摘要
石灰石经煅烧、消化、碳化可制取纳米碳酸钙产品,文章考察了碳化前的工艺条件对制备的纳米碳酸钙产品性能的影响,实验结果表明:采用电加热方式煅烧石灰石能过提高消化反应活性以及石灰乳的产率,并能提高碳化得到的纳米碳酸钙产品的比表面积,降低吸油值,提高产品的白度;采用高温消化以及增加石灰乳的陈化时间的方法,也能提高石灰乳的产率以及纳米碳酸钙产品的比表面积,并且在消化时加入药剂H能过缩短陈化时间。
Nano calcium carbonate can be achieved by the process of calcining limestone, digesting quicklime and carbonation. The effect of process before carbonation was studied, and the rusult was that by the process of calcining limestone by electric heating, digestion reactivity and yield of milk of lime could be increased, and the performance of the product of nano calcium carbonate, included specific surface area, oil absorption value and whiteness, could be improved obvious; The performance of nano calcium carbonate also could be improved by the process of high temperature of digestion or increasing the aging time. Aging time could be shortened through adding agent H in the process of digestion.
出处
《广东化工》
CAS
2012年第7期56-57,共2页
Guangdong Chemical Industry
关键词
石灰石
消化温度:纳米碳酸钙
碳化反应
limestone
digestion temperature
nano calcium carbonate
carbonation reaction
