Apparatus for lifting graphite electrodes
AssigneeEXO Technologies LLC
InventorsMark Koenig, James J. Hansen, Jr.
Life of this patent
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Abstract
A lifting adaptor configured to lift a graphite electrode includes a main body having a threaded end to secure the lifting adaptor to threads of the graphite electrode, and a lifting component coupled to the main body opposite the threaded end to lift the graphite electrode. The threaded end of the main body may comprise a non-graphite material with a coefficient of thermal expansion (CTE) similar to Invar, within +/−0 to 1 (μm/(m K)) over a range from room temperature to 400 degrees Fahrenheit.
Claims23
A lifting adaptor configured to lift a graphite electrode, the lifting adaptor comprising:
- a main body having a threaded end to secure the lifting adaptor to threads of the graphite electrode;
- and
- a lifting component coupled to the main body opposite the threaded end to lift the graphite electrode;
- wherein the threaded end of the main body comprises a non-graphite material with a coefficient of thermal expansion (CTE) similar to Invar, within +/−0 to 1 (μm/(m K)) over a range from room temperature to 400 degrees Fahrenheit.
A lift plug for lifting a graphite electrode comprising:
- a main body;
- a threaded connection fixed at a first end of the main body and mateable with threads of the graphite electrode, the threaded connection comprising a non-graphite material;
- and
- a coupling attached to a second end of the main body opposite the first end for lifting the graphite electrode;
- wherein the non-graphite material has a coefficient of thermal expansion (CTE) of less than 3 (μm/(m K)) at room temperature.
A lift plug for lifting a graphite column of an electric furnace, the lift plug comprising:
- a plug having a tapered end comprising threads, and
- a lifting handle coupled to the plug opposite the tapered end,
- wherein the threads of the tapered end comprise a non-graphite material with a coefficient of thermal expansion (CTE) similar to graphite.
Dependencies are inferred from the claim text.