Journal of the Korean Applied Science and Technology (한국응용과학기술학회지)

The Korean Society of Applied Science and Technology (한국응용과학기술학회)
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The Elution effects by Sulfuric acid in the EAF dust

황산용액에 의한 제강분진 중 중금속의 용출효과

  • Jeong, Rae-Youn (Dept. of Chemical Engineering, Seoul National University of Science and Technology) ;
  • Lee, Hyun-Pyo (Dept. of Chemical Engineering, Seoul National University of Science and Technology) ;
  • Lee, Jin-Hui (Dept. of Chemical Engineering, Seoul National University of Science and Technology)
  • 정래윤 (서울과학기술대학교 화학공학과) ;
  • 이현표 (서울과학기술대학교 화학공학과) ;
  • 이진휘 (서울과학기술대학교 화학공학과)
  • Received : 2010.10.05
  • Accepted : 2010.12.08
  • Published : 2010.12.31
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Abstract

Elution effect was studied by the reactions between Electric arc furnace(EAF)dust and conc. or dil. sulfuric acid for the purpose of recoverying of the useful metals afterwards. The methods of mixing with acids and EAF dust for the elutions were depend on the ratios of acid/EAF dust. Experimental results showed that increased the ratios of sulfuric acids, decreased the elution effects are on the Zn, Fe and Mn, and conc. sulfuric acid showed higher elution effects than dil. sulfuric acids for the all metals. But in case of Pb, dil. sulfuric acid showed higher elution effects than conc. sulfuric acids conversely. Furthermore, the reason of the extreamly low quantities of eluted Pb is caused by the low solubilities by sulfuric acids compared to the other metals, as the results of the insoluble Pb is removed by the process of filtering.

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References

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