Process for the removal of metals from carbon black

Details Process for the removal of metals from carbon black Process for the removal of metals from carbon black

1980-11-03

1982-03-16

Meros, Edward J.

Chemistry of inorganic compounds

Carbon or compound thereof

Elemental carbon

210705, C01B 3102

Patent

active

043201083

ABSTRACT:
The invention relates to a process for the removal of metals, especially of iron and/or nickel and/or vanadium or their compounds, from carbon black. To this end, the invention provides for an aqueous carbon black suspension to be heated to a temperature of about 30.degree. to 90.degree. C., for chlorine to be passed therethrough with agitation. The chlorine gas is used in a stoichiometric excess, based on the metal content of the aqueous carbon black suspension. Next, the carbon black is separated from the aqueous suspension and dried.

REFERENCES:
patent: 2149671 (1939-03-01), Franck et al.
patent: 2725985 (1955-12-01), Howard et al.
patent: 2894603 (1959-07-01), Vasan
patent: 3226316 (1965-12-01), Metrailer et al.

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