Patents Represented by Law Firm Beveridge, DeGrandi, Kline 6 Lunsford
  • Process for the control of the ratio DBP number/DBP number after pressing in the manufacture of carbon black pellets
    Patent number: 4238199
    Abstract: A process for controlling the ratio:DBP NUMBER/DBP NUMBER AFTER PRESSINGfor carbon black pellets comprising mixing the carbon black with water and forming the carbon black and water mixture into pellets by means of a wet pelletizing machine, selectively controlling the rotating shaft speed of the pelletizing machine and the amount of water and the location of water injected into the pelletizing machine; and subsequently drying the wet carbon black.
    Type: Grant
    Filed: July 30, 1979
    Date of Patent: December 9, 1980
    Assignee: Deutsche Gold- und Silber-Scheideanstalt vormals Roessler
    Inventors: Lothar Rothbuhr, Werner Sroka, Karl Vogel