SLAG DETECTION SYSTEM - SDS-E

The definitive infrared thermal imaging system for steel slag monitoring When liquid steel is tapped from a basic oxygen or electric arc furnace, it is advantageous to minimise the quantity of slag carried over into the ladle. Previously this has been done by visual observation of the tapping stream or by the use of electromagnetic induction coils mounted onto the furnace. However, neither of these methods has proved to be entirely reliable. The new LAND thermal imaging Slag Detection System SDS has been developed using LAND?s expert knowledge of the application and over 58 years of experience in the steel industry to monitor and aid control of slag carry-over from one process to another. The SDS system is specially designed to withstand the harsh conditions of continuous operation in the steel plant, with minimum maintenance required. 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 SDS Software automatically begins to record the tap as well as producing a data log and graph of the relevant steel/slag data. The difference in emissivity between the steel and slag results in slag displaying significantly higher apparent temperature than steel when seen by the thermal imager. When the level of the slag reaches the predetermined level an alarm is generated 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.

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