uranium ore encyclopedia

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Fuel Production - Nuclear energy - Energy Encyclopedia

The extracted ore is crushed and ground and the uranium is then chemically extracted. Silicate ores are leached by sulfuric acid while carbonate ore by a solution of sodium carbonate. The uranium is extracted from the leachate, it is separated and then concentrated to uranium oxide U 3 O 8 or (NH 4) 2 U 2 O 7, known as yellowcake due to its ...

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uranium | Definition, Properties, Uses, & Facts | Britannica

uranium (U), radioactive chemical element of the actinoid series of the periodic table, atomic number 92. It is an important nuclear fuel. Uranium constitutes about two parts per million of Earth's crust. Some important uranium minerals are pitchblende (impure U3O8), uraninite (UO2), carnotite (a potassium uranium vanadate), autunite (a calcium uranium phosphate), and torbernite (a copper ...

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Uranium mining - Simple English Wikipedia, the free encyclopedia

Uranium from mining is mostly used as fuel for nuclear power plants. Uranium ores are normally processed by grinding the ore materials to a uniform particle size and then treating the ore to extract the uranium by chemical leaching. The milling process commonly yields dry powder consisting of natural uranium, " yellowcake," which is sold on ...

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Uranium | Encyclopedia

Uranium is a moderately rare element. Its abundance is estimated to be about 1 to 2 parts per million, making it about as abundant as bromine or tin. The most common ore of uranium is pitchblende, although it also occurs in other minerals, such as uraninite, carnotite, uranophane, and coffinite. Isotopes All isotopes of uranium are radioactive.

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Triton | Space Engineers Wiki | Fandom

In real life, Triton is the largest moon of the planet Neptune. In Space Engineers, it is an icy terrestrial planet with every ore except File:Icon Block Uranium Ore.png Uranium and File:Icon Block Platinum Ore.png Platinum. Triton does not support life, however at most altitudes Oxygen atmospheric density is high. At this time it is unknown what the atmospheric altitude is. Snow and ice is ...

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URANIUM Essay Example For Students - 2687 words | Artscolumbia

First the uranium must be mined in a underground or surface uranium ore mine. Next the uranium must be milled. During this process chemicals are used to convert and purify the uranium ore into semirefined oxide( U3O8) known as yellow cake. ... Encarta 98 Encyclopedia. CDrom. Microsoft, 1998. Enger, Eldon and Smith, Bradley. Environmental ...

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uranium mining | Colorado Encyclopedia

Montrose County Added by yongli on 11/14/2016 - 16:29, last changed on 12/30/2020 - 09:51 . Montrose County

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Uranium Rush 1950s - National Radiation Instrument Catalog

Grieger's Encyclopedia and Super-Catalog 1950 Handbook of Uranium Minerals 1948 Popular Prospecting 1955. The Uranium Prospector's Guide 1955 Prospecting with a Counter 1954 Prospecting for Uranium 1951 ... Uranium ore comes in a variety of colors which depend on their mixture with other chemicals. Typically, low grade ores have a yellow to ...

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Is Uranium Glass Safe to Facet? - International Gem Society

The radioactivity and amount of uranium in uranium glass vary widely. I collect the stuff and have a plate from the 1930s that is too hot (45 millirems/hr) to ship by the PO or UPS. However, much of the material sold lately has only a fraction of a percent uranium and measures only slightly above background.

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Is uranium an oxide mineral? Explained by FAQ Blog

During in-situ mining, a leaching solution is pumped down drill holes into the uranium ore deposit where it dissolves the ore minerals. How much uranium is used in a nuclear bomb? About 64 kilograms of highly-enriched uranium was used in the bomb which had a 16 kiloton yield (i.e. it was equivalent to 16,000 tonnes of TNT). It was released over ...

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Uranium ore - definition of uranium ore by The Free Dictionary

Noun 1. uranium ore - any ore from which uranium can be extracted Ac, actinium, atomic number 89 - a radioactive element of the actinide series; found in uranium ores atomic number 88, Ra, radium - an intensely radioactive metallic element that occurs in minute amounts in uranium ores

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Utah History Encyclopedia - Utah Education Network

Complete history of Utah in encyclopedia form consisting of 575 articles and over 200 historic photographs. Edited by Allan Kent Powell. Originally published by the University of Utah Press. ... By the time the town and mill were completed, however, the price of "yellowcake" (processed uranium ore) had dropped and the mill was shut down. Today ...

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Uranium unit | definition of uranium unit by Medical dictionary

uranium unit: An obsolete, non-SI (International System) unit of ionising radiation based on the ionisation of uranium, which was at first arbitrarily designated as 1.

