Korean Chemical Engineering Research

The Korean Institute of Chemical Engineers (한국화학공학회)
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Effect of RPM and Temperature on the CSD in the CMSMPR Calcium Carbonate Crystallizer

연속식 탄산칼슘 결정화기에서 교반속도와 온도가 입도분포에 미치는 영향

  • Han, Hyun Kak (Department of Chemical Engineering, Soonchunhyang University) ;
  • Jeong, Ok Hee (Department of Chemical Engineering, Soonchunhyang University) ;
  • Lim, Mi Hee (Department of Chemical Engineering, Soonchunhyang University) ;
  • Kim, Jin A (Department of Chemical Engineering, Soonchunhyang University)
  • 한현각 (순천향대학교 화학공학과) ;
  • 정옥희 (순천향대학교 화학공학과) ;
  • 임미희 (순천향대학교 화학공학과) ;
  • 김진아 (순천향대학교 화학공학과)
  • Received : 2005.12.12
  • Accepted : 2006.04.07
  • Published : 2006.06.30
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Abstract

In the CMSMPR (continuous mixed suspension mixed product removal)system, the effect of temperature and RPM on the CSD (crystal size distribution) in the calcium carbonate process was investigated. In the steady state operation, the change of solution pH was small. At the low temperature and below 300 RPM, volume mean size change of calcium carbonate was stable and CSD was narrow. In the SEM view, calcite and aragonite was obtained.

탄산칼슘을 제조하는 연속식 결정화 공정에서 결정의 입도분포에 대한 온도와 교반속도 영향을 연구하였다. 연속식조업에서 용액의 산도 변화는 적었다. 교반속도가 300 RPM 이하, 용액의 온도가 낮으면 탄산칼슘 결정의 부피 평균크기는 안정하였고, 전자현미경 사진 관찰에서 calcite와 aragonite가 만들어졌음을 알 수 있었다

Keywords

Acknowledgement

Supported by : 순천향대학교

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