A device for comminuting feed material with first comminuting tools and second comminuting tools, which are arranged inside a housing coaxially to an axis and which are axially spaced apart to form a comminuting zone, and of which at least the first comminuting tools perform a rotational movement about the axis. In a contact area between a first tool carrier and the first comminuting tools and/or in a contact area between a second tool carrier and the second comminuting tools a plurality of channels for the passage of a process gas are provided. The channels each have a radially inner inlet opening through which the process gas enters the channels and a radially outer outlet opening through which the process gas emerges from the channels. Among other things, this achieves improved cooling of the comminuting zone.

A mineral liberation machine comprising vertical wet grinding mill (10) for grinding coarse material comprising a cylindrical housing (14) containing a rotatable shaft (15) creating an annular channel (17) with an input feed (16) for supplying coarse material and an output feed (18) for withdrawing ground product, in which the rotatable shaft (15) is equipped with a plurality of rotor discs (20) and the cylindrical housing (14) is equipped with one or more stators or stator discs (22), the discs (20, 22) on the rotatable shaft (15) and cylindrical housing (14) are interleaved such that the ratio of the height of the housing (14) to the diameter of the housing (14) is low with the diameter to height ratio being between 0.6-1.2.

A mineral liberation machine comprising vertical wet grinding mill (10) for grinding coarse material comprising a cylindrical housing (14) containing a rotatable shaft (15) creating an annular channel (17) with an input feed (16) for supplying coarse material and an output feed (18) for withdrawing ground product, in which the rotatable shaft (15) is equipped with a plurality of rotor discs (20) and the cylindrical housing (14) is equipped with one or more stators or stator discs (22), the discs (20, 22) on the rotatable shaft (15) and cylindrical housing (14) are interleaved such that the ratio of the height of the housing (14) to the diameter of the housing (14) is low with the diameter to height ratio being between 0.6-1.2.

An apparatus for preparing a smokeable product is provided. The apparatus includes an upper chamber configured to receive feed material, a feed material cutting mechanism comprising a size reducer configured to rotate in two directions, a motor configured to rotate the feed material cutting mechanism, a controller configured to selectively reverse direction of rotation of the feed material cutting mechanism, a power source configured to drive the motor, a switch for turning the power source off and on, and a fan in the uppermost chamber configured to move feed material within the uppermost chamber to a lowermost chamber.

The invention relates to a refiner plate segment in a refiner plate for mechanically refining of lignocellulosic material in a refiner, said refiner plate segment comprising at least a first, generally radially extending bar, a second, generally radially extending bar, a groove arranged and defined between said first, generally radially extending bar and said second, generally radially extending bar, and a main dam, which has a height H and is arranged in the groove, wherein a pre-dam is arranged in front of the main dam, said pre-dam has a height h which is less than the height H of the main dam.

The invention features device for grinding and storing herbs and tobacco having a grinder and dispenser that grinds and dispenses the herbs and also holds the herbs and its paraphernalia. The device features storage compartments to hold herb paraphernalia. Release mechanisms such as a push button, slider or aperture allow the herbs to be dispensed directly into rolling paper for immediate use.

A system for preparing smokeable material comprising a wall providing an upper chamber and a lower chamber with a grate between the chambers. Feed smokeable material in the upper chamber has its size reduced with a size reducer a sufficient amount that it can pass through the grade into the lower chamber as fill smokeable material. A support below the lower chamber is provided for supporting a wrapper. There is an opening in the lower chamber for fill smokeable material to pass into the wrapper. An axially moveable tamper can tamp the fill smokeable material in the wrapper. Biasing means bias the wall and tamper into the upper position. A mechanism is provided for moving the tamper from its upper position to its lower position against the biasing means for tamping the smokeable material in the wrapper.

A system for preparing smokeable material comprising a wall providing an upper chamber and a lower chamber with a grate between the chambers. Feed smokeable material in the upper chamber has its size reduced with a size reducer a sufficient amount that it can pass through the grade into the lower chamber as fill smokeable material. A support below the lower chamber is provided for supporting a wrapper. There is an opening in the lower chamber for fill smokeable material to pass into the wrapper. An axially moveable tamper can tamp the fill smokeable material in the wrapper. Biasing means bias the wall and tamper into the upper position. A mechanism is provided for moving the tamper from its upper position to its lower position against the biasing means for tamping the smokeable material in the wrapper.

A rotary grinding mill for that improves the rotary grinding mill process. A milling assembly that comprise an offset ripper blades to limit the noise applied to the unit, cutting edges on the milling assembly blades, and an trailing blade edge that is angled creating a milling fan blade. The milling fan blade creates an air flow through the mill assembly. A collection container that utilized a plurality of cyclonic air flow patterns and filters to remove particles from the air. A rotary grinding mill comprising a mill housing, a hopper, and collection container, such that the grinding mill may be stored in a single unit.

A rotary grinding mill for that improves the rotary grinding mill process. A milling assembly that comprise an offset ripper blades to limit the noise applied to the unit, cutting edges on the milling assembly blades, and an trailing blade edge that is angled creating a milling fan blade. The milling fan blade creates an air flow through the mill assembly. A collection container that utilized a plurality of cyclonic air flow patterns and filters to remove particles from the air. A rotary grinding mill comprising a mill housing, a hopper, and collection container, such that the grinding mill may be stored in a single unit.