Resources Recycling (자원리싸이클링)

The Korean Institute of Resources Recycling (한국자원리싸이클링학회)
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The Optimization of Hydrometallurgical Process for Recovery of Zinc from Electric Arc Furnace Dust (Part I : leaching process)

습식산화법을 이용한 제강분진 내 아연회수를 위한 최적조건 도출에 관한 연구(Part I; 침출공정)

  • Received : 2015.02.16
  • Accepted : 2015.05.27
  • Published : 2015.06.30
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Abstract

EAFD (Electric Arc Furnace Dust) is considered as pernicious pollutant, assigned hazardous waste. Since this dust is a by-product of industry, it contains valuable metals such as Fe, Zn, Ni, Cu which can be turned into resources by recycling process. In this study, hydrometallurgical process was applied to recover Zn from Electric Arc Furnace Dusts. The result showed 95% Zn recovery at 3M $H_2SO_4$, Solids/Liquid ratio 1:2 and aeration of 1.8L/min for 2hr. However there was 80% Zn recovery at lower $H_2SO_4$ concentration apply for pilot scale plant.

제강분진(Electric Arc Furnace Dusts)은 유해폐기물로 지정되어있는 유해한 환경오염물질이다. 이 분진은 철강산업의 부산물로써 철, 아연, 니켈, 구리 등 많은 유가금속을 포함하고 있어 적절한 처리를 거치면 폐기물이 아닌 자원으로 재활용이 가능하다. 본 연구에서는 국내 전기로에서 발생하는 제강분진을 대상으로 가장 높은 함유량을 가진 아연의 회수를 위한 최적조건을 도출하기 위해 습식침출법을 적용하였다. 분진과 황산의 고액비, 침출시간, $MnO_2$ 투입량 등의 조건을 종합하여 실험을 진행하여 최적 아연회수조건을 도출하였다. 황산농도 3 M, 고액비 1:2, 철 제거를 위한 폭기 1.8 L/min 강도로 2시간에서 95%의 아연 회수율이 관찰되었다. 그러나, 현장 적용의 현실성을 고려한 다른 최적의 조건은 저농도 황산과 $MnO_2$ 3.5 g을 투입했을 경우 약 80 %의 아연 회수율을 나타내었다.

Keywords

References

  1. Ailiang Chen, Zhong wei Zhao, Xijun Jia, Shuang Long, Guangsheng Huo, Xingyu Chen, 2009 : Alkaline leaching Zn and its concomitant metals from refractory hemimorphite zinc oxide ore, Hydrometallurgy, 97, pp. 228-232. https://doi.org/10.1016/j.hydromet.2009.01.005
  2. A. J. B. Dutra, P. R. P. Paiva, L.M. Tavares, 2006 : Alkaline leaching of from electric arc furnace steel dust, Minerals Engineering, 19, pp. 478-485. https://doi.org/10.1016/j.mineng.2005.08.013
  3. Yue Hou, Ahalapitiya H. Jayatissa, 2014 : Enhancement of gas sensor response of nanocrystalline zinc oxide for ammonia by plasma treatment, Applied Surface Science, 309, pp. 46-53. https://doi.org/10.1016/j.apsusc.2014.04.158
  4. M. K. Jha, V. Kumar, R. J. Singh, 2001 : Review of hydrometallurgical recovery of zinc from industrial wastes, Resurces Consercation & Recycling, 33, pp. 1-22. https://doi.org/10.1016/S0921-3449(00)00095-1
  5. Fenglian Fu, Qi Wang, 2001 : Removal of heavy metal ions from wastewaters: A review, Journal of Environmental Management, 92, pp. 407-418.
  6. Tomas Havlik, Bruna Vidor e Souza, Andrea Moura Bernardes, Ivo Andre Homorich Schneider, Anrea Miskufova, 2006 : Hydrometallurgical processing of carbon steel EAF dust, Journal of Hazardous Materials, 135, pp. 311-318. https://doi.org/10.1016/j.jhazmat.2005.11.067
  7. J. H. Hwang, C. H. Oh, C. T. Lee, 2000 : Selective extraction of Zn component from leachate of waste EAF dust using liquid membrane process, Journal of Korea Solid wastes Engineering society, 17(5), pp. 619-627.
  8. Yan Jie Liang, Li Yuan Chai, Hui Liu, Xiao Bo Min, Qaisar Mahmood, Hai Jing Zhang, Yong Ke, 2012 : Hydrothermal sulfidation of zinc-containing neutralization sludge for zinc recovery and stabilization, Minerals Engineering, 25, pp. 14-19. https://doi.org/10.1016/j.mineng.2011.09.014
  9. Tahir Sofilic, Alenka Rastovcan Mioc, Stefica Cerjan Stefanovic, Vjera Novosel Radovic, Monika Jenko, 2004 : Characterization of steel mill electric-arc furnace dust, Journal of Hazardous Materials, 109, pp. 59-70. https://doi.org/10.1016/j.jhazmat.2004.02.032
  10. J. M. An et al, 2010 : A study of Fe removal efficiency of acid mine drainage by physico-chemical treatment, Journal of Korean Society Mineral and Energy Resource Engineers, 47(4), pp.530-538.
  11. J. K. Yoo et al, 1995 : Chlorination of Zinc sulfide with Ammonium Chloride, J. Ind. Eng. Chem, 6(2), pp.250-259.
  12. C. S. Ju et al, 1998 : Selective Leaching of Zinc from zinc oxide waste and preparation of zinc oxide, Journal of Environmental Science International, 7(3), pp.401-407.
  13. C. H. Yoon, 2013 : Reduction process technology research for the recovery crude ZnO from the EAF-dust, Changwon National University.
  14. R. Y. Jeong, Jin Hui Lee, 2011 : A study on the manufacture of the ZnO by the wet method from the EAF dust, Journal of the korean Oil Chemists, 28(2), pp251-257.
  15. R. Y. Jeong, 2010 : The study on the recovery process of zinc metal from EAF Dust by chemical treatment, Seoul national university of science and technology.
  16. M. S. Lee, Eung Cho Lee, 2000 : A Thermodynamic Model on the solvent extraction of Zinc with D2EHPA from sulfuric Acid solutions, Korean Journal of Metals and Materials, 38(7), pp. 946-950.
  17. P. Dvorak, J. Jandova, 2005 : Hydrometallurgical recovery of zinc from hot dip galvanizing ash, Hydrometallurgy, 77, pp. 29-33. https://doi.org/10.1016/j.hydromet.2004.10.007
  18. I. M. Ahmed, A. A. Nayl, J. A. Daoud, 2012 : Leaching and recovery of zinc and copper from brass slag by sulfuric acid, Journal of saudi chemical society.
  19. A. Herndez et al., 2003 : Study of the presence of flourine in the recycled fractions during carbothemal treatment of EAF dust, Waste Managment, 23, 483-491 https://doi.org/10.1016/S0956-053X(02)00151-4