Oxygen Measurement Probe
1, Steel mills throughout the whole country
2, Affiliated companies of steel mills
3, Foreign trade companies with customer resources
Foreword: the oxygen in molten steel has a significant critical
impact on the quality of molten steel, yield, and consumption rate
and ferroalloy. As the production scale of rimmed steel, balanced
steel, continuously cast steel with aluminium deoxidation and the
external refining technology of molten steel are widely used, it is
urgent to calculate the oxygen content in molten steel in a fast,
accurate and direct way, so as to control steelmaking operations,
improve quality, and reduce consumption.
To meet the above production requirement, oxygen probe is designed
as a kind of metallurgy detection probe of measuring the oxygen
content in molten steel and the temperature of molten steel.
Used for LF, RH and other refining stations, oxygen probes measure
oxygen activity arriving at the stations and in the treating
process, which can guarantee the deoxidizer addition, shorten the
refining time, help develop new varieties, improve technology, and
promote steel purity.
2,Main Features and Range of Application
Oxygen probe has two types: high oxygen probe and low oxygen probe.
The former is used to measure the temperature and high oxygen
content of molten steel in converter, electric furnace, refining
furnace. The later is used to measure the temperature and high
oxygen content of molten steel in LF, RH, DH, tundish, etc.
"Solid dielectric concentration cell oxygen-content test
technology" was applied in oxygen probe, which allows to measure
the temperature and oxygen content of molten steel at the same
time. Oxygen probe consists of half-cell and thermocouple.
Solid dielectric concentration cell oxygen-content test is composed
of two half-cells. wherein one is known reference cell of oxygen
partial pressure, and the other is the molten steel. The two
half-cells are connected by oxygen ions solid electrolyte, forming
an oxygen concentration cell. Oxygen content can be calculated from
the measured oxygen potential and temperature.
1) The oxygen activity of the molten steel can be measured directly
and rapidly, which is helpful to determine the amount of the
deoxidizing agent, and change the operation of the deoxygenation
2) The oxygen probe is easy to operate. Measurement results can be
obtained just 5-10s after inserting it into the molten steel.
ⅢMain Technical Indicators:
1, Measuring Range
Temperature range: 1200 ℃ ~ 1750 ℃
Oxygen potential: -200 ~~ + 350mV
Oxygen activity: 1 ~ 1000ppm
2, Measurement Accuracy
Oxygen battery reproducibility: Steel LOX activity ≥20ppm, the
error is ± 10% ppm
Steel LOX activity < 20ppm, the error is ± 1.5ppm
Thermocouple accuracy: 1554 ℃, ± 5 ℃
3, Response Time
Oxygen cell 6 ~ 8s
Thermocouple 2 ~ 5s
Whole respond time 10 ~ 12s
4, Efficiency of Measurement
hyperoxia type ≥95%; hypoxia type ≥95%
● appearance and structure
● supporting instruments
1 KZ-300A Microcomputer meter of temperature, oxygen and carbon
2 KZ-300D Microcomputer meter of temperature, oxygen and carbon
● Ordering Information
1, Please specify a model
2, Length of paper tube is 1.2m, which can also be customized
according to user need
3, Length of lances are 3m, 3.5m, 4m, 4.5m, 5m, 5.5m, which match
with user’s need.