Download or read book Electrolytic Production of Neodymium Metal from a Molten Chloride Electrolyte written by Michael F. Chambers and published by . This book was released on 1991 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Electrolytic Production of Neodymium Metal from a Molten Chloride Electrolyte written by Michael F. Chambers and published by . This book was released on 1991 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Electrolytic production of neodymium metal from a molten chloride elecrolyte written by Michael F. Chambers and published by . This book was released on 1991 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Production of Lead Metal by Molten salt Electrolysis with Energy efficient Electrodes written by Jim E. Murphy and published by . This book was released on 1990 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Rare Metal Technology 2015 written by Neale Neelameggham and published by Springer. This book was released on 2016-12-01 with total page 265 pages. Available in PDF, EPUB and Kindle. Book excerpt: This collection presents the papers from a symposium on extraction of rare metals as well as rare extraction processing techniques used in metal production. Paper topics include the extraction and processing of elements like antimony, arsenic, calcium, chromium, hafnium, gold, indium, lithium, molybdenum, niobium, rare earth metals, rhenium, scandium, selenium, silver, strontium, tantalum, tellurium, tin, tungsten, vanadium, and zirconium. Rare processing techniques presented include bio leaching, molecular recognition technology, recovery of valuable components of commodity metals such as magnesium from laterite process wastes, titanium from ilmenites, and rare metals from wastes such as phosphors and LCD monitors.

Download or read book Molten Salt Electrolysis of Rare Earth Metals from Chloride Melts with Emphasis on Neodymium written by John R. Whyte and published by . This book was released on 1992 with total page 374 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Report of Investigations written by and published by . This book was released on 1991 with total page 302 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Molten Salt Electrolysis of Rare Earth Metals from Chloride Melts with Emphasis on Neodymium written by John R. Whyte (Jr.) and published by . This book was released on 1992 with total page 187 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Rare Metal Technology 2017 written by Hojong Kim and published by Springer. This book was released on 2017-02-03 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt: This collection presents papers from a symposium on extraction of rare metals as well as rare extraction processing techniques used in metal production. Topics include the extraction and processing of elements like antimony, arsenic, gold, indium, palladium, platinum, rare earth metals including yttrium and neodymium, titanium, tungsten, and vanadium. Rare processing techniques are covered, including direct extraction processes for rare-earth recovery, biosorption of precious metals, fluorination behavior of uranium and zirconium mixture of fuel debris treatment, and recovery of valuable components of commodity metals such as zinc, nickel, and metals from slag.

Download or read book Monthly Catalog of United States Government Publications written by and published by . This book was released on with total page 846 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Production and Electrolysis of Light Metals written by B. Closset and published by Elsevier. This book was released on 2013-10-22 with total page 287 pages. Available in PDF, EPUB and Kindle. Book excerpt: Production and electrolysis of light metals - smelter operations, aluminum casting, aluminum melt treatment and control, electrolysis of light metals: magnesium and aluminum. Electrolysis of light metals: lithium, titanium and gallium. Reduction and production of light metals.

Download or read book Copper Extraction from Aqueous Solutions with Liquid Emulsion Membranes written by D. N. Nilsen and published by . This book was released on 1991 with total page 462 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Bureau of Mines Research written by United States. Bureau of Mines and published by . This book was released on 1992 with total page 182 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Proceedings of the 8th Pacific Rim International Conference on Advanced Materials and Processing PRICM 8 written by FernD.S. Marquis and published by Springer. This book was released on 2017-03-21 with total page 3431 pages. Available in PDF, EPUB and Kindle. Book excerpt: PRICM-8 features the most prominent and largest-scale interactions in advanced materials and processing in the Pacific Rim region. The conference is unique in its intrinsic nature and architecture which crosses many traditional discipline and cultural boundaries. This is a comprehensive collection of papers from the 15 symposia presented at this event.

