There Are Several Methods For Preparing Rare Earth Alloys By Molten Salt Electrolysis
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- There Are Several Methods For Preparing Rare Earth Alloys By Molten Salt Electrolysis
is a pure molten salt or a mixture of molten salts, known as molten salt electrolysis. Molten salt electrolysis is widely used for electrometallurgy, such as electrolytic reduction of metalli c
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Molten salt electrolysis methods can be categorized into two groups: the first involves dissolving metal-containing compounds in molten salt to generate ions that migrate to the cathode under the influence of concentration gradient, convectional and migrational force [22], [23], [24], where they acquire electrons to form metals at the cathode ...
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The sub-molten salt method can realize the efficient recovery of valuable components form minerals under atmospheric pressure at relatively low temperature. 15 This method has higher reaction efficiency in the extraction and refining of chromium, vanadium, aluminum, titanium and other valuable metals. 16 In terms of vanadium extraction from …
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Fused salt electrolysis is appropriate for the preparation of low melting rare earth metals. Electrolysis methods that are often limited to <1100°C are impractical for preparing terbium metal due ...
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diaphragm surface to form rare earth alloys. Third, the target rare earth metal diffuses onto the surface of the cathode space through the alloy diaphragm and then dissolves into the mol-ten salt as RE ion. Last, the target element is recovered as a rare earth metal or alloy on the cathode.
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With the increasing demand of rare earth metals in functional materials, recovery of rare earth elements (REEs) from secondary resources has become important for the green economy transition. Molten salt electrolysis has the advantages of low water consumption and low hazardous waste during REE recovery. This review systematically summarizes the separation …
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The molten salt electrolysis method includes rare earth fluoride (REF 3-LiF-RE 2 O 3) and rare earth ... Borax roasting method is a new type of rare earth molten salt electrolysis slag treatment method, due to the low melting point of borax, its formation of the liquid phase can increase the contact area with the reactants, which in turn ...
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the process technology of preparing rare earth metals and alloys by electrolyzing rare earth oxides in fluoride systems. This article summarizes the effects of process parameters such as cathode and
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However, while producing RE metals or alloys by molten-salt electrolysis, the REE recovery rate is usually <95%, ... Development on molten salt electrolytic methods and technology for preparing rare earth metals and alloys in China. …
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The main production methods of rare earth metals are rare earth molten salt electrolysis and metallothermic reduction.15–19 In contrast to metallothermic reduction, the molten salt electrolysis method is more widely applied in the world due to its low cost, low energy intensity and continuous process.20 In rare earth molten salt electrolysis ...
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A method for preparing rare earth alloy by molten salt electrolysis, in the electrolysis process, valence-variable elements are introduced to participate in electrochemical reaction and form a compound (M) with carbon x C y ) Compound (M) x C y ) Carbon forms CO or CO at the anode 2 The gas escapes, and the cycle is repeated, so that the aim of reducing the carbon content in …
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The invention discloses a method for preparing a Dy-Fe alloy by electrolyzing an oxide molten salt. The method comprises the following steps of: adding a mixture of Dy2O3 and Fe2O3 into a fluoride molten salt electrolyte system; and electrolyzing to prepare the Dy-Fe alloy. In the invention, a tungsten rod is utilized as a cathode, and element Fe is obtained from …
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Rare earth alloys can be prepared through the methods of melting, metallothermic reduction, and molten salt electrolysis. Compared to the former two methods, the molten salt electrolysis …
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Download Citation | Thermodynamic Considerations in Molten Salt Electrolysis for Rare Earth Metals | Many applications utilize rare earths as a part of their essential composition, such as: Ni-MH ...
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Research Status of Electrolytic Preparation of Rare Earth. China s rare earth reserves and consumption are the highest in the world Rare earth metals and alloys play a pivotal role in the domains of permanent magnetic materials hydrogen storage materials luminescent materials abrasive materials etc The molten salt electrolysis process is the most widely used method for …
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MSE is the dominant method for the production of rare earth metals and alloys because of its lower temperature requirement (427–870℃), lower energy intensity, and …
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A gadolinium ferroalloy preparation method by molten salt electrolysis uses a graphite crucible as an electrolytic tank, a graphite plate as an anode, a pure pontil as a self-consumption cathode and an iron crucible as a gadolinium ferroalloy acceptor. Gadolinium oxide is added in a GdF3-Lif binary fluoride molten salt electrolyte system.
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Rare Earth Metals and Alloys by Electrolytic Methods. Article. Jan 2001; ... "Preparation of Molten Salt Electrolysis of Rare Earth Metals and Their Alloys Technology Progress." Chinese Journal of ...
