Journal of the Korean Applied Science and Technology (한국응용과학기술학회지)

The Korean Society of Applied Science and Technology (한국응용과학기술학회)
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The Properties of Aluminium Alloy Powder for Aluminothermy Process with $Mn_3O_4$ Waste Dust

$Mn_3O_4$ 분진의 Al 테르밋 반응용 Al 합금분말의 특성

  • 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)
  • 김윤채 (강원대학교 삼척캠퍼스 재료금속공학과) ;
  • 송영준 (강원대학교 삼척캠퍼스 재료금속공학과) ;
  • 박영구 (강원대학교 삼척캠퍼스 환경공학과)
  • Received : 2013.02.11
  • Accepted : 2013.03.22
  • Published : 2013.03.30
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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.

알루미늄 테르밋 반응의 환원제로서 알루미늄 분말은 200 메쉬 이하의 미분이 필요하나, 알루미늄의 높은 인성과 분말 제조비 때문에 경제적으로 용이하지 않다. 그러므로 $Mn_3O_4$ 분진 환원용 알루미늄 미분의 제조 코스트를 낮추기 위해, 알루미늄 합금분말의 제특성이 검토되었다. 망간을 다량 함유한 알루미늄 합금괴는 취성이 큰 금속간 화합물을 함유하고 있기 때문에 쉽게 파쇄할 수 있다. 또 망간은 망간 합금철의 주성분이다. Al-15%Mn 합금분말을 기계적 파쇄법으로 저렴하게 제조할 수 있다. Al 분말 대신에 Al-15%Mn 합금분말을 사용한 테르밋 반응 결과는 환원제로 순 알루미늄 분말을 사용한 경우와 같이 고순도 망간 합금철을 얻을 수 있었다. Al-15%Mn 합금분말를 이용한 $Mn_3O_4$ 분진의 망간 회수율은 알루미늄 분말을 이용한 경우의 약 65% 보다 높은 약 70%의 높은 수준을 보였으며, 이는 비산이 적은 것에 기인한다.

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References

  1. H. Goldschmidt, The journal of the Society of Chemical Industry, 6(17), 543(1989).
  2. Y. C. Kim, Y. J. Song, and Y, K, Park, A Study on Making of High-Purity Ferro-Manganese from Mn3O4 Waste Dust, J. of Korean Oil Chemists' Soc., 2(28), 135(2011).
  3. Y. C. Kim, Y. J. Song, and Y, K, Park, Recycling of Ferro Manganese Furnace Dust Collected from Converter, The Journal of the Korean Institute of Resources Recycling, 21(3), 21(2012). https://doi.org/10.7844/kirr.2012.21.3.021
  4. (社）粉末冶金技術協会, "金属粉の生成" ｐ175, 日刊工業新聞, 東京, 日本(1964).
  5. E. Williams, Production of Aluminum Powder, Metals Handbook 9th ed. ; Powder Metallurgy Vol. 7, p125-130, ASM Materials Park, Ohio, USA(1984).
  6. 渡辺てるひさ, 第３章 粉末冶金の基礎技術, "新版 粉末冶金", p 6, 技術書院, 東京, 日本 (1992).
  7. R. M. German, Chapter 3 Powder Fabrication, "Powder Metallurgy & Particulate Materials Processing", p. 55-116, MPIF, New Jersey, USA(2005).
  8. 長崎誠三, 平林眞, "二元合金状態図集", p34, アグネ技術センター, 東京, 日本 (2006).
  9. P. Schaffer, Saxena, D. Antolovich, H. Sanders, Jr., and B. Warner, "The Science and Design of Engineering Materials", p 52, McGraw-Hill, New York, USA(1999).
  10. 田邊伊佐雄, 豊田敏夫, 今野尚雄, 低鉄高 炭素フョロマンガンの崩壊現象について, 日 本金属学会 (5), P272 (1959).
  11. 西山善次, 幸田成康, "金属の電子顕微鏡写 真と解説", p. 138, 丸善, 東京, 日本 (1975).