Korean Journal of Materials Research (한국재료학회지)

Materials Research Society of Korea (한국재료학회)
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The Properties of Permeability and Ash-Removal of Sintered Fail Safety Filter of Dust Collector in High Temperature

고온 집진용 Fail Safety 소결 필터의 통기도와 분진제거 특성

  • Bae S-Y (Division of Materials Science & Engineering, and ERI, Gyeongsang National University) ;
  • Ahn I-S (Division of Materials Science & Engineering, and ERI, Gyeongsang National University) ;
  • Jung W-H (Division of Materials Science & Engineering, and ERI, Gyeongsang National University) ;
  • Choi J-H (Division of Chemical & Engineering, and ERI, Gyeongsang National University)
  • 배승열 (경상대학교 재료공학부 및 공학연구원) ;
  • 안인섭 (경상대학교 재료공학부 및 공학연구원) ;
  • 정우현 (경상대학교 재료공학부 및 공학연구원) ;
  • 최주홍 (경상대학교 응용화학공학부)
  • Published : 2004.07.01
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Abstract

The fail safety filter is an assistant filter element to be mounted in order to intercept the particles leaked when the main filter elements are broken. So it should have two contrary functions of being plugged easily to meet the purpose of dust sealing and a high permeability to save the space. The permeability of the metal filter elements were effectively controlled by the following factor: powder size(53-840 ${\mu}m$) and applied pressure(1000-2000 $kgf/cm^2$), and then the compact were sintered for 1 hour at $1200^{\circ}C$ in vacuum sintering furnace. The sintered metal filters was evaluated for the function of the fail safety filter in an experimental unit. The maximum allowable particle size was 420-840 ${\mu}m$, when a CIP pressure of 1500 $kgf/cm^2$ was applied reveals a permeability of about $1.2{\times}10^{10}m^2$ and pore size of about 60 ${\mu}m$. The metal filter produced with stainless steel powder of 480-840 ${\mu}m$ size, which presented excellent permeability than commercial ceramic filter element and plugged with in 3 minutes with the leak of the maximum particle size less than 3 ${\mu}m$.

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