摘要
采用碳化法制备了纳米碳酸钙,考察了消化时的水温对石灰乳产率、制备的纳米碳酸钙产品的粒径分布、比表面积、吸油值和白度等物理性能的影响。结果表明:石灰经高温消化,能够提高石灰乳的产率,产率可达92%;高温消化有利于碳酸钙比表面积的升高、同时降低碳酸钙的颗粒粒度及吸油值,对碳酸钙的白度影响较小。当消化用水的温度为60℃时,制备的碳酸钙比表面积较高,而其粒度和吸油值较低。
Nano calcium carbonate can be produced by carbonating Ca（OH）2 slurry.The effect of digestion temperture for calcium carbonate,included the yield of milk of lime,particle size distribution,specific surface area,oil absorption and whiteness,was studied.The result was that through the high digestion temperature,a high yield of milk of lime about 92% can be achieved,the specific surface area of nano calcium carbonate was increased obviously,while the particle size and oil absorption of nano calcium carbonate was decreased,but less impact on the whiteness of nano calcium carbonate.The best digestion temperature was 60 ℃ to get higher specific surface area and lower oil absorption of nano calcium carbonate.
出处
《广州化工》
CAS
2011年第23期63-64,84,共3页
GuangZhou Chemical Industry
关键词
生石灰
碳酸钙
消化温度
比表面积
quick lime
nano calcium carbonate
digestion temperature
specific surface area
