... under mohs hardness of 6.5 like kaolin, lithophone, carbon black, gypsum, talc, lime, feldspar, coal, shell red ... , natural rubber, yellow red powder, barium sulfate zinc oxide, iron oxide, calcium carbonate, magnesium sulfate, graphite, titanium dioxide, aluminum ... between 20 and 1250 mesh at random.Carbon Black Processing Machine Technical parameters:Name500700800instructionGranularity of feed (mm ...