Described is a device for granulating a powder to be granulated or a powder mixture to be granulated. The device includes at least one working vessel in which the powder to be granulated or the powder mixture to be granulated is provided, at least one mixer for mixing the powder to be granulated or the powder mixture to be granulated, at least one dosing device for granulating liquid, and at least one drive unit that includes a rotational speed range for providing a drive torque required for the mixer. The drive unit provides a uniformly high drive torque over its entire rotational speed range. Also described is a method for granulating a powder to be granulated or a powder mixture to be granulated using such a device.

Described is a device for granulating a powder to be granulated or a powder mixture to be granulated. The device includes at least one working vessel in which the powder to be granulated or the powder mixture to be granulated is provided, at least one mixer for mixing the powder to be granulated or the powder mixture to be granulated, at least one dosing device for granulating liquid, and at least one drive unit that includes a rotational speed range for providing a drive torque required for the mixer. The drive unit provides a uniformly high drive torque over its entire rotational speed range. Also described is a method for granulating a powder to be granulated or a powder mixture to be granulated using such a device.

A method of producing high strength shaped alumina by feeding alumina power into an agglomerator having a shaft with mixers able to displace the alumina power along the shaft, spraying a liquid binder onto the alumina power as it is displaced along the shaft to form a shaped alumina, and calcining the shaped alumina. The shaped alumina produced having a loose bulk density of greater than or equal to 1.20 g/ml, a surface area less than 10 m.sup.2/g, impurities of less than 5 ppm of individual metals and less than 9 ppm of impurities in total, and/or crush strength of greater than 12,000 psi.

A wet granulator includes a material cylinder. A cylinder cover is rotatably arranged at an opening of the material cylinder, and a locking member is arranged on the cylinder cover. The locking member includes a locking housing, and the locking housing is provided with a first through groove. A locking pin slides in the first through groove, and the locking pin includes a middle rod and a contacting rod. A first end of the contacting rod is connected to a first end of the middle rod to form a contacting platform, and a second end of the contacting rod extends out of the first through groove. The first end of the middle rod is arranged in the first through groove, and a second end of the middle rod extends out of the first through groove. The second end of the middle rod is provided with a pin head.

A wet granulator includes a material cylinder. A cylinder cover is rotatably arranged at an opening of the material cylinder, and a locking member is arranged on the cylinder cover. The locking member includes a locking housing, and the locking housing is provided with a first through groove. A locking pin slides in the first through groove, and the locking pin includes a middle rod and a contacting rod. A first end of the contacting rod is connected to a first end of the middle rod to form a contacting platform, and a second end of the contacting rod extends out of the first through groove. The first end of the middle rod is arranged in the first through groove, and a second end of the middle rod extends out of the first through groove. The second end of the middle rod is provided with a pin head.

Provided is a device for granulating, agglomerating, pelletising, drying and/or coating, the device including a swirl chamber, a distribution chamber, wherein the swirl chamber is separated from the distribution chamber by a base and wherein a powder to be granulated or a powder mixture to be granulated is presented in the swirl chamber, the device further including at least one agitator for thoroughly mixing the powder to be granulated or the powder mixture to be granulated and at least one addition device for a liquid, wherein the base is designed in several parts and at least one base part is horizontally and/or vertically displaceable, with the result that that the base becomes a distributor plate. Also provided is a method for granulating, agglomerating, pelletising, drying and/or coating using such a device and a base suitable for use as a distributor plate in a convective drying apparatus.

Provided is a device for granulating, agglomerating, pelletising, drying and/or coating, the device including a swirl chamber, a distribution chamber, wherein the swirl chamber is separated from the distribution chamber by a base and wherein a powder to be granulated or a powder mixture to be granulated is presented in the swirl chamber, the device further including at least one agitator for thoroughly mixing the powder to be granulated or the powder mixture to be granulated and at least one addition device for a liquid, wherein the base is designed in several parts and at least one base part is horizontally and/or vertically displaceable, with the result that that the base becomes a distributor plate. Also provided is a method for granulating, agglomerating, pelletising, drying and/or coating using such a device and a base suitable for use as a distributor plate in a convective drying apparatus.

A method for producing a coated inorganic powder by stirring and mixing an inorganic powder and an organic compound, thereby coating the particle surface of the inorganic powder with the organic compound, the method including making the coating amount of the organic compound relative to the inorganic powder uniform while reducing the inorganic powder and the organic compound which stick to the inner wall of a vessel is provided.

When stirring the inorganic powder and the organic compound in a vessel that is equipped with a stirring blade and has an opening portion, at least a first stirring step and a second stirring step after the first stirring are provided. When the speed of the stirring blade of the first stirring step is defined as V.sub.1 (m/s) and the speed of the stirring blade of the second stirring step is defined as V.sub.2 (m/s), the relationship of “V.sub.1>V.sub.2” is established.

A process for producing an optimized granular material producing a granular material in a granulating mixer having a container and a stirrer tool, and comminuting at least a part of the granular material in a granular material conditioner which has two elements which move relative to each other, and granular material is passed through a gap between the two elements.

A process for producing an optimized granular material producing a granular material in a granulating mixer having a container and a stirrer tool, and comminuting at least a part of the granular material in a granular material conditioner which has two elements which move relative to each other, and granular material is passed through a gap between the two elements.