Resources Recycling (자원리싸이클링)

The Korean Institute of Resources Recycling (한국자원리싸이클링학회)
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Evaluation of Some Rare Metals and Rare Earth Metals Contained in Coal Ash of Coal-fired Power Plants in Korea

국내 석탄화력발전소 석탄회 중 희유금속 가치 평가

  • 박석운 (한국전력공사 전력연구원) ;
  • 김재관 (한국전력공사 전력연구원) ;
  • 이형범 (한국전력공사 전력연구원) ;
  • 서연석 (한국전력공사 전력연구원) ;
  • 홍준석 (한국전력공사 전력연구원) ;
  • 이현동 (한국전력공사 전력연구원)
  • Received : 2015.06.16
  • Accepted : 2015.07.29
  • Published : 2015.08.31
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Abstract

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.

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.

Keywords

References

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