Pelleting of carbon black

Details Pelleting of carbon black Pelleting of carbon black

1976-08-09

1978-07-25

White, Robert F.

Plastic and nonmetallic article shaping or treating: processes

Forming articles by uniting randomly associated particles

Stratified or layered articles

264117, B01J 210

Patent

active

041029674

ABSTRACT:
Carbon black is pelleted by combining loose carbon black with an aqueous pelleting liquid and agitating the mixture. Additional loose carbon black is added in a series of increments, followed by additional aqueous pelleting liquid containing an additive such as ammonium lignin sulfonate. The process produces layered pellets having a hardened outer shell. In another embodiment, an oil is added following the incremental addition of the loose carbon black in order to produce pellets which have a dust-free surface.

REFERENCES:
patent: 2639225 (1953-05-01), Venuto
patent: 2850403 (1958-09-01), Day
patent: 3391234 (1968-07-01), Walenciak et al.
patent: 3459844 (1969-08-01), Cole
patent: 3956445 (1976-05-01), Hunt
patent: 3969457 (1976-07-01), Paris

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