Korean Journal of Metals and Materials (대한금속재료학회지)

The Korean Institute of Metals and Materials (대한금속재료학회)
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Study on the Reduction of Molten EAF Slag

용융 전기로 슬래그의 환원반응에 관한 연구

  • Joo, Seong-Woong (Division of Material Science and Engineering, Inha University) ;
  • Shin, Jong-Dae (Division of Material Science and Engineering, Inha University) ;
  • Shin, Dong-Kyung (Division of Material Science and Engineering, Inha University) ;
  • Hong, Seong-Hun (Division of Material Science and Engineering, Inha University) ;
  • Ki, Jun-Sung (Production Engineering Team, Hyundai Steel) ;
  • Hwang, Jin-Il (Production Engineering Team, Hyundai Steel) ;
  • You, Byung-Don (Division of Material Science and Engineering, Inha University)
  • 주성웅 (인하대학교 신소재공학부) ;
  • 신종대 (인하대학교 신소재공학부) ;
  • 신동경 (인하대학교 신소재공학부) ;
  • 홍성훈 (인하대학교 신소재공학부) ;
  • 기준성 (현대제철 생산기술팀) ;
  • 황진일 (현대제철 생산기술팀) ;
  • 유병돈 (인하대학교 신소재공학부)
  • Received : 2012.02.13
  • Published : 2012.10.25
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Abstract

The reduction behavior of low level oxides such as (T.Fe), (MnO) and ($P_2O_5$) in molten EAF slag was investigated using commercial reductants. In an air atmosphere, the slag volume increased and the reduction rate of the slag was very low due to the oxidation loss of reductants by oxygen in the air. The reduction rate of the slag was also low when a commercial reductant was used alone in an Ar gas atmosphere. The reason is probably because the material transfer through the interface between the slag and reductant is difficult due to the formation of high melting point oxide. When reductants were mixed with burnt lime in order to form low melting point reaction products, the reduction rate of the slag increased up to the range of 45-70%. By using the mixtures of reductants and burnt lime so as to form a low melting point slag at the reaction end, the reduction rate of the slag was improved up to 60-85%.

Keywords

Acknowledgement

Grant : 에코 철강슬래그 제조를 위한 그린 프로세스 개발

Supported by : 지식경제부

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