| 摘要 |
PURPOSE: A water-soluble calcium carbonate is provided to effectively employ it invarious applications including pharmaceuticalor cosmetic materials, food and/or health foods by forming ultrafine granules thereof and surface-coating them. CONSTITUTION: The calcium carbonate is produced by the following steps of preparing Ca(OH)2 solution by calcinating calcium material and coal to obtain CaO then adding water to slake the obtained CaO; introducing CO2 to the solution to generate CaCO3 by chemical reaction; controlling particle size of the obtained calcium carbonate material; coating the respective particles with desired coating agent to protect the particles from agglomeration together; concentrating the coated particles into a liquid material; and drying and grinding the concentrated material into a powdery product. The calcium material includes at least one of lime, marble, aragonite, white rock, calcite, iceland spar, coral, shells, bone and/or eggshells. The particle size is ranged from 0.0001-10 micrometer.
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