Includes bibliographical references.
|Contributions||Institution of Mining and Metallurgy (Great Britain)|
|LC Classifications||TN681 .M64|
|The Physical Object|
|Pagination||vii, 73 p. :|
|Number of Pages||73|
|LC Control Number||78308637|
Certain elements of the middle part of the periodic table (columns IVB, VB, and VIB), devoted to transition metals, are so-called refractory metals because of their high fusion temperature (above 2, °C), which have relevant consequences in particular on their thermoelastic properties, microhardness, and a correlative industrial use as tools for metal working at high temperature [1, 2] and. Book Author(s): Alain Vignes. Search for more papers by this author Overview of molten salt electrolysis operations. Chloride electrolysis. Reduction of alumina by electrolysis. Electro‐reduction of metal oxides and deoxidation of metals by molten salt electrolysis. Bibliography. Extractive Metallurgy 3: Processing Operations and Routes Author: Alain Vignes. from book Green Electrochemistry (pp) Refractory Metal Production by Molten Salt Electrolysis. Chapter January This paper presents the results of molten salt electrolysis for the production of pure chromium metal starting from its carbide and aluminothermically reduced forms.
The world production of SOG-Si was estimated to be approximately million metric ton in SEG-Si is also produced chiefly by Siemens process, and its world production was estimated to be about million metric ton in Until now, silicon has not been practically produced by molten salt electrolysis. Electrolysis, molten salts, metal production. 1. Introduction. Many important metals are being produced by electrolysis, in aqueous electrolytes (Cu, Ni, Co and others) and molten salts (Al, Na and other reactive metals). Also industrial electrorefining processes have been established in aqueous electrolytes (Cu) and molten salts (Al). This study deals with research on the reduction process of neodymium oxide by molten salt electrowinning. Neodymium fluoride and lithium fluoride electrolyte were used for feed stock of electrolyte and neodymium oxide was added as precursor. Cell current was confirmed that cell potential was applied as constant potential of V. Moreover, the technical maturity of molten salt electrolysis, such as the successful industrial production of primary aluminum for more than million tons annually by molten salt electrolysis, also makes the scaling-up of electrochemical synthesis of ammonia in molten salt promising. Ammonia formation rate and energy consumption are the.
Abstract. Octahedral ionic species are known to exist in molten chloride mixtures containing rare earth as well as molten alkali metal chlorides containing UO 2 2 + ions. This phenomenon can be utilized in pyrochemical reprocessing of nuclear spent fuels (MOX codeposition) in which candidate molten salt solvent systems to stabilize UO 2 2 + and/or PuO 2 2 + ions were proposed to be molten CsCl. The purity of tantalum, hafnium and scandium metals obtained by electrolysis in molten salts is compared with literature data on the purity of these metals produced by other methods. The advantage of electrorefining in high temperature electrolytes for high purity rare metal production is shown. Molten salts have been used for many centuries in metal extraction, glass manufacture, and, more recently, in applications such as fused salt electrolysis. Usually dissociated into ions, they are often good solvents for oxides, carbides, nitrides, and metals. The alkali metals are so reactive that they cannot be displaced by other elements, and molten salt electrolysis is therefore an option for producing many of these metals. Sodium and lithium are the most important alkali metals produced by electrolysis, while magnesium and calcium are the most important alkaline earth metals produced by electrolysis.