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US 2010/0143585 A1Published application
Carbon black pellets and method of forming same
OwnerChang H. Leeinventor
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Abstract
A carbon black pellet comprising an inner core of de-aerated carbon black and an outer surrounding shell of an encapsulating material, the shell of the encapsulating material having an average thickness of from about 1% to about 10% of the average thickness of the pellet.
Claims25
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A method of forming carbon black pellets comprising:
- de-aerating carbon black aggregates to form de-aerated carbon black;
- introducing said de-aerated carbon black into a fluid-solids contactor;
- introducing a particulate encapsulating material into said contactor;
- and
- contacting said de-aerated carbon black with said encapsulating material for a period of time sufficient to form encapsulated carbon black pellets comprising an inner core of de-aerated carbon black and an outer surrounding shell of encapsulating material, wherein said shell has an average thickness of about 1% to about 10% of the average thickness of said pellet.
2 more elements
Dependencies are inferred from the claim text.