Infrared Slag Detection

The ITEMA Infrared Slag Detection System is designed to detect the transition from steel to slag in the open streams of Basic Oxygen Furnaces, Electric Arc Furnaces and Torpedo cars.

The system utilizes a state-of-the-art infrared camera to image the desired stream.  The output of the camera is fed into a computer running ITEMA's proprietary stream analysis software. 

ITEMA Block Diagram

The software generates a false color image of the stream to aid in visual slag detection.  In addition the software is continuously analyzing the stream and gives a real-time indication of slag content.  Slag warnings and slag alarms are generated based on previously determined thresholds.  This information is fed to a operator control panel that contains an LCD monitor.

ITEMA Presentation Screen with No Slag Present

ITEMA Presentation Screen with Full Slag Present

The following information is presented in the screen shots above:

1. The bar graph along the left side of the screen indicates the percentage of slag in the stream

2. The image in the center of the screen is a false color real-time image of the tapping screen (Green indicates slag)

3. The box of the upper right of the screen is the slag status annunciator  It indicates the state of the system and will show slag warnings and alarms.

4. The box below this on the right side is the system event log.  Systems events and times the events occurred are recorded here.  This events are also recorded in an tapping log file on the hard disk.

5. The strip chart along the bottom of the screen records the percentage of slag in the stream during the entire tap.

Click on the above image to view a short video of a BOF tapping

The GREEN color indicates slag

Note: File may take a long time to download with a dial-up connection (4.7MB)

Click here to request additional Information

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