A method for regenerating an NOx removal catalyst, which includes connecting an upstream fixing member (10) to one end of a member to be ground, and connecting a downstream fixing member (20) to the other end; connecting a mixing part (40) for mixing an abrasive with a gas to an upstream portion of the upstream fixing member, and disposing a screen member in the expanded part, and connecting a classification part (70) and a dust-collecting part (80) to the downstream fixing member; and transferring the abrasive which has been mixed with the gas from the mixing part to the upstream fixing member, reducing the flow rate of the mixture in the expanded part, subsequently, causing the mixture to pass through the through-hole of the NOx removal catalyst and the downstream fixing member, and then collecting dust by means of the dust-collecting part via the classification part.

A processing apparatus of an embodiment includes a stage that can have a sample placed thereon, a rotation mechanism that rotates the stage, a first nozzle that injects a substance onto the sample, and a second nozzle that supplies fluid to the rotation center of the sample.

An abrading device includes a funnel and an outlet orifice disposed within the funnel for passage of abrasive material, where a distance between the outlet orifice and a bottom end of the funnel is adjustable. An exhaust tube is coupled to the funnel for withdrawal of spent abrasive material from the funnel.

A method for treating a surface of a fibre composite component, wherein an abrasive removal of the surface of the fibre composite component takes place by blasting a removing agent transported by a gaseous transporting fluid onto the surface of the fibre composite component by a feed nozzle and a suction extraction of the removing agent and material removed by the removing agent takes place by an extraction nozzle arranged in the region of the feed nozzle.

A paint stripping system and method of use is described herein. The paint stripping system can comprise a blaster, a buggy, and a dust collector. The blaster can comprise an upper seal, one or more propeller assemblies, one or more recirculators, and one or more motor assemblies. The upper seal can be at the top surface of the blaster. The upper seal can be positionable under an overhead surface such that waste materials and abrasive material that is produced during operation is collected within the blaster. The propeller assemblies can be mounted within the blaster. The propeller assemblies can propel the abrasive material towards the overhead surface. The recirculators can recycle collected abrasive material. The motor assemblies can actuate the propeller assemblies. The buggy can mount the blaster. The buggy can comprise a scissor lift, and a steering system.

A system and method for blasting an overhead surface is disclosed herein. The blaster system can comprise a first enclosure, a second enclosure, a pair of recirculators, a pair of loader valves, and a pair of propeller assemblies. The first enclosure can comprise a pair of primary ports, and a pair of control cages. The pair of primary ports can be at the front surface of the first enclosure. The primary ports can receive abrasive material. The pair of control cages can be attached at the bottom surface of the first enclosure forming a pair of curved surfaces, and a plurality of gaps. Each of the curved surface can comprise a slot. Each end of the slot can rest within each of the gaps such that the abrasive material received within the first enclosure can collect within the gaps and falls into the slot.

A system for internal air blasting of an enclosed space includes a ground vehicle, an arm supported by the ground vehicle, and a blasting nozzle provided at the end of the arm. The blasting nozzle being configured to direct blast media to a desired surface of the enclosed space to be treated by the arm. A method of internal air blasting an enclosed space is further disclosed.

A hand-held ejector tool for ejecting a pressurized stream of abrasive materials and a hopper assembly for use in the same is provided. The hand-held ejector tool includes a pressurized air source, a hopper assembly and a delivery conduit for ejecting a pressurized stream of abrasive material. The hopper assembly includes a containment area to store an abrasive material, an air conduit to receive pressurized air from the pressurized air source, a one-way valve to provide the pressurized air into an upper portion of the containment area, and a mixing device to mix the abrasive material and the pressurized air to create a pressurized stream of abrasive material. The delivery conduit may include a stylus to permit a controllable ejection the pressurized stream of abrasive material.

A hand-held ejector tool for ejecting a pressurized stream of abrasive materials and a hopper assembly for use in the same is provided. The hand-held ejector tool includes a pressurized air source, a hopper assembly and a delivery conduit for ejecting a pressurized stream of abrasive material. The hopper assembly includes a containment area to store an abrasive material, an air conduit to receive pressurized air from the pressurized air source, a one-way valve to provide the pressurized air into an upper portion of the containment area, and a mixing device to mix the abrasive material and the pressurized air to create a pressurized stream of abrasive material. The delivery conduit may include a stylus to permit a controllable ejection the pressurized stream of abrasive material.

A waterjet system is provided, including a pump configured to pump fluid, an electric motor configured to drive the pump, a hopper configured to store abrasive, and a mixing chamber configured to mix abrasive from the hopper and the fluid from the pump to produce a slurry. A cutting bed is configured to receive a workpiece to be cut. A cutting head is configured to expel the slurry through the outlet nozzle as a high-velocity jet into the cutting bed.