Resources Recycling (자원리싸이클링)

The Korean Institute of Resources Recycling (한국자원리싸이클링학회)
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Preparation of KCl through Removal of Heavy Metals from Chlorine By-Pass Dust

염소 바이패스 더스트를 이용한 염화칼륨 제조 및 중금속 제거

  • Yun, Youngmin (Eco-materials Business Team. Yeongwol Eco-Materials Industry Foundation) ;
  • Yeom, Nari (Eco-materials Business Team. Yeongwol Eco-Materials Industry Foundation) ;
  • Lee, Kabsoo (Eco-materials Business Team. Yeongwol Eco-Materials Industry Foundation) ;
  • Eom, Seonhui (Eco-materials Business Team. Yeongwol Eco-Materials Industry Foundation) ;
  • Lee, Yonghyun (Eco-materials Business Team. Yeongwol Eco-Materials Industry Foundation) ;
  • Chu, Yongsik (Eco Composite Materials Team. Energy & Environmental Division)
  • 윤영민 ((재)영월청정소재산업진흥원 청정소재사업팀) ;
  • 염나리 ((재)영월청정소재산업진흥원 청정소재사업팀) ;
  • 이갑수 ((재)영월청정소재산업진흥원 청정소재사업팀) ;
  • 엄선희 ((재)영월청정소재산업진흥원 청정소재사업팀) ;
  • 이용현 ((재)영월청정소재산업진흥원 청정소재사업팀) ;
  • 추용식 (한국세라믹기술원 에너지환경소재본부 에코복합소재센터)
  • Received : 2016.09.23
  • Accepted : 2017.02.27
  • Published : 2017.04.30
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Abstract

Many problems are occurred by using industrial by-product and municipal solid waste in the cement manufacturing process. The main components of chlorine by-pass dust generated by the use of the wastes are $K^+$, $Cl^-$, and a slight amount of heavy metals is also contained. In terms of waste recycling, it is necessary to eliminate the heavy metals. Therefore, in this study, the experiments for the removal of heavy metals from KCl which was produced by chlorine by-pass dust were conducted. In order to find optimum conditions for the removal of heavy metals, we have controlled the amount of water and precipitator. The type and concentration of heavy metals in KCl were analyzed. The concentration of heavy metals decreased as amount of precipitator increased. The heavy metals such as Pb, Cd, and As were not detected in dust A and B, when the mixing ratios between dust A(B) and water were controlled to be 1:2 (1:2, 1:3.5) with the addition of 3% precipitator (NaOCl).

시멘트 공정에서는 산업부산물 및 생활폐기물 적용에 따른 여러 문제점들이 발생한다. 이들 폐기물 사용에 따라 발생하는 염소 바이패스 더스트의 주성분은 칼륨과 염소이며, 소량의 중금속이 함유되어 있다. 따라서 폐기물 재활용 측면에서, 염소 바이패스 더스트 내 중금속 제거가 필요하다. 본 연구에서는 염소 바이패스 더스트를 용해하여 제조되는 염화칼륨 내 중금속 제거 실험을 진행하였다. 최적의 중금속 제거 조건을 도출하기 위해 증류수 함량, 침전제 투입량을 제어하였다. 이에 따라 제조된 염화칼륨 분말 내 존재하는 중금속 종류 함량 등을 분석하였다. 침전제 투입량 증가에 따라 중금속 Pb의 함량이 감소하였다. A더스트와 증류수의 배합비 1:2, 침전제(NaOCl) 3%, B 더스트와 증류수의 배합비 1:2, 1:3.5, 침전제 3% 조건에서 중금속 Pb, Cd 및 As가 모두 불검출 되었다.

Keywords

References

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