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Titolo:
DISSOLUTION KINETICS OF CALCINED COLEMANITE IN AMMONIUM-CHLORIDE SOLUTION
Autore:
KUM C; ALKAN M; KOCAKERIM MM;
Indirizzi:
BALIKESIR UNIV,NECATIBEY FAC EDUC,DEPT CHEM BALIKESIR 10100 TURKEY ATATURK UNIV,FAC ENGN,DEPT CHEM ENGN ERZURUM 25240 TURKEY
Titolo Testata:
Hydrometallurgy
fascicolo: 2, volume: 36, anno: 1994,
pagine: 259 - 268
SICI:
0304-386X(1994)36:2<259:DKOCCI>2.0.ZU;2-I
Fonte:
ISI
Lingua:
ENG
Soggetto:
WATER; MINERALS; DIOXIDE;
Tipo documento:
Note
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
16
Recensione:
Indirizzi per estratti:
Citazione:
C. Kum et al., "DISSOLUTION KINETICS OF CALCINED COLEMANITE IN AMMONIUM-CHLORIDE SOLUTION", Hydrometallurgy, 36(2), 1994, pp. 259-268

Abstract

The leaching kinetics of calcined colemanite in ammonium chloride solutions were studied. The effects of calcination temperature, solution concentration, reaction temperature and pre-hydration were evaluated. The rate of dissolution increased with increasing calcination temperature, solution concentration and reaction temperature, while it was notaffected by pre-hydration. It was found that the dissolution rate, based on the homogeneous reaction model, can be expressed as: (1-x)-1-1=k[NH4Cl]3/4t. The activation energy for the dissolution of the colemanite sample calcined at 400-degrees-C was found to be 89 kJ mol-1.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 26/09/20 alle ore 18:06:06