Results 191 to 200 of about 8,683 (235)
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Reduction of Ilmenite with Charcoal
Journal of Chemical Education, 2005This laboratory exercise introduces students to a heterogeneous reaction and the use of X-ray diffraction to identify mineral phases and to propose reaction schemes. The exercise involves the reduction of ilmenite with charcoal and the efficiency of the reduction process is monitored using wet-chemical methods.
Kristy M. Blyth +4 more
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Lunar and Terrestrial Ilmenite Basalt
Science, 1971A basalt hornfels from the Keweenawan Duluth complex in Minnesota contains 7 percent by weight of titanium dioxide and is similar in many respects to the Apollo 11 samples. Hornfels texture, as well as primary textures in lunar rocks, resemble those in Keweenawan rocks.
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Kinetics of the oxidation of ilmenite
Oxidation of Metals, 1975The oxidation of ilmenite (FeTiO3) in air and dry oxygen was investigated over the temperature interval 600 to 970°C. Dense platelets of ilmenite crystals as well as powder samples of ilmenite were oxidized. The weight data were recorded employing a thermobalance. The oxidation kinetics of ilmenite platelets were parabolic except for the initial stages
D. Bhogeswara Rao, M. Rigaud
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Journal of Solid State Chemistry, 1970
Abstract Roasting ilmenite concentrates with alkali metal carbonates and nitrates at 860°C produced a series of MFeTi oxide phases (M = Na or K) which were readily interconvertible on adding alkali or ilmenite, as appropriate, and reroasting at 860°C. Mixed NaK compounds were not observed.
E. Foley, Kathryn P. MacKinnon
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Abstract Roasting ilmenite concentrates with alkali metal carbonates and nitrates at 860°C produced a series of MFeTi oxide phases (M = Na or K) which were readily interconvertible on adding alkali or ilmenite, as appropriate, and reroasting at 860°C. Mixed NaK compounds were not observed.
E. Foley, Kathryn P. MacKinnon
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Ferroelectricity in the Ilmenite Structure
Physical Review, 1952The ferroelectricity of the ilmenite structure minerals lithium tantalate and lithium niobate is studied theoretically, using the method recently introduced by Slater for barium titanate. The metal ions are assumed to move in a potential which has small quartic terms as well as the usual quadratic terms, all satisfying the appropriate crystal symmetry ...
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Alteration of ilmenite and "arizonite
Economic Geology, 1960Criticizes the proposed use of the term arizonite to designate the end-product of alteration of ilmenite, as suggested in a paper by Flinter.
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Conditions for ilmenite alteration
Economic Geology, 1961Discussion of GeoScience Abstracts 3-1630. In order that Austin9s postulation be applicable to sand ilmenites generally, it would be necessary to explain their high ferric iron content. The presence of ferric iron and lower intensity of alteration in New Jersey and other sand ilmenites is good evidence for a different alteration environment than that ...
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Reagent types and action mechanisms in ilmenite flotation: A review
International Journal of Minerals, Metallurgy and Materials, 2022Jiushuai Deng +2 more
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Selective flotation of ilmenite from ilmenite-rutile mixtures
Mineral Processing on the Verge of the 21st Century, 2017M Köse, Ç Hoşten, Y Topkaya, M Akser
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Study on the mineral characteristics and separation performances of a low-TiO2 ilmenite
Minerals Engineering, 2022Zhitao Yuan, Yuankai Xu, Lixia Li
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