The current invention discloses a type of micronized powder for manufacturing sintered Neodymium magnetic material, a target type jet mill pulverization method to prepare the micronized powder, and the resulting pulverized powder. The Neodymium magnet powder created under the method is of sphericity of greater than or equal to 90% and of particle adhesion rate of less than or equal to 10%. A is the diameter of the target center, B is the diameter of the side nozzle, and C is the distance between the target center and the nozzle. The relationship amongst A, B and C is A/B=m(C/A+B), where m ranges from 1 to 7. A velocity of the jet stream from side nozzle is between about 320 m/s to about 580 m/s.

The current invention discloses a type of micronized powder for manufacturing sintered Neodymium magnetic material, a target type jet mill pulverization method to prepare the micronized powder, and the resulting pulverized powder. The Neodymium magnet powder created under the method is of sphericity of greater than or equal to 90% and of particle adhesion rate of less than or equal to 10%. A is the diameter of the target center, B is the diameter of the side nozzle, and C is the distance between the target center and the nozzle. The relationship amongst A, B and C is A/B=m(C/A+B), where m ranges from 1 to 7. A velocity of the jet stream from side nozzle is between about 320 m/s to about 580 m/s.

Silicon seed particles which can be used for producing polycrystalline silicon granules in a fluidized-bed reactor are prepared by a process wherein a milling gas stream is introduced into a chamber containing polycrystalline silicon granules, as a result of which individual particles of the polycrystalline silicon granules are accelerated in such a manner that they collide with other particles of the polycrystalline silicon granules, and in this manner the polycrystalline silicon granules are comminuted, wherein the milling gas stream is introduced into the chamber by at least one jet nozzle made of hard metal.

An appliance is disclosed for the size-reduction and drying of waste material. An essentially funnel-shaped vessel has a cylindrical attachment, on which at least two air inlets for introducing compressed air (L) are arranged in a manner distributed over a periphery of the cylindrical attachment, with an exit opening for size-reduced material (G) on a base of the funnel-like vessel. An air outflow opening is larger in diameter than the exit opening and lies opposite the exit opening. An ultrasonic nozzle with a Venturi function arranged on each of the at least two air inlets which are distributed over the periphery of the cylindrical attachment such that fed air (L) will be introduced in a peripheral direction of the cylindrical attachment and of the funnel-shaped vessel.

An appliance is disclosed for the size-reduction and drying of waste material. An essentially funnel-shaped vessel has a cylindrical attachment, on which at least two air inlets for introducing compressed air (L) are arranged in a manner distributed over a periphery of the cylindrical attachment, with an exit opening for size-reduced material (G) on a base of the funnel-like vessel. An air outflow opening is larger in diameter than the exit opening and lies opposite the exit opening. An ultrasonic nozzle with a Venturi function arranged on each of the at least two air inlets which are distributed over the periphery of the cylindrical attachment such that fed air (L) will be introduced in a peripheral direction of the cylindrical attachment and of the funnel-shaped vessel.

The invention is a method for producing milled elastomer, comprising the steps of directing a liquid jet from at least one nozzle on an elastomeric material moving in an at least partially transversal direction with respect to the discharge direction of the at least one nozzle. In the method according to the invention the liquid jet directed on the elastomeric material has a pressure of 650-1350 bar, and the elastomeric material is moved with respect to the at least one nozzle such that, in a first phase adapted for disintegrating a surface of the elastomeric material, the elastomeric material has a first forward-feed rate of 10 to 20 mm/s at a point of impact of the liquid jet in a direction transverse to the discharge direction, and, in a second phase after disintegrating the surface, the elastomeric material has a second forward-feed rate being decreased with 35-65% compared to the first forward-feed rate. The invention is, furthermore, an apparatus for producing milled elastomer.

The invention is a method for producing milled elastomer, comprising the steps of directing a liquid jet from at least one nozzle on an elastomeric material moving in an at least partially transversal direction with respect to the discharge direction of the at least one nozzle. In the method according to the invention the liquid jet directed on the elastomeric material has a pressure of 650-1350 bar, and the elastomeric material is moved with respect to the at least one nozzle such that, in a first phase adapted for disintegrating a surface of the elastomeric material, the elastomeric material has a first forward-feed rate of 10 to 20 mm/s at a point of impact of the liquid jet in a direction transverse to the discharge direction, and, in a second phase after disintegrating the surface, the elastomeric material has a second forward-feed rate being decreased with 35-65% compared to the first forward-feed rate. The invention is, furthermore, an apparatus for producing milled elastomer.

A method embodiment involves preparing single metal or mixed transition metal chalcogenide using exfoliation of two or more different bulk transition metal dichalcogenides in a manner to form an intermediate hetero-layered transition metal chalcogenide structure, which can be treated to provide a single-phase transition metal chalcogenide.

A method embodiment involves preparing single metal or mixed transition metal chalcogenide using exfoliation of two or more different bulk transition metal dichalcogenides in a manner to form an intermediate hetero-layered transition metal chalcogenide structure, which can be treated to provide a single-phase transition metal chalcogenide.

A method for manufacturing a water absorption treatment material made of a plurality of grains includes a preparing step, a pulverizing step, a core portion forming step, and a coating portion forming step. The preparing step is a step of preparing a paper powder to which water-absorbent polymers adhere, the paper powder being derived from a sanitary product. The pulverizing step is a step of pulverizing remaining polymers using a pulverizer. The core portion forming step is a step of forming a core portion constituting each of the grains The coating portion forming step is a step of forming a coating portion so as to cover the core portion, the coating portion containing the paper powder, and the remaining polymers pulverized in the pulverizing step. In the pulverizing step, the remaining polymers left in a state of adhering to the paper powder are subjected to the pulverizer.