Recovery of Molybdenum and Rhenium Using Selective Precipitation Method from Molybdenite Roasting Dust in Alkali Leaching Solution Sung-Ho Joo1,2, Young-Uk Kim1, Jin-Gu Kang 2, Ho-Sung Yoon, Dong-Su Kim3 and Shun Myung Shin1,2,+ 1Department of Resource Recycling, University of Science & Technology (UST), Daejon 305-350, Korea 2Metal Recovery Group, Mineral Resources Research …
1995-3-1 · ELSEVIER Earth and Planetary Science Letters 131 (1995) 1-15 EPSL Rhenium in the Black Sea: comparison with molybdenum and uranium Debra Colodner a, John Edmond v, Ed Boyle b a Lamont-Doherty Earth Observatory of Columbia University, NCL-104, Palisades, NY 10964, USA b Department of Earth, Atmospheric and Planetary Sciences, Massachusetts Institute of Technology, …
2016-4-20 · Rhenium in the Black Sea: comparison with molybdenum and uranium Debra Colodner a, John Edmond b, Ed Boyle b a Lamont-Doherty Earth Observatory of Columbia University, NCL-104, Palisades, NY 10964, USA b Department of Earth, Atmospheric and Planetary Sciences, Massachusetts Institute of Technology, E34-201, Cambridge, MA 02139, ...
The interaction of uranium mononitride UN with a refractory metal (rhenium) is studied in the temperature range 1773-2273 K. The coefficients of uranium diffusion from UN into polycrystalline and single-crystal rhenium and their temperature dependences are determined. The diffusion mobility of uranium in rhenium is shown to be lower than that in molybdenum and to be higher than in tungsten.
2017-2-9 · Molybdenum is present as an accessory mineral in many sandstone-type uranium deposits of Arizona, Utah, Colorado, New Mexico, Wyoming, South Dakota and Texas. The molybdenum content varies from a few ppm to 0.5%, and it has been recovered from a few deposits as a by-product of uranium mining. Molybdenum also occurs in several other
2018-7-31 · Molybdenum and Rhenium 8 At Merlin, high-grade Molybdenite mineralisation occurs in three lenses (5, 6 and 7) Molybdenite ores are essentially the only source for rhenium Re displays a close relationship with Mo at Merlin, in a ratio of about 16:1 (ppm v %) Extracted from Roskill, 2011, Kirkby 2011 30,500 assays
2020-1-24 · 1 2 A model for uranium, rhenium, and molybdenum diagenesis in 3 marine sediments based on results from coastal locations 4 5 Jennifer L. Morford a* 6 William R. Martin b 7 Roger Françoisb† 8 Caitlin M. Carney a 9 10 11 aFranklin & Marshall College, Department of Chemistry, P.O. Box 3003, 12 Lancaster, PA USA 17604-3003 13 bWoods Hole Oceanographic Institution
Dissolved Re, Mo, and U concentrations, and the concentrations of the major cations and anions, were measured in groundwaters from twenty-three springs in the southern Great Basin, USA, from June 1992 through March 1994. Rhenium concentrations ranged from 5 ± 1 pmol/kg to 190 ± 20 pmol/kg. The highest Re values were observed in the saline groundwater of Saratoga Spring in Death Valley and ...
2013-9-4 · The interaction of uranium mononitride UN with a refractory metal (rhenium) is studied in the temperature range 1773–2273 K. The coefficients of uranium diffusion from UN into polycrystalline and single-crystal rhenium and their temperature dependences are determined. The diffusion mobility of uranium in rhenium is shown to be lower than that in molybdenum and to be higher than in tungsten.
2020-7-12 · The aureole of rhenium mineralization includes the aureoles of molybdenum and uranium mineralization, which indicates a geochemical similarity of U, Mo, and Re behavior in rocks and ores of the deposit (Fig. 3; (Vikentyev and Kailachakov, 2020, Figs. 6, 7)). Intervals with the maximum concentrations of uranium, molybdenum, and rhenium at the ...
Rhenium And Molybdenum Enrichments In Sediments As Indicators Rhenium Trichloride . We sincerely welcome you to contact us through hotlines and other instant communication ways. Rhenium And Molybdenum Enrichments In Sediments As Indicators Rhenium Trichloride ... molybdenum (Mo), and uranium (U), are promising indicators of past ... Rhenium and ...
The concentrations of authigenic phases of Cd, Re, U, and Mo increase with depth in four 45-cm-long sediment box cores collected along the axis of the Laurentian Trough, Gulf of St. Lawrence. Average authigenic accumulation rates, estimated from element inventories, are similar to rates in other continental margin environments. Strong regional variations in sediment accumulation rate and ...
@article{osti_4141589, title = {THE URANIUM-MOLYBDENUM EQUILIBRIUM DIAGRAM BELOW 900 C}, author = {Dwight, A E}, abstractNote = {The U--Mo equilibrium diagram was determined up to 19 wt.% Mo and below 900 deg C. The eutectoid transformation beta in equilibrium alpha + gamma was located at 639 plus or minus 5 deg C. The lirait of the beta + gamma field was placed at 4.5 wt.% Mo at the …
2020-8-10 · Primary Tungsten, Secondary Tungsten & Cobalt, Primary Molybdenum & Rhenium, Secondary Molybdenum & Vanadium. Primary Beryllium, Primary Nickel and Cobalt, Secondary Nickel, Secondary Tin. Primary Columbium-Tantalum, Secondary Tantalum, Secondary Uranium. Primary and Secondary Titanium, Primary Zirconium & Hafnium
2005-2-19 · Without separating the interfering elements, rhenium color is developed by a slightly modified thiocyanate-stannous chloride method. The thiocyanates are extracted intoiso-amyl alcohol, the interfering elements are extracted back from the solvent with 10% KHF2 solution and the absorbance of rhenium thiocyanate is measured. Molybdenum, vanadium, tungsten, uranium, iron, cobalt, nickel, …
2004-6-1 · Total Cadmium, Rhenium, and Uranium Within each of the four cores, the distributions of total Cd, Re, and U are similar ( Fig. 1 ). At St. 1, the trace element concentrations are low and, following a slow initial increase in the top few centimeters, nearly constant or slowly increasing with depth.
Rhenium concentrations were measured in the Black Sea to determine the behavior of this redox-sensitive element in an anoxic basin. Under reducing conditions, Re is removed from solution, leading to its depletion from Black Sea deep waters. Compared with uranium, water column Re and Mo profiles show evidence of removal from mid-depths, suggesting that these elements are scavenged either in …
· Dissolved Re, Mo, and U concentrations, and the concentrations of the major cations and anions, were measured in groundwaters from twenty-three springs in the southern Great Basin, USA, from June 1992 through March 1994. Rhenium concentrations ranged from 5 ± 1 pmol/kg to 190 ± 20 pmol/kg. The highest Re values were observed in the saline groundwater of Saratoga Spring in Death …
2021-7-16 · Rhenium resources are dominantly contained in porphyry copper-molybdenum-gold deposits, which supply approximate 80% of the rhenium produced by mining (John et al. 2017 and references therein). The remaining rhenium resources are mainly associated with sediment-hosted strata-bound copper deposits and sandstone-type uranium deposits (John et al ...
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