Resources Recycling (자원리싸이클링)

The Korean Institute of Resources Recycling (한국자원리싸이클링학회)
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Fabrication of Mg(OH)2 from Ferro-Nickel Slag

페로니켈 슬래그를 이용(利用)한 수산화(水酸化)마그네슘 제조방법(製造方法)

  • Park, Soo Hyun (Energy & Environmental Division, Korea Institute of Ceramic Eng. & Tech.) ;
  • Chu, Yong Sik (Energy & Environmental Division, Korea Institute of Ceramic Eng. & Tech.) ;
  • Song, Hun (Energy & Environmental Division, Korea Institute of Ceramic Eng. & Tech.) ;
  • Lee, Jong Kyu (Energy & Environmental Division, Korea Institute of Ceramic Eng. & Tech.) ;
  • Seo, Sung Kwan (Energy & Environmental Division, Korea Institute of Ceramic Eng. & Tech.)
  • 박수현 (한국세라믹기술원 에너지환경소재본부) ;
  • 추용식 (한국세라믹기술원 에너지환경소재본부) ;
  • 송훈 (한국세라믹기술원 에너지환경소재본부) ;
  • 이종규 (한국세라믹기술원 에너지환경소재본부) ;
  • 서성관 (한국세라믹기술원 에너지환경소재본부)
  • Received : 2012.10.22
  • Accepted : 2012.12.17
  • Published : 2013.02.28
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Abstract

Ferro-Nickel slag is a byproduct of Ferro-Nickel manufacturing process. Ferro-Nickel slag mostly discarded or used as aggregates despite having useful ingredients such as magnesium oxide and silicon oxide. This study tried to extract process for Mg ion using $H_2SO_4$ solution. And remove impurities and get high purity $Mg(OH)_2$ using NaOH. Mg ion was extracted with the Fe ion and other Ferro-Nickel slag composition by $H_2SO_4$ solution. It is important to control the pH because remove impurities and obtain high-purity $Mg(OH)_2$. The impurities were removed by precipitation of the hydroxides. After this process, we added NaOH and high-purity $Mg(OH)_2$ was obtained.

페로니켈 슬래그는 페로니켈 제조 공정의 부산물이다. 페로니켈 슬래그가 마그네슘 산화물 및 규소 산화물 등 유용 성분을 갖는데도 불구하고 대부분이 폐기되거나 골재로 사용된다. 이 연구는 $H_2SO_4$ 용액을 사용하여 Mg 이온을 추출하고, NaOH 용액을 사용하여 불순물 제거 및 고순도의 $Mg(OH)_2$를 얻으려고 하였다. $H_2SO_4$ 용액에 의해 Mg 이온은 Fe 이온 및 기타 페로니켈 슬래그 구성 성분과 함께 추출되었다. 불순물을 제거하고 고순도의 $Mg(OH)_2$를 얻기 위해서는 침출액의 pH 조절이 중요하다. 불순물은 가수분해에 의한 수산화물 침전으로 제거하였다. 이 과정 후, 여과액에 NaOH를 첨가하여 고순도의 $Mg(OH)_2$을 얻었다.

Keywords

References

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