For shield design, neutrons and gamma rays are the main types of nuclear radiation, which have to be considered, since any shield attenuates that neutrons and gamma rays will be more effective for attenuating other radiations. ... Ilmenite fillers were prepared by crushing the ore, then sorting it via sieves into five groups of particulate ...
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Ilmenite and garnet are the most relevant minerals, and monazite has a special role in the controversies in India as a source for thorium (for nuclear power). A report in Down to Earth [3] stated that " A Tamil Nadu government-appointed task force found that between 2007 and 2012, about 1.35 million tonnes of ilmenite and 205,000 …
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Huge amounts of the six common commercial minerals—ilmenite, magnetite, garnet, zircon, rutile, and monazite—as well as other elements—such as uranium, thorium, zirconium, hafnium, titanium ...
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With the continuous development of nuclear technology, it is necessary to urgently solve the nuclear safety problem. γ-rays have a strong penetrating power. The γ-ray-shielding performance of ordinary concrete prepared with natural sand is weak and cannot meet the practical application of engineering. The γ-ray shielding performance of …
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High-purity ilmenite, forsterite, and actual ilmenite samples were obtained from Panzhihua City, Sichuan Province of China. The X-ray diffraction (XRD) patterns are shown in Fig. S1, indicating that the mineral was mainly composed of ilmenite, forsterite, and anorthite.Samples with particle diameters ranging from 38 to 75 μm (-75 + 38 μm) …
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In this paper, the goal is to select the most proper shield for a nuclear reactor to meet the radiation protection regulations. Two alternatives will be evaluated to …
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The area of this deposit is near 9 square km and its estimated resource amounts to about 20 million tons of ilmenite, rutile and zircon minerals in total. The average concentration of the ilmenite, monazite, zircon and other matrix minerals is 66.7%, 2.3%, 2.8% and 28.3%, respectively . There is a very high content of both thorium and uranium ...
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Ilmenite is a natural mineral composed mainly of iron and titanium oxides, and it is commonly used in the CLC process. It has a high oxygen transport capacity and is …
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Another oxide mineral found in beach sand deposits alongside monazite and zircon, ilmenite contains titanium and iron. Through meticulous separation processes, ilmenite significantly contributes ...
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Ilmenite and rutile are the most commonly found and abundant form of titanium oxide. Ilmenite is weakly magnetic mineral sand, grey-black in color, solid in form, and exists in a triangle crystal structure. ... The fuel inputs considered here across the mineral-sand processing systems are fossil fuels, renewables, nuclear, biomass, …
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A study of the penetration of primary γ rays, secondary γ rays and slow neutrons through an ilmenite—limonite concrete shield (heat resistant concrete) and …
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The paper addressed the problem of safety in the industrial and medical use of nuclear energy, as it is affected by the design and construction of light and heavy …
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Equilibrium Fe isotopic fractionation factors between garnet, ilmenite, biotite, tourmaline and fayalite are determined. We also report Mg and Ti isotopic compositions of selected Moosilauke minerals that allow us to better constrain the equilibrium fractionation factors for garnet-biotite-tourmaline (Mg isotopes) and biotite-ilmenite (Ti ...
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This work deals with the study of ilmenite/epoxy composite as an injecting mortar for cracks developed in biological concrete shields, as well as, neutrons and gamma rays attenuation. Effects of the particle size on the mechanical strengths have been ... El-Sayed Abdo et al. / Annals of Nuclear Energy 30 (2003) 175–187 187 3—A composite ...
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Nuclear power was assumed because analysis shows that it requires much less mass than solar power. Since the nuclear reactor uses about forty percent of the mass required for oxygen mining, a lower mass nuclear power design would ... ilmenite, low-pressure and high-pressure hoppers, a fluidized bed reactor, a hydrogen recycling system, water ...
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The reason is diffusion from ilmenite is much slower than these is from other minerals (Xiaohui et al., 2011). Ilmenite is more retentive than other minerals for noble gases. Thus, the ilmenite can be considered as a potential source of fuel for nuclear fusion energy (Wittenberg et al., 1986; Taylor, 1994). Thus, mapping ilmenite areas with ...