Download or read book New Publications written by United States. Bureau of Mines and published by . This book was released on 1987 with total page 654 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Electrochemical and Thermodynamic Properties of Neodymium Alloys in Molten Salts for Their Recovery written by Sanghyeok Im and published by . This book was released on 2024 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recovery of rare-earth elements is an essential process technology to achieve energy sustainability for nuclear power by closing the fuel cycle and for renewable energy by securing rare-earth supply. In detail, rare-earth fission products that accumulate into molten salts (e.g., LiCl-KCl) during reprocessing for used nuclear fuel must be recovered to reuse the salts and minimize nuclear waste. Rare-earth permanent magnets are an essential component for wind turbines and electric vehicle motors but face supply concerns with the rapid deployment of clean energy technologies. In the design of electrochemical processes for rare-earth recovery, thermodynamic and electrochemical properties of rare-earth elements are important to achieve high efficacy but are not widely available in the literature due to the high reactivity of rare-earth metals in molten salt electrolytes. Thus, the primary objective of this thesis is to comprehensively examine the essential fundamentals of rare-earth alloys in molten salt electrolytes with reliable property measurements, focusing on the binary Nd-Sn, Nd-Bi, and Nd-Fe systems. To determine the thermodynamic properties of Nd in molten salts, electromotive force (emf) measurement is introduced. Based on the established emf relation between Nd-based alloys and pure Nd via a solid fluoride electrolyte or a transient technique, less reactive two-phase alloys were employed as a stable reference electrode for reliable emf measurements, instead of pure Nd having uncertainty in molten salts. From an electrochemical cell including the Nd-Sn (xNd = 0.10) reference electrode with a two-phase (liquid + NdSn3), the measured emf values of Nd-Bi alloys (xNd = 0.15--0.40) and Nd-Sn alloy (xNd = 0.10) were stable and reproducible without an indication of cell degradation during the measurements. Furthermore, the potential difference between two identical Nd-Sn reference electrodes was measured before/after the electrochemical evaluation for 45 days, and the stability of the cell for long-term operation was verified by showing only 3 mV difference. The thermodynamic properties for the selected liquid Bi and Sn electrodes to overcome side reactions using their strong chemical interaction with Nd were investigated through coulometric titration emf measurement. Both liquid metals exhibited similar emf values, which translate to extremely low activity of Nd (aNd) at 973 K as 1.1 x 10-13 in Bi and 5.8x10--13 in Sn, confirming their strong chemical interactions with Nd. In addition, using the emf trajectory at each temperature, the solubility of Nd at 973 K was estimated at 1.46 mol% for liquid Sn, compared to 5.65 mol% for liquid Bi. For the Bi electrode with high recovery capacity, the thermodynamic description (Phase diagram) of the Nd-Bi system was updated via CALPHAD modeling with the addition of new data, including activity and solubility by emf measurements, phase transition temperatures by DSC, and the recently observed Nd3Bi7 compound. Highly efficient recovery of Nd into liquid metals of Bi and Sn was achieved in molten LiCl-KCl-NdCl3 electrolyte at 773-973 K by leveraging the strong interactions of Nd. Both liquid metals demonstrated high round-trip coulombic efficiencies (>99.3%) during deposition-removal cycles of 10-50 mA cm-2 and high recovery capacity up to approximately 20 mol% Nd beyond the solubility limit. In addition, high recovery yield (84--90%) was confirmed based on chemical analysis of electrolysis products in Bi after constant current electrolysis (--50 mA cm-2) at 873-973 K. Overpotentials during the Nd deposition process were attributed to charge-transfer and mass-transport resistances by the current-potential curve and electrochemical impedance spectroscopy. The charge-transfer kinetics of Nd deposition into liquid metals was facile with high exchange current densities at ~220 mA cm-2. Due to the importance of permanent NdFeB magnet alloys for renewable energy technologies, the thermodynamic properties of binary Nd-Fe alloys with varying mole fractions of Nd (xNd = 0.05-0.78) were investigated via electromotive force measurements in molten chloride at 773--1073 K. The Nd-Fe alloys were heat-treated at 923 K for 7 days to stabilize equilibrium phases and then the measured emf values were consistent between alloy compositions, as shown by equivalent thermal trajectories in distinct two-phase regions of [Fe + Nd2Fe17], [Nd2Fe17 + Nd5Fe17], [Nd5Fe17 + Nd], [L + Nd2Fe17], and [L + Nd5Fe17]. The measured emf results were further validated using open-circuit potentiometry in which Nd was deposited onto a Fe electrode at 973 K, resulting in a difference of less than 18 mV for the identical two-phase alloy between the two methods. It is believed that the data are crucial in developing electrolytic processes for rare-earth alloys (e.g., Nd-Fe) and in materials simulation for reliable prediction of rare-earth alloys and compounds.

Download or read book Molten Salt Electrolysis in Metal Production written by Institution of Mining and Metallurgy (Great Britain) and published by . This book was released on 1977 with total page 90 pages. Available in PDF, EPUB and Kindle. Book excerpt: