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Titolo:
SOLUBILITY OF STIBNITE ORE IN HCL SOLUTIONS
Autore:
COPUR M; COLAK S; YAPICI S;
Indirizzi:
ATATURK UNIV,FAK MUHENDISLIK,KIMYA MUHENDISLIGI BOLUMU ERZURUM 25240 TURKEY
Titolo Testata:
Industrial & engineering chemistry research
fascicolo: 11, volume: 34, anno: 1995,
pagine: 3995 - 4002
SICI:
0888-5885(1995)34:11<3995:SOSOIH>2.0.ZU;2-B
Fonte:
ISI
Lingua:
ENG
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
19
Recensione:
Indirizzi per estratti:
Citazione:
M. Copur et al., "SOLUBILITY OF STIBNITE ORE IN HCL SOLUTIONS", Industrial & engineering chemistry research, 34(11), 1995, pp. 3995-4002

Abstract

In this study, the dissolution of stibnite, Sb2S3, which is an antimony ore, in HCl solutions was investigated, taking into consideration the effect of particle size, acid concentration, stirring speed, solid-to-liquid ratio, and temperature. It was observed that the dissolutionrate increased with increasing temperature and with decreasing particle size and solid-to-liquid ratio, while no pronounced effect of stirring speed was observed. Using the experimental data, we attempted to establish a kinetic model for the dissolution of the ore in HCl solutions. Employing graphical and statistical methods, the following kineticmodel including the effect of the above choosen parameters was established to represent the dissolution process -In(1 - X) = 9.79 x 10(-10). (D)(-0.908)(C)(10.600)(S/L)(-0.321)e(-6244/T) t, where X is the conversion fraction of the mineral, D is the particle size, C the acid concentration in weight percent, and S/L is the solid-to-liquid ratio in grams per milliliter. The activation energy for this dissolution process was calculated as 52 kJ mol(-1).

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Documento generato il 07/07/20 alle ore 13:34:26