Journal of the Korean Applied Science and Technology (한국응용과학기술학회지)

The Korean Society of Applied Science and Technology (한국응용과학기술학회)
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Recovery of manganese compounds from electric arc furnace dust by Aluminothermy Process

테르밋 반응을 이용한 페로망간 전기로 분진의 재활용에 관한 연구

  • 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)
  • 하태영 (경희대학교 환경과학공학과) ;
  • 조영민 (경희대학교 환경과학공학과) ;
  • 박영구 (강원대학교 삼척캠퍼스 환경공학과) ;
  • 김윤채 (강원대학교 삼척캠퍼스 재료금속공학과)
  • Received : 2015.02.09
  • Accepted : 2015.03.25
  • Published : 2015.03.30
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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.

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References

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