회분식 반응기에서의 공정변수 변화에 의한 침강성 탄산칼슘 제조

Preparation of colloidal calcium carbonate by change of experimental condition at batch reactor

  • 신보철 (강원대학교 화학공학과) ;
  • 한상오 (강원대학교 화학공학과) ;
  • 김주호 (강원대학교 화학공학과) ;
  • 송지훈 (강원대학교 화학공학과) ;
  • 송근호 (강원대학교 화학공학과) ;
  • 이광래 (강원대학교 화학공학과)
  • 발행 : 2001.12.31

초록

For the preparation of calcium carbonate particles from aqueous $Ca(OH)_2$ slurry, carbonation reaction of aqueous $Ca(OH)_2$ slurry was carried out by batch method the $CO_2$ into reactor filled with aqueous slurry of $Ca(OH)_2$. The concentration of $Ca(OH)_2$ varies from 1.00 to 7.00wt%, reactor temperature at 20 and $40^{\circ}C$, and reactor pressure from atmospheric pressure to $6.0kg_f/cm^2$. Crystal structure of calcium carbonate was of calcite, the particle size were about $0.05{\sim}2.0{\mu}m$, and the particle shape was cubic and spindle. When reactor temperature was higher, particle size of calcium carbonate was bigger and particle shape was varied, but reaction rate was increased. When reactor pressure was higher, particle size of calcium carbonate was smaller, particle shape was cubic, and reaction rate was increased.

키워드