Proceedings of the Korean Society for Technology of Plasticity Conference (한국소성가공학회:학술대회논문집)

The Korean Society for Technology of Plasticity and materials processing (한국소성∙가공학회)
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Study on the Reaction Characteristics of Self-reducing $Nb_2O_5$ Briquettes

자기 환원성 $Nb_2O_5$ 브리켓의 반응특성 연구

  • 김민석 (인하대학교 공과대학 신소재공학부) ;
  • 유병돈 (인하대학교 공과대학 신소재공학부) ;
  • 위창현 (인하대학교 공과대학 신소재공학부) ;
  • 윤덕재 (한국생산기술연구원 디지털생산공정연구팀) ;
  • 최석우 (한국생산기술연구원 디지털생산공정연구팀)
  • Published : 2005.05.01
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Abstract

The reduction behavior of $Nb_2O_5$ in aluminum containing self-reducing briquettes(SRNB) was investigated. The time required for slag/metal equilibrium was estimated as about 20 minutes from the addition of SRNB on to the surface of molten steel. The maximum yield of Nb was expected with the slag composition of $60\%CaO-40\%Al_2O_3$. When $CaCO_3$ was used as a flux, the oxidation loss of Al by $CO_2$ should be compensated, and the chemical equivalent ratio of Al to $Nb_2O_5$ of about 1.43 was required to maximize the yield of Nb.

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