Resources Recycling (자원리싸이클링)

The Korean Institute of Resources Recycling (한국자원리싸이클링학회)
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Sulfuric Acid Leaching of Manganese from Ferromanganese Dust

황산에 의한 페로망간 집진분 중의 망간 침출

  • Park, Suji (School of Materials Science and Engineering, Kyungpook National University) ;
  • Sohn, Ho-Sang (School of Materials Science and Engineering, Kyungpook National University)
  • 박수지 (경북대학교 신소재공학부) ;
  • 손호상 (경북대학교 신소재공학부)
  • Received : 2015.09.04
  • Accepted : 2015.10.16
  • Published : 2015.12.30
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Abstract

The sulfuric acid leaching of ferromanganese dust was studied. The effect of acid concentration, reaction temperature, stirring rate, particle size and solid to liquid ratio on Mn and Fe extraction in the solution were investigated. It was found that the leaching rate of Mn and Fe increased with increasing reaction temperature and sulfuric acid concentration. Examination of data by shrinking core model suggested that the leaching rate is controlled by chemical reaction at the surface of particle. The activation energy for the leaching reaction of Mn and Fe were calculated to be 79.55 kJ/mol and 77.48 kJ/mol, respectively.

본 연구에서는 페로망간 제조공정에서 발생한 집진분의 황산침출에 대하여 조사하였다. 황산의 농도, 반응온도, 교반속도, 입자크기 및 고-액비가 집진분 중의 Mn과 Fe의 침출에 미치는 영향에 대하여 검토하였다. Mn과 Fe의 침출속도는 황산의 농도가 높고 반응온도가 높을수록 높아졌다. 실험결과를 입자수축모델을 이용하여 검토한 결과 침출반응은 입자표면에서의 화학반응에 의해서 율속되는 것으로 생각된다. Mn과 Fe 침출반응의 활성화에너지는 각각 79.55 kJ/mol과 77.48 kJ/mol로 계산되었다.

Keywords

References

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