An electrometallurgical method for the production of calcium
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Authors
Lukasko, James J.
Issue Date
1989
Type
Thesis
Language
en_US
Keywords
Electrochemical Processes , Calcium Metal , Electrowinning , Electrorefining Operations , Calcium Chloride , Tin-calcium Alloy , Calcium , Electrometallurgical Method , Metallurgical engineering , Mackay Theses and Dissertations Grant Collection
Alternative Title
Abstract
An alternative electrochemical process for the production of calcium metal was developed. Other calcium production means are costly, complex, and inefficient. The method entailed an electrowinning step followed by an electrorefining operation. Calcium chloride was fed to the electrowinning cell with a potassium chloride-calcium chloriae eutectic electrolyte. The calcium was electrowon at 650 degrees Celsius into a molten tin cathode to 7. 5 weight percent calcium with 95 percent current efficiency. The resulting tin-calcium alloy served as the anode for the electrorefining cell which employed a calcium chloride-calcium fluoride fused salt as the electrolyte. Calcium metal was electrorefined at 850 degrees Celsius with a current efficiency of 85 percent. The recovered calcium metal analyzed 99.8 percent calcium, which is purer than commercial grades.
Description
Thesis Number: 2108.
Online access for this thesis was created in part with support from the Institute of Museum and Library Services (IMLS) administered by the Nevada State Library, Archives and Public Records through the Library Services and Technology Act (LSTA). To obtain a high quality image or document please contact the DeLaMare Library at https://unr.libanswers.com/ or call: 775-784-6945.
Online access for this thesis was created in part with support from the Institute of Museum and Library Services (IMLS) administered by the Nevada State Library, Archives and Public Records through the Library Services and Technology Act (LSTA). To obtain a high quality image or document please contact the DeLaMare Library at https://unr.libanswers.com/ or call: 775-784-6945.
Citation
Publisher
University of Nevada, Reno
License
In Copyright(All Rights Reserved)