Study of Operational Conditions for the Precipitated Calcium Carbonate Production

Eliane Cristina Silva Souto; João Jorge Ribeiro Damasceno; Carla Eponina Hori

doi:10.4028/www.scientific.net/MSF.591-593.526

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Processing and Microstructural Characterization of Porous Alumina-Zirconia Ceramic Using CMC and PVC
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YZrO₂-Ni Cermet Processing by High Energy Milling
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Developing of Ceramic Roof Tiles Process by Powder Pressing and Firing in Roller Kiln
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Study of Operational Conditions for the Precipitated Calcium Carbonate Production
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Thermal and Physico-Mechanical Characterization of Paraíba’s State Soils to Applying in Soil-Cement Bricks
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Evaluation of Silicon Nitride Ceramic Cutting Tools with Diamond Coatings
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Silicon Carbide Whiskers Interference on Silicon Nitride Based Composite
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Powder Diffraction of Components Subject to Corrosion in Fuse Cutouts with Ceramic Insulation
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Study of Operational Conditions for the Precipitated Calcium Carbonate Production

Abstract:

Calcium carbonate (CaCO3) is a natural occurring mineral or it can be produced by chemical means. This last product is often referred to as Precipitated Calcium Carbonate (PCC). PCC has various advantanges since it exhibits higher brightness and opacity. There can be considerable variation in the properties of the PCC depending upon the process conditions used to prepare it. In this work, the effect of different factors on the particle size of PCC has been investigated. The experiments were performed by bubbling CO2 in slaked lime suspensions. The pH of the lime slurry was 12 or higher at the beginning, but it decreased, down to an equilibrium pH of 8± 1, when the reaction was considered complete.