The Webb Law Firm
Method of producing calcite capable of controlling a grain size thereof
Provided is a method of synthesizing high-purity calcite capable of controlling a grain size thereof, by reacting an aqueous calcium chloride solution with CO2 gas under strong alkaline condition, to crystallize into white and ultra-fine grain calcite. The method of synthesizing fine-grain calcite according to the present disclosure can decrease super-saturation by producing calcite under the strong alkaline conditions, thereby suppressing generation and growth of grain, resulting in controlling the grain size. Therefore, the above method is useful in producing high-purity ultra-fine grain calcite and can control the grain size of calcite from several hundreds of nanometers to several tens of nanometers by regulating the concentration of an aqueous caustic soda solution.
Korea Institute of Geoscience and Mineral Resources
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Seung Woo Kyung Sun Jun Hwan Soo Chun Young Nam Myung Gyu Kyoung Won
Lee Song Bang Chae Jang Lee Ryu