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In situ leach - Wikipedia

In-situ leaching (ISL), also called in-situ recovery (ISR) or solution mining, is a mining process used to recover minerals such as copper and uranium through boreholes drilled into a deposit, in situ.In situ leach works by artificially dissolving minerals occurring naturally in a solid state. For recovery of material occurring naturally in solution, see: Brine mining.

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Virginia Uranium, Inc. v. Warren | LII Supreme Court Bulletin | US Law ...

Uranium is a major source of fuel for nuclear power plants, and it is essential to the construction of nuclear warheads. In the early 1980s, a uranium deposit was discovered on land owned by Coles Hills, LLC and Bowen Minerals, LLC in Pittsylvania County, Virginia. The deposit is still the largest known uranium deposit in the United States.

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Safeguards on uranium ore concentrate? the impact of modern mining and ...

Increased purity in uranium ore concentrate not only raises the question as to whether Safeguards should be applied to the entirety of uranium conversion facilities, but also as to whether some degree of coverage should be moved back to uranium ore concentrate production at uranium mining and milling facilities. This paper looks at uranium ore ...

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Yellowcake - Energy Education

Yellowcake uranium the powdered typically yellow form of uranium oxide with the chemical formula U 3 O 8.In the nuclear fuel cycle, yellowcake is a product of the second step, occuring directly after mining and is created through milling.After the uranium is mined, the ore that is obtained has many different complex uranium oxides within it. The ore is therefore reduced (milling process) to ...

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uranium | Definition, Properties, Uses, & Facts | Britannica

Uranium is a dense, hard metallic element that is silvery white in colour. It is ductile, malleable, and capable of taking a high polish. In air the metal tarnishes and when finely divided breaks into flames. It is a relatively poor conductor of electricity.

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Uranium | The Canadian Encyclopedia

Uranium (U) is the heaviest naturally occurring element. It is a hard, dense, malleable, silver-white metal which never occurs in nature in its metallic state but always in combination with oxygen, as oxides or silicates.

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Pitchblende - Simple English Wikipedia, the free encyclopedia

Pitchblende is a radioactive, uranium-rich mineral and ore.It has a chemical composition that is largely UO 2, but also contains UO 3 and oxides of lead, thorium, and rare earth elements.It is known as pitchblende due to its black color and high density.It is also commonly referred to as Uraninite.The mineral has been known at least since the 15th century from silver mines in the Ore Mountains ...

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Uranium Mineralization of Fossil Wood | Encyclopedia MDPI

Uranium mineralization may reach high levels in wood and organic debris. During the 1950s uranium boon, in the American Southwest the ore in some small mines consisted of a single fossil log [ 3][ 4]. The uranium contents of fossil logs are as high as 35 wt.% [ 5]. Figure 1.

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uranium processing - Leaching | Britannica - Encyclopedia Britannica

Roasted uranium ores are leached of their uranium values by both acidic and alkaline aqueous solutions. For the successful operation of all leaching systems, uranium must either be initially present in the more stable hexavalent state or be oxidized to that state in the leaching process. Acid leaching is commonly performed by agitating an ore-leach mixture for 4 to as long as 48 hours at ...

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Uranium mining in Australia - Wikipedia

The occurrence of uranium in Australia had been known since the 1890s. Uranium was produced as a bi-product of radium mining in South Australia at Radium Hill from 1906 and Mount Painter from 1911. A refinery at Hunters Hill, Sydney processed the ore between 1911 and 1915 for radium bromide and uranium. The radium was used for medical research and the uranium used in ceramic and glass manufacture.

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Tetravalent uranium - Big Chemical Encyclopedia

Tetravalent uranium Geochemical Nature and Types of Deposits. The cmst of the earth contains approximately 2—3 ppm uranium. AlkaHc igneous rock tends to be more uraniferous than basic and ferromagnesian igneous rocks (10). Elemental uranium oxidizes readily. The solubiHty and distribution of uranium in rocks and ore deposits depend primarily on valence state.

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Radium | The Canadian Encyclopedia

The Canadian Encyclopedia, s.v. "Radium," by Robert T. Whillans, and R.M. Williams, Accessed August 21 ... It was discovered in 1898 by Pierre and Marie Curie and G. Bémont, who chemically treated pitchblende, a uranium ore obtained as a byproduct from the Joachimsthal silver mine in Bohemia. In 1902, Marie Currie isolated the first pure salt ...

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Fuel Cycle - Nuclear energy - Energy Encyclopedia

The extracted uranium ore is processed to make pure uranium oxide which is then enriched in an enrichment facility in order to increase the concentration of the isotope 235 U to about the 3—5% that is required for producing nuclear fuel. This enriched powder uranium is pressed to make a pellet.

