Leaching of Minerals in Degari Coal

Mohammad  Shakirullah; Imtiaz  Ahmad; Mohammad Arsala  Khan; Mohammad  Ishaq; Habib ur  Rehman; Uzma  Khan

doi:10.4236/jmmce.2006.52009

Mohammad Shakirullah^*, Imtiaz Ahmad, Mohammad Arsala Khan, Mohammad Ishaq, Habib ur Rehman, Uzma Khan

Abstract: This paper reports the demineralization of coal with EDTA, citric acid, HCl, HNO₃, acid mixture and CH₃COONH₄. The residual coal from each treatment was analyzed using Scanning Electron Microscopy. All the micrographs are bright field and reveal several features correspond to the mineral grains comprised of lithophiles like aluminum, potassium, and sodium; sidrophiles like iron and chalcophiles like copper and germanium. The absence of some morphological features correspond to inorganic elements in residual samples confirms demineralization. It is evident from the results that amongst the leachants used; acid mixture and EDTA have caused significant removal of mineral phases.

Keywords: Coal; Minerals; Leaching; Particle Morphology

Cite this paper: M. Shakirullah, I. Ahmad, M. Khan, M. Ishaq, H. Rehman and U. Khan, "Leaching of Minerals in Degari Coal," Journal of Minerals and Materials Characterization and Engineering, Vol. 5 No. 2, 2006, pp. 131-142. doi: 10.4236/jmmce.2006.52009.

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