Determination of the degree of oxidation of molten copper using an electrochemical cell

J. Alberto Vázquez, Antonio S. Romero, Mario A. García, Samuel L. González, Jorge O. Araujo

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

A sensor employing yttria-stabilized zirconia (YSZ) was used to determine the oxygen activity of molten copper at laboratory scale at temperatures of 1200° and 1300°C. The reference electrode was a Ni-NiO mixture. The amount of the deoxidizing agent (Cu3P) ranged from 1 to 3% of the mass of copper. Thermodynamic analysis of the Cu-O-P liquid system was carried out to predict the required deoxidizing agent and the final composition of the molten copper. Both results, calculated and experimental, show that the oxygen removal is more efficient at lower temperatures. The kinetics of the deoxidizing reaction is very fast in the first minutes of the treatment. A metalography analysis of rapid cooled samples show the oxygen and phosphorus distribution.

Original languageEnglish
Title of host publicationYazawa International Symposium
Subtitle of host publicationMetallurgical and Materials Processing: Principles and Techologies; Materials Processing Fundamentals and New Technologies
EditorsF. Kongoli, K. Itagaki, C. Yamauchi, H.Y. Sohn, F. Kongoli, K. Itagaki, C. Yamauchi, H.Y. Sohn
Pages187-196
Number of pages10
StatePublished - 2003
Externally publishedYes
EventYazawa International Symposium: Metallurgical and Materials Processing: Principles and Technologies; Materials Processing Fundamentals and New Technologies - San Diego, CA, United States
Duration: 2 Mar 20036 Mar 2003

Publication series

NameYazawa International Symposium: Metallurgical and Materials Processing: Principles and Techologies; Materials Processing Fundamentals and New Technologies
Volume1

Conference

ConferenceYazawa International Symposium: Metallurgical and Materials Processing: Principles and Technologies; Materials Processing Fundamentals and New Technologies
Country/TerritoryUnited States
CitySan Diego, CA
Period2/03/036/03/03

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