A method of obtaining cullet from a solar module unit is disclosed. The method involves providing a solar module unit in which a detectable tagging material has been applied onto an exposed outer surface of a glass substrate of the solar module unit over one or more electrically conductive contact strips located beneath and visible through the glass substrate. Thereafter, the solar module unit is crushed into assorted module pieces. The assorted module pieces are then sorted by detecting module pieces that include the detectable tagging material and separating the assorted module pieces into a collection of accepted module pieces and a collection of rejected module pieces. The collection of accepted module pieces has module pieces determined not to include the detectable tagging material. Recycled glass is then obtained from the collection of accepted module pieces.

A grinding plant, comprising: a first mill (10), arranged to grind a product having a greater grain size, provided with an inlet (11) and an outlet (12); a second mill (20), arranged to grind the product to a smaller grain size, provided with an inlet (21) and an outlet (22); wherein the product in outlet from the first mill (10) is fed to the second mill (20). The plant further comprises a screen (30), interposed between the two mills (10, 20).

Embodiments of the present invention pertain to a plant trimming device having a removable cutting cartridge. A direct-drive motor is magnetically coupled to the cutting cartridge. The cutting cartridge houses a blade and a set of rotating blades. Plant parts are cut by the rotating blades across the razor. The cartridge is mounted on rails and has a handle to facilitate the ease of inserting and removing the cutting cartridge. Thereby, an old cutting cartridge is readily removed and replaced by a new cutting cartridge. Furthermore, the cutting cartridge can easily be removed for cleaning and later re-inserted back into the plant trimming device.

Embodiments of the present invention pertain to a modular plant trimming system. A number of plant trimming machines are placed side by side. These plant trimming machines trim leaves from a plant. A sensor detects when one or more of the plant trimming machines are added or removed from the system. A processor then balances a load of plants to be trimmed to be split between the currently available number of plant trimming machines.

Embodiments of the present invention pertain to a tiltable tumbler for use in a plant trimming machine. Plants are placed in a tumbler. As the tumbler rotates, leaves extending through slots in the tumbler by a vacuum are trimmed off. A mechanism is used to adjust the tilt of the tumbler. Thereby, the rate by which the plant material in the tumbler is processed is faster with a higher tilt or slower with a lower tilt. The degree of tilt is adjustable either manually or automatically via a computer.

There is provided a method for enhanced extraction of cannabis oil from a cannabis plant material, and a free-flowing powder consisting of particles of cannabis plant material for use in such method for enhanced extraction. The cannabis plant material is characterized by a cannabis strain and a cannabis plant part. The method comprising a step of comminuting said cannabis plant material to a powder of a preselected particle size distribution (PSD) characterized by 10≤Dv(90)≤100 μm as determined by laser diffraction particle size analysis prior to extraction process. The PSD is preselected in accordance with said cannabis strain and said plant part.

There is provided a method for enhanced extraction of cannabis oil from a cannabis plant material, and a free-flowing powder consisting of particles of cannabis plant material for use in such method for enhanced extraction. The cannabis plant material is characterized by a cannabis strain and a cannabis plant part. The method comprising a step of comminuting said cannabis plant material to a powder of a preselected particle size distribution (PSD) characterized by 10≤Dv(90)≤100 μm as determined by laser diffraction particle size analysis prior to extraction process. The PSD is preselected in accordance with said cannabis strain and said plant part.

There is provided a method for enhanced extraction of cannabis oil from a cannabis plant material, and a free-flowing powder consisting of particles of cannabis plant material for use in such method. The cannabis plant material is characterized by a cannabis strain and a cannabis plant part. The method including a step of comminuting the cannabis plant material to a powder of a preselected particle size distribution (PSD) characterized by 10≤Dv(90)≤100 μm as determined by laser diffraction particle size analysis prior to the extraction process, whereby the PSD is preselected in accordance with cannabis strain and the plant part.

There is provided a method for enhanced extraction of cannabis oil from a cannabis plant material, and a free-flowing powder consisting of particles of cannabis plant material for use in such method. The cannabis plant material is characterized by a cannabis strain and a cannabis plant part. The method including a step of comminuting the cannabis plant material to a powder of a preselected particle size distribution (PSD) characterized by 10≤Dv(90)≤100 μm as determined by laser diffraction particle size analysis prior to the extraction process, whereby the PSD is preselected in accordance with cannabis strain and the plant part.

A foundry dust compound reinforcing filler for natural rubber contains 40-80 parts by weight of foundry dust, 10-40 parts by weight of silica and 10-40 parts by weight of Carbon black. A method for preparing a foundry dust compound reinforcing filler for natural rubber includes the steps of sieving, iron removal, pickling, precipitation, primary grinding, mixing, secondary grinding, granulation and the like. The foundry dust compound reinforcing filler used for reinforcing natural rubber is easy to disperse in natural rubber. The compound reinforcing filler has excellent reinforcing effect, which realizes the resource utilization of casting dust waste and reduces the consumption of silica and carbon black.