An Experimental Study on Iron Recovery from Steelmaking Slag by Microwave Heating

마이크로웨이브 가열(加熱)을 이용(利用)한 제철(製鐵) 슬래그 중 철(鐵) 회수(回收)에 관한 실험적(實驗的) 연구(硏究)

  • Kim, Tae-Young (Department of Materials Science and Engineering, Korea University) ;
  • Kim, Eun-Ju (Department of Materials Science and Engineering, Korea University) ;
  • Shin, Min-Soo (Department of Materials Science and Engineering, Korea University) ;
  • Lee, Joon-Ho (Department of Materials Science and Engineering, Korea University)
  • 김태영 (고려대학교 신소재공학과) ;
  • 김은주 (고려대학교 신소재공학과) ;
  • 신민수 (고려대학교 신소재공학과) ;
  • 이준호 (고려대학교 신소재공학과)
  • Published : 2010.02.26

Abstract

In order to understand the microwave carbothermic reduction of steelmaking slag to recover Fe, the effects of gas atmosphere and carbon addition on the carbothermic reduction behavior of CaO-$SiO_2$-FeO slag were investigated. It was found that the maximum temperature and the reduction rate were higher in air than in nitrogen atmosphere. In addition, under air atmosphere, the maximum temperature and the reduction rate were increased by increasing the amount of additive carbon. When the carbon equivalent is 5, the maximum temperature reached as high as 1800K and the reduction rate was approximately 90%. As the Carbon equivalent increased further, the maximum temperature and the reduction rate did not change.

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