CATHODE CARBON BLOCK FOR ALUMINUM SMELTING PURPOSES, AND PROCESS FOR PRODUCTION THEREOF

WIPO Patent Application WO/2011/121998

A1

Disclosed are: a cathode carbon block for aluminum smelting purposes, which has low specific electric resistivity and high heat conductivity; and a process for producing the cathode carbon block, both of which are developed for the purpose of improving the energy efficiency in an aluminum electric furnace. Specifically disclosed are: a cathode carbon block for aluminum smelting purposes, which has improved wettability for an aluminum melt, enables the reduction in the rate of electrochemical invasion by an electrolytic bath and can have a prolonged service life; and a process for producing the cathode carbon block. In a mixing step, a carbon raw material and titanium carbide are mixed with each other at a mixing ratio of (64 to 97%):(3 to 36%), wherein the content ratio of titanium carbide is 5 to 100% in a portion of the mixed raw material which has a particle diameter of 1 mm or less. In a kneading/molding step, an organic binder is added to a mixture produced through the mixing step and the resulting mixture is kneaded and molded. In a calcination step, the molded product is calcined. In a graphitization step, a calcined product produced through the calcination step is graphitized at 2400 to 3000˚C.

TODA SHINJIRO (JP)
ISHIKAWA AKIFUMI (JP)

PCT/JP2011/001861

October 06, 2011

March 29, 2011

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NIPPON ELECTRODE CO LTD (JP)
TODA SHINJIRO (JP)
ISHIKAWA AKIFUMI (JP)

C25C3/08; C01B31/04; C01B31/30; C04B35/52

US3400061A	1968-09-03
JPS59501671A	1984-10-04
JPS61501456A	1986-07-17
JPS52119615A	1977-10-07
US3028324A	1962-04-03
US3400061A	1968-09-03
JP2001518978A	2001-10-16

See also references of EP 2554715A4

KIUCHI, MITSUHARU (JP)
Mitsuharu Kiuchi (JP)

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