Cathode
AssigneeNoranda Inc.
InventorsEduardo Del Rincon, Nosrat Benhood
Life of this patent
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Abstract
An improvement to a cathode used in an electrorefining or electrowinning of copper. The cathode has a solid copper head bar with a horizontal groove on its undersurface. The upper edge of a stainless steel flat sheet has several holes along its width and is vertically inserted into the groove. The stainless steel sheet is then mechanically attached to the copper head bar by pressing the copper head bar against the stainless steel at the perforated points along the head bar. To increase the joint strength, the stainless steel sheet may be welded to the copper head bar at its upper edges at the underside of the head bar.
Claims30
An electrolytic copper refining cathode comprising:
- a copper head bar having a horizontal groove on an undersurface;
- and
- a stainless steel sheet having a plurality of holes at an upper end thereof, the upper end of said sheet being disposed in the horizontal groove of said copper head bar and copper from said copper head bar being disposed inside the plurality of holes at the upper end of said sheet to form a mechanical bond between said copper head bar and said sheet.
A method for making a cathode comprising the steps of:
- inserting a stainless steel sheet, said sheet comprising a plurality of holes at an upper end thereof, into a copper head bar by placing the upper end of said sheet into a horizontal groove located on an undersurface of said copper head bar;
- pressing said copper head bar against said sheet to cause copper from said copper head bar to flow into the plurality of holes at the upper end of said sheet causing a mechanical bond between said copper head bar and said sheet.
A method for making a cathode comprising the steps of:
- forming a plurality of holes at an upper end of a stainless steel sheet;
- forming a horizontal groove in an undersurface of a copper head bar;
- inserting the upper end of said sheet into the horizontal groove of said copper head bar;
- and
- localized pressing of said copper head bar at locations that correspond to the locations of the plurality of holes in said sheet.
Dependencies are inferred from the claim text.