METHOD AND DEVICE FOR MEASURING OXYGEN CONCENTRATION IN SINTERED LAYER

Japanese Patent JP2015196887

A

PROBLEM TO BE SOLVED: To provide an inexpensive method and device for accurately measuring the temperature change during temperature rising at a heating rate of about 20[°C/s] at the most to a temperature of about 1200 to 1450[°C], and measuring the oxygen concentration from moment to moment while withstanding the melting and solidification reaction of a sintered ore at a high temperature of about 1200 to 1450[°C] during temperature lowering.SOLUTION: The method for measuring the oxygen concentration in a sintered layer includes the steps of: furnishing with a first oxygen concentration cell group having an oxygen concentration cell with an outer diameter of 3 mm or less and a thermocouple; furnishing with a second oxygen concentration cell group having an oxygen concentration cell with an outer diameter of 8 to 5 mm and a thermocouple; furnishing the first oxygen concentration cell group and the second oxygen concentration cell in a sintered layer; measuring the oxygen concentration and the temperature by the first oxygen concentration cell group during temperature rising and by the second oxygen concentration cell group during temperature lowering; and combining the measurement results during temperature rising and during temperature lowering.

TERAKAWA YOKO
ORIMOTO TAKASHI

JP2014076195A

November 09, 2015

April 02, 2014

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NIPPON STEEL & SUMITOMO METAL CORP

C22B1/20; F27B21/14; G01N27/409

JPH09288082A	1997-11-04
JPS5069179U	1975-06-19
JPS5098777U	1975-08-16
JPS5459196A	1979-05-12
JPS4880090A	1973-10-26

Masatake Shiga
Mitsuo Teramoto
Sumio Tanai
Tomoo Katsumata
Hiroshi Yamaguchi
Katori Hideo
Hisataka Tanaka
Shunta Naito

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