Preparation of Metallic Calcium by Electrolysis of Calcium Oxide Dissolved in Molten Calcium Chloride

Threadgill, W. D.

doi:10.1149/1.2426015

Cited by 5 publications

(2 citation statements)

References 8 publications

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“…The main electrolyte component in the electrolytic production of calcium is calcium chloride CaCl2 (melting point 772°C [1][2][3]), to which KCl [32,33], CaF2 [34,35] or NaCl [36,37] is added to reduce process temperature, decrease in calcium solubility, increase in electrical conductivity, and modify other properties. The position of calcium in the electrochemical series of voltages of the elements necessitates the use of high purity CaCl2 during electrolysis, which can be obtained in the following ways [1][2][3]:…”

Section: Preparation Of Cacl2mentioning

confidence: 99%

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High-temperature electrochemistry of calcium

Zaikov

Batukhtin

Шуров

et al. 2022

EM&T

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Electrolytically produced calcium is one of the most demanded materials in obtaining pure materials. At the same time, the existing technologies and devices for the electrolytic production of calcium were developed in the last century, and at present there are practically no works aimed at optimizing them. However, increasing the capacity and efficiency of existing devices for the production of calcium is in demand. To analyze possible ways to improve calcium production, a comprehensive understanding of the processes occurring at the electrodes and in the electrolyte during electrolytic production of calcium is required. This review briefly outlines the main points concerning the electrolytic production of calcium: from a brief history of the development of methods for the electrolytic production of calcium and established ideas about its physicochemical processes to information about new developments using the electrolysis of CaCl2-based melts. Review content: brief history of process development; base electrolyte for calcium production, including preparation of CaCl2 and influence of additions on it physicochemical properties; data on calcium solubility in CaCl2; information about alternative electrolytes for calcium production; short description of electrode processes in the CaCl2-based melts; proposed technologies and devices for the electrolytic production of calcium.

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Section: Preparation Of Cacl2mentioning

confidence: 99%

“…As noted above, binary and multicomponent mixtures of CaCl2 with chlorides of alkali and alkaline earth metals are potential electrolytes for calcium production [32][33][34][35][36][37][58][59][60]. When studying the solubility of CaO in such systems, the following regularities were revealed:…”

Section: Chloride Electrolytesmentioning

confidence: 99%