Oxidative after-treatment of carbon black

Details Oxidative after-treatment of carbon black Oxidative after-treatment of carbon black

1982-10-06

1984-03-06

Heller, Gregory A.

Chemistry of inorganic compounds

Carbon or compound thereof

Elemental carbon

423449, 423461, 106307, C09C 156, C09C 148, C01B 3102

Patent

active

044353774

ABSTRACT:
The invention relates to a process for after-oxidation of carbon black powder with oxidants which are gaseous or are dispersed in the gas phase. A closed vertical cylinder is provided at its top with a carbon black input opening and a vent duct and at its bottom with feed ducts for oxidant or flushing air. A stirrer shaft runs along its central axis; stirrer arms are fitted to it at intervals over the height of the cylinder and offset with respect to each other, and sweep over the whole cylinder cross section in predominantly horizontal setting.

REFERENCES:
patent: Re19664 (1935-08-01), Damar
patent: 2457962 (1949-01-01), Wheley
patent: 2682448 (1954-06-01), Cines
patent: 2799358 (1957-07-01), Bradley
patent: 3247003 (1966-04-01), Pollock
patent: 3676365 (1972-07-01), Shirai et al.
patent: 4010001 (1977-03-01), Dollinger

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