A stirring mill, including a horizontally arranged milling vessel and a stirring shaft which is arranged therein so that it can be rotationally driven are provided. The stirring shaft has a first stirring shaft section adjacent to an inlet for material to be ground, which has a smaller diameter D24, and a second stirring shaft section adjacent to an outlet for material to be ground, which has a larger diameter D25 and in which a separating device is formed. Bypass channels leading into the separating device are formed in the first stirring shaft section.

An agitator ball mill comprises agitating discs (18) on an agitating shaft, wherein two adjacent agitating discs (18) are bounding a grinding cell, respectively. The agitating discs (18) comprise grinding material passage openings (28) which are only arranged in the immediate proximity of a grinding chamber inner boundary (19), which connect adjacent grinding cells, and which have a radially outer boundary that has a distance R28 starting from the grinding chamber inner boundary (19) in the radial direction of the agitating disc (18). For the ratio of the distance R28 of the radially outer boundaries of the grinding material passage openings (28) to a radial extension R18 of the agitating discs (18), the following condition applies: 0.05.Math.R18R280.25.Math.R18. Otherwise the agitating discs (18) are closed.

An agitator ball mill includes a grinding chamber, a rotatably mounted agitator shaft, which protrudes into the grinding chamber and on which agitator elements, in the form of paddle wheels, are arranged spaced apart from one another axially, and an inlet for supplying material to be ground and grinding bodies and an outlet for removal of the ground material. The agitator elements are constructed in such a way that, during operation, they convey a mixture consisting of material to be ground or dispersed and grinding bodies through their interior outwards away from the agitator shaft. In the grinding chamber there are arranged return conveyor elements which are joined to the agitator shaft for conjoint rotation therewith and which convey the mixture laterally alongside and/or between the agitator elements inwards towards the agitator shaft.

An agitator shaft (1) for a grinding mill, including: an axle (2) intended to be driven in rotation, a succession of flat agitator elements (3) and tubular spacers (4) mounted in alternation on the axle and in a stack along the axle (2), end stops (5, 6), secured to the axle, that keep the stack of agitator elements and spacers under compression, characterized in that the tubular spacers (4) have orifices allowing the free circulation of material and fluids from the outside of the agitator shaft to the inside, and vice versa.

An agitator ball mill that includes agitating discs (18) on an agitating shaft drivable in a spinning direction (38), which are provided with entraining profiles (35). These entraining profiles (35) are formed by a trailing wall of a respective channel of a plurality of channels (36). In relation to the spinning direction (38) the trailing wall (39) of an inner channel section (49) runs radially straight relative to the central longitudinal axis (15) and has a length f, and has an outer bent-off channel section (41), which is bent off counter to the spinning direction (38). The outer channel sections (41) are closed radially to the outside by a peripheral portion (42) of the agitating disc (18) having a radial width e.

A circular disc element having at least two beam elements. Each beam element extends beyond an outer circumference of the circular disc element in an extension direction which is parallel to a radial direction of the disc element. The circular disc element further includes at least two holes extending through the circular disc element in a longitudinal direction which is substantially perpendicular to each of the extension directions with respect to a circumferential direction of the circular disc element, which circumferential direction corresponds to the outer circumference of the circular disc element. The circular disc element can function as a grinding means in a grinding process for grinding slurry.

A mill for grinding particles to submicron size. The mill has a rectangular prism-shaped housing for two internal barrels. Each internal barrel has a shaft and a plurality of overlapping circular discs attached to the shaft for grinding materials to submicron size. Each barrel also has blocked corners providing a cross-sectional shape of half of an octagonal prism disposed toward opposing ends of the housing. The housing also includes comprises curved acceleration ramps disposed between the barrels proximal to the overlapping circular discs on opposing sides of the housing. An inlet is provided for feeding material to be ground by the mill to an overlapped portion of the overlapping circular discs. An outlet is disposed at an end of the mill opposite the inlet for removing ground material from the mill. The overlapping circular discs are rotated in the mill at a shaft speed ranging from about 200 to about 1200 RPM.

An agitator ball mill comprises agitating discs (18) on an agitating shaft drivable in a spinning direction (38), which are provided with entraining profiles (35). These entraining profiles (35) are formed by channels (36) each comprising with itsin relation to the spinning direction (38)trailing wall (39) an inner channel section (49) running radially straight relative to the central longitudinal axis (15) and having a length f, and in the further course an outer bent-off channel section (41), which is bent off counter to the spinning direction (38). The outer channel sections (41) are closed radially to the outside by a peripheral portion (42) of the agitating disc (18) having a radial width e.

An agitator ball mill comprises agitating discs (18) on an agitating shaft, wherein two adjacent agitating discs (18) are bounding a grinding cell, respectively. The agitating discs (18) comprise grinding material passage openings (28) which are only arranged in the immediate proximity of a grinding chamber inner boundary (19), which connect adjacent grinding cells, and which have a radially outer boundary that has a distance R28 starting from the grinding chamber inner boundary (19) in the radial direction of the agitating disc (18). For the ratio of the distance R28 of the radially outer boundaries of the grinding material passage openings (28) to a radial extension R18 of the agitating discs (18), the following condition applies: 0.05.Math.R18R280.25.Math.R18. Otherwise the agitating discs (18) are closed.

An agitator mill having a circular-cylindrical outer stator and an agitator having a circular-cylindrical rotor. The rotor is arranged within the outer stator, and a milling chamber between the rotor and the outer stator. In the milling chamber, a through-flow direction which extends from a feed channel to a discharge channel. Several rotor milling tools are attached to the rotor, wherein several outer-stator milling tools are attached to the outer stator. The outer-stator milling tools are arranged adjacent to and in the circumferential direction and form rows. These rows are arranged parallel to one another on the outer stator. On the side, facing away from the feed channel the outer-stator milling tools of at least one row have a greater radial length than the other outer-stator milling tools. The outer-stator milling tools of each row in the circumferential direction each have the same length.