Advantages of jet mill in the process of disintegrating and disaggregating agglomerated powder

During the crushing process, the mineral material absorbs a large amount of mechanical energy or thermal energy, so that the surface of the new ultrafine particles has a relatively high surface energy, and the particles are in an extremely unstable state. In order to reduce the surface energy of particles, they tend to reach a stable state by gathering close together, and it is also easy to cause particle agglomeration. Therefore, in the processing of ultra-fine powder, dispersing and disaggregating is also an important link, and there are many equipment used to disperse ultra-fine powder, and jet mill is one of them. Jet mill is often used for dry dispersion of agglomerated powder. Its advantages are high particle size reduction rate, no damage to the original morphology of particles, and strict control of large particles.

There are many types of jet mills, and they are also widely used for ultrafine grinding of materials below medium hardness. Its biggest feature is large output, narrow particle size distribution, and low product contamination. In the process of disaggregation and disaggregation of jet mill, agglomerated or agglomerated materials are fed into the dispersing cavity through the screw feeder, and the materials are impacted and sheared by the high-speed rotating rotor to crush and restore the materials. The scattered materials are transported to the material collection area by the ascending airflow, and are collected by the cyclone collector and the pulse dust collector, and the purified air is discharged by the induced draft fan.

Jet mill has the following advantages in the preparation of ultrafine powder by dispersing and disaggregating:

1. Adopting innovative dispersing structure, compared with traditional dispersing machine, the unit energy consumption is reduced by 30%.
2. The crushing and dispersing parts are made of highly wear-resistant materials, with low wear and long service life.
3. The original particle size of the material can be restored after disaggregation and disintegration, and the particle size recovery rate can reach 100%.
4. It can be equipped with an air flow classification device to classify materials with different finenesses during the break-up operation.
5. The crushing rotor is balanced at high speed, and the machine base adopts anti-vibration design, stable operation and minimal vibration.
6. Wide application range: hot air can be introduced to disperse and dry high-humidity materials; inert gas can be input to disperse flammable and explosive materials; cooling system can be added to heat sensitive materials or those with extremely low melting point The materials are broken up.
7. The system adopts negative pressure production, and there is no dust pollution on the production site.
8. Intelligent feedback control, simple operation and stable operation.

Jet mill can be used for calcining agglomerates, viscous, strong agglomeration powders, such as various metal powders, alloy powders, ultra-fine calcined kaolin, water-washed kaolin, nano-calcium carbonate, flame retardants, strontium carbonate, nano-active calcium, pyrophyllite, Precipitating barium sulfate, aluminum oxide, aluminum hydroxide, chemical raw materials, dyes, etc.