Kinetics modeling of hydroboracite dissolution in hydrochloric acid

被引：0

作者：

Morales G.V. ^{[1
]}

Quiroga O.D. ^{[1
]}

Tolaba E.N. ^{[1
]}

机构：

[1] Facultad de Ingeniería, Consejo de Investigación, Universidad Nacional de Salta, Salta

来源：

Informacion Tecnologica | 2010年 / 21卷 / 05期

关键词：

Boric acid; Dissolution kinetics; Hydroboracite; Modeling;

D O I：

10.1612/inf.tecnol.4382it.09

中图分类号：

学科分类号：

摘要：

The kinetics modeling of hydroboracite in hydrochloric acid solutions was developed. The dissolution was carried out in a batch reactor at atmospheric pressure. The effects of the temperature, particle size, solid/liquid ratio and concentration of the solution on the dissolution rate were investigated. It was found that the dissolution rate is always very fast, increases with increasing reaction temperature and with decreasing particle size, and decreases with an increase in the solid/liquid ratio. The experimental data were analyzed with different kinetics models presented in literature, for fluid-solid reactive transformations. It was determined that the dissolution rate fit to the diffusive control model, with activation energy of 13.48 KJ/mol.

引用

页码：21 / 26

页数：5

共 11 条

[1]

Alkan M., Dogan M., Namli H., Dissolution Kinetics and Mechanism of Ulexite in Oxalic Acid Solutions, Industrial and Engineering Chemistry Research, 43, 7, pp. 1591-1598, (2004)

[2]

Demirkiran N., Kunkul A., Dissolution kinetics of ulexite in perchloric acid solutions, International Journal of Mineral Processing, 83, 1-2, pp. 76-80, (2007)

[3]

Demirkiran N., A study on dissolution of ulexite in ammonium acetate solutions, Chemical Engineering Journal, 141, pp. 180-186, (2008)

[4]

Demirkiran N., Dissolution kinetics of ulexite in ammonium nitrate solutions, Hydrometallurgy, 95, pp. 198-202, (2009)

[5]

Ekmekyapar A., Demirkiran N., Kunkul A., Dissolution kinetics of ulexite in acetic acid solutions, Chemical Engineering Research and Design, 86, pp. 1101-1016, (2008)

[6]

Kunkul A., Dermirkiran N., Baysar A., Dissolution kinetics of ulexite in ammonium sulfate solutions, Ind. Eng. Chem. Res., 42, pp. 982-986, (2003)

[7]

Kurbas A., Kocakerim M.M., Kucuk O., Yartasi A., Dissolution of colemanite in aqueous solutions saturated with both sulfur dioxide (SO2) and boric acid, Ind. Eng. Chem. Res., 45, pp. 1857-1862, (2006)

[8]

Morales G.V., Capretto M.E., Mercado Fuentes L., Quiroga O.D., Dissolution kinetics of hydroboracite in water saturated with carbon dioxide, Hydrometallurgy, 58, pp. 127-133, (2000)

[9]

Quiroga O.D., Morales G.V., Villa L.T., Vicente M.S., Tratamiento cinético de reacciones fluidosólido reactivo. II) Desarrollo de un software y ejemplo de aplicación, JATRAMI, pp. 405-410, (2000)

[10]

Tuba H., Yartasi A., Kinetic investigation of reaction between ulexite ore and phosphoric acid, Hydrometallurgy, 96, pp. 294-299, (2009)

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