Air Jet Mill
Introduction
The air jet mill machine is a form of mechanical milling equipment that employs high-pressure air to accelerate particles to high velocities, causing them to collide with one another at high speeds. This results in the lowering of particle size by impact and attrition. For materials that are susceptible to contamination, heat, or moisture, the method is very helpful in creating fine powders. Depending on the material being processed and the setup of the system, Air Jet Mills can produce very tiny and consistent particle sizes, usually between 1 and 45 micrometers.
Working principle
The Air Jet Mills work by using high-pressure air or gas to accelerate particles to very high speeds, causing them to clash with each other. This results in particle size reduction through collision, shear and friction. Several crucial steps are involved in this process:
A screw feeder or pneumatic conveyor typically delivers the first material to be ground as powder into the air jet mill. A nozzle or nozzles enter high-pressure gas or air into the mill, which accelerates the air to supersonic speed. The particles are transported into the chamber where the grinding process occurs by the air jets. These collisions cause the particles to shatter into smaller pieces because of the impact and shear forces between them.
FAQ
Q: What are the advantages of using the air jet mill machine?
A: The air jet mill machine is suitable for heat-sensitive materials with precise particle size control, no pollution and high efficiency.
Q: What is the typical particle size range that an air jet mill can achieve?
A: Jet grinding can achieve very fine particle sizes, typically ranging from 1 micron to 45 micron, depending on the material and mill configuration.
Q: What is the difference between jet mill and traditional mill?
A: Air Jet Mills use high-speed air to accelerate particles for grinding, while traditional crushers, such as ball mills, use mechanical forces or rotating rollers to grind the material. Jet grinding typically produces finer particles with a narrower size distribution and produces less heat, making them more suitable for heat-sensitive materials.
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