Resources Recycling (자원리싸이클링)

The Korean Institute of Resources Recycling (한국자원리싸이클링학회)
권호 표지

Synthesizing Behavior of Calcium Chloroaluminate with using MSWI Fly Ash in the Different Sintering Conditions

생활폐기물(生活廢棄物) 소각(燒却) 비산(飛散)재의 소성(燒成) 조건(條件)에 따른 Calcium Chloroaluminate 합성(合成) 거동(擧動)에 관한 연구(硏究)

  • Yoo, Kwang-Suk (Korea Institute of Geoscience and Mineral Resources) ;
  • Lee, Seong-Ho (Korea Institute of Geoscience and Mineral Resources) ;
  • Hwang, Sun-Ho (Korea Institute of Geoscience and Mineral Resources) ;
  • Ahn, Ji-Whan (Korea Institute of Geoscience and Mineral Resources)
  • Received : 2010.08.02
  • Accepted : 2010.10.14
  • Published : 2010.10.30
Download PDF
⟨ Previous Next ⟩

Abstract

The aim of this study is to investigate the behaviors of synthesis of Calcium Chloroaluminte($11CaO{\cdot}7Al_2O_3{\cdot}CaCl_2$) under the melting temperature of municipal solid waste incineration fly ash(MSWI fly ash); $900^{\circ}C-1300^{\circ}C$ of sintering temperature. A sludge generated from a water purification plant (SW) was also used to fill up $Al_2O_3$ source, which might be deficient in MSWI fly ash. MF and SW were mixed at mixing ratio of 10 to 7, which is the mole ratio of CaO to $Al_2O_3$ of calcium Chloroaluminte. Mixed samples were sintered in the opened sintering reactor and the closed sintering reactor, respectively. The results showed that calcium chloroaluminte was formed at $1,000^{\circ}C$ in both reactors, but the temperature of decomposition of calcium chloroaluminte depended upon sintering reactor type; an opened sintering reactor and a closed sintering reactor, owing to the vaporization velocity of Cl.

본 연구에서는 생활폐기물 소각 비산재를 활용하여 유리화 온도보다 낮은 소결 온도에서 calcium chloroaluminte($11CaO{\cdot}7Al_2O_3{\cdot}CaCl_2$, 본문에서는 CCA로 표기)의 시멘트 광물을 합성하였다. CCA를 합성 시 $Al_2O_3$ 성분 부족한 양은 정수 슬러지를 부 원료로 첨가하였다. 생활폐기물 소각 비산재의 CaO 성분과 정수 슬러지를 10:7로 혼합하여 $900^{\circ}C-1300^{\circ}C$ 소결 온도에 따른 CCA 합성 거동을 관찰하였다. 혼합 시료는 개방형(Opened System) 소결 조건 전기로와 밀폐형(Closed System) 소결 조건 전기로에서 온도에 따른 CCA 합성 거동을 관찰한 결과, CCA 합성은 개방형과 밀폐형 모두 $1,000^{\circ}C$에서 합성이 되었다. 그러나 소성 분위기로 볼 때 개방형보다는 밀폐형의 소성 조건에서 CCA의 합성율이 높았으며, 이는 소각재 소성 과정에서 Cl의 휘발 거동에 따라 CCA의 합성율 및 분해 온도가 결정되는 것으로 나타났다.

Keywords

References

  1. 환경부: "2007 전국 폐기물 발생 및 처리현황"(2008).
  2. 국립환경과학원.한국환경자원공사, 2007 전국 폐기물 발생 및 처리현황, 2008.
  3. Zhang, F., Yamasaki, S., Nanzyo M., 2001 : Application of waste ashes to agricultural land-effect of incineration temperature on chemical characteristics, Sci. Total. Environ 264(3), pp 205-214. https://doi.org/10.1016/S0048-9697(00)00715-4
  4. Hui-sheng S., Li-li K., 2009: Characteristics of municipal solid wastes incineration (MSWI) fly ash-cement matrices and effect of mineral admixtures on composite system, Construction and Building Materials, 23(5), pp 2160-2166. https://doi.org/10.1016/j.conbuildmat.2008.12.016
  5. Wang K. S., Chiang K. Y., Perng J. K., Sun C. J., 1998: The characteristics study on sintering of municipal solid waste incinerator ashes, J. Hazard. Mater., 59(2-3) pp 201-210. https://doi.org/10.1016/S0304-3894(97)00147-7
  6. J. Pera, L, Coutaz, J. Ambrosie, M Chababbet, 1997: Use of incinerator bottom ash in concrete, Cement and Concrete Research 27 (No. 1) 1-5. https://doi.org/10.1016/S0008-8846(96)00193-7
  7. Wang K. S., Chiang K. Y., Perng J. K., Sun C. J., 1998: The characteristics study on sintering of municipal solid waste incinerator ashes, J. Hazard. Mater., 59(2-3) pp 201-210. https://doi.org/10.1016/S0304-3894(97)00147-7
  8. Sakai, S., Hiraoka, M., 2000: Municipal solid waste incinerator residue recycling by thermal process.i, Waste Manage 20(2-3), pp 249-258. https://doi.org/10.1016/S0956-053X(99)00315-3
  9. Mangialardi T., 2001 : Sintering of MSW fly ash for reuse as a concrete aggregate, J. Hazard. Mater., 87(1-3), pp 225- 239. https://doi.org/10.1016/S0304-3894(01)00286-2
  10. Cheng T. W., Ueng T. H., Chen Y. S., Chiu J. P., 2002 : Production of glass-ceramic from incinerator fly ash, Ceram. Int., 28(7), pp 779-783. https://doi.org/10.1016/S0272-8842(02)00043-3
  11. 유광석, 안지환, 한동윤, 조계홍, 오명환, 2009: 'Alinite계 클링커 제조 시 MgO의 영향' J of Korea Inst. of Resources Recycling, Vol.18, No. 3, pp 49-54.
  12. Inam Jawed and Jan Skalny, 1977: Alkalines in Cement: A Review, Vol 7, pp. 719-730. https://doi.org/10.1016/0008-8846(77)90056-4
  13. Yansheg Liu, Liting Zhegn, Xiaodong Li, Shaodong Xie, XEM/EDS and XRD characterization of raw and wasted MSWI fly ash sintered at different temperatures, J. of Harazadous Materials 162(2009), pp 161-173. https://doi.org/10.1016/j.jhazmat.2008.05.029