METHOD OF MEASURING, ON THE FLY, THE HEIGHT OF AN ELECTROLYSIS ANODE
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United States of America Patent
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Issued Date -
Jul 8, 2010
app pub date -
Jun 1, 2007
filing date -
Jun 9, 2006
priority date (Note) -
Abandoned
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Abstract
An on-the-fly method for measuring the length, along an axis (z'z) of an anode (20) used in the production of aluminium by molten salt electrolysis in which: i) said anode is suspended from a gripping member (13a) which is fitted with a displacement sensor measuring the vertical position of the point of attachment (O); ii) said gripping member is moved vertically so that the lower surface (21a) of the anode passes through a plane (P) formed by n beams (f.sub.1, . . . , f.sub.i, . . . , f.sub.n) and, each time one of said beams i (i=1 to n) is disturbed by the lower surface of the anode passing through it, the vertical position h.sub.i of said point of attachment (O) is measured; iii) the angle of inclination zz' of the anode stem is measured and the distance between the point of attachment and the lower surface (21a) of the anode block (21) is deduced based on values measured h.sub.i (i=1 to n), and the inclination value of the anode stem.
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