Process for removing extractable substances from carbon black

Details Process for removing extractable substances from carbon black Process for removing extractable substances from carbon black

1982-05-07

1984-03-06

Heller, Gregory A.

Chemistry of inorganic compounds

Carbon or compound thereof

Elemental carbon

423445, 423449, 423460, 106307, C01B 3102, C01B 3100, C09C 156

Patent

active

044353782

ABSTRACT:
A process for removing extractables from carbon blacks in a fluidized bed, wherein low extractable carbon blacks are treated under relatively mild temperature conditions (320.degree. C.) with an oxygen containing gas and high extractable carbon blacks are treated first at 100.degree.-320.degree. C. with steam and then at 200.degree.-500.degree. C. with an oxygen containing gas. A definition of classification in the "low extractable" and "high extractable" categories is given.

REFERENCES:
patent: 2714055 (1955-07-01), Cines et al.
patent: 4075160 (1978-02-01), Mills et al.
patent: 4138471 (1979-02-01), Lamond et al.
Ullmanns: Encyklopadie der Technischen Chemie, pp. 634-639, vol. 14, 1977.
Locati et al., American Ind. Hyg. Ass. J., pp. 644-652, 1979.

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