An agitator ball mill comprising a grinding chamber having a cylindrical wall, and further having a rotatably mounted agitator shaft extending into the grinding chamber and on which at least one agitator element is arranged inside the grinding chamber. The mill further comprises an inlet for supplying to the grinding chamber material to be ground and grinding bodies, an outlet for removal of the ground material, and an induction heater for the material to be ground located in the grinding chamber, the induction heater comprising an inductor and a susceptor. The at least one agitator element comprises a susceptor material which forms the susceptor of the induction heater, wherein the inductor comprises at least one coil which is arranged outside the cylindrical wall of the grinding chamber and encompasses the grinding chamber, and wherein the cylindrical wall of the grinding chamber consists of an electrically and magnetically non-conductive material.

A composite milling component comprising a composite region of ceramic material and metal is disclosed. The milling component may comprise a lifting member such as a digger shoe of a vertical tower mill, a flight liner of a vertical tower mill, a shell liner of a horizontal axis mill, and/or an end liner of a horizontal axis mill. The composite region may be formed into a portion of the milling component that experiences greater wear than other portions to increase a wear-resistance of the milling component. The composite region may be formed integrally into the milling component during a casting processes of the milling component.

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.

The media-circulation type pulverizer comprising: an agitating member disposed in a lower region of a pulverization chamber and having a rotary shaft substantially coaxial with a central axis of the pulverization chamber; an annular partition wall disposed to extend upwardly from a position surrounding an outer periphery of the agitating member or a position radially away from the outer periphery by a given distance, so as to radially divide an internal space of the pulverization chamber to form an inner region of a pulverization chamber and an annular outer region of a pulverization chamber; a media guide member provided on a central area of a lower surface of the end plate to extend downwardly and configured to turn a mixture of a raw material slurry and pulverizing media being moved upwardly through the outer region of the pulverization chamber by an action of the agitating member, to a downward flow so as to direct the mixture toward the inner region of the pulverization chamber; a media separation member provided underneath the media guide member; and a product slurry discharge section provided inside the media guide member and communicating with an inside of the media separation member so as to enable a product slurry after separation of the pulverizing-dispersing media by the media separation member to be discharged to outside therethrough, wherein the media-circulation type pulverizer is operable to circulate the pulverizing media through the inner region of the pulverization chamber and the outer region of the pulverization chamber to pulverize a raw material in the raw material slurry by the pulverizing media being circulated.

Disclosed is an apparatus that is an attrition mill for grinding or comminuting ores, mine wastes, and radioactive wastes some of which may comprise metals, which may include uranium and/or cesium and/or mercury and/or thorium and/or rare earth elements. Also disclosed are processes that employ the apparatus for combined grinding and optionally leaching metals from ores and wastes. Some such methods comprise an optional step of grinding and mixing the ore or waste with a solid inorganic base with water addition or with an aqueous inorganic base, follow by a step of grinding and mixing the ore or waste with an aqueous inorganic acid with or without leaching salt addition, to solubilize the metals present in the ore or the waste. The disclosed apparatus and methods, in some embodiments, enable efficient grinding and attrition of ores substrates and mine wastes even without need for grinding media.

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 vertical ball mill for grinding a solid input material to form a slurry, and includes a grinding tank which defines a mixing chamber, rotatable main auger assembly having mixing blade in a lower portion of the mixing chamber and a materials flow guide. The flow conduit is provided within the grinding tank interior, and includes one or more conduit segments configured to direct input material downwardly in the grinding tank towards the lower mixing chamber and auger mixing blade. An impeller is provided within the flow conduit, with a blade configuration selected to effect the downward flow of input material through the conduit segments and outwardly therefrom adjacent to the mixing blade as the auger assembly is rotated.

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.

A composite milling component comprising a composite region of ceramic material and metal is disclosed. The milling component may comprise a lifting member such as a digger shoe of a vertical tower mill, a flight liner of a vertical tower mill, a shell liner of a horizontal axis mill, and/or an end liner of a horizontal axis mill. The composite region may be formed into a portion of the milling component that experiences greater wear than other portions to increase a wear-resistance of the milling component. The composite region may be formed integrally into the milling component during a casting processes of the milling component.

The present invention relates to tilting a wet stone grinder of capacity in the 125-300 liter size. Tilting is accomplished by a gear driven, manual or motorized tiling mechanism.