Scraper for a Device for Breaking Bath Crust in an Electrolytic Cell Intended for Aluminium Production
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United States of America Patent
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Issued Date -
Oct 25, 2007
app pub date -
Jun 22, 2005
filing date -
Jun 25, 2004
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
The invention relates to a scraper (40) for a crust breaking member (33) such as a crust breaker, useable to form an opening in an alumina and solidified bath crust in a fused bath electrolytic cell by a back and forth motion of the said member along a translation axis T. The scraper (40) according to the invention comprises a plurality of fingers (42) arranged around a reference axis S intended to coincide with the said translation axis T during use, so as to leave a space (44) between the fingers and the crust breaking member, and each finger (42) comprises at least one scraping member (43) projecting towards the crust breaking member (33). The scraper according to the invention is used to prevent the formation of an envelope on the surface of the crust-breaking member that can block the member in the scraper.
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