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BS Cryogenic Mill

  • BS
  • Brightsail


Cryogenic grinder uses liquid nitrogen as cooling medium,can grind heat-sensitive material into fine powder,like fruit,vegetable,herb,medicine,plastic and rubber...etc.

And it preserves the nutrition of products very well in cryogenic environment.


Structure Composition

1. Cryogenic  grinder adopts  pre cooling bin to pre cool the material. Pre-cooling silo installs precision  liquid gas gasification and forces materials to be cooled in the process of  liquid gas gasification.

2. Using a  screw feeder to achieve uniform cooled brittle material into the crusher  cavity.

3. Discharge  traction system: Using  air traction to discharge the material which  is crushed by the host through the pipeline.

4. Using  the tilt angle discharge system out of the material,The oblique spiral discharge  system ensures that the air of the cyclone does not flow out of the discharge  port.

5. The  gas mixture from the top of the cyclone separator flows back into the second  cyclone separation, the final separation will have a certain role in the cold  air flow through the pipeline to the main crusher feed inlet.

6. Electrical  control: Using full conversion power supply, control the regional motor speed,  to achieve a wide range of feed speed adjustment; Main line speed  adjustment(Crushing different materials to achieve different particle states  requires different first speeds); Adjust the air traction power; Discharge speed  adjustment and other effects.

7.  Automatic control system: Customers can use the PLC to control the system  balance as needed.To achieve external control of the host pressure relief and  boost function, adjust the liquid nitrogen flow according to the setting  temperature. According to the regional current input speed adjustment, while the  frequency of each district.


1:escalator  2:frame   3:main motor   4:feeding assembly  5:host  6:traction system  7:separation system    

8:oblique discharge system  9:insulation layer(Partially hidden)  10:turn flow  pre-cooling bunker  11:exhaust pipe 12:link pipeline

Working Method

This machine can use microcomputer control unit for volume and the amount of nitrogen. Microcomputer is to set automatic level control system as to customer's requirement, operators just need to set the expected value of fineness, then the intelligent control system will automatically adjust the temperature, the refrigerant valve size, the discharge rate,etc based on the argument point by the host current,chamber pressure machine and pipe flow.



1.  Optimal retention of aroma and strength, in contrast to normal grinding, where  approx.15-43% essential oils are lost, while the loss with cryogenic grinding is  minimal(approx.3-10%).

2.  High grinding fineness,low energy consumption, output is 2-3 times than that of  normal pulverizeing.

3.  According to the temperature of material embrittlement point, adjust the best  crushing temperature.

4.  Material explosion-proof, anti-oxidation,etc.

5.  Trouble-free stable. processing.  

The  machine passes through a high performance liquid gas gasification unit. In the  process of gasification, the refrigerant and the material produce heat  exchange. And the remaining cool air is collected by means of reflux,. Each part  of the use of pipeline valves to adjust the return air conditioning on the  crushing chamber air compensation, material precooling, closed delivery, closed  grading, discharge material backflow, refrigerant usage, power source mechanism,  crushing the transport process has reached the best results insulation.  

In  energy consumption reached the international leading level!

Technical Data

Grind motor(kw)7.545
Input material size(mm)5-15
MediumLiquid nitrogen
Temperature(℃ )-196~0
Fineness(mesh)10~700(depends on materials)
Capacity(kg/h)30~150(depends on material)100~1000(depends on materials)
Grinding chamber φ (mm)180500
Feed and dischargeBy screw feeder


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