Abstract: For the continuous autogenous grinding of a free-flowing stock containing insoluble particles of varying diameter, the stock is set rotating concentrically of an axis in a grinding chamber, insoluble particles of greater diameter being concentrated superproportionally in the grinding chamber. There is no need of an auxiliary-grinding-body retaining device.

Abstract: An agitator mill comprises a grinding receptacle and an agitator unit disposed in the latter and having an agitator shaft. The agitator shaft is hollow, this grinding-stock/auxiliary-grinding-body return chamber being connected with the grinding chamber at one end of the agitator shaft. At the other end of the agitator shaft, the return chamber opens into a cage-type section of the agitator shaft, an auxiliary-grinding-body retaining device likewise projecting into this section.

Abstract: An agitator mill comprises a grinding receptacle, in which a high-speed agitator is disposed. An auxiliary-grinding-body outlet discharges from an end of the grinding receptacle, a grinding-stock and auxiliary-grinding-body return line leading from this outlet to the other end of the grinding receptacle. Directly adjoining the auxiliary-grinding-body outlet, a grinding-stock supply line opens into the line, which ensures the auxiliary grinding bodies to circulate reliably.

Abstract: An agitator mill for treating free-flowing grinding stock comprises a discharge device, which is provided with a separating device to be disposed in the grinding chamber. In the separating device a mixing device is arranged, which comprises a mixing body movable in longitudinal direction of the cylindrical separating device.

Abstract: An agitator mill has an in each case annular cylindrical exterior grinding chamber and an interior grinding chamber, which are delimitated from each other by a cup-shaped agitator element, the interior grinding chamber and the exterior grinding chamber being connected with each other by bypasses formed in the agitator element for the return of auxiliary grinding bodies. In order to improve the grinding result and to increase the lifetime of the auxiliary grinding bodies or to be able to use even smaller auxiliary grinding bodies without their reaching a separator device arranged ahead of a grinding stock exit, carriers are arranged in the area of the bypasses at the inner casing of the agitator element and extend over a substantial part of the radial width of the interior grinding chamber and into it.

Abstract: An agitator mill for the treatment of flowable grinding stock has a grinding receptacle (3) with a mostly closed grinding chamber (9) and a rotatingly drivable agitator element (21) disposed therein. An interior stator (24) is disposed in the agitator element. A grinding stock supply chamber (53) is placed ahead of the grinding chamber. On the same side of the grinding receptacle (3) a separator device (34) is provided through which the grinding stock is discharged again after treatment. In order to prevent to a large extent wear on the separator device (34) and, at the same time, to achieve as even as possible a distribution of the grinding bodies in the grinding chamber (9), the agitator element (21) is designed approximately cup-shaped and disposed between the interior stator (24) and the wall of the grinding receptacle (3) with the formation of an exterior grinding chamber (9') and an interior grinding chamber (9").

Abstract: An apparatus for regulating an agitator mill for comminution, deagglomeration and dispersion of grinding stock present in the form of a suspension is provided. To attain a constantly uniform grinding stock fineness, a device is provided for keeping the specific energy input constant, the specific energy input being determined by the quotient of the power introduced into the grinding stock and the grinding stock mass flow. A device is also provided for detecting the distribution of the auxiliary grinding bodies in the grinding chamber. The distribution of the auxiliary grinding bodies can be determined by detecting the pressure drop in the grinding chamber. Further, the distribution of the auxiliary grinding bodies can be detected by means of at least two partial cooling chambers connected parallel to one another, with individual heat flows being detected via the partial cooling chambers.

Abstract: A closed agitator mill for grinding and mixing solids in liquids has a grinding space partially filled with auxiliary grinding elements, in which an agitator mechanism that can be driven at high speed is located; the agitator mechanism comprises an agitator shaft and agitator tools attached to it and generates a flow of grinding stock and auxiliary grinding bodies. At least one tubular screen cartridge, which is interchangeable from outside, is disposed before a ground stock outlet from the grinding space. The screen cartridge protrudes into the space between the agitator shaft and the wall of the grinding space and serves to separate the auxiliary grinding elements from the grinding stock.