A SIMPLE EMPIRICAL MODEL FOR PROCESSING (WASHING) OF BAUXITE ORE

Authors

  • Ishaq Ahmad Dept. of Mining Engineering University of Engineering and Technology, Peshawar, Pakistan
  • Mohammad Younas Dept. of Chemical Engineering, University of Engineering and Technology, Peshawar
  • Saeed Gul Dept. of Chemical Engineering, University of Engineering and Technology, Peshawar

Keywords:

Keywords, Bauxite, Washing, Particle size distribution, clay, silica, GGS distribution

Abstract

Silica in the form of clay agglomerated on the bauxite surface causes lot of complications in the Bayer process of alumina production. Its concentration is normally reduced in the beneficiation stage by the processing (washing) of ore followed by classification. The process may be characterized by the estimation of particle size distribution (PSD) of the washed products. Various size fractions of run-of-mine bauxite were washed in laboratory at different time intervals. The washed bauxite ore was analyzed by wet sieving. The results were plotted in the form of cumulative PSD curves. The parameters for the empirical or Gates–Gaudin–Schuhmann, (GGS) distribution functions were found as the functions of washing time of bauxite inside the drum and a general form of the GGS model was obtained to estimate the PSD of the washed product.

Author Biographies

Ishaq Ahmad, Dept. of Mining Engineering University of Engineering and Technology, Peshawar, Pakistan

Assistant Prof.

Dept. of Mining Engineering

Mohammad Younas, Dept. of Chemical Engineering, University of Engineering and Technology, Peshawar

Associate Professor, Dept. of Chemical engineering, University of Engineering and Technology, Peshawar

Saeed Gul, Dept. of Chemical Engineering, University of Engineering and Technology, Peshawar

Chairman and Associate Professor, Dept. of Chemical engineering, University of Engineering and Technology, Peshawar

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Published

2016-06-10

How to Cite

Ahmad, I., Younas, M., & Gul, S. (2016). A SIMPLE EMPIRICAL MODEL FOR PROCESSING (WASHING) OF BAUXITE ORE. Journal of the Pakistan Institute of Chemical Engineers, 44(1), 17–22. Retrieved from http://piche.org.pk/journal/index.php/jpiche/article/view/196

Issue

Vol. 44 No. 1 (2016): Journal of Pakistan Institute of Chemical Engineers

Section

Articles

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