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ORGANIZER;CN=ESTAD 2023:mailto:info@metec-estad.com
LOCATION:Room 17a
SUMMARY:Danieli Corus BOF revamping technology: Highlights and recent developments in converter design
DESCRIPTION:Since the startup of Danieli Converter Technology in 2011, several BOF revamping projects have been realized and converters have been successfully brought in operation.
Beside to keep the costs to a minimum, the most important tasks for revamping projects are:
•	Enlarge the inner volume but reuse as much as possible existing equipment
•	Maximize the lifetime of the converter vessel
•	Shorten the delivery time by keeping the quality level
•	Keep the shut down time during erection to a minimum

Some recent examples which fulfill these requirements are presented.
Additionally two special topics are brought under attention:
•	Revamping a converter by reusing an existing trunnion ring
•	Developing a measurement system for online monitoring the vessel shell temperature as well as its deformation

The reusing of an existing trunnion ring is not a regular case but sometimes this could give added value for steel plants. Such approach has been successfully applied for a 160 t BOF in the Ukraine and will be realized for 2 x 65 t BOF in India. To serve this purpose, Danieli Corus developed a special technique which avoids high demanding welding as well as machining on site. 
For the measurement of the vessel temperature, Danieli Corus has already such sensors successfully installed in converter plants. For the next generation, Danieli Corus further developed this sensor.
The most challenging topic is, to create a sensor which can operate at ambient temperatures of more than 250° C, which means, that consequently any electronic equipment cannot be applied.
The solution was found by using proven techniques from the prior century when electronics did not even exist. This new sensor is basically a combination of a mechanical part, which enlarges the vessel deformation by a factor 5 or more and an electric resistance which transforms the mechanical distance into an electrical signal.
CLASS:PUBLIC
DTSTART:20230615T121000
DTEND:20230615T123000
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