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Received December 12, 2005
Accepted April 7, 2006
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연속식 탄산칼슘 결정화기에서 교반속도와 온도가 입도분포에 미치는 영향
Effect of RPM and Temperature on the CSD in the CMSMPR Calcium Carbonate Crystallizer
순천향대학교 화학공학과, 336-745 충남 아산시 신창면 읍내리 646
Department of Chemical Engineering, Soonchunhyang University, 646, Eupnae-ri, Shinchang-myun, Asan-si, Chungnam 336-745, Korea
jung820@sch.ac.kr
Korean Chemical Engineering Research, June 2006, 44(3), 289-293(5), NONE Epub 19 July 2006
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Abstract
탄산칼슘을 제조하는 연속식 결정화 공정에서 결정의 입도분포에 대한 온도와 교반속도 영향을 연구하였다. 연속식 조업에서 용액의 산도 변화는 적었다. 교반속도가 300 RPM 이하, 용액의 온도가 낮으면 탄산칼슘 결정의 부피 평균 크기는 안정하였고, 전자현미경 사진 관찰에서 calcite와 aragonite가 만들어졌음을 알 수 있었다.
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.
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