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

C - Chemistry, Metallurgy

09

C

23/313

C09C 1/56 (2006.01) C01B 31/02 (2006.01) C21B 15/00 (2006.01) C22B 7/02 (2006.01)

Patent

CA 1142325

ABSTRACT OF THE DISCLOSURE: The invention relates to a process for the removal of metals, especially of iron/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 to 90° 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.

364041

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