한국세라믹학회지 (Journal of the Korean Ceramic Society)

  • 제39권6호
  • /
  • Pages.528-534
  • /
  • 2002
  • /
  • 1229-7801(pISSN)
  • /
  • 2234-0491(eISSN)
한국세라믹학회 (The Korean Ceramic Society)
권호 표지
DOI QR코드

DOI QR Code

Effeet of Al2O3, MgO and SiO2 on Sintering and Hydration Behaviors of CaO Ceramics

  • Kim, Do-Kyung (Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology) ;
  • Cho, Churl-Hee (Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology) ;
  • Goo, Bong-Jin (Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology) ;
  • Lee, Kee-Sung (Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology)
  • 발행 : 2002.06.01
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

CaO ceramics were prepared by conventional sintering process and their hydration behaviors were evaluated by measuring weight increment on saturated water vapor pressure at ambient temperature. CaCO$_3$ and limestone were used as CaO source materials and $Al_2$O$_3$, MgO and SiO$_2$ were added as sintering agents. $Al_2$O$_3$ was a liquid phase sintering agent to increase densification and grain growth rates, whereas MgO and SiO$_2$, densification and grain growth inhibitors. Regardless of composition, all of the prepared CaO ceramics showed the improved hydration resistance as bulk density increased. Especially, when bulk density was more than 3.0 g/㎤, there was no weight increment after 120 h of hydration. Therefore, to decrease contact area between CaO and water vapor by increasing bulk density with the $Al_2$O$_3$ sintering additive was effective for the improvement of CaO hydration resistance.

키워드

참고문헌

  1. J. Am. Ceram. Soc. v.53 no.8 CaO: I. Fabrication and Characterization R. W. Rice
  2. US Patent, 3026211 Calcium Oxide Refractory and Process of Producing the Same I. B. Cutler
  3. J. Am. Ceram. Soc. v.64 no.2 Vapor Phase Hydration of Submicrometer CaO Particles D. Beruto;L. Barco;G. Belleri;A. W. Searcy https://doi.org/10.1111/j.1151-2916.1981.tb09579.x
  4. J. Am. Ceram. Soc. v.63 no.7-8 Characterization of the Porous CaO Particles Formed by Decomposition of CaCO₃and Ca(OH)₂in Vacuum D. Beruto;L. Barco;A.W. Searcy;G. Spinolo https://doi.org/10.1111/j.1151-2916.1980.tb10208.x
  5. J. Am. Ceram. Soc. v.62 no.11-12 The Nature of CaO Produced by Calcite Powder Decomposition in Vacuum and in CO₂ J. Ewing;D. Beruto;A. W. Searcy https://doi.org/10.1111/j.1151-2916.1979.tb12736.x
  6. Taikabutsu Overseas v.11 no.3 CaO Clinker with Improved Anti-hydration Property F. Kawano;I. Yamoto;J. Nomura;J. Yoshitomi;A. Ikesue;H. Shikano
  7. Ceram. Bull. v.49 no.5 Increasing Hydration Resistance of Calcia I. B. Cutler;R. L. Felix;L. P. Caywood, Jr.
  8. A Study on the Effect of the Surface Carbonation on the Hydration of CaO H. S. Song
  9. J. Am. Ceram. Soc. v.67 no.6 Reactive-phase Calsintering of Calcium-carbonate-derived Lime Y.Y. Shi;G.L. Messing;R. C. Bradt
  10. J. Am. Ceram. Soc. v.78 no.6 Lime Refractories with Limestone and Synthetic Calcium Hydroxide Additions L. L. Wong;R. C. Bradt https://doi.org/10.1111/j.1151-2916.1995.tb08859.x
  11. British Ceramic Transactions v.93 no.4 Improvements in Hydration Resistance of CaO Clinkers L. Xintian;H. Tiecui
  12. US Patent, 4383044 Slaking-resistant Calcia Refractory Nagayama;Hiroshi
  13. Ceram. Bull. v.50 no.6 A Lime Refractory for High Temperature Use J. T. Benson;O. J. Whittemore, Jr.
  14. Ceram. Bull. v.48 no.6 Some Properties of Lime Refractories D. H. Hubble
  15. Ceram. Bull v.49 no.2 Preparation of Lime Specimens with Closely Controlled Properties W. J. Schlitt;G.W. Healy
  16. J. Kor. Ceram. Soc. v.32 no.5 Densification and Enhancement of the Hydration Resistance of CaO with Aluminum(in Kor.) Y. G. Lee;C. G. Lee;B. S. Jun
  17. J. Am. Ceram. Soc. v.52 no.8 CaO: Ⅱ. Properties R. W. Rice https://doi.org/10.1111/j.1151-2916.1969.tb11973.x
  18. Ceram. Bull. v.43 no.1 Fabrication of High Density Calcium Oxide Ceramics M. A. Hepworth;J. Rutherford
  19. CRC Handbook of Chemistry and Physics D. R. Lide