| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a probe for measuring the concentration of copper in a molten metal capable of rapidly and precisely measuring the concentration of copper in the molten metal on the way of refining, especially the activity of Cu in molten iron in the steel scrap refining process and capable of eliminating waste such that a high grade scrap is charged in a necessary amount or above to dilute the molten metal. <P>SOLUTION: A sub-electrode 23 comprising copper oxide is provided on the outer surface of a solid electrolyte pipe 13 having oxygen ion conductivity and a cover (quarts cap 5) for covering the solid electrolyte pipe 13 is provided to the outside of the sub-electrode 23 to constitute a standard electrode element (sensor element 3) forming a pair along with a counter electrode (acting electrode 25). Local equilibrium is established between copper in the molten metal, oxygen and the copper oxide that constitutes the sub-electrode and the activity of oxygen in the local equilibrium is measured to measure the activity of copper in the molten metal. <P>COPYRIGHT: (C)2009,JPO&INPIT |
