The working principle of fine powder grinder

Shanghai clirik machinery co., ltd. is very gald to announce that, the new type fine powder grinder has been designed by Clirik engineers and designers. We called it HGM125 three-ring ultrafine fine powder grinder. This type of fine powder grinder is currently being assembled and will be implemented into the existing circuit in order to increase thoughput in the fine powder grinder twofold. During assembly of the fine powder grinder, processing of the 250 tonne high grade gold-bearing sample blocks will continue utilizing the current set up.
 
What is the fine powder grinder, how does it work? In cambridge dictionary, as says that a machine for crushing or cutting something into very small pieces. In my words, a fine powder grinder crushes material between two closely placed, heavy objects like stones. They are rotating with respect to one another so the material gets crushed like in a mortar and pestle.
 
How does the new type of fine powder grinder work?

When the fine powder grinder is at work, all the grinding rollers are rolling in the ring, and the materials are driven to the edge of the turnplate by the centrifugal force and fall down into the grinding chambers where the materials are repeatedly pressed, crushed and grinded by the rollers.

The high-pressure air blower constantly inhales air within the fine powder grinder and, in turn, the air flow with crushed materials are brought to the classifier whose high-speed impeller will screen the airflow: the unqualified particle size will fall and return to the mill for being reground while the qualified particle size mixed with air will go into the cyclone powder collector. Most of the qualified powders will fall an exit from the discharging valve at the bottom; a small proportion of the fine powders, with airflow, moves to the dust cleaner, and clings to the surface of the filter bags. At the same time, the fine powders clinging to the surface fall down by the sudden vibration of the filter bags, which is caused by the instantly ejected high-pressure gas controlled by the pulse valve. The materials from the above two lots are sent by the conveyor at the bottom to get finished powders packed. In addition, filtered clean air will be emitted from the air outlet of muffler in the end.