Mechanically induced reactivity of gibbsite: Part 1. Planetary milling

Show simple item record Alex, T. C. Kumar, Rakesh Roy, S. K. Mehrotra, S. P. 2014-06-26T05:54:11Z 2014-06-26T05:54:11Z 2014-09
dc.identifier.citation Alex, T. C.; Kumar, Rakesh; Roy, S.K. and Mehrotra, S.P., "Mechanically induced reactivity of gibbsite: Part 1. Planetary milling", Powder Technology, DOI: 10.1016/j.powtec.2014.05.028, Sep. 2014. en_US
dc.identifier.issn 0032-5910
dc.description.abstract Gibbsite [γ-Al(OH)3] precipitated from Bayer leach liquor is mechanically activated in a planetary mill at ambient conditions. Mechanical activated (MA) gibbsite is characterized in terms of particulate characteristics, structural characteristics and reactivity. Physicochemical changes during MA involved (1) size reduction in the initial stages followed by particle aggregation in the later stages and changes in particle size distribution, and (2) progressive decrease in crystallite size, and increase in microstrain leading to eventual amorphisation. Reactivity of milled gibbsite (measured in terms of (1) decrease in its dehydroxylation temperature, and (2) increase in alkali dissolution) is found to increase with mechanical activation. Increased reactivity of milled gibbsite is correlated with various physicochemical characteristics. en_US
dc.description.statementofresponsibility by S.P. Mehrotra et al.,
dc.format.extent Vol. 264, pp. 105–113
dc.language.iso en en_US
dc.publisher Elsevier en_US
dc.subject Amorphisation en_US
dc.subject Dehydroxylation temperature en_US
dc.subject Gibbsite en_US
dc.subject Mechanical activation en_US
dc.subject Particle aggregation en_US
dc.subject Reactivity en_US
dc.title Mechanically induced reactivity of gibbsite: Part 1. Planetary milling en_US
dc.type Article en_US
dc.relation.journal Powder Technology

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