纳米碳酸钙均匀度和粒度影响因素的研究

Study on Influencing Factors of Evenness Degree and Partical Size of Nanometer Calcium Carbonate

在实验室条件下,以石灰石为原料,通过间歇式碳化反应合成了纳米碳酸钙产品。通过单因素条件试验,在CO2流量为1.0L/(h·gCa(OH)2),碳化初始温度为20℃,Ca(OH)2浓度控制在8wt%时,可以制备出粒度为27nm,均匀度为4.6的纳米碳酸钙产品。

The nanometer CaCO3 was prepared taking limestone as raw material with batch carbonization method in lab. By means of single factor tests, nanometer CaCO3 is obtained, which partical size is 27nm and evenness degree is 4.6 under the conditions as follows： the CO2 flow rate is 1.0 L/（h·gCa（OH）2） the reaction temperature is 20℃; the initial Ca（OH）2 concentration is 8wt%.