A grinding and shaping method using a vertical grinding mill, comprising: selecting a vertical grinding mill with thread pitch/diameter ratio of a spiral rotor; selecting the grade of a grinding medium and determining the filling factor and adding the grinding medium into a grinding chamber of the vertical grinding mill; sequentially initiating a dust collector, an air blowing device, a driving device and a feeding device, wherein the driving device propels the spiral rotor to rotate, and the air blowing device blows upward from bottom of the grinding chamber; adjusting rotation speed of the spiral rotor of the vertical grinding mill to change cycling speed of the raw material and the grinding medium in the grinding chamber; feeding a raw material into the feeding port at an upper end of the grinding chamber; initiating a discharging device, and discharging the raw material from a discharging port.

A freely moving grinding media adapted to measure one or more physical characteristics of a comminution apparatus during operation or a charge therein is disclosed. The grinding media comprises a freely moving grinding body with a bore disposed in an outer body portion of the body. A sensor body is configured to be received in the bore. The sensor body comprises a rigid sleeve, a resilient core and a sensor array embedded in the core of resilient material. A system of optimising performance of a comminution circuit is also disclosed. The system comprises a comminution apparatus in response to one or more physical characteristics of the comminution apparatus or the charge contained therein, measured during operation of the comminution apparatus. The system comprises a plurality of the freely moving grinding media. A method of optimising performance of a comminution circuit is also disclosed.

A feed system for feeding grinding bodies to a vertical mill includes a pumping unit for sucking a propulsion liquid from a source and for supplying the liquid under pressure into a discharge tube. The system includes an intake connection having an inlet for grinding bodies, an inlet for propulsion liquid, connected to the discharge tube, and an outlet for grinding bodies and propulsion liquid. A principal tube is connected to the outlet of the intake connection for receiving the propulsion liquid and grinding bodies from the tubular intake connection. A static screen is arranged in the feed of the vertical mill for separating grinding bodies from propulsion liquid, the static screen having an inlet for propulsion liquid and grinding bodies, connected to the principal tube, an outlet for grinding bodies to be fed to the vertical mill, and an outlet for propulsion liquid separated from the grinding bodies.

A feed system for feeding grinding bodies to a vertical mill includes a pumping unit for sucking a propulsion liquid from a source and for supplying the liquid under pressure into a discharge tube. The system includes an intake connection having an inlet for grinding bodies, an inlet for propulsion liquid, connected to the discharge tube, and an outlet for grinding bodies and propulsion liquid. A principal tube is connected to the outlet of the intake connection for receiving the propulsion liquid and grinding bodies from the tubular intake connection. A static screen is arranged in the feed of the vertical mill for separating grinding bodies from propulsion liquid, the static screen having an inlet for propulsion liquid and grinding bodies, connected to the principal tube, an outlet for grinding bodies to be fed to the vertical mill, and an outlet for propulsion liquid separated from the grinding bodies.

A method for the cryogenic grinding of at least one powder comprising the following steps: (a) introducing a cryogenic fluid into an attrition mill comprising attrition means, (b) introducing the powder or powders into the attrition mill, and (c) setting the attrition mill in rotational motion, and whereinthe ratio V.sub.MA/(V.sub.MA+V.sub.FC) of the volume of the attrition means V.sub.MA to the sum of the volume of the attrition means V.sub.MA and the volume of the cryogenic fluid VFC is comprised between 0.2 and 0.8, and the rotational speed of the attrition mill during step (c) is between 100 rpm and 20,000 rpm. Further, particles of metal or metal alloy, to the use thereof, to a coating method employing them and to the use of such a coated material.

A grinding media handling system for a vertical grinding mill comprises: a reservoir; a pump, such as a sump pump or a horizontal pump, for pumping water and/or a slurry of material to be ground from the reservoir via an inlet in an upper section of the vertical grinding mill into a grinding chamber of the mill; means for adding grinding media to the water and/or slurry upstream and/or downstream of the pump; and means for discharging slurry and grinding media from a lower section of the vertical mill.

Provided is a method of producing pellets of a graphene-polymer composite, the method comprising: (a) mixing multiple particles of a graphitic material and multiple particles of a solid polymer carrier material to form a mixture in an impacting chamber of an energy impacting apparatus; (b) operating the energy impacting apparatus with a frequency and an intensity for a length of time sufficient for peeling off graphene sheets from the graphitic material particles and transferring the graphene sheets to surfaces of the solid polymer carrier material particles to produce graphene-coated polymer particles inside the impacting chamber; and (c) feeding multiple graphene-coated polymer particles into an extruder to produce filaments of an extruded graphene-polymer composite and operating a cutter or pelletizer to cut the filaments into pellets of graphene-polymer composite. The process is fast (hours as opposed to days of conventional processes), environmentally benign, cost effective, and highly scalable.

A grinding media adapted to measure one or more physical characteristics of a comminution apparatus during operation or a charge therein is disclosed. The grinding media includes a freely moving grinding body with a bore disposed in an outer body portion of the body. A sensor body is configured to be received in the bore. The sensor body comprises a rigid sleeve, a resilient core and a sensor array embedded in the core of resilient material. A system for optimizing performance of a comminution circuit is also disclosed. The system includes a comminution apparatus varied in response to one or more physical characteristics of the comminution apparatus or the charge contained therein, measured during operation of the comminution apparatus. The system comprises a plurality of the adapted to measure grinding media. A method of optimizing performance of a comminution circuit is also disclosed.

One embodiment of a media handling system (5) is disclosed for mixing and or entraining grinding media (15) with a liquid media (10) for supply to a selected destination (D). In one form, the system (5) comprises a first media transfer module (30) configured operable for providing a flow of liquid media (10) having a respective flow condition to a first inlet (11) by way of which liquid media is receivable by the system (5). The system (5) comprises a second media transfer module (25) arranged in fluid communication with and downstream of both of the first inlet (11) and a second inlet (16) by way of which grinding media (15) is receivable by the system (5). The second media transfer module (25) is configured operable for supplying to the selected destination (D) a mixed flow of liquid and grinding media having a respective flow condition. In operation, one or both of the first (30) and second media transfer modules (25) are configured operable relative to the other for modifying one or both of the respective flow conditions so as to be operable or cooperable for facilitating a drawing or urging of a flow of the grinding media (15) into the system (5) via the second inlet (16) for controllably modifying a concentration of grinding media in the mixed flow of liquid and grinding media so as to converge toward and or substantially maintain a target concentration of grinding media (15) determined to be suitable for enabling supply of the mixed flow to the selected destination (D) by the second media transfer module (25).

The present disclosure relates to a method of making nanoparticles from glass, the method including: gathering glass waste; hammering the glass waste into ready to grind pieces; adding an amount of the ready to grind pieces into a grinding bowl; adding steel balls to the grinding bowl; grinding the ready to grind pieces; and obtaining a powder containing the nanoparticles.