Results 161 to 170 of about 43,321 (210)
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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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Reagent types and action mechanisms in ilmenite flotation: A review
International Journal of Minerals, Metallurgy, and Materials, 2022Jiaozhong Cai +7 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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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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A Review on the Recovery of Titanium Dioxide from Ilmenite Ores by Direct Leaching Technologies
Mineral Processing and Extractive Metallurgy Review, 2018Pretreatment of ilmenite are required to enhance leaching efficiency of ilmenite. Strong acid leaching is promising in terms of the purity of the produced TiO2, low energy consumption and waste management.
Thi Hong Nguyen, Man-Seung Lee
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Energy & Fuels, 2018
Biomass is recognized as a CO2-neutral energy resource. However, biomass is a challenging fuel to combust because of its heterogeneity with regard to the content of inorganic constituents, volatiles, and moisture.
A. Corcoran +3 more
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Biomass is recognized as a CO2-neutral energy resource. However, biomass is a challenging fuel to combust because of its heterogeneity with regard to the content of inorganic constituents, volatiles, and moisture.
A. Corcoran +3 more
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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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Gaseous Reduction Behavior of Primary Ilmenite at Temperatures Between 1273 K and 1473 K
Metallurgical and Materials Transactions B, 2021Kyungsob Choi +4 more
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Investigations on the synergistic effect of combined NaOl/SPA collector in ilmenite flotation
, 2021Siyuan Yang +5 more
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