Bleaching kaolin by heap leaching with oxalic acid

Blanqueo de caolín por medio de lixiviación en pilas con ácido oxálico

Main Article Content

Manuel Julián Barros-Daza
Pablo Bustamante-Baena
Moisés Oswaldo Bustamante-Rúa
Abstract

The experimental results of leaching were studied in batteries for bleaching kaolin scale The experimental results of leaching were studied in batteries for bleaching kaolin scale development based on a theoretical laboratory. The main objective was to evaluate the removal of iron oxides on the surface of kaolin, Methods: the use of different concentrations of oxalic acid drip for 48 days in each heap. Results: The whiteness index of feed Kaolin is 52.1%, with an iron content of 0.19%. Conclusions: The results showed that for acidic concentrations 0.15M, 0.015M and 0.95M, the iron removed was approximately 72.2%, 26.7%, 90.8% and the whiteness index rose to 90.23%, 83.8%, and 97% respectively. 

Keywords

Downloads

Download data is not yet available.

Article Details

Author Biographies (SEE)

Manuel Julián Barros-Daza, Universidad Nacional de Colombia, Medellín.

Ingeniero de Minas y Metalurgia.

Pablo Bustamante-Baena, Universidad Nacional de Colombia, Medellín

Ingeniero de Minas y Metalurgia.

Moisés Oswaldo Bustamante-Rúa, Universidad Nacional de Colombia, Medellín

Doctor en Ciencias de la Ingeniería con Mención en Metalurgia Extractiva.
References

H. Cornelius, Manual de mineralogia de DANA, Reverte, S. Barcelona, 1978.

Y. Hu and X. Liu, “Chemical composition and surface property of kaolins,” Miner. Eng., no. 11, pp. 1279-1284, Nov. 2003.

K. Ferguson, “Kaolin utilization in paper and paperboard grows beyond traditional U.S., U.K. Deposits”, Pulp & Paper, vol 77, no. 9, pp. 34, 2003.

A. Cabrera La Rosa, “Minerales no metalicos I. Caolin,” Ministerio de fomento y obras publicas, Instituto Nacional de Investigación y Fomento Minero. Lima, Peru, 1965.

V. . Ambikadevi y M. Lalithambika, “Effect of organic acids on ferric iron removal from iron-stained kaolinite”, Applied Clay Science, vol. 16, no. 3–4, pp. 133–145, Mar. 2000.

A. M. Gómez Jiménez y M. O. Bustamante Rua, “Estudio del efecto de la fracción de ultrafinos, sobre blanqueo de caolines”. Tesis de Maestría, Universidad Nacional de Colombia, Medellín, Colombia, 2012.

A. M. Muñoz García and M. O. Bustamante Rua, “Blanqueo de caolines de la union Antioquia usando metodos hidro-electrometalúrgicos”. Tesis de Maestría, Universidad Nacional de Colombia, Medellín, Colombia, 2010.

D. Panias, M. Taxiarchou, I. Douni, I. Paspaliaris, y A. Kontopoulos, “Mechanisms of dissolution of iron oxides in aqueous oxalic acid solutions”, Hydrometallurgy ,vol. 42, no. 2, pp.257–265, 1996.

J. P. Pinzón Forero, “Balance de masa en la planta de blanqueo de Caolín - SUMICOL”. Tesis de pregrado, Universidad Nacional de Colombia, Medellín, Colombia, 2010.

M. L. Free. Hidrometallurgy: Fundamentals and applications. John Wiley & Sons, Inc., Hoboken, New Jersey, 2013.

N. Dhawan, M. S. Safarzadeh, J. D. Miller, M. S. Moats, y R. K. Rajamani, “Crushed ore agglomeration and its control for heap leach operations” Minerals Engineering, no. 41, pp. 53-70, Feb. 2013.

A. Nosrati, W. Skinner, D. J. Robinson, y J. Addai-Mensah, “Microstructure analysis of Ni laterite agglomerates for enhanced heap leaching”, Powder Technology, vol. 232, pp. 106–112, Dec. 2012.

OJS System - Metabiblioteca |