Carbon black granules, process for producing carbon black granules and their use

摘要

The invention relates to carbon black granules with an APC value, measured at a conveying speed of 8 m / s and a solids loading of 27 g / kg, less than or equal to 20 and a 25 microns pressure filter value less than 5 bar cm2 / g. The carbon black granules are prepared by granulating soot powder in a first mixing granulator with the addition of a granulation liquid with or without a binder and granulating in a second mixing granulator without further addition of granulation liquid. The carbon black granules can be used as filler, reinforcing filler, UV stabilizer, conductivity carbon black, pigment or reducing agent.