Results 131 to 140 of about 2,095 (190)
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Ferrorotational Selectivity in Ilmenites
Journal of the American Chemical Society, 2023Unlike what happens in conventional ferroics, the ferrorotational (FR) domain manipulation and visualization in FR materials are nontrivial as they are invariant under both space-inversion and time-reversal operations. FR domains have recently been observed by using the linear electrogyration (EG) effect and X-ray diffraction (XRD) diffraction mapping.
Xiaochen Fang +7 more
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Geochimica et Cosmochimica Acta, 1988
Abstract The ilmenite-rutile-ironequilibriaand ulvospinel-ilmenite-iron equilibria have been studied in the temperature range 990–1320 and 1050–1355 K, respectively, using an electrochemical technique. Effects on experimental results from deviations from the ideal stoichiometries FeTiO 3 , TiO 2 and Fe 2 TiO 4 have been modelled from available data
Hugh St.C O'Neill +2 more
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Abstract The ilmenite-rutile-ironequilibriaand ulvospinel-ilmenite-iron equilibria have been studied in the temperature range 990–1320 and 1050–1355 K, respectively, using an electrochemical technique. Effects on experimental results from deviations from the ideal stoichiometries FeTiO 3 , TiO 2 and Fe 2 TiO 4 have been modelled from available data
Hugh St.C O'Neill +2 more
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Reduction of Ilmenite and Ilmenite Ores
1973In recent years there has been a rising interest in the solid state reduction of ilmenite ores. This interest is linked with the processes for the production of synthetic rutile which involve the selective reduction of the iron oxides present to the metallic state.
D. Poggi, G. G. Charette, M. Rigaud
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Economic Geology, 1959
"The oxidation of ilmenite in air at high temperatures (850 degrees C) yields a mixture of hematite, pseudobrookite, and rutile in an approximate molar ratio of 1:5:7. This product is almost identical with naturally occurring 9brown leucoxene,9 a naturally occurring alteration (weathering) product of ilmenite."
M. D. Karkhanavala, A. C. Momin
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"The oxidation of ilmenite in air at high temperatures (850 degrees C) yields a mixture of hematite, pseudobrookite, and rutile in an approximate molar ratio of 1:5:7. This product is almost identical with naturally occurring 9brown leucoxene,9 a naturally occurring alteration (weathering) product of ilmenite."
M. D. Karkhanavala, A. C. Momin
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The significance of groundmass ilmenite and megacryst ilmenite in kimberlites
Contributions to Mineralogy and Petrology, 1981Criteria are suggested for distinguishing xenocrystic ilmenites from those indigenous to the host kimberlite. For instance, in contrast to groundmass grains, ilmenite xenocrysts usually are larger, have reaction rims of leucoxene and perovskite, exhibit strong magnesium enrichment outward, and sometimes have exsolution lamellae and deformation features.
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Microwave-Absorbing of Carbothermic Reduced Products of Ilmenite and Oxidized Ilmenite
Journal of Microwave Power and Electromagnetic Energy, 2014AbstractMicrowave-absorbing characteristics of carbothermic reduction products of ilmenite and oxidized ilmenite were investigated by the method of microwave cavity perturbation and XRD. Results show that there is a great change of microwave-absorbing characteristics of reduction product from oxidized ilmenite by microwave heating at temperatures of ...
Xinying Wang +7 more
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Ilmenite–CO reduction kinetics
Fuel, 2016Abstract Secondary ilmenite is an inexpensive mineral that is a potential oxygen carrier for the chemical looping process. It has excellent mechanical stability, adequate heat capacity to transfer heat from the air reactor to the fuel reactor, and possesses a modest oxygen transfer capacity.
Patrice Perreault, Gregory-S. Patience
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Comparison of Ilmenite and Nano-Ilmenite for Dye Removal and Antibacterial Activities
Journal of Nanosciences: Current Research, 2016Objective: There are differents methode for moving dyes from contaminated environment and textile industries, the gold of this study is using of nano Ilmenite with anti bacterial properties for dye degradation. Method: The Ilmenite nanoparticles were produced and their catalytic activities were determined by the color change of several dyes.
Samira Kalantari, Giti Emtiazi
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Physics of the Earth and Planetary Interiors, 1976
Ultrasonic data for the velocities of the ilmenites MgTiO3 and CoTiO3 have been determined as a function of pressure to 7.5 kbar at room temperature for polycrystalline specimens hot-pressed in a piston-cylinder apparatus at pressures up to 30 kbar. Titanate and germanate ilmenites define divergent isostructural trends on a Birch diagram of bulk sound ...
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Ultrasonic data for the velocities of the ilmenites MgTiO3 and CoTiO3 have been determined as a function of pressure to 7.5 kbar at room temperature for polycrystalline specimens hot-pressed in a piston-cylinder apparatus at pressures up to 30 kbar. Titanate and germanate ilmenites define divergent isostructural trends on a Birch diagram of bulk sound ...
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