Resources Recycling (자원리싸이클링)

The Korean Institute of Resources Recycling (한국자원리싸이클링학회)
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Leaching of Black Dross by Hydrochloric Acid Solutions

염산용액에 의한 블랙드로스의 침출

  • Nguyen, Thi Thuy Nhi (Department of Advanced Materials Science & Engineering, Institute of Rare Metal, Mokpo National University) ;
  • Nguyen, Thi Hong (Department of Advanced Materials Science & Engineering, Institute of Rare Metal, Mokpo National University) ;
  • Lee, Man Seung (Department of Advanced Materials Science & Engineering, Institute of Rare Metal, Mokpo National University)
  • ;
  • ;
  • 이만승 (목포대학교 신소재공학과)
  • Received : 2017.09.21
  • Accepted : 2017.10.25
  • Published : 2017.12.31
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Abstract

Leaching of black dross with HCl solution was conducted to find a suitable process to recover valauble materials. In this work, the leaching behavior of the components was compared between black dross and the residues after water treatment. All the components except $TiO_2$ in the black dross were dissolved by HCl solution in the experimental ranges. Treatment of the black dross with water to recover the salts has negative effect on the leaching of $Al_2O_3$, MgO and $SiO_2$. The reactions occuring during the leaching were discussed. At an optimum leaching condition of 3 M HCl and $90^{\circ}C$, the leaching percentage of $Al_2O_3$, MgO and $SiO_2$ was 85, 100 and 40%, respectively.

블랙드로스에 함유된 유가성분을 회수하기 위한 공정을 개발하기 위해 염산용액으로 침출실험을 수행했다. 블랙드로스와 물로 처리한 잔사의 침출거동을 비교했다. 본 연구의 실험범위에서 블랙드로스에 함유된 성분중 $TiO_2$를 제외한 모든 성분이 염산에 용해되었다. 물로 블랙드로스를 처리하면 알루미나, 마그네시아, 실리카의 침출율이 저하되었으며, 침출반응을 고찰했다. 3M의 염산과 반응온도 $90^{\circ}C$에서 알루미나, 마그네시아, 실리카의 침출율은 85, 100, 40%이었다.

Keywords

References

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