Mechanically induced reactivity of gibbsite: Part 1. Planetary milling

Alex, T C and Kumar, Rakesh and Roy, S K and Mehrotra, S P (2014) Mechanically induced reactivity of gibbsite: Part 1. Planetary milling. Powder Technology, 264 (IF-2.269). pp. 105-113.

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Gibbsite [γ-Al(OH)3] precipitated fromBayer leach liquor ismechanically activated in a planetary mill atambient conditions. Mechanical activated (MA) gibbsite is characterized in terms of particulate characteristics, structural characteristics and reactivity. Physicochemical changes duringMAinvolved (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

Item Type:Article
Official URL/DOI:
Uncontrolled Keywords:Mechanical activation Gibbsite Particle aggregation Amorphisation Reactivity Dehydroxylation temperature
Divisions:Material Science and Technology
ID Code:6925
Deposited By:Sahu A K
Deposited On:16 Jun 2014 11:41
Last Modified:04 May 2016 16:45
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