Overview
The Slag Detection System has been developed using Land's expert knowledge of the application and over 60 years of experience in the steel industry to monitor and aid control of slag carry-over from one process to another.
The Slag Detection System is specially designed to withstand the harsh conditions of continuous operation in the steel plant, with a minimum maintenance requirement. The industrial thermal imaging sensor is housed in a rugged, water-cooled and air purged enclosure, continuously viewing the tapping area. As the tap commences, the dedicated software automatically begins to record the tap as well as producing a data log and graph of the relevant steel/slag data.
When the level of slag reaches the pre-determined level and alarm is generated (see above) to stop the tap. The recording will end and the files saved by tap number. Full access of the tapping data is available to the operator for quality control purposes.
Specification
| Temperatures | |||
|---|---|---|---|
| Low Temperature (C): | 600 | High Temperature (C): | 2000 |
| Low Temperature (F): | 1112 | High Temperature (F): | 3632 |
| Technical Details |
|---|
| Image Processing System | |
|---|---|
| Slag detection: | Alarm activation when a preset percentage of either slag or steel detected within defined window |
| User Display: | Front page information display, plant logo and identifier |
|
Frame rate: |
30 frames/sec. |
| Automatic functions: | Auto tap detection, steel/slag ratio, video file, log file of all data, steel/slag percentage graph, all saved as tap number |
| Languages: | User defined |
| Outputs: | Digital output card, DDE, OLE, Ethernet and OPC Options |
| Sensor Supply Unit | |
| Functions: | Local connection interface between imaging sensor and image processing system |
| Ethernet/Fibreoptic Cables: | Supplied by the customer |
|
Enclosure |
|
| Service: | Water, air, power input, communications, video, located to the rear of the enclosure |
| Added Protection: | Sacrificial plate protects the main enclosure from direct impact |
| Sighting Tube: | Design significantly reduces the risk of direct impact of liquid steel against the field replaceable sapphire window |
| Air bleed: | Provides positive pressure within the enclosure |
| Environmental rating: | IP65 |
| Thermal Imaging Sensor | |
| Temperature measurement range: | 600 to 2000 °C |
| Thermal image resolution: | 384 x 288 pixels |
| Detector: | Microbolometer, focal plane array |
| Wavelength: | 3.9 µm |
| Field of View: | 7.5° x 5.5° |
| Motorised focusing range: | 4m to infinity |
| Options: Blower unit, setup monitor, sensor carry case |
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