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Rare earth alloys can be prepared through the methods of melting, metallothermic reduction, and molten salt electrolysis. Compared to the former two methods, the molten salt electrolysis method has several advantages: the production cost is lower, the composition of the rare earth alloys is uniform and easy control, and the quality of the rare earth alloys is good. The rare earth alloys …
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These methods are: direct reduction of rare earth oxides, reduction of anhydrous rare earth halides and molten salt electrolysis of rare earth chloride or oxide-fluoride mixtures.
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[Show full abstract] of rare earth elements in the molten salt was more than 99 mass% from the controlled potential electrolysis process, not accounting for the molten salt component. Rare earth ...
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Corpus ID: 139109294; Development on Molten Salt Electrolytic Methods and Technology for Preparing Rare Earth Metals and Alloys in China @inproceedings{Sining2011DevelopmentOM, title={Development on Molten Salt Electrolytic Methods and Technology for Preparing Rare Earth Metals and Alloys in China}, author={Pang Sining and Yang Shihong and Li Zongan and Chen …
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In order to the efficiently recover treatment of rare earth molten salt electrolytic slag, and to achieve the sustainable development of rare earth resources while meeting the quality requirements for rare earth metal products, reduce energy consumption, lower the production cost of REMs and protect the environment, it is urgent to solve the ...
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Rare-earth element is an important target for recycling in Japan. In our previous work, we demonstrated the selective leaching of rare-earth elements from waste neodymium magnets using chloride molten salt electrolysis. In this study, we investigated the electrodeposition of rare-earth elements using liquid metal as a cathode. The reduction …
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Currently, more than 90% of the world's rare earth metals (REMs) and alloys are produced by molten salt electrolysis, and a large amount of rare earth molten salt electrolytic slag is generated every year, which contains a high content …
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A molten salt electrolysis method based on a bipolar alloy diaphragm with a high separation efficiency for ... Nd ratios was investigated by preparing a molten CaCl 2 –CaF 2 (6. ... Oishi T, Konishi H, Nohira T, Tanaka M, Usui T. Separation and recovery of rare earth metals by molten salt electrolysis using alloy diaphragm. Kagaku Kogaku ...
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China as the dominant producer of REEs is currently supplying more than 80% of the total global demand (Chu and Majumdar, 2012; Hellman and Duncan, 2014).In seven provinces in southern China, production of rare earth elements from ion adsorption clays ores with 0.02–1% of rare earth oxides (REOs) is carried out via in-situ leaching using ion exchange …
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Molten salt electrolysis, as an overlapping part of thermal and electrochemical methods, has been widely developed in the field of separation and extraction of REEs.
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2.2. Molten salt electrochemical electrolysis Molten salt plays an important role as an electrolyte medi-um in electrochemistry. At present, most metals are extrac-ted from the minerals of crustal deposits. Primary metals are mainly extracted using mining, flotation, hydrometallurgy, and …
WhatsApp: +86 18221755073In this work, Nd 6 MoO 12, Ln 2 MoO 6 (Ln = La, Nd, Sm, Eu and Gd) and Sm 3+ /Eu 3+-doped Gd 2 MoO 6 ceramic materials were prepared by the molten salt synthesis method. High-throughput synthesis with a yield of 99% can be achieved within only a 5 h duration. Furthermore, the photocatalytic degradation of methylene blue () and luminescence …
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Compared to other spent fuel treatment methods, molten salt electrolysis technology has the following advantages: (1) This technology can process different types and short cooling periods of spent fuel. (2) The process is simple, the equipment structure is compact, the size of the device is small, and a closed cycle can be realized.
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A new process is proposed for separation and recovery of rare earth metals from wastes. This process utilizes molten salt electrolysis and an alloy diaphragm.
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With great ingenuity, electrolytic cells have been designed and methods developed for the preparation of high melting rare earth metals also in consolidated forms, using …
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Aluminum; magnesium; rare earth; alloy production; metallothermic reduction; molten salt; electrolysis 1. Introduction Aluminum and magnesium are classified as light metals (LM) because their specific gravities are relatively low (2.70 and 1.74, ... While several RE compounds could be added to make the alloy (e.g. oxides and halides), the most ...
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A method for preparing rare earth alloy by molten salt electrolysis, in the electrolysis process, valence-variable elements are introduced to participate in electrochemical reaction and form a compound (M) with carbon x C y ) Compound (M) x C y ) Carbon forms CO or CO at the anode 2 The gas escapes, and the cycle is repeated, so that the aim of reducing the carbon content in …
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The invention relates to a method for preparing a rare-earth dysprosium alloy by molten salt electrolysis. The method is characterized by comprising the following steps: adding a mixture of a rare earth oxide and a dysprosium oxide as an electrolytic material in a fluoride molten salt system to carry out electrolysis production, wherein the fluoride molten salt system adopts a ternary …
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