Abstract
The microstructure of bauxite determines to a significant extent the opportunities for its beneficiation and optimum processing downstream. Adequate fine grinding commensurate with its microstructure may result in proper mineral liberation and grain size distribution required for effective ore dressing (i.e. H/M or magnetic separation) and digestion respectively. Particle size distribution, mean diameter and amount of ooidal grains as well as degree of dissemination of the impurities in polished sections of raw bauxite, ground bauxite and red mud samples were determined by means of scanning electron-microscope, electron probe micro-analyser and digital image analysis. The results of beneficiation tests (effective removal of liberated limestone but insufficient reduction of finely disseminated reactive silica) and the required digestion parameters of the mainly oolitic Greek diasporic and the Hungarian boehmitic (partly dolomitic) bauxite are discussed. Based on the microstructure, the effectiveness of beneficiation, the degree of grinding (required particle size) and also the necessary digestion parameters of any bauxite can be adequately predicted.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
Similar content being viewed by others
References
Solymár, K., Zámbó, J., Gadó, P., Orbán, M.: “The role of material science in the technological development of alumina production.” Light Metals 1978. Vol. 2. pp. 51–68.
Alliquander, E., Balkay, B., Solymár, K.: “ Improving low-grade bauxites by physical means of beneficiation.” TRAVAUX de l’ICSOBA, No. 12. 1974. pp. 37–54.
Csillag, Zs., Ceh, M.: “Role of ore dressing in beneficiation of monohydrate bauxite”. BAUXITE, Proc. of the 1984 Bauxite symposium Los Angeles, Edited by Leonard Jacob, Jr., Published by SME of AIME, New York, 1984. pp. 708–726
Solymár, K., Bujdosó, E.: “Properties of red mud in the Bayer process and its utilization.” Light Metals 1973. Edited by E. V. Clack, Vol. 2. pp. 717–744.
Orbán, M., Imre, A. Stefániai, V.: “Complex mineralogical investigation and characterization of red mud and its components.” TRAVAUX de l’ICSOBA, No. 13. 1976. pp. 491–505
Zámbó, J.: “Red mud: Its properties, handling, storage and utilization.” TRAVAUX de l’ICSOBA, No. 15. 1979. pp. 265–277.
See, J., Emond, M.: “Use of microscopy and image analysis in mineral liberation studies applied to optimising bauxite beneficiation.” Paper delivered at the XV. International Symposium “ICSOBA-2004”, 15–18 June, 2004. St. Petersburg, Russia. It will be published in TRAVAUX de l’ICSOBA, No. 35. (2004)
Bardossy, Gy.: Karst Bauxites, Bauxite Deposits on Carbonate Rocks. Akadémiai Kiadó Budapest, 1982.
Papoutes, A.: “Beneficiation plant for the bauxite of Silver & Baryte Ores Mining Co. S.A.” TRAVAUX de l’ICSOBA, No. 30. 1999. pp. 85–88.
Solymár, K., Ferenczi, T., Papanastassiou, D.: “Digestion alternatives of the Greek diasporic bauxite”, Light Metals 2002, pp. 75–81.
Papanastassiou, D., Ferenczi, T., Solymár, K.: “Processing of Greek monohydrate bauxite under moderate digestion conditions.” Paper delivered at the XV. International Symposium “ICSOBA-2004”, 15–18 June, 2004. St. Petersburg, Russia. It will be published in TRAVAUX de l’ICSOBA, No. 35. (2004)
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2016 The Minerals, Metals & Materials Society
About this chapter
Cite this chapter
Solymár, K., Mádai, F., Papanastassiou, D. (2016). Effect of Bauxite Microstructure on Beneficiation and Processing. In: Donaldson, D., Raahauge, B.E. (eds) Essential Readings in Light Metals. Springer, Cham. https://doi.org/10.1007/978-3-319-48176-0_4
Download citation
DOI: https://doi.org/10.1007/978-3-319-48176-0_4
Publisher Name: Springer, Cham
Print ISBN: 978-3-319-48574-4
Online ISBN: 978-3-319-48176-0
eBook Packages: Chemistry and Materials ScienceChemistry and Material Science (R0)