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    11.
    发明专利
    未知

    公开(公告)号：DE3873609D1

    公开(公告)日：1992-09-17

    申请号：DE3873609

    申请日：1988-05-11

    Applicant: BASF AG

    Inventor： GOESELE WILHELM DR ,  NONN GUENTHER DR ,  SCHREINER SIEGFRIED DR ,  SEID BERNHARD ,  THIELE HEINO DR

    IPC: B01F7/08 ,  C01B17/66 ,  D06P1/22 ,  D06P1/30 ,  D06P1/673 ,  D21C9/10

    Abstract: A pumpable and non-sedimenting high-conc. paste is made by mixing powdered sodium dithionite (hyposulphite) with organic liq. which is inert relative to that material in an intensive mixer whose mixing and dispersal operation is divided into separate stages. Suitable appts. has a rapidly rotating single-shaft extruder with three separate linear feed worm section sepd. by mixing and dispersal elements whose gap from the surrounding cylindrical stator is less than for the worm sections. Pre-mixing takes place with organic liq. from an initial feeder while further liq. or liq. mixts. are injected before the mixing elements. The entire extruder has a tempering jacket, and discharges into a cooler taking the paste to about 30 deg.C before storage.

    14.
    发明专利
    未知

    公开(公告)号：DE3406322A1

    公开(公告)日：1985-08-22

    申请号：DE3406322

    申请日：1984-02-22

    Applicant: BASF AG

    Inventor： APPL MAX DR ,  GOESELE WILHELM DR ,  MELZER JAROSLAV ,  SCHREINER SIEGFRIED DR ,  TREIBER GERT DR

    IPC: C01B17/66 ,  D06L4/30 ,  D06P5/10 ,  D21C9/10

    Abstract: Stabilized water-containing sodium dithionite formulations which have been rendered alkaline have the consistency of a pumpable paste. They additionally contain readily soluble sodium salts and/or potassium salts which are inert to sodium dithionite and whose water-solubility at 20 DEG C. exceeds 500 g/l. These salts are present in the aqueous phase in an amount of not less than 200 g/l. The pastes are useful reducing agents.

    16.
    发明专利
    未知

    公开(公告)号：DE1767753A1

    公开(公告)日：1971-09-30

    申请号：DE1767753

    申请日：1968-06-12

    Applicant: BASF AG

    Inventor： WOLF HERBERT DR-ING ,  GOESELE WILHELM DR

    IPC: C01B17/52 ,  C22B1/10

    Abstract: A fluidized-bed method of roasting sulfidic materials containing arsenic and/or antimony with a gas containing oxygen with separate supply of the gas containing oxygen for the preroasting in a first stage and for the afterroasting in the second stage and with separate withdrawal of the roaster gas from the preroasting stage and from the afterroasting stage. The dusty portion of the roasted intermediate product from the first stage is introduced periodically into the fluidized bed of the second stage and, in timed relationship with this periodic introduction of the roasted intermediate product, air is periodically introduced into the gas space above the fluidized bed in the second layer in such an amount that it is adequate for complete roasting of the dusty roasted intermediate products suspended in this gas space.

    Process for preparing boron trifluoride
    19.
    发明专利
    Process for preparing boron trifluoride 未知

    公开(公告)号：DE3744387A1

    公开(公告)日：1989-07-13

    申请号：DE3744387

    申请日：1987-12-29

    Applicant: BASF AG

    Inventor： BRUNNER ERWIN DR ,  EBENHOECH FRANZ LUDWIG DR ,  GOESELE WILHELM DR ,  MEYER HERMANN DR

    IPC: C01B35/06

    Abstract: To prepare boron trifluoride, calcium fluoride is reacted with oleum and boron compounds. The reaction is carried out in two stages, with a) in a first stage, reacting calcium fluoride with oleum and b) in a second stage, reacting the reaction mixture from the first stage with a boron compound of the general formula B2O3.yX2O, in which y is 0, 0.5, 1 or 3 and X is hydrogen or an alkaline metal. The amount of oleum to be introduced to the first stage is calculated in such a way that 1 mol of free SO3 is added per mol of calcium fluoride and one further mol of SO3 + 10% is added for each mol of X2O of the boron compound.

    20.
    发明专利
    未知

    公开(公告)号：DE3620023A1

    公开(公告)日：1987-12-17

    申请号：DE3620023

    申请日：1986-06-13

    Applicant: BASF AG

    Inventor： PFORR GERHARD DR ,  MEYER HERMANN DR ,  GOESELE WILHELM DR ,  STARK HANS DR

    IPC: C01F7/60

    Abstract: Anhydrous aluminum chloride is prepared by reacting gamma -alumina with carbon monoxide and chlorine and/or phosgene in a fluidized bed at from 400 DEG to 700 DEG C. The gamma -alumina used gives, with CuK alpha radiation, an X-ray diffraction pattern whose intensity at the diffraction angle 2(-)=42.8 DEG +/-0.4 DEG divided by the intensity at the diffraction angle 2(-)=45.7 DEG +/-0.2 DEG is

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