Dissolution kinetics of calcined ulexite in ammonium carbonate solutions
Küçük Resim Yok
Tarih
2007
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Korean Institute Chemical Engineers
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
The leaching kinetics of calcined ulexite in ammonium carbonate was studied in this work. The effect of parameters of ammonium carbonate concentration, solid/liquid ratio, stirring speed, calcination temperature and reaction temperature was determined in the experiments. It was found that the conversion rate increased with increasing ammonium carbonate concentration, reaction temperature and decreasing solid/liquid ratio. However, the effect of stirring speed on the conversion rate was insignificant. The experimental data practised the heterogeneous and homogeneous models, and an acceptable model for the conversion rates of ulexite was determined to be a first-order pseudo-homogeneous reaction model. The activation energy of dissolution process was determined to be 35.3 kJ/mol.
Açıklama
Anahtar Kelimeler
ammonium carbonate, calcined ulexite, reaction kinetics, leaching
Kaynak
Korean Journal of Chemical Engineering
WoS Q Değeri
Q3
Scopus Q Değeri
Q2
Cilt
24
Sayı
6
