산화칼슘의 저온수화에 의한 고농도의 수산화칼슘 현탁액으로부터 입방형 탄산칼슘 입자의 제조

강윤찬; 박승빈

HWAHAK KONGHAK, Vol.35, No.6, 846-849, December, 1997

Preparation of Cubic-type Calcium Carbonate Particles from High Concentration Calcium Hydroxide Suspension by Controlling Hydration Temperature of Calcium Oxide

강윤찬, 박승빈

초록

탄산가스화법에 의한 탄산칼슘 입자 제조 공정에 있어서, 산화칼슘의 수화공정에서 수화온도를 낮추어주어 고농도의 수산화칼슘 현탁액으로부터 입방형 탄산칼슘 입자를 제조하였다. 산화칼슘의 수화온도를 조절하지 않은 경우에는 수산화칼슘 기준으로 물 1리터당 50g 이상의 농도에서 방추형의 입자들이 제조되었으나, 저온수화공정을 도입한 경우에는 물 1리터당 150g의 고농도에서 입방형 입자들이 제조되었다. 수화온도를 30℃ 이하로 유지시킨 경우에 저온수화 효과가 나타나 고농도에서도 입방형 탄산칼슘 입자들이 제조되었다. 저온수화공정을 도입한 경우에 현탁액의 농도가 증가함에 따라 입방형 입자의 크기가 증가하였다.

Cubic-type calcium carbonate particles from high concentration suspensions of calcium hydroxide by introducing low temperature hydration process of calcium oxide. Spindle-type calcium carbonate particles were obtained at higher concentrations than 50g/l from the calcium hydroxide suspension obtained at high temperature hydration. From the calcium hydroxide suspension obtained at low hydration temperature, however, cubic-type calcium carbonate particles were prepared even at high concentration of 150g/l of calcium hydroxide. The maximum temperature for the formation of cubic-type calcium carbonate particles from high suspension concentrations was 30℃. The mean size of cubic-type calcium carbonate particles increased with increasing the suspension concentration when the hydration temperature was low.

Keywords:Calcium Carbonate;Carbonation Process;Cubic-type;Morphology Control

[References]

Lee SS, "Manufacture and Utilization Technology of the Precipitated Calcium Carbonate," 1st ed., Korea Institute of Geology, Mining & Materials, Taejon, Korea (1996)
Strutz MD, Pflieger JC, Duncan PA, Pulp Paper Can., 92(8), 39 (1991)
Oh JG, Lee HY, Kim SG, Chem. Ind. Technol., 12(1), 4 (1994)
Shin DW, Chem. Ind. Technol., 2(1), 40 (1984)
Osterhuber EJ, McFadden MG, Roman N, 1996 International Paper and Coating Chemistry Symposium, 47 (1996)
Shibazaki H, Edagawa S, Hasegawa H, Kondo S, U.S. Patent, 4,133,894 (1979)
이동휘, 오종기, 이화영, 한국특허 31403 (1990)
Park SB, Kang YC, Park J, Heo JY, Lee KR, 한국특허 (출원중)

[Referenced By]

[1] Lee SS, "Manufacture and Utilization Technology of the Precipitated Calcium Carbonate," 1st ed., Korea Institute of Geology, Mining & Materials, Taejon, Korea (1996)

[2] Strutz MD, Pflieger JC, Duncan PA, Pulp Paper Can., 92(8), 39 (1991)

[3] Oh JG, Lee HY, Kim SG, Chem. Ind. Technol., 12(1), 4 (1994)

[4] Shin DW, Chem. Ind. Technol., 2(1), 40 (1984)

[5] Osterhuber EJ, McFadden MG, Roman N, 1996 International Paper and Coating Chemistry Symposium, 47 (1996)

[6] Shibazaki H, Edagawa S, Hasegawa H, Kondo S, U.S. Patent, 4,133,894 (1979)

[7] 이동휘, 오종기, 이화영, 한국특허 31403 (1990)

[8] Park SB, Kang YC, Park J, Heo JY, Lee KR, 한국특허 (출원중)