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In the present work attempt has been made to estimate the shielding parameters of the new serpentine concrete (density = 2.4 g/cm 3) using local materials on the shielding parameters for two types of heat resistant concretes, namely hematite–serpentine (density = 2.5 g/cm 3) and ilmenite–limonite (density = 2.9 g/cm …
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chemicals nuclear grade, ilmenite into TiO 2, monazite into Nd 2O3, and Th(OH) 4 concentrate, xenotime into Y 2O3, Gd 2O3, and Th(OH) 4 concentrate are obtained in one area of pilot plant or an integrated factory. The results of the study concluded that the concept of local processing of zircon sands containing monazite, xenotime, and
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One alternative to produce oxygen is using metallurgical processing of oxide minerals as ilmenite. Also, iron and titanium could be produced from ilmenite to supply a future lunar …
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fuels), nuclear energy minerals, are the 2015-16. Mineral and Energy Resources 77 Fig. 7.3 : India – Minerals (Non-Ferrous) 2015-16. 78 India : People and Economy They lie in Jharkhand-Bengal coal belt and the important coal fields in this region are Raniganj, Jharia, Bokaro, Giridih, Karanpura.
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The results show that ilmenite concrete is better than both ordinary and ilmenite—limonite concrete for γ ray attenuation, especially at deep penetration. Also it was concluded that ilmenite concrete with a density ϱ = 4.6 g/cm 3 is better than both ordinary and ilmenite—limonite concrete for slow neutron attenuation.
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The microstructure of the samples was studied by SEM and the various observed phases were analyzed using the electron microprobe analyzer. The results are given in Fig. 2 and Table 2.Ilmenite analysis showed that the TiO 2 content of the IL-F sample varies from 47.64% to 48.71% (average 48.01%) which is lower than the …
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Detrital ilmenite and its altered minerals are common in sandstone-hosted U deposits in the northern Ordos Basin, north China. Petrographic observation, SEM-EDS, EMPA, and LA-MC-ICP-MS were utilized to characterize the spatial relationship between altered ilmenite and the U minerals, and to investigate the U enrichment mechanism …
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In recent years, the close relationship between uranium and Ti-Fe oxides in the sandstone-type uranium deposits has been extensively recognized. However, the altered characteristics of ilmenite and its relationship with uranium enrichment still remain unclear. With this paper based on heavy-mineral sorting of uranium ore selected from …
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Basaltic volcanism on the Moon produced low- and high-Ti mare basalt suites that are also distinct with respect to their iron, titanium, and magnesium isotopic compositions. Here, the equilibrium fractionation of Fe and Ti isotopes between ilmenite and melt was experimentally investigated in order to evaluate the role of ilmenite in generating the …
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Ilmenite, iron-black, heavy, metallic oxide mineral, composed of iron and titanium oxide (FeTiO3), that is used as the major source of titanium. It forms solid-solution series with geikielite and pyrophanite in which …
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Annals of Nuclear Energy. Volume 23, Issue 1, January 1996, Pages 65-71. Technical note. Investigation of hematite-serpentine and ilmenite-limonite concretes for reactor radiation shielding. Author links open overlay panel I.I. Bashter 1, A.S. Makarious 2, A. El-Sayed Abdo 2. Show more. Add to Mendeley. Share.
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the population in the environment of a nuclear power plant, calculations may statistically consider the ... In the ilmenite chemical processing, it has been reported that 77% of the initial Thorium activity end up in the iron oxide waste and 18% will go into synthetic rutile [12]. Apparently from figure 3, the
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Inst. of Nuclear Science and Technology + Show Author Affiliations. The shielding effectiveness of locally developed polyboron and ilmenite-magnetite (I-M) concrete is investigated using the reactor neutron beam of the 3-MW TRIGA Mark II research reactor at the Atomic Energy Research Establishment, Savar, Dhaka. The …
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This work deals with the study of ilmenite/epoxy composite as an injecting mortar for cracks developed in biological concrete shields, as well as, neutrons and …
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