LAG-S400 Infrared Converter Slag Detection System

LAG-S400 Infrared Converter Slag Detection System


Overview

The infrared converter slag detection system uses a far-infrared thermal
imager to monitor the situation of converter tapping in real time, and is
connected to the main control computer in the electrical room through the
conversion and transmission of video signals. The radiation intensity in the
infrared wavelength range of 7-14um is different to distinguish molten steel
and slag. In the later stage of the converter tapping, the molten steel
gradually decreases, and the steelmaking slag is involved in the molten
steel and flows out of the tapping hole. After the thermal imager recognizes
the steelmaking slag in the imaging temperature measurement, it will give an
alarm according to the slag content ratio threshold set by the software. The
thermal imager will start the slide plate to close the tapping hole, so as
to realize the control of the slag in the converter tapping, and ensure the
maximum yield of molten steel and the minimum control of the steelmaking
slag content.

The effect of slag detection in converter tapping is of great significance
to the control effect of the slag amount. The converter slag detection and
control system developed by our company conducts non-contact monitoring of
the tapping steel flow through the far-infrared detector thermal imager. It
can detect the slag condition in real time and output an alarm signal and
control system, which can replace manual visual inspection and provide
accurate, efficient and stable slag detection effect. When the system finds
the slag, the intelligent control unit quickly makes a judgment of lifting
the furnace and blocking the slag and outputs an alarm signal.

As shown in Figure 1, the system includes thermal imager, front purge
protection box, front electrical box, power distribution cabinet, main
control monitor, monitor of rocking furnace chamber, sound and light alarm,
infrared converter slag monitoring software system, etc.



The features of thermal imager

1. The temperature measurement range is -20°C - 2000°C, high temperature
measurement accuracy, and multiple temperature measurement intervals can be
set.

2. High-resolution thermal imaging system, the imaging picture is clear, and
the imaging color can be freely marked according to the set temperature.

3. With hot zone alarm function, the alarm zone and temperature range can be
set arbitrarily.

4. With hot zone tracking function

5. Equipped with special 7~14um infrared filter lens



The technical parameters

1. Temperature measurement range: 200-1800℃

2. Temperature measurement accuracy: 2%

3. Detection accuracy and alarm accuracy: ≥98%

4. Resolution: ≥ 0.5℃

5. Pixels: 640x240

6. Band: 7~14um

7. Field of view: 7.5°×5.5°

8. Frame rate: ≥ 25 frames/sec

9. Equipment service life: ≥5 years

10. The normal operation rate of the automatic control system: ≥99%

Minimum Order: 1 pieces

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