Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
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Carbonation of Circulating Fluidized Bed Boiler Fly Ash Using Carbonate Liquids

  • Lee, Woong-Geol (Department of Advanced Materials Engineering, Kangwon National University) ;
  • Kim, Jin-Eung (R&D Center Team, Intchem Co., Ltd.) ;
  • Jeon, Se-Hoon (Department of Advanced Materials Engineering, Kangwon National University) ;
  • Song, Myong-Shin (Research Center of Advanced Convergence Processing on Materials, Kangwon National University)
  • Received : 2017.04.13
  • Accepted : 2017.07.09
  • Published : 2017.09.30
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Abstract

In this study, unstable CaO was converted into a stable Ca compound by using carbonation in a circulating fluidized bed boiler of fly ash to confirm material usability as cement admixture; also undertaken was carbonation test and mortar to examine chemical and physical change by measuring absorption rate and compressive strength. To investigate the chemical properties of circulating fluidized bed boiler fly ash, XRD and TG-DTA were used to determine how the properties of the reaction product change quantitatively during carbonation. In order to stabilize CaO, carbonation of CaO is considered to be the most desirable process. This is because $CaCO_3$, which is a Ca compound, was produced by carbonate reaction of unstable CaO, and decrease of the absorption rate and improvement of the compressive strength were observed when the carbonated fly ash was replaced with cement.

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References

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Cited by

  1. Carbonation of Circulating Fluidized Bed Combustion Fly Ash with Hybrid Reaction vol.55, pp.2, 2018, https://doi.org/10.4191/kcers.2018.55.2.07