无机盐工业
主管:中海油天津化工研究设计院有限公司
主办:中海油天津化工研究设计院有限公司
   中海油炼油化工科学研究院(北京)有限公司
   中国化工学会无机酸碱盐专业委员会
ISSN 1006-4990 CN 12-1069/TQ

无机盐工业 ›› 2020, Vol. 52 ›› Issue (9): 15-20.doi: 10.11962/1006-4990.2019-0521

• 综述与专论 • 上一篇    下一篇

熟石膏陈化过程的研究进展

刘元会(),唐晓娜,谢蕾,姜小鹏,张云波   

  1. 青岛量子元基环保科技有限公司,山东青岛 266000
  • 收稿日期:2020-03-22 出版日期:2020-09-10 发布日期:2020-12-17

Investigation progress of ageing process of plaster of paris

Liu Yuanhui(),Tang Xiaona,Xie Lei,Jiang Xiaopeng,Zhang Yunbo   

  1. Qingdao Longdation Environmental Protection Scientific Limited Company,Qingdao 266000,China
  • Received:2020-03-22 Published:2020-09-10 Online:2020-12-17

摘要:

探讨了熟石膏陈化过程中无水石膏(AⅢ-CaSO4)与水蒸气的反应机理以及二水石膏(CaSO4·2H2O)的脱水机理。首先介绍了熟石膏陈化过程的基本原理,然后讲解了熟石膏陈化过程中水蒸气在AⅢ-CaSO4上的物理吸附与化学吸附,其后描述了熟石膏陈化过程中CaSO4·2H2O晶体的脱水行为与脱水动力学,最后提到了CaSO4·2H2O、CaSO4·0.5H2O、AⅢ-CaSO4的晶体结构。

关键词: 熟石膏, 陈化过程, 物理吸附与化学吸附, 脱水行为, 脱水动力学, 晶体结构

Abstract:

The reaction mechanism of AⅢ-CaSO4 and water vapour and the dehydration mechanism of CaSO4·2H2O during ageing process of plaster of paris were investigated.The fundamental of ageing process of plaster of paris was first introduced,then the physical adsorption and chemical adsorption of water vapour on AⅢ-CaSO4 in the ageing process of plaster of paris were interpreted,and afterwards the dehydration performance and dehydration kinetics of CaSO4·2H2O crystal in the ageing process of plaster of paris were described.Finally,the crystal structures of CaSO4·2H2O,CaSO4·0.5H2O and AⅢ-CaSO4 were mentioned.

Key words: plaster of paris, ageing process, physical adsorption and chemical adsorption, dehydration performance, dehydration kinetics, crystal structures

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