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    92.
    发明专利
    未知

    公开(公告)号：NO892640D0

    公开(公告)日：1989-06-26

    申请号：NO892640

    申请日：1989-06-26

    Applicant: DEGUSSA

    Inventor： DANIELS IVO ,  MANNER REINHARD ,  MUELLER KARL HANS ,  BARTHEL WALTER

    IPC: C10C3/14 ,  C08J3/12 ,  C08L95/00

    Abstract: Bitumen granules which contain 0.5 to 6 % by weight of a powdering and separating agent such as, for example, synthetic silica or carbon black, is produced by atomising hot liquid bitumen in a known spray mixer and simultaneously introducing the powdering and separating agent via the cold air stream into the spray mixer.

    93.
    发明专利
    未知

    公开(公告)号：DE3714386A1

    公开(公告)日：1988-12-01

    申请号：DE3714386

    申请日：1987-04-30

    Applicant: DEGUSSA

    Inventor： MUELLER KARL-HANS DR ,  BARTHEL WALTER

    IPC: B28C7/04 ,  B05B7/14 ,  B28C7/06 ,  B65G53/32 ,  C04B14/06 ,  C04B28/04 ,  E04G21/02 ,  E04G21/04 ,  B65G53/08

    Abstract: To apply a layer of spray concrete to a surface, a pumpable and sprayable spray concrete mix is made up from cement, aggregates, if appropriate additives, and water. A preset mass flow of the spray concrete mix is sprayed by means of a concrete delivery pump through a concrete transfer line to a spray gun with a device for introducing propellant air under a delivery pressure of several bar. The propellant air is laden with synthetic silica having a BET surface area of at least 25 m /g. With the propellant air, the synthetic silica is introduced into the mass flow of the spray concrete mix in such a quantity that the applied spray concrete undergoes a spontaneous temperature increase by a few degrees Kelvin immediately after the application. A spray gun for the process is also described.

    94.
    发明专利
    未知

    公开(公告)号：FI881272A

    公开(公告)日：1988-10-31

    申请号：FI881272

    申请日：1988-03-17

    Applicant: DEGUSSA

    Inventor： MUELLER KARL-HANS ,  BARTHEL WALTER

    IPC: B28C7/04 ,  B05B7/14 ,  B28C7/06 ,  B65G53/32 ,  C04B14/06 ,  C04B28/04 ,  E04G21/02 ,  E04G21/04 ,  C04B

    Abstract: To apply a layer of spray concrete to a surface, a pumpable and sprayable spray concrete mix is made up from cement, aggregates, if appropriate additives, and water. A preset mass flow of the spray concrete mix is sprayed by means of a concrete delivery pump through a concrete transfer line to a spray gun with a device for introducing propellant air under a delivery pressure of several bar. The propellant air is laden with synthetic silica having a BET surface area of at least 25 m /g. With the propellant air, the synthetic silica is introduced into the mass flow of the spray concrete mix in such a quantity that the applied spray concrete undergoes a spontaneous temperature increase by a few degrees Kelvin immediately after the application. A spray gun for the process is also described.

    95.
    发明专利
    未知

    公开(公告)号：DK231788A

    公开(公告)日：1988-10-31

    申请号：DK231788

    申请日：1988-04-28

    Applicant: DEGUSSA

    Inventor： MUELLER KARL-HANS ,  BARTHEL WALTER

    IPC: B28C7/04 ,  B05B7/14 ,  B28C7/06 ,  B65G53/32 ,  C04B14/06 ,  C04B28/04 ,  E04G21/02 ,  E04G21/04 ,  B65G53/08

    Abstract: To apply a layer of spray concrete to a surface, a pumpable and sprayable spray concrete mix is made up from cement, aggregates, if appropriate additives, and water. A preset mass flow of the spray concrete mix is sprayed by means of a concrete delivery pump through a concrete transfer line to a spray gun with a device for introducing propellant air under a delivery pressure of several bar. The propellant air is laden with synthetic silica having a BET surface area of at least 25 m /g. With the propellant air, the synthetic silica is introduced into the mass flow of the spray concrete mix in such a quantity that the applied spray concrete undergoes a spontaneous temperature increase by a few degrees Kelvin immediately after the application. A spray gun for the process is also described.

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