A method and system for magnetic actuated mixing which use magnetic particles, non-magnetic abrasive particles and electromagnetic field to facilitate milling. The method and system use magnetic particles and a generated electromagnetic field to facilitate the milling as well. The method and system can be used in any application that requires the preparation of small-sized particles at either the micro or nano scale, including for example, preparing toners, inks, wax, pigment dispersions and the like.

An agitator ball mill comprises a grinding chamber (1), a rotatably mounted agitator shaft (5), which protrudes into the grinding chamber (1) and on which agitator elements (10, 20, 30), in the form of paddle wheels, are arranged spaced apart from one another axially, and an inlet (6) for supplying material to be ground and grinding bodies and an outlet (7) for removal of the ground material. The agitator elements (10, 20, 30) are constructed in such a way that, during operation, they convey a mixture consisting of material to be ground or dispersed and grinding bodies through their interior outwards away from the agitator shaft (5). In the grinding chamber (1) there are arranged return conveyor elements (17, 27, 37; 47; 57) which are joined to the agitator shaft (5) for conjoint rotation therewith and which convey the mixture laterally alongside and/or between the agitator elements (10, 20, 30) inwards towards the agitator shaft (5).

A method for the production of the present disclosure comprises: a) a step of agitating a mixture containing a material to be ground, beads and a dispersion medium in a bead mill; and b) a step of adjusting the pH of the mixture. This method reduces a contamination caused by grinding process using a bead mill.

A method for the production of the present disclosure comprises: a) a step of agitating a mixture containing a material to be ground, beads and a dispersion medium in a bead mill; and b) a step of adjusting the pH of the mixture. This method reduces a contamination caused by grinding process using a bead mill.

A steel ball for use as grinding media in a mill, and a method of fabricating such ball are disclosed. The steel ball has the following composition, by weight

TABLE-US-00001 Carbon 1.05% 0.05 Silicon 0.55% 0.45 Manganese 0.75% 0.60 Chromium 0.90% 0.60 Molybdenum 0.20% 0.20 Phosphorous 0.15% 0.15 Sulphur 0.015% 0.015 Nickel 0.225% 0.225 Copper 0.225% 0.225 Vanadium 0.05% 0.05 Aluminium 0.05% 0.05
with the balance being iron. The ball has an average surface hardness of 60-65 HRC and an average volumetric hardness of 59-65 HRC. The ball has a tempered martensitic microstructure and is formed by heating a billet, forging the billet to form a substantially spherical ball, quenching and then tempering the ball.

A steel ball for use as grinding media in a mill, and a method of fabricating such ball are disclosed. The steel ball has the following composition, by weight

TABLE-US-00001 Carbon 1.05% 0.05 Silicon 0.55% 0.45 Manganese 0.75% 0.60 Chromium 0.90% 0.60 Molybdenum 0.20% 0.20 Phosphorous 0.15% 0.15 Sulphur 0.015% 0.015 Nickel 0.225% 0.225 Copper 0.225% 0.225 Vanadium 0.05% 0.05 Aluminium 0.05% 0.05
with the balance being iron. The ball has an average surface hardness of 60-65 HRC and an average volumetric hardness of 59-65 HRC. The ball has a tempered martensitic microstructure and is formed by heating a billet, forging the billet to form a substantially spherical ball, quenching and then tempering the ball.

Modular shredding rings for implementation in waste disposers, such as food waste disposers, as well as waste disposers employing such modular shredder rings and related methods of operating and assembling, are disclosed herein. In an example embodiment, a food waste disposer includes a food conveying section, a motor section, and a grinding section that are all supported by or formed within a housing. The grinding section includes a rotating plate and a modular shredder ring, the modular shredder ring including an annular support structure and a plurality of shredder modules mounted upon or coupled to the annular support structure. Additionally, the respective shredder modules are respectively positioned along respective different portions of a radially-inwardly-facing annular surface of the annular support structure. Further, each of the respective shredder modules includes one or more respective first contacting formations that at least partly define one or more respective first spaces.

Modular shredding rings for implementation in waste disposers, such as food waste disposers, as well as waste disposers employing such modular shredder rings and related methods of operating and assembling, are disclosed herein. In an example embodiment, a food waste disposer includes a food conveying section, a motor section, and a grinding section that are all supported by or formed within a housing. The grinding section includes a rotating plate and a modular shredder ring, the modular shredder ring including an annular support structure and a plurality of shredder modules mounted upon or coupled to the annular support structure. Additionally, the respective shredder modules are respectively positioned along respective different portions of a radially-inwardly-facing annular surface of the annular support structure. Further, each of the respective shredder modules includes one or more respective first contacting formations that at least partly define one or more respective first spaces.

A sample crushing device is provided that has a function of stably absorbing vibration of a support member supporting a sample container and vibration of other members which accompanies the vibration. When a rotating shaft 20 is rotated and driven by a rotation driving mechanism, revolving motions of a first support member 12 around an axis line X1 of a rotating shaft 10 and rotational movement of an inclined shaft 20 around an axis line X2 are restrained by a base 10 via first elastic members 14. As a result, the first support member 12 and sample containers 41 are vibrated in plural directions, and samples housed in the sample containers 41 are crushed by crushing media. Vibration of the first support member 12 in plural directions is absorbed by a base 1 via the first elastic members 14 coupled with each of the first support member 12 and the base 1.

A sample crushing device is provided that has a function of stably absorbing vibration of a support member supporting a sample container and vibration of other members which accompanies the vibration. When a rotating shaft 20 is rotated and driven by a rotation driving mechanism, revolving motions of a first support member 12 around an axis line X1 of a rotating shaft 10 and rotational movement of an inclined shaft 20 around an axis line X2 are restrained by a base 10 via first elastic members 14. As a result, the first support member 12 and sample containers 41 are vibrated in plural directions, and samples housed in the sample containers 41 are crushed by crushing media. Vibration of the first support member 12 in plural directions is absorbed by a base 1 via the first elastic members 14 coupled with each of the first support member 12 and the base 1.