Manufacture of a Soderberg electrode incorporating a high carbon

Details Manufacture of a Soderberg electrode incorporating a high carbon Manufacture of a Soderberg electrode incorporating a high carbon

1988-10-03

1990-01-30

Niebling, John F.

Chemistry: electrical and wave energy

Apparatus

Electrolytic

204 61, 204 67, 373 89, 373 93, 264 291, 264105, 252511, 523220, 524 59, 524495, 524540, C25C 702

Patent

active

048971707

ABSTRACT:
The invention is a novel Soderberg electrode paste composition. The composition is a mixture comprising carbonaceous aggregate, novolac resin binder, plasticizer and optionally hexamethylenetetramine. The novolac resin of the binder has a melting point of at least 100.degree. C. and a free phenol content of not more than 4% by weight based on the weight of novolac resin solids. The residual coking value of the composition of the invention is at least as great as the minimum preferred coking value of traditional Soderberg pastes which are based on coal tar pitch binder.

REFERENCES:
patent: 3434834 (1982-03-01), Akerberg et al.
patent: 3838188 (1974-09-01), Farrell, Jr.
patent: 3969124 (1976-07-01), Stewart
patent: 4430459 (1984-02-01), Ackerberg et al.
patent: 4479913 (1984-10-01), Ackerberg et al.
patent: 4526924 (1985-07-01), Korb et al.
patent: 4624984 (1986-11-01), Korb et al.
patent: 4775455 (1988-10-01), Chandramouli et al.
"Carbon Products", Carboindustrial, S.A. brochure.

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