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Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 11 of 11 for “"uranium ore"”.
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Statistical Analysis of the Environmental Geochemistry of an Unmined Uranium Ore Deposit
… particularly important is in the exploitation of ore deposits. Ore deposits consist of concentrations of elements or minerals that are enriched enough to be of potential economic value. Their unusual geochemistry often leaves a signature on the environment that can both aid in location an economic …
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The geology, petrography, geochemistry and uranium ore mineralogy of the Namibplaas sheeted leucogranites, Damaran orogen, Namibia
… research study focused on the previously unknown uranium mineralisation hosted in garnet and magnetite bearing sheeted leucogranites (SLG's) I alaskites at Namibplaas. The various SLG's were distinguished and characterised by means of field, petrographic and geochemical studies into B, C and …
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Geometric and hydrodynamic modelling of fluid-structural relationships in the southeastern Athabasca Basin, Saskatchewan, Canada, with implications for uranium ore genesis
The high-grade unconformity-related uranium deposits in the Athabasca Basin in northern Saskatchewan, Canada, generally show close spatial relationships with reactivated basement faults. However, the nature of this relationship has not been well understood. This thesis aims to address this problem …
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The isotope geochemistry of uranium: Igneous petrology, ore deposits, and groundwater contamination
… three geologic settings: basalt differentiation, uranium ore genesis, and the remediation of a uranium-contaminated groundwater system. In the latter two cases, 238U/235U is used as a tracer of uranium reduction. 238U preferentially enters the reduced (solid) U phase, thus analysis of U ores can …
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Optimization of material flow in the nuclear fuel cycle using a cyclic multi-stage production-to-inventory model
… times at each stage, and for escalating costs of uranium ore. It does not allow shortages to occur in inventories. The model is optimized by the application of the calculus of variations and specifically through recently developed theorems on the solution of functionals constrained by …
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Evaluating Uranium Depth Versus Socio-Economic Statistics for Residential Radon Vulnerability in Warren County, Kentucky
… is one of the radioactive daughter products of uranium. According to the United States Environmental Protection Agency (US EPA), radon exposure causes approximately 22,000 lung cancer deaths in the United States per year. The City of Bowling Green, in Warren County, is underlain by karst, an …
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The energy analysis of burner reactor power systems
… and, in particular, the effect of extracting uranium from different sources is studied in detail. For ores, an important inverse relationship between energy use and ore grade is investigated and quantified. The physical limit at which the energy input to the system is equal to its output is …
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Mineralogical Characterization of Uranium Ores, Blends and Resulting Leach Residues from Key Lake Pilot Plant, Saskatchewan, Canada
The production and storage of uranium mine mill tailings have the potential to contaminate local groundwater and surface waters with metals and metalloids. As such, an understanding of the solids reservoirs for potential contaminants in uranium ore blends and leach residues (solid wastes generated …
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Used nuclear fuel storage options including implications of small modular reactors
… for the nuclear fuel cycle, including demand for uranium, enrichment services and the amount of used nuclear fuel. The study considers the nuclear energy system evolution over a period of 100 years. Through a review of available literature, post-reactor fuel storage and handling options have been …
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Life Cycle Analysis of Greenhouse Gas Emissions from the Mining and Milling of Uranium in Saskatchewan
… gas (GHG) emissions intensity during the uranium mining-milling phase of the nuclear fuel cycle for three paired uranium mine-mill operations in northern Saskatchewan (SK). The study period runs from 2006 – 2013 for two of the three pairs, and from 1995-2010 for the third. The life cycle …
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Modeling energy consumption in the mining and milling of uranium
… in the mining, milling, and refining of uranium are formulated. The purpose of the models is to estimate the energy-to-grade dependence for uranium extraction, while defining a minimum grade that can be feasibly mined and produced. The results serve as a basis for understanding the …