At  normal temperature, some sensitive or sticky or elastic materials cannot be ground to a fine-grained powder, even when the grinding media are run at high speed. This grinding mill with liquid nitrogen adopts outer media freezing method to pulverize the materials to realize the heat exchange between material and liquid nitrogen, which can produce remarkably high fineness and is eminently suited to the size reduction of particularly difficult materials. The specific nitrogen consumption is dependent on the product and fineness.
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.