Grinding and shaping method using vertical grinding mill

A grinding and shaping method using a vertical grinding mill, used for grinding and shaping a powder or a granular material, comprising:

• Selecting a vertical grinding mill:
• selecting a vertical grinding mill with thread pitch/diameter ratio of a spiral rotor according to a raw material to be ground;
• Adding a grinding medium:
• selecting the grade of a grinding medium and determining the filling factor according to the requirements of particle sizes of the raw material and ground product, and adding the grinding medium into a grinding chamber of the vertical grinding mill;
• Initiating the vertical grinding mill:
• sequentially initiating a dust collector, an air blowing device, a driving device and a feeding device, wherein the driving device propels the spiral rotor to rotate, and the air blowing device blows upward from bottom of the grinding chamber;
• Adjusting parameters:
• adjusting rotation speed of the spiral rotor of the vertical grinding mill to change cycling speed of the raw material and the grinding medium in the grinding chamber, thereby changing flow rate of the raw material in the grinding chamber;
• Feeding and grinding:
• feeding a raw material into the feeding port at an upper end of the grinding chamber and then grinding the raw material;
• Discharging:
• initiating a discharging device, and discharging the raw material from a discharging port at the lower end of the grinding chamber.