자원리싸이클링 (Resources Recycling)

  • 제27권3호
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  • Pages.30-38
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  • 2018
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  • 2765-3439(pISSN)
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  • 2765-3447(eISSN)
한국자원리싸이클링학회 (The Korean Institute of Resources Recycling)
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일메나이트 광의 Fe 선택염화 거동에 미치는 환원제의 영향에 관한 연구

The Effects of Reductants on the Behaviors of Fe Selective Chlorination using an Ilmenite Ore

  • 손용익 (경북대학교 자동차부품소재연구소) ;
  • 손호상 (경북대학교 자동차부품소재연구소) ;
  • 정재영 (경북대학교 자동차부품소재연구소)
  • Son, Yongik (Automobile Parts & Materials Research Center, Kyungpook National University) ;
  • Sohn, Ho-Sang (Automobile Parts & Materials Research Center, Kyungpook National University) ;
  • Jung, Jae-Young (Automobile Parts & Materials Research Center, Kyungpook National University)
  • 투고 : 2018.03.07
  • 심사 : 2018.04.19
  • 발행 : 2018.06.30
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초록

본 연구는 1173 K에서 60분 동안 유지하는 조건하에 PVC 또는 $CO-Cl_2$ 혼합가스를 각각 사용하여 환원제에 따른 ilmenite ore의 Fe 선택염화 거동에 대해 조사하였다. 환원제로 PVC를 사용한 경우, 무게 감소율은 28%로 관찰되었다. 그리고 반응관 출구부위에 생성된 응축물은 X-선 회절 분석결과 $FeCl_2$로 확인되었다. 이러한 결과로부터 ilmenite ore 내의 철은 HCl 가스와 반응하였고 $FeCl_2$ 형태로 Fe만 선택적으로 제거된 것으로 관찰하였다. 그러나 환원제로 $CO-Cl_2$ 혼합가스를 사용한 경우, 무게 감소 비율은 54%로 관찰되었으며, 실험 종료 후 반응관 출구부위에 생성된 응축물은 $FeCl_3$로 추측할 수 있었다. 이를 통해 ilmenite ore는 $CO-Cl_2$ 혼합가스와 반응하여 $FeCl_3$ 및 $TiCl_4$ 반응물 형태로 동시에 제거되는 것으로 관찰되었다. 다만 반응후 ilmenite ore의 X선 회절 결과에서 Fe는 대부분 제거되었음을 보여주었다.

In this study, the behaviors of Fe selective chlorination in ilmenite ore by using PVC or $CO-Cl_2$ gas mixture as reducing agents under the condition of 1173 K, for 60 minutes were investigated. The weight loss ratio was 28% when PVC was applied as the reducing agent. The condensate formed at the outlet of reaction tube was identified as $FeCl_2$ by X-ray diffraction analysis. From these results, it was observed that iron in ilmenite ore reacted with HCl gas and Fe was selectively removed in the form $FeCl_2$. However, when $CO-Cl_2$ gas mixture was used as a reducing agent, the weight reduction ratio was 54%, and the condensate formed at the outlet of reaction tube after the experiment was estimated to be $FeCl_3$. It was observed that the ilmenite ore reacted with the $CO-Cl_2$ gas mixture and was simultaneously removed in the form of $FeCl_3$ and $TiCl_4$. However, the results of X-ray diffraction of ilmenite ore after the reaction showed that Fe was almost removed.

키워드

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