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碳酸化工艺参数对碳酸钙结晶习性的影响

刘庆峰1; 陈寿田2; 刘茜1   

  1. 1. 中科院上海硅酸盐研究所高性能陶瓷与超微结构国家重点实验室, 上海 200050; 2. 西安交通大学, 西安 710049
  • 收稿日期:2001-02-14 修回日期:2001-05-09 出版日期:2002-01-20 网络出版日期:2002-01-20

Effect of Experiment Parameters on the Crystalline Habit of Calcium Carbonate Whisker

LIU Qing-Feng1; CHEN Shou-Tian2; LIU Qian1   

  1. 1. State Key Lab of High Performance Ceramics and Superfine Microstructure; Shanghai institute of Ceramics; Chinese Academy of Sciences; Shanghai 200050; China; 2. Xi an Jiaotong University; Xi an 710049; China
  • Received:2001-02-14 Revised:2001-05-09 Published:2002-01-20 Online:2002-01-20

摘要: 研究了搅拌速度、反应温度和镁钙离子浓度比三种工艺参数对碳酸钙结晶习性的影响.指出反应温度的升高有利于碳酸钙以文石相结晶,但在无镁离子存在的高纯原料情况下,并不能使文石相碳酸钙形成;镁钙离子浓度比是影响碳酸钙结晶习性的决定性因素.

关键词: 碳酸钙, 晶须, 晶体生长

Abstract: 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.

Key words: calciumcarbonate, whisker, crystal growth

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