Method of producing a carbon black silica pigment

Details Method of producing a carbon black silica pigment Method of producing a carbon black silica pigment

1979-06-08

1980-07-08

McCarthy, Helen M.

Compositions: coating or plastic

Materials or ingredients

Miscellaneous

23313AS, 23314, 106288B, 106308B, 264 13, 264117, B01J 204, C09C 128, C09C 156, C09C 160

Patent

active

042115787

ABSTRACT:
A combined carbon black silica pigment is formed by forming a slurry of precipitated silica and producing a carbon black exhaust gas by the incomplete combustion of a hydrocarbon feedstock, then drying the silica slurry in a spray dryer with the heat of the carbon black exhaust gas to form a combined carbon black silica pigment having at least 28% by weight silica. The combined carbon black silica pigment is collected, pelletized and dried. The carbon black exhaust gas is quenched prior to entering the spray dryer.

REFERENCES:
patent: 3094428 (1963-06-01), Hamilton et al.
patent: 3390006 (1968-06-01), Takewell et al.
patent: 3406228 (1968-10-01), Hardy et al.
patent: 3597170 (1971-08-01), Dollinger
patent: 4155772 (1979-05-01), Birchall et al.
patent: 4158690 (1979-06-01), Price et al.
patent: 4159913 (1979-07-01), Birchall et al.

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