Effect of Experiment Parameters on the Crystalline Habit of Calcium Carbonate Whisker
碳酸化工艺参数对碳酸钙结晶习性的影响

The effect of stir speed, reaction temperature and Mg2+]/Ca2+] ratio on the crys- talline habit of CaCO3 was studied. It is shown that though the increase of reaction temperature is propitious to the formation of aragonite phase, aragonite phase cannot be formed if there is no Mg2+ existed in solution. Based on the detailed analysis of experimental result, it is concluded that Mg2+]/Ca2+] ratio is the key factor for polymorph of calcium carbonate in carbonate process.