Results 21 to 30 of about 345,040 (275)
Gas and surface diffusion in modified γ-alumina systems [PDF]
, 1989 The transport of pure gases through a microporous membrane is described. The alumina-based membrane (pores 2.5-4 nm) is suitable for Knudsen diffusion separation.
Burggraaf, A.J. +2 more
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The effect of chemical and mineralogical composition of red mud on alkalinity parameters
Zaštita Materijala, 2017 Red mud is highly alkaline colloidal suspension, which remains after processing bauxite into alumina by Bayer’s proceedings. Despite repeated washing red mud keep strong alkalinity, due to the presence of residual base and a number of alkaline minerals ...
Ljubica Vasiljević, Gordana Ostojić
doaj +1 more source
Alumina-coated hollow glass spheres/alumina composites
Journal of Materials Science, 1997 Coating of alumina onto the surface of hollow glass spheres was accomplished by controlled heterogeneous precipitation from aqueous solutions. The processing conditions were optimized to yield thin and uniform precursor coatings. After calcination, converting the precursor to alumina, the alumina-coated hollow glass spheres formed free-flowing powders ...
Wu, S., Jonghe, L.C. De
openaire +2 more sources
A soft sensor for the Bayer process
Journal of Mathematics in Industry, 2017 A soft sensor for measuring product quality in the Bayer process has been developed. The soft sensor uses a combination of historical process data recorded from online sensors and laboratory measurements to predict a key quality indicator, namely ...
Vincent Cregan +2 more
doaj +1 more source
Zaštita Materijala, 2016 This paper shows the synthesis of detergent zeolite type 4A, on the precise conditions of crystallization with time of 4 hours at 85°C. Zeolites without impurities were synthesized with clean raw material and also zeolites with the addition of organic ...
Ljubica Vasiljević, Željko Ostojić
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Prediction of Red Mud Bound-Soda Losses in Bayer Process Using Neural Networks [PDF]
Iranian Journal of Chemical Engineering, 2016 In the Bayer process, the reaction of silica in bauxite with caustic soda causes the loss of great amount of NaOH. In this research, the bound-soda losses in Bayer process solid residue (red mud) are predicted using intelligent techniques.
M. Mahmoudian, A. Ghaemi, H. Hashemabadi
doaj
Preparation and Characterization of High-Temperature Thermally Stable Alumina Composite Membrane [PDF]
, 1991 A crack- and pinhole-free composite membrane consisting of an α-alumina support and a modified γ-alumina top layer which is thermally stable up to 1100°C was prepared by the sol–gel method.
Burggraaf, A.J., Lin, Yue-Sheng
core +3 more sources
Direct electrodeposition of aluminium nano-rods [PDF]
, 2008 Electrodeposition of aluminium within an alumina nano-structured template, for use as high surface area current collectors in Li-ion microbatteries, was investigated.
Edström, Kristina +5 more
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Zaštita Materijala, 2018 Red mud represents tailings which remains after the processing of bauxite into alumina by Bayer's proceedings. All the elements are present in the red mud are found in the form of different minerals.
Aleksandar Došić, Gordana Ostojić
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Predictive Flood Susceptibility Modelling with Machine Learning: Insights from The Baitarani River Basin, Odisha [PDF]
EPJ Web of ConferencesFloods are among the most destructive natural hazards, causing widespread damage to ecosystems, communities, and critical infrastructure. Accurately understanding the drivers of flooding and identifying areas prone to inundation are essential for ...
Ghose Dillip Kumar +2 more
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