Process for converting carbon blanks into graphite electrodes

Details Process for converting carbon blanks into graphite electrodes Process for converting carbon blanks into graphite electrodes

1989-07-18

1990-07-17

Thurlow, Jeffery

Plastic and nonmetallic article shaping or treating: processes

Carbonizing to form article

Agglomeration or accretion

264 296, 264 297, 264 85, 264105, 264162, 264294, 264296, 2642979, 264348, 264DIG65, 423448, 4251746, 425445, C01B 3104

Patent

active

049420020

ABSTRACT:
Cylindrical carbon blanks are assembled into one or more upright stacks which are advanced stepwise in an upward direction in one or more upright tubes which insulate the column or columns from the surrounding atmosphere. The blanks in the upright tube or tubes are preheated by exchanging heat with an inert gas, such as pure argon, and the preheated blanks are thereupon conveyed along one or more horizontal path sections into the upper end of an additional tube wherein the blanks are heated to graphitizing temperature by a series of electrode pairs. The thus obtained graphite electrodes are cooled by inert gas which is thereupon admitted into the upright tube or tubes to preheat fresh carbon blanks.

REFERENCES:
patent: 1456495 (1923-05-01), Sieurin
patent: 1884600 (1932-10-01), Derby
patent: 2983022 (1961-05-01), Dressler et al.
patent: 3009863 (1961-11-01), Angevine
patent: 4015068 (1977-03-01), Vohler

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