Process of making carbon electrodes

Details Process of making carbon electrodes Process of making carbon electrodes

C - Chemistry, Metallurgy

04

B

C04B 35/83 (2006.01) B29C 47/36 (2006.01) C01B 31/04 (2006.01) C04B 35/52 (2006.01) C04B 35/532 (2006.01) C25B 11/12 (2006.01)

Patent

CA 2494162

A process for preparing carbon electrodes is presented. In particular, a process for preparing carbon electrodes including the steps of combining calcined coke, a liquid pitch binder and carbon fibers derived from mesophase pitch to form an electrodestock blend; extruding the electrodestock blend to form a green electrodestock; backing the green stock to form a carbonized electrodestock; and graphitizing the carbonized stock by maintaining the carbonized stock at a temperature of at least about 2500° C. for no more than about 18 hours is presented. The electrodes prepared by the inventive process are also presented.

La présente invention concerne un processus de préparation d'électrodes en carbone. Cette invention concerne, en particulier, un processus de préparation d'électrodes en carbone, qui consiste à combiner du coke calciné, un liant de poix liquide et des fibres de carbone dérivées de poix mésophase de façon à former un mélange de matière à électrode, à extruder ce mélange de matière à électrode de façon à former une matière à électrode brute, à cuire cette matière brute de façon à former une matière à électrode carbonisée et, à graphiter cette matière carbonisée en maintenant cette matière carbonisée à une température au moins égale à 2500 degrés Celsius pendant au moins 18 heures environ. Cette invention concerne aussi les électrodes préparées par ce processus.

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