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    11.
    发明专利
    未知

    公开(公告)号：DE59808972D1

    公开(公告)日：2003-08-14

    申请号：DE59808972

    申请日：1998-12-14

    Applicant: DEGUSSA

    Inventor： VOGLER CONNY DR ,  VOGEL KARL DR ,  WIESCHNOWSKY UDO DR ,  KOPIETZ JAN

    IPC: C08J3/21 ,  C08J3/22 ,  C08L91/06 ,  C09C1/58

    Abstract: Carbon black beads, which contain natural and/or synthetic wax and are produced by granulating carbon black powder, have a wax content of 1 to less than 10 wt.% and a hardness greater than 0.15 N. An Independent claim is also included for the continuous production of the beads. The beads are produced in a heated granulator with a toothed shaft and inlet, granulation and outlet zones. The carbon black powder is fed into the inlet zone. Molten wax or wax mixture with an average droplet size NOTGREATER 50 micron is sprayed into the first third of the granulation zone. The shaft operates at a maximum peripheral velocity of 1-6 m/s and the average residence time of the carbon black in the machine is 20-600 seconds.

    13.
    发明专利
    未知

    公开(公告)号：BR9805590A

    公开(公告)日：1999-11-23

    申请号：BR9805590

    申请日：1998-12-17

    Applicant: DEGUSSA

    Inventor： VOGLER CONNY DR ,  VOGEL KARL DR ,  WIESCHNOWSKY UDO DR ,  KOPIETZ JAN

    IPC: C08J3/21 ,  C08J3/22 ,  C08L91/06 ,  C09C1/58

    Abstract: Carbon black beads, which contain natural and/or synthetic wax and are produced by granulating carbon black powder, have a wax content of 1 to less than 10 wt.% and a hardness greater than 0.15 N. An Independent claim is also included for the continuous production of the beads. The beads are produced in a heated granulator with a toothed shaft and inlet, granulation and outlet zones. The carbon black powder is fed into the inlet zone. Molten wax or wax mixture with an average droplet size NOTGREATER 50 micron is sprayed into the first third of the granulation zone. The shaft operates at a maximum peripheral velocity of 1-6 m/s and the average residence time of the carbon black in the machine is 20-600 seconds.

    Granulated carbon black and process for preparing thereof
    16.
    发明专利
    Granulated carbon black and process for preparing thereof 未知

    公开(公告)号：CZ294194B6

    公开(公告)日：2004-10-13

    申请号：CZ416198

    申请日：1998-12-16

    Applicant: DEGUSSA

    Inventor： VOGLER CONNY DR ,  VOGEL KARL DR ,  WIESCHNOWSKY UDO DR ,  KOPIETZ JAN

    IPC: C08J3/21 ,  C08J3/22 ,  C08L91/06 ,  C09C1/58

    Abstract: Disclosed is granulated carbon black containing at least one natural or synthetic wax and obtained by granulation of powdered starting carbon black. The invented carbon black pellets have a wax content of from 1 to less than 10 percent by weight, based on a total weight of the carbon black pellets, wherein individual carbon black pellets have a hardness of greater than 0.15 N. A process for continuous production of the above-described carbon black pellets comprises: feeding carbon black powder into an inlet region of a pelletizing machine having a shaft with pins, the pelletizing machine further having a granulation region and an outlet region; adding a molten wax or a molten wax mixture to the pelletizing machine by atomizing said wax or wax mixture in a first third of the granulation region over the carbon black, which is still in powder form, wherein the atomized molten wax or molten wax mixture has an average droplet size not exceeding 50 microns, wherein a maximum circumferential speed of tips of the pin is from 1 to 6 m/s, and wherein an average residence time of the carbon black in the pelletizing machine is from 20 to 600 seconds; and continuously removing pelletized carbon black at the outlet region of the pelletizing machine. The wax mixture is atomized over the carbon black, through 2 to 5 nozzles that are arranged in a plane perpendicular to an axis of the shaft.

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