东北大学学报（自然科学版）

东北大学学报(自然科学版) ›› 2010, Vol. 31 ›› Issue (1): 76-79.DOI: -

• 论著 • 上一篇    下一篇

利用脱硫石膏水热合成硫酸钙晶须

史培阳;邓志银;袁义义;孙骏;   

  1. 东北大学材料与冶金学院;
  • 收稿日期:2013-06-20 修回日期:2013-06-20 出版日期:2010-01-15 发布日期:2013-06-20
  • 通讯作者: -
  • 作者简介:-
  • 基金资助:
    教育部新教师基金资助项目(20070145053);;

Preparation of calcium sulfate whiskers from desulphurized gypsum by hydrothermal synthesis

Shi, Pei-Yang (1); Deng, Zhi-Yin (1); Yuan, Yi-Yi (1); Sun, Jun (1)   

  1. (1) School of Materials and Metallurgy, Northeastern University, Shenyang 110004, China
  • Received:2013-06-20 Revised:2013-06-20 Online:2010-01-15 Published:2013-06-20
  • Contact: Shi, P.-Y.
  • About author:-
  • Supported by:
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摘要： 以脱硫石膏为原料,采用水热法工艺制备硫酸钙晶须.借助电导率、化学电位、XRD和SEM等分析方法,在不同反应条件下研究了硫酸钙晶须生长的变化规律,随着反应温度、反应时间、固液比和初始pH值的增加,硫酸晶须的长径比呈先增加后减小的趋势.在本实验条件下最佳工艺参数为:反应温度140℃,反应时间120min,固液比为1∶10,初始pH值为5,原料粒度1.36μm.此时所制备的硫酸钙晶须长径比可以达到82.57.

关键词: 脱硫石膏, 硫酸钙晶须, 水热法, 长径比

Abstract: Hydrothermal synthesis was employed to prepare calcium sulfate whiskers (CSW) with desulphurized gypsum as raw material. The growth rules of CSW were investigated under different reaction conditions by virtue of chemical potential, electric conductivity, XRD and SEM. It was found that the aspect ratio of CSW tends to increase then decrease with increasing of the reaction temperature/time, solid-liquid ratio and initial pH value. The optimized process parameters as a result of the tests are the solid-liquid ratio is 1:10, initial pH value 5, raw material grain size 1.36μm and reaction temperature/time 140°C/120min, by which the aspect ratio of CSW may come up to 82.57.

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