powder production cost. In order to reduce the production cost of fine aluminum powder as reductant of $Mn_3O_4$ waste dust, therefore, the properties of aluminium alloy powder were investigated. Aluminium alloy ingot containing large amount of manganese can be crushed easily because of its intermetallic compounds having brittle properties. The manganese is also main element in ferro-manganese. We can obtain economically Al-15%Mn alloy powder by mechanical comminution process. And the result of thermite reaction using Al-15% Mn alloy powder instead of pure Al powder showed the fact that can be obtained the ferro-manganese which have a high purity in case of using pure aluminium powder as reductant. The recovery of manganese from $Mn_3O_4$ waste dust with Al-15%Mn alloy powder was higher level of about 70% than about 65% in case of using aluminium powder, that is due to lower spatter loss.
Keywords
$Mn_3O_4$ waste dust; Aluminium powder; Aluminothermy process; Ferro-manganese; Reductant;
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Times Cited By KSCI : 2  (Citation Analysis)
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