Study on application of a new model for the kinetics of diaspore leaching process

Bao, Li, Zhang, Ting-an, Nguyen, Anh V., Lv, Guozhi, Dou, Zhihe and Liu, Yan (2012). Study on application of a new model for the kinetics of diaspore leaching process. In Carlos E. Suarez (Ed.), Light metals 2012: Proceedings of the technical sessions presented by the TMS Aluminum Committee at the TMS 141st 2012 Annual Meeting & Exhibition, Orlando, Florida, USA, March 11-15, 2012 (pp. 9-13) Hoboken, NJ, USA: John Wiley & Sons. doi:10.1002/9781118359259.ch2


Author Bao, Li
Zhang, Ting-an
Nguyen, Anh V.
Lv, Guozhi
Dou, Zhihe
Liu, Yan
Title of chapter Study on application of a new model for the kinetics of diaspore leaching process
Title of book Light metals 2012: Proceedings of the technical sessions presented by the TMS Aluminum Committee at the TMS 141st 2012 Annual Meeting & Exhibition, Orlando, Florida, USA, March 11-15, 2012
Place of Publication Hoboken, NJ, USA
Publisher John Wiley & Sons
Publication Year 2012
Sub-type Research book chapter (original research)
DOI 10.1002/9781118359259.ch2
ISBN 9781118291399
9781118359259
1118291395
ISSN 1096-9586
Editor Carlos E. Suarez
Chapter number 2
Start page 9
End page 13
Total pages 5
Total chapters 223
Collection year 2013
Language eng
Abstract/Summary The process of leaching diasporic bauxite in sodium aluminate solution is the most popular method to produce alumina in Chinese alumina industry. A new consistent kinetic model for gibbsite leaching process model has been developed in our previous work. This paper aims to study the application of the new model for the diaspore leaching in industrial alkali solution. The model equation was numerically integrated applying the fourth-order Runge-Kutta technique. Nonlinear regression analysis was carried out to estimate the unknown model parameters by comparing numerical solutions with available experimental data. The new model which considers the fractal geometry of the shrinking diaspore particles and the residual aluminium concentration in particles, is more consistent with the leaching process of the diaspore particles distributing in a narrow size range than the particles with the wide range of the size distribution.
Keyword Diaspore
Leaching process
Kinetic model
Fractal dimension
Residual concentration
Q-Index Code B1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes "An update of the definitive annual reference source in the field of aluminum production and related light metals technologies, a great mix of materials science and practical, applied technology surrounding aluminum, bauxite, aluminum reduction, rolling, casting, and production."

 
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Created: Sat, 01 Sep 2012, 08:20:56 EST by Professor Anh Nguyen on behalf of School of Chemical Engineering