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.

A stirring device for stirring a particulate material and a grinding media in a grinding mill includes one or more protective elements that extend outwardly from a body to deflect the particulate material and the grinding media from the body to minimize contact of the mixture of the particulate material and the grinding media against the body and to promote contact between the particulate material and the grinding media.

A stirring device for stirring a particulate material and a grinding media in a grinding mill includes one or more protective elements that extend outwardly from a body to deflect the particulate material and the grinding media from the body to minimize contact of the mixture of the particulate material and the grinding media against the body and to promote contact between the particulate material and the grinding media.

A horizontal bead mill for dispersing secondary battery materials and a method for dispersing conductive materials using the horizontal bead mill for dispersing the secondary battery materials are provided. The horizontal bead mill includes a vessel including an inlet and an outlet configured to receive disperse media. The vessel is filled with beads. A rotor is rotated in the vessel to rotate the beads to disperse the disperse media. A driving unit rotates the rotor. An inner surface of a sidewall of the vessel is inclined at a predetermined angle for an axis of the rotor in a manner that an inner diameter of the vessel gradually decreases from an inlet side to an outlet side.

A horizontal bead mill for dispersing secondary battery materials and a method for dispersing conductive materials using the horizontal bead mill for dispersing the secondary battery materials are provided. The horizontal bead mill includes a vessel including an inlet and an outlet configured to receive disperse media. The vessel is filled with beads. A rotor is rotated in the vessel to rotate the beads to disperse the disperse media. A driving unit rotates the rotor. An inner surface of a sidewall of the vessel is inclined at a predetermined angle for an axis of the rotor in a manner that an inner diameter of the vessel gradually decreases from an inlet side to an outlet side.

A grinding apparatus includes: a rotating body configured to include therein a channel extending up to an opening formed in its own outer peripheral surface, the rotating body being configured to be capable of accommodating in the channel the substance to be ground and a grinding medium capable of grinding the substance to be ground; and a grinding container configured to include therein an accommodation space accommodating the rotating body and an opposed surface opposed to the opening of the rotating body, the opposed surface extending annually about the center axis of the rotating body. The grinding medium and the substance to be ground are capable of being moved from the channel to the accommodation space through the opening by rotating the rotating body. The grinding apparatus that can efficiently grind a substance to be ground can be realized.

A grinding apparatus includes: a rotating body configured to include therein a channel extending up to an opening formed in its own outer peripheral surface, the rotating body being configured to be capable of accommodating in the channel the substance to be ground and a grinding medium capable of grinding the substance to be ground; and a grinding container configured to include therein an accommodation space accommodating the rotating body and an opposed surface opposed to the opening of the rotating body, the opposed surface extending annually about the center axis of the rotating body. The grinding medium and the substance to be ground are capable of being moved from the channel to the accommodation space through the opening by rotating the rotating body. The grinding apparatus that can efficiently grind a substance to be ground can be realized.

The present invention discloses a method and corresponding apparatus for separating lightweight materials from fabric pieces. The method comprises the steps of (a) introducing fabric pieces into a tumbling means having perforations for lightweight materials in the fabric pieces to be removed therethrough and coupled to a first source of negative pressure; (b) tumbling the fabric pieces in the tumbling means and simultaneously applying negative pressure from the first source of negative pressure to the tumbling means for removing lightweight particles detached from the tumbling fabric pieces from the tumbling means; (c) transporting the fabric pieces from the tumbling means to a top of a vertical separation chamber; and (d) applying forced air to the fabric pieces as the fabric pieces drop from the top to bottom of the vertical separation chamber by gravity for separating the lightweight materials from the fabric pieces, and simultaneously applying negative pressure from a second source of negative pressure to the vertical separation chamber to remove the lightweight materials separated from the fabric pieces from the vertical separation chamber; repeating this step until the fabric pieces are substantially cleared of any lightweight materials. The apparatus comprises a tumbling means and a vertical separation chamber.

There is disclosed a grinding mill rotor for a grinding mill to stir a slurry of mineral ore particles, or other particulate material, and a grinding medium within the grinding mill thereby to cause turbulence within the slurry to promote attrition of the particulate material through interaction with the grinding medium. The grinding mill rotor includes a planar body having an axis of rotation around which the body rotates during use. Several spaced apart paddles are provided on and extend transversely across the body. At least some of the paddles have a rotationally leading face that is angled relative to an orthogonal line extending orthogonally from the axis of rotation of the body, wherein an offset angle β between the leading face and the orthogonal line is selected to be between 1° and 35° to control a rate at which the slurry slides across the planar body during use.

The present invention relates to apparatus for simultaneous grinding and froth flotation of at least one crude mineral and/or pigment, a process carried out in the apparatus for manufacturing at least one ground mineral and/or pigment, use of the ground mineral and/or pigment bearing phase obtainable by the process in paper applications as well as in paper, plastics, paints, coatings, adhesives, sealants, food, feed, pharma, concrete, cement, cosmetic, water treatment and/or agriculture applications, preferably in a wet end process of paper machine, in cigarette paper, board, and/or coating applications, or as support for rotogravure and/or offset and/or ink jet printing and/or continuous ink jet printing and/or flexography and/or electrophotography and/or decoration surfaces and the ground mineral and/or pigment bearing phase or ground mineral and/or pigment obtainable by the process.