摘要
使用高剪切涡流装置,通过涡轮转子高速剪切形成的涡流气液湍流,实现了氢氧化钙悬浊液与二氧化碳混合气异相反应的超细均匀分散. 该设备体积小. 该法的主要特点在于反应物能在一定压力下定量进入高剪切釜进一步破碎,达到粒径分布均匀,产出高并能连续生产超微沉淀碳酸钙,其平均表观粒径≤30 nm,并有较窄的粒径分布,尺寸可控. 还探索了该工艺所必需的各种参数及反应条件.
A new method is reported for preparing ultra-fine CaCO3 power with average apparent particle size of about 20~30 nm by the new turbo-flow equipment with high shearing force. The suspension of Ca(OH)2 and mixture gases of CO2 and air were dispersed well in the turbo-flow equipment, and smashed in the high-shearing container under certain pressure. This method can control the shape and size of CaCO3 powder. In this technology, the equipment is simple with small volume and high efficiency, and the fluid flows smoothly and quantificationally. The technological parameters of the new method were also explored.
出处
《过程工程学报》
EI
CAS
CSCD
北大核心
2004年第4期330-334,共5页
The Chinese Journal of Process Engineering
关键词
超微沉淀碳酸钙
添加剂
影响因素
碳化温度
碳化时间
ultra-fine CaCO3
additional agent
impact factor
carbonizing temperature
reaction time
