Mechanical activation of gibbsite and boehmite: new findings and their implications

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dc.contributor.author Mehrotra, S. P.
dc.contributor.author Alex, T. C.
dc.contributor.author Greifzu, G.
dc.contributor.author Kumar, Rakesh
dc.date.accessioned 2015-12-22T11:59:11Z
dc.date.available 2015-12-22T11:59:11Z
dc.date.issued 2016-01
dc.identifier.citation Mehrotra, Surya Pratap; Alex, T. C.; Greifzu, G. and Kumar, Rakesh, “Mechanical activation of gibbsite and boehmite: new findings and their implications”, Transactions of the Indian Institute of Metals, DOI: 10.1007/s12666-015-0633-6, vol. 69, no. 1, pp. 51-59, Jan. 2016.
dc.identifier.issn 0975-1645
dc.identifier.uri http://doi.org/10.1007/s12666-015-0633-6
dc.identifier.uri https://repository.iitgn.ac.in/handle/123456789/2024
dc.description.abstract Almost the entire metallurgical grade alumina is produced from bauxite using the Bayer process. The leaching conditions in Bayer process depend on various Al-oxyhydroxide minerals/phases present in the bauxite. Among the various bauxite types, gibbsitic (trihydrate) bauxite is easiest to digest. Monohydrate (boehmitic and diasporic) bauxites need more stringent digestion conditions in terms of temperature, pressure and alkali concentration. Mechanical activation during milling, especially high energy milling, results in enhanced reactivity of solids due to physicochemical changes induced by milling. This paper is an overview of our recent research on mechanical activation of bauxite and its constituent phases, gibbsite and boehmite. This paper focuses on the leaching of mechanically activated bauxite ores. Complementary results on mechanical activation of gibbsite and boehmite phases are included for a deeper understanding of mechanical activation of bauxite. Implications of these results are highlighted in the context of the Bayer process. en_US
dc.description.statementofresponsibility by S. P. Mehrotra, T. C. Alex, G. Greifzu and Rakesh Kumar
dc.format.extent vol. 69, no. 1, pp. 51-59
dc.language.iso en_US en_US
dc.publisher Springer India en_US
dc.subject Mechanical activation en_US
dc.subject Physicochemical changes en_US
dc.subject Reactivity en_US
dc.subject Gibbsite en_US
dc.subject Boehmite en_US
dc.subject Bayer process en_US
dc.title Mechanical activation of gibbsite and boehmite: new findings and their implications en_US
dc.type Article en_US
dc.relation.journal Transactions of the Indian Institute of Metals


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