Synthesis of Ultrafine Calcium Carbonate powders by nozzle Spouting Method

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J. Korean Ceram. Soc. > Volume 33(11); 1996 > Article

Journal of the Korean Ceramic Society 1996;33(11): 1276.

분사법에 의한 초미립 경질 탄산 칼슘 분말의 합성

안지환, 박찬훈¹, 김정효², 이종국³, 김환²

한국자원연구소 자원활용소재연구부
¹인하대학교 자원공학과
²서울대학교 재료공학과
³조선대학교 재료공학과

Synthesis of Ultrafine Calcium Carbonate powders by nozzle Spouting Method

ABSTRACT

Ultrafine calcim carbonate powders with the size of 0.05~0.1 ${mu}{textrm}{m}$ and the calcite phase were prepared by the nozzle spouting method which was conducted by spouting calcium hydroxide slurry in reactor filled with CO2 gas. Well dispersed ultra-fine particles were synthesized in condition of high Ca(OH)2 concentration of the slurry ( 0.5wt%) synthesized calcium carbonate powder was shown the large particle size with agglo-meration.

Key words: Calcium carbonate powder, Nozzle spouting method, Ultrafine powder, pH of suspension, Calcium ion concentration