نتایج جستجو برای: ilmenite
تعداد نتایج: 854 فیلتر نتایج به سال:
Ilmenite is a valuable industrial mineral containing Fe and Ti elements. Two composites with different morphology and composition were produced using the reaction of synthesized ilmenite and aluminum. The molar ratios of 1:2 and 1:8 were selected. The critical temperatures of each molar ratio were determined using the Differential Thermal Analysis (DTA). The heat treatment of the systems ...
Massif-type mafic intrusions (gabbro and anorthosite) are known for their considerable resources of vanadium-bearing iron–titanium oxide ores. Massive-type gabbroic anorthosite rocks frequently associated with magmatic that have significant quantities iron, titanium, vanadium. The most promising host Fe-Ti ores the in south-eastern desert. ilmenite ore deposits hosted arc rocks. They classified...
In the present study, alkali roasting and oxalic acid leaching were used to extract titanium dioxide from ilmenite, and the effect of ethanol and ascorbic acid on the purity and recovery of titanium dioxide was investigated. In this research, ilmenite was alkali roasted with sodium carbonate for 4 hours at 900˚C. Then, the roasted ilmenite was leached with distilled water for 1 hour at room tem...
Ilmenite, aluminum and graphite can be used to produce in-situ Al2O3/TiC–Fe composites which are used as cutting tools. Few publications can be found in the literature that discusse the effect of molar ratio of aluminum and graphite on the Al2O3/TiC–Fe formation mechanism. Therefore, the present research is designed to make the issue clear. To achieve this goal, at first, the mechanism o...
ILMENITE: COMBINING PERSPECTIVES FROM SURFACE SCIENCE AND TRANSMISSION ELECTRON MICROSCOPY. R. Christoffersen 1,2 , L. P. Keller 1 , C. Dukes 3 , Z. Rahman 1,2 and R. Baragiola 3 , 1 ARES, Mail Code KR, NASA Johnson Space Center, Houston, TX, 77058, [email protected], 2 Jacobs Technology, ESCG, Mail Code JE23, Houston, TX, 77058, 3 Laboratory for Atomic and Surface Physics, Universi...
[1] We present a revised model of soil evolution constrained by the recent LSCC data for lunar soils. In addition to an observed universal increase in feldspathic components in the finer fractions of soils [Taylor et al., 2001, 2003a, 2003b], both differential melting and lateral mixing processes appear to be required during the evolution of lunar soils. We propose mare-highland mixing of a sig...
Abstract Neoproterozoic Abu Ghalaga ilmenite-bearing mafic rocks were subjected to geological, petrographical and geochemical studies integrated with mineral chemistry of ilmenite, pyrite magnetite in order deduce their petrogenesis. intrusions hosting the largest ilmenite reserve Egyptian part Arabian-Nubian Shield. Field observations revealed that impound ore, which occurs as interlayer massi...
In contrast to the corundum-type A2X3 structure, which has only one crystallographic site available for trivalent cations (e.g., in hematite), closely related ABX3 ilmenite-type structure comprises two different octahedrally coordinated positions that are usually filled with differently charged ions Fe2+Ti4+O3 ilmenite). Here, we report a synthesis of first binary compound fabricated from simpl...
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