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Uranium ore - Wikipedia

Uranium is a silvery-gray metallic weakly radioactive chemical element.It has the chemical symbol U and atomic number 92. The most common isotopes in natural uranium are 238 U (99.27%) and 235 U (0.72%). All uranium isotopes present in natural uranium are radioactive and fissionable, and 235 U is fissile (will support a neutron-mediated chain reaction). Uranium, thorium, and one radioactive ...

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Uranium Ore | Article about Uranium Ore by The Free Dictionary

Uranium ores are divided into three groups on the basis of the conditions surrounding their formation. The endogenic ores—the first group—were precipitated at high temperatures and pressures from pegmatite melts and aqueous (presumably postmag-matic) solutions; ores of this type are characteristic of folded regions and activated cratons.

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Isotopes of uranium - Wikipedia

Uranium-232 has a half-life of 68.9 years and is a side product in the thorium cycle.It has been cited as an obstacle to nuclear proliferation using 233 U as the fissile material, because the intense gamma radiation emitted by 208 Tl (a daughter of 232 U, produced relatively quickly) makes the 233 U contaminated with it more difficult to handle. Uranium-232 is a rare example of an even-even ...

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polonium | Definition, Symbol, Properties, Uses, & Facts

polonium (Po), a radioactive, silvery-gray or black metallic element of the oxygen group (Group 16 [VIa] in the periodic table). The first element to be discovered by radiochemical analysis, polonium was discovered in 1898 by Pierre and Marie Curie, who were investigating the radioactivity of a certain pitchblende, a uranium ore. The very intense radioactivity not attributable to uranium was ...

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Utah History Encyclopedia - Utah Education Network

A center of activity, the once sleepy farming town of Moab became known as "The Uranium Capitol of the World." By 1955 there were approximately 800 mines producing high-trade ore on the Colorado Plateau. Utah alone had produced approximately nine million tons of ore valued at $25 million by the end of 1962.

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Uranium deposition - Big Chemical Encyclopedia

Uranium is a metal, and thus its acquisition is not unlike the mining of any other metallic ore. Although uranium is found nearly eveiywhere on the earth, Canada leads the world in uranium production, mostly due to its heavy financial investment m uranium exploration, and to a few sizable deposits in the Saskatchewan territoiy. Table 1 depicts ...

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Uranium mining - Energy Education

When uranium is found near the surface - usually no more than 100 meters deep - it can be extracted via open pit mining. In this method, soil and waste rock is removed by heavy equipment, allowing the ore to be accessed. The mines are carved out into sections called benches so that they can be mined methodically and safely. [4]

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uranium ore - Students | Britannica Kids | Homework Help

Uranium is extracted from ore deposits, most of which occur at or near the surface. Articles Animals Arts and Literature Earth and Geography History Life Processes Living Things (Other) Philosophy and Religion Plants ...

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Ore | National Geographic Society

Ore is a deposit in Earth's crust of one or more valuable minerals.The most valuable ore deposits contain metals crucial to industry and trade, like copper, gold, and iron.. Copper ore is mined for a variety of industrial uses. Copper, an excellent conductor of electricity, is used as electrical wire. Copper is also used in construction. It is a common material in pipes and plumbing material.

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Uranium-Lead, Ore Deposits | SpringerLink

This early interest in (uranium and uranium-rich) ore minerals for dating mainly was due to the large amounts of U, He, and Pb, respectively, needed to determine their contents - and, thus, He/U and Pb/U ratios - reliably. Nonetheless, these early age determinations were not precise.

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Donets Basin - Encyclopedia of Ukraine

The Donbas is an undulating, monotonous plain with a maximum elevation of 369 m. The plain is frequently dissected by gullies and depressions 100 m and more in depth. The most picturesque part is the high bank of the Donets River. The Donets Basin is built of thick Carboniferous strata.

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Uranium Ore Deposits by Franz J Dahlkamp - Alibris

An important prerequisite to the long-term use of nuclear energy is information on uranium ore deposits from which uranium can be economically exploited. Hence the basic purpose of this book is to present an overview of uranium geology, data characteristic for uranium deposits, and a synthesis of these data in the form of a typological ...

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radium - Students | Britannica Kids | Homework Help

An ore of uranium, pitchblende, proved to be three or four times as radioactive as uranium oxide. Curie reasoned that some previously unknown element must be present in the mineral to produce this radioactivity. Aided by her husband, the French physicist Pierre Curie, she searched for this substance. In July 1898 the Curies announced the ...

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Burial and Exhumation History of the Lujing Uranium Ore Field ... - MDPI

The Zhuguangshan complex hosts the main uranium production area in South China. We report (U-Th)/He and fission track thermochronological data from Triassic-Jurassic mineralized and non-mineralized granites and overlying Cambrian and Cretaceous sandstone units from the Lujing uranium ore field (LUOF) to constrain the upper crustal tectono-thermal evolution of the central Zhuguangshan complex.

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