Results 21 to 30 of about 347,742 (199)
Zaštita Materijala, 2017 Alumosilicates have advantages over other adosrbents because they have high adsorption capacity and high selectivity. Due to this fact, the paper investigates the synthesis and characterization of the aluminosilicate materialused as a potential adsorbent
Miladin Gligorić, Zoran Obrenović
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Growth and texture of Spark Plasma Sintered Al2O3 ceramics: a combined analysis of X-rays and Electron Back Scatter Diffraction [PDF]
, 2013 Textured alumina ceramics were obtained by Spark Plasma Sintering (SPS) of undoped commercial a-Al2O3 powders. Various parameters (density, grain growth, grain size distribution) of the alumina ceramics, sintered at two typical temperatures 1400{\deg}C ...
Barry Carter C. +13 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
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The role of Si impurities in the transient dopant segregation and precipitation in yttrium-doped alumina [PDF]
, 2010 Y-doped alumina was sintered at 1500 degrees C for 10 h under ultra-clean experimental conditions without experiencing any abnormal grain growth. The yttrium was fairly homogeneously distributed at the grain boundaries, with a mean value of (Gamma) over ...
Cannon, Rowland M. +6 more
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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
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Mechanical and tribological properties of Fe/Cr-FeAl2O4-Al2O3 nano/micro hybrid composites prepared by Spark Plasma Sintering [PDF]
, 2011 Fe/Cr–Al2O3 nanocomposite powders are prepared by H2 selective reduction of oxide solid solutions. These powders, an alumina powder and a starting oxide powder, are sintered by spark plasma sintering.
Chevallier, Geoffroy +5 more
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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-microstructure-property relationships in double-walled carbon nanotubes/alumina composites [PDF]
, 2013 Double-walled carbon nanotube/alumina composite powders with low carbon contents (2– 3 wt.%) are prepared using three different methods and densified by spark plasma sintering.
Estournès, Claude +4 more
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