Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
권호 표지
DOI QR코드

DOI QR Code

Synthesis of Precipitated Calcium carbonate in Ca(OH)2-CO2-H2O System by the Continuous Drop Method of Ca(OH)2 Slurry

  • Ahn, Ji-Whan (Korea Institute of Geoscience & Mineral Resources) ;
  • Lee, Jae-Sung (Department of Chemical Engineering,Kwangwoon University) ;
  • Joo, Sung-Min (Korea Institute of Geoscience & Mineral Resources) ;
  • Kim, Hyung-Seok (Korea Institute of Geoscience & Mineral Resources) ;
  • Kim, Jong-Kuk (Institute of Basic Science, Changwon National University) ;
  • Han, Choon (Department of Chemical Engineering,Kwangwoon University) ;
  • Kim, Hwan (School of Materials Science and Engineering, Seoul National University)
  • Published : 2002.01.01
Download PDF
⟨ Previous Next ⟩

Abstract

Experiments were conducted to investigate the synthesis characteristics of Precipitated Calcium Carbonate(for short PCC) in Ca(OH)$_2-CO_2-H_2O$ system by the continuous drop method of Ca(OH)$_2$ slurry into the solution containing $CO_2$(aq). When the flow rate of $CO_2$(g) increases and the concentration of Ca(OH)$_2$ slurry become low, the absorption rate of $CO_2$(g) become faster than the dissolution rate of Ca(OH)$_2$. Consequently, the growth of the calcite crystal plane is facilitated resulting in synthesis of $1.0{\mu}m$ of rhombohedral calcite. On the other hand, when the flow rate of $CO_2$(g) decreases and the concentration of Ca(OH)$_2-CO_2-H_2O$ slurry become high, new nuclei is created along with the crystal growth resulting in synthesis of $0.1{\mu}m$ of prismatic calcite. Maintaining 1.0wt% of Ca(OH)$_2-CO_2-H_2O$ slurry, 120 drops/min of drop rate and $25^{circ}C$ of temperature, the shape of PCC shows colloidal and spherical agglomerate at 100 mL/min of the flow rate of $CO_2$(g); the mixture of rhombohedral and plate-shaped calcite, at 200∼500 mL/min. Therefore, as the flow rate of $CO_2$(g) increases, the shape of PCC changes from colloidal and rhombohedral calcite to plate-shaped calcite. Maintaining 500 mL/min of the flow rate of $CO_2$(g), 120 drops/min of the drop rate of Ca(OH)$_2$ slurry, and $25^{circ}C$ of temperature, the shape of PCC shows the plate-shaped calcite at 1.0∼3.0 wt% of Ca(OH)$_2$ slurry; the hexagonal plate-shape calcite of the thickness of $0.1{\mu}m$ and the width of $1.0{\mu}m$, at 4.0 wt%.

Keywords

References

  1. S. Yamashita, 'Active Calcium Carboantes for Reinforcing Synthetic Rubber,' Gypsum & Lime, 94 132-43 (1968)
  2. H. Tanaka, 'Application of Carbonate as a Pigment for Coated Paper,' Gypsum & Lime, 227 229-36 (1990)
  3. E. Dalas, J. Kallitsis and P. G. Koutsoukos, 'The Crystalli-zation of Calcium Carbonate on Polymeric Substrates,' J. Crystal Growth, 89 287-94 (1988) https://doi.org/10.1016/0022-0248(88)90412-5
  4. Y. Kojima, A. Sadotomo, T. Yasue and Y. Arai, 'Control of Crystal Shape and Modification of Calcium Carbonate Pre-pared by Precipitation from Calcium Hydrogen Carbon-ation Solution,' J. Ceram. Soc. Jpn., 100 1145-53 (1992) https://doi.org/10.2109/jcersj.100.1145
  5. J-K. Oh, H-Y. Lee and S-G. Kim, 'Precipitated Calcium Carbonate,' Chemical Industry and Technology, 12 6-9 (1994)
  6. G. E. Hall and J. Wyandotte, 'Production of Precipitated Calcium Carbonate,' U.S. Pat. 2, 964, 382 (1960)
  7. H. R. Rafton and A. M. Brooks, 'Colloidal Calcium Carbon-ate,' U.S. Pat. 2, 058, 503 (1936)
  8. S-G. Lee, M-C. Kim, W-S. Kim and C. K. Choi, 'Model for Mathematical Analysis of Gas-liquid Reaction Crystalliza-tion of Calcium Carbonate in Couette-taylor Reactor,' J. Korean Institute of Chemical Engineers, 36 [1] 42-8 (1998)
  9. D-S. Yoo, S-W. Kang and K-R. Lee, 'Carbonate of Lime Milk in a Semi-batch Precipitative Crystallizer,' J. of the Kor. Institute of Mineral and Energy Resources Eng., 34 60-73 (1997)
  10. Y-J. Song and C-H. Park, 'Controls of Forming Particle Size and Crystal Shape of Precipitated Calcium Carbon-ate,' J. of the Kor. Institute of MineraI and Energy Resources Eng., 34 38-54 (1997)
  11. H. Tanaka, H. Horiuchi and T. Ohkubo, 'Synthesis of Whisker like Aragonite Ca$CO_3$,' Gypsum & Lime, 216 60-7 (1988)
  12. C. R. Barrett, W. D. Nix and A. S. Tetelman, 'The Princi-pIes of Engineering Material,' Prentice-hall, Inc., 163 (1973)
  13. Y. Qiu and A. C. Rasmuson, 'Crystal Growth Rate Parame-ter from Isothermal Desupersaturation Experiments,' Chemical Eng. Sci., 46 [7] 1659-67 (1991) https://doi.org/10.1016/0009-2509(91)87013-3
  14. H. Yamada and N. Hara, 'Transformation of Amorphous Ca$CO_3$ in the System of Ca$(OH)_2$-$H_2$O-$CO_2$<' Gypsum &Lime, 203 25-32 (1986)
  15. H. Yamada and N. Hara, 'Synthesis of Basic Ca$CO_3$ from the Reaction of the System Ca$(OH)_2$-$H_2$O-$CO_2$,' Gypsum & Lime, 196 12-22 (1985)
  16. H. Yamada and N. Hara, 'Formation Process of Colloidal Calcium Carbonate in the Reaction of the System Ca$(OH)_2$-$H_2$O-$CO_2$,' Gypsum & Lime, 194 3-12 (1995)
  17. V. A. Juvekar and M. M. Sharma, 'Absorption of $CO_2$ in a Suspension of Lime,' Chem. Eng. Sci., 28 825-27 (1973) https://doi.org/10.1016/0009-2509(77)80017-1
  18. T. Nishino and H. Tanaka, 'Dissolution Process of Basic Calcium Carbonate in an Aqueous Suspension Containing lon Exchange Resin,' Gypsum & Lime, 221 15-20 (1989)

Cited by

  1. Environmental Remediation and Conversion of Carbon Dioxide (CO2) into Useful Green Products by Accelerated Carbonation Technology vol.7, pp.1, 2010, https://doi.org/10.3390/ijerph7010203
  2. Development of Self-Repairing Smart Concrete Using Micro-Biologically Induced Calcite Precipitation vol.22, pp.4, 2010, https://doi.org/10.4334/JKCI.2010.22.4.547