Journal of the Korean Crystal Growth and Crystal Technology (한국결정성장학회지)

The Korea Association of Crystal Growth (한국결정성장학회)
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Effects of the incidence angels of solid particles on the erosion of castable refractories

캐스터블 내화물에 충돌하는 입자의 입사각도가 에로젼에 미치는 영향

  • Shin, Min (Department of Advanced Materials Science and Engineering, Dankook University) ;
  • Yoon, Jong-Won (Department of Advanced Materials Science and Engineering, Dankook University) ;
  • Kim, Chang-Sam (Center for Energy Convergence, Korea Institute of Science and Technology)
  • 신민 (단국대학교 신소재공학과) ;
  • 윤종원 (단국대학교 신소재공학과) ;
  • 김창삼 (한국과학기술연구원 에너지융합연구단)
  • Received : 2015.01.26
  • Accepted : 2015.02.06
  • Published : 2015.02.28
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Abstract

The degradation of refractories can be caused by erosion, friction of abrasive particles, as well as by corrosion by molten slag in the gasification reactors. There was little knowledge about the erosion of refractories so far. The castable refractories of which the maximum applying temperature of 1300 and $1500^{\circ}C$ were abraded using SiC particles varying the incidence angles. It was revealed that the maximum abrasion was occurred at the incidence angle of $60{\sim}75^{\circ}$ not at $90^{\circ}$ and thought that the porosity of the refractories was the principle factor.

내화물은 슬래그 등과의 화학반응뿐만 아니라 입자 충돌이나 마찰에 의한 물리적인 마모도 일어난다. 그러나 내화물의 에로젼에 의한 마모에 대해서는 거의 알려져 있지 않다. 본 실험에서는 내화도가 1300과 $1500^{\circ}C$인 캐스터블에 대해서 SiC 마모입자의 입사 각도에 따른 마모량의 변화를 분석하였다. 그 결과 최대 마모량을 나타내는 각도는 입자가 내화물에 수직으로 부딪힐 때가 아니라 $60{\sim}75^{\circ}$로 입사될 때인 것을 알았다. 또한 내화물의 기공률이 에로젼 마모에 가장 큰 영향을 미치는 것으로 생각되었다.

Keywords

References

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