Graphite electrodes
AssigneeGrafTech International Holdings Inc.
InventorsPhilip Dennis Coleman, Michael Frastaci, Gregory E. Murray, Marco Napolitano, Aaron Tomasek, Brian Bowman, Daniel W. Krassowski
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Abstract
A graphite electrode exhibits oxidation resistance by modifying the outer radial surface characteristics. The outer radial surface may be modified by providing a textured portion which improves water flow while minimizing water absorbtion. Alternately, a layer of flexible graphite or plurality of particles of exfoliated graphite may be disposed on the outer radial surface of the electrode body.
Claims16
A graphite electrode comprising a body having an axial direction and a radial direction, the body having an outer radial surface and two ends;
- one or more slats disposed along the outer radial surface of the body;
- and
- a sheet of compressed particles exfoliated graphite adjacent the outer surface, a portion of the sheet of graphite disposed in the slats, the portion having a density of less than 0.5 g/cc.
A graphite electrode comprising a body having an axial direction and a radial direction, the body having an outer radial surface and two ends;
- one or more slats circumferential disposed along the outer radial surface of the body;
- and
- a sheet of compressed particles exfoliated graphite attached to the outer surface, a portion of the sheet of graphite disposed in the slats, the portion having a density of less than 0.5 g/cc.
A graphite electrode comprising a body having an axial direction and a radial direction, the body having an outer radial surface and two ends;
- and a sheet of compressed particles exfoliated graphite attached to the outer surface, at least a portion of the sheet of graphite having a density of less than 0.5 g/cc.
Dependencies are inferred from the claim text.