Enhancing the hydration reactivity of hemi-hydrate phosphogypsum through a morphology-controlled preparation technology

Lin Yang; Jianxin Cao; Caiyu Li

doi:10.1016/j.cjche.2016.04.006

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Enhancing the hydration reactivity of hemi-hydrate phosphogypsum through a morphology-controlled preparation technology

Materials and Product Engineering | Updated：2026-01-06

- Enhancing the hydration reactivity of hemi-hydrate phosphogypsum through a morphology-controlled preparation technology
- Chinese Journal of Chemical Engineering Vol. 24, Issue 9, Pages: 1298-1305(2016)
- Affiliations：
  
  1. School of Chemistry and Chemical Engineering, Guizhou University,Guiyang,China,550025
  2. College of Resource and Environmental Engineering, Guizhou University,Guiyang,China,550025
  3. Guizhou Key Laboratory for Green Chemical and Clean Energy Technology,Guiyang,China,550025
- Author bio：
- Funds：
- DOI：10.1016/j.cjche.2016.04.006
  CLC： 10.1016/j.cjche.2016.04.006
- Published：2016
- Accepted：
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Lin Yang, Jianxin Cao, Caiyu Li. Enhancing the hydration reactivity of hemi-hydrate phosphogypsum through a morphology-controlled preparation technology[J]. , 2016, 24(9): 1298-1305.
DOI：

Lin Yang, Jianxin Cao, Caiyu Li. Enhancing the hydration reactivity of hemi-hydrate phosphogypsum through a morphology-controlled preparation technology[J]. , 2016, 24(9): 1298-1305. DOI： 10.1016/j.cjche.2016.04.006.

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Abstract

The distribution of water channels in the crystal morphology of type-α hemi-hydrated gypsum (α-HH) was theoretically detected to investigate the effect of water channels on the hydration reactivity of hemi-hydrate phosphogypsum (HPG). Results showed that water channels were mainly distributed in the cylinders of α-HH crystal

whereas no water channel existed in the conical surfaces parallel to the

-axis. Increasing the number of water channels was critical to enhance the hydration activity of HPG compared with the hydration reactivity of industrial HPG and type-α high-strength gypsum. Controlling the technological parameters of crystallization by concentration of liquid-phase SO

made it possible to obtain HPG which had the stumpy crystals of α-HH and high hydration reactivity.

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