자원리싸이클링 (Resources Recycling)

  • 제24권4호
  • /
  • Pages.67-75
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  • 2015
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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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국내 석탄화력발전소 석탄회 중 희유금속 가치 평가

Evaluation of Some Rare Metals and Rare Earth Metals Contained in Coal Ash of Coal-fired Power Plants in Korea

  • 박석운 (한국전력공사 전력연구원) ;
  • 김재관 (한국전력공사 전력연구원) ;
  • 이형범 (한국전력공사 전력연구원) ;
  • 서연석 (한국전력공사 전력연구원) ;
  • 홍준석 (한국전력공사 전력연구원) ;
  • 이현동 (한국전력공사 전력연구원)
  • 투고 : 2015.06.16
  • 심사 : 2015.07.29
  • 발행 : 2015.08.31
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초록

국내 석탄화력발전소 11곳의 석탄회(비산재, 바닥재 및 매립회) 및 매립장 상등수를 채취하여 희유금속의 함량분포를 살펴보았다. 주요 전략광물인 이트륨(Yttrium) 및 네오디뮴(Neodymium)의 경우 약 23 ~ 75 mg/kg 범위로 나타났으며 별도의 회수기술 개발에 대한 가치가 충분한 것으로 판단되었다. 연간 발생하는 비산재 및 바닥재와 더불어 매립회의 양을 감안하면 국내 석탄화력발전소가 보유하고 있는 희유금속은 약 1.67조 원의 가치가 있는 것으로 조사되어 도시광산으로서 충분한 경제적 가치가 있는 것으로 판단된다.

The content distributions of some rare metals and rare earthe metals in coal ash (fly ash, bottom ash and pond ash) and leachate from coal-fired power plants were investigated. In case of Yttrium (Y) and Neodymium (Nd) which were strategic critical elements, their contents were ranged from about 23 ~ 75 mg/kg and it is shown they are worth to be developed for the recovery and separation method. Considering the annual amount of fly ash and bottom ash and pond ash, coal-fired power plants have great value of about 1,670 billion KRW and it is regards they are worthy as urban mines.

키워드

참고문헌

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피인용 문헌

  1. 에틸렌글리콜법을 활용한 국내 순환유동층보일러 석탄회의 Free CaO 평가 연구 vol.26, pp.1, 2017, https://doi.org/10.5855/energy.2017.26.1.001
  2. 발전회를 이용한 광산환경 복원사례 연구 vol.26, pp.2, 2017, https://doi.org/10.7844/kirr.2017.26.2.80
  3. 국내 순환유동층보일러 석탄재의 희토류 분포 특성 및 평가 vol.27, pp.6, 2018, https://doi.org/10.7844/kirr.2018.27.6.68
  4. 석탄재에 포함된 희토류의 경제성 평가 vol.28, pp.6, 2019, https://doi.org/10.7844/kirr.2019.28.6.26