ISIJ International
Online ISSN : 1347-5460
Print ISSN : 0915-1559
ISSN-L : 0915-1559
Fundamentals of High Temperature Processes
A New Design of Oxygen Sensor for Electromotive Force Measurement and Electrochemical Deoxidation by Using Oxygen Pump
Jiajun LiYoshinao Kobayashi
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2020 Volume 60 Issue 6 Pages 1135-1140

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Abstract

Electromotive force measurement (EMF method) has developed for many decades. It provides a universal approach to measure quantities such as oxygen partial pressure and activity coefficient of metals. Here we present a new design of oxygen sensor, aiming to avoid complications and inaccuracies which are caused by the effect of extra metallic lead wires. Hereafter, we focus on the development of a cleaner electrochemical deoxidation technology by using the newly developed apparatus. The EMF experiments demonstrate a favorable agreement with previous literature, and the electrochemical deoxidation experiments show remarkable results of oxygen contents reducing. All of these results pinpoint the feasibility of the newly developed apparatus. Based on these positive results, we discuss a possible application of this study in the steelmaking process, illustrating a high potential of a further and ultimate deoxidation by a cheaper and cleaner approach.

Idea of oxygen pump application in the steelmaking process. Fullsize Image
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© 2020 by The Iron and Steel Institute of Japan
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