Process for changing anodes in an electrolytic aluminum production cell including adjustment of the position of the anode and device for implementing the process
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United States of America Patent
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Sep 9, 2008
Grant Date -
Mar 9, 2006
app pub date -
Aug 26, 2005
filing date -
Sep 8, 2004
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A process for changing an anode of a cell for the production of aluminum by fused bath electrolysis including a plurality of anodes. According to the invention, an anode handling tool is used including a positioning device, a gripping device and a sensor detecting the vertical position of the gripping device, and the position sensor is used to measure the vertical distances traveled by the gripping device with respect to a reference level N. At least one sound or electromagnetic waves beam is then produced in a determined reference line or plane and the passage of the anode in the beam is used to measure the distances. The vertical position of the replacement anode in the cell is determined starting from the values obtained for the traveled distances and the replacement anode is put into this position in the place initially occupied by the spent anode.
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