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Effects of Soluble Ions on the Hydration of Calcined Flue Gas Desulphurization (FGD) Gypsum
Fuxing Lin
Author NameAffiliationE-mail
Fuxing Lin College of Resources and Chemical Engineering, Sanming University, Sanming, Fujian 365004, China 20180105@fjsmu.edu.cn 
Abstract:
The influence of various water soluble ions on the hydration of calcined flue gas desulphurization gypsum was investigated. The presence of K+ can significantly increase the solubility of gypsum through the precipitation of K2SO4. All cations were found to accelerate the hydration of basanite, where Ca2+ shows the weakest acceleration effect. The final crystal size is not largely influenced by different salts, except for Na+, where the giant crystal with length of >130μm is observed. Current study clarifies the influence of different ions on the hydration of basanite, which could provide sufficient guide for the pre-treatment of original flue gas desulphurization gypsum before actual application.
Key words:  gypsum  flue gas desulphurization  hydration  soluble ions
FundProject:
Effects of Soluble Ions on the Hydration of Calcined Flue Gas Desulphurization (FGD) Gypsum
林福星
摘要:
The influence of various water soluble ions on the hydration of calcined flue gas desulphurization gypsum was investigated. The presence of K+ can significantly increase the solubility of gypsum through the precipitation of K2SO4. All cations were found to accelerate the hydration of basanite, where Ca2+ shows the weakest acceleration effect. The final crystal size is not largely influenced by different salts, except for Na+, where the giant crystal with length of >130μm is observed. Current study clarifies the influence of different ions on the hydration of basanite, which could provide sufficient guide for the pre-treatment of original flue gas desulphurization gypsum before actual application.
关键词:  gypsum  flue gas desulphurization  hydration  soluble ions
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