Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
권호 표지
DOI QR코드

DOI QR Code

Effects of Additives and Sintering Method on the Properties of Light Aggregate Prepared from EAF Dust/Clay

첨가제와 소결방법이 EFA Dust/점토 소결체의 경량화에 미치는 영향

  • Published : 2003.03.01
Download PDF
⟨ Previous 4-Al2TiO5 Ceramics Induced by Thermal Expansion Anisotropy"" href="/article/JAKO200311921591627.page?lang=en"> Next ⟩

Abstract

EAF(Electric Arc Furnace) Dust classified as special wastes containing heavy metal contaminants may cause to damage an environment such as underground water contamination if they were not treated properly. The possibility of producing the porous sintered body made from EAF Dust/clay composition system was studied. Mixing of EAF Dust and clay was carried out using wet-mixing process and two different sintering methods such as rapid and normal heat treatment were tried. By observing density, porosity and microstructure of sintered bodies, it was found that the bloating phenomenon depend on the contents of C, where the liquid phase occur or not during the sintering process. To obtain a light-aggregate of porous body due to bloating, the rapid heating was better than the normal heating at sintering process.

지정폐기물인 EAF(Electric Arc Furnace) Dust는 현재 대부분이 매립 등 부적절하게 처리되고 있어 지하수 오염 등의 환경 파괴를 일으킬 위험이 있다. EAF Dust의 자원화를 위하여 EAF Dust/점토 조성으로 세라믹 다공체의 제조 가능성을 연구하였다. 출발 원료들의 혼합은 습식 공정으로 행하였으며, 소결 방법은 급속 소결과 일반 소결을 각각 적용하였다. 소결된 시편의 비중, 기공 및 미세구조를 관찰한 결과. 시편내의 발포현상은 탄소(C)의 양과 액상 생성의 유무에 의해 결정됨이 밝혀졌다. 발포를 용이하게 발생시켜 다공체의 경량골재를 얻기 위해서는 소결 시 급열처리하는 것이 유리하였다.

Keywords

References

  1. 2000 the Whole Country Wasters Product & Treatment Present. 11-1480000000533-10 Ministry of Enviromnent
  2. J. Kor. Solid Wastes Eng. Soc. v.14 no.3 Effect of Cement of Fixation of the Hazardous Heavy Metals Contained in the EAF Dust for Landfill M.H.Ahn; N.W.Lim;K.A.Lee
  3. J. Kor. Solid Wastes Eng. Soc. v.13 no.1 Leaching of Valuable Metal and Separation of Zn Component from the Solid Waste EAF Dust J.S.Hwang;C.H.Oh;C.T.Lee
  4. J. Kor. Solid Wasters Eng. Soc. v.13 no.1 Investigation of Recycling of Industrial Wastes Dust for Mineral Filler of Aspalt Concrete -Physical Properties of Civil Appraise- N.W.Lim;Y.G.Kim
  5. J. Kor. Solid Wastes Eng. Soc v.14 no.8 Hydration Properties and Solidification of Hazardous Wastes Containing Heavy Metals Using Cementitious Binding Materials C.K.Park;Y.H.Shin;K.H.Cho
  6. J. Kor. Solid Wastes Eng. Soc. v.16 no.5 Development of Solidifing Agent for Reuse of EAF Dust and Plating Sludge S.K.Lee;D.K.Lee;D.J.Lee;J.Y.Park;S.M.Lee
  7. U. S Patent, 567146 EAF Dust Treatment J.Aota
  8. U.S Patent, 5278111 Electric Arc Furnace Dust as Raw Material for Brick S.W.Frame
  9. J. Miner. Soc. Kor. v.3 no.1 Law Material of Lightweight Aggregates Y.B.Chae
  10. Ceram. Inter. v.26 Utilzation of Bauxite Waste in Ceramic Glazes N.Yalcin;V.Sevinc https://doi.org/10.1016/S0272-8842(99)00083-8
  11. J. of Harzadous Mater. v.59 The Characteristics Study on Sintering of Municipal Solid Waste Incinerator Ashes K.S.Wang;K.Y.Chiang;J.K.Perng;C.J.Sun https://doi.org/10.1016/S0304-3894(97)00147-7
  12. Introduction to Ceramics v.59 W.D.Kingery;H.K.Browen;D.R.Uhlmann
  13. J. of the Kor. Ind. and Eng. Chem. v.8 Studies on the Fusibility of Fly Ash-flux Mixtures H.S.Yang;K.C.Lee;C.S.Park

Cited by

  1. Water absorption characteristics of artificial lightweight aggregates preparedby pre-wetting vol.21, pp.2, 2011, https://doi.org/10.6111/JKCGCT.2011.21.2.082
  2. Effect of EAF dust on the formation of ultra lightweight aggregates by using bottom ash and dredged soil from coal power plant vol.21, pp.3, 2011, https://doi.org/10.6111/JKCGCT.2011.21.3.129