Patent Number: 7,708,216

Title: High turbulence mill and bi-negative pressure turbine thereof

Abstract: A high turbulence mill used for producing supermicro powder and nanomaterials includes: a driving device provided on a base; a hollow grinding casing having a toothed ring-shaped guide stator fixed to an inner circumference thereof; a bi-negative pressure turbine rotatably mounted within the grinding casing; a hopper for delivering materials into the grinding casing via a material feeding pipe; a material discharging pipe communicated with the grinding casing for discharging pulverized products; and a control device for electrically controlling the high turbulence mill. When the specifically designed bi-negative pressure turbine spins at a high speed within the grinding casing under the driving operation of the motor, strong vortexes and high turbulence will be formed in the grinding casing, and thus a gas-solid two-phase flow is formed. Under the high turbulence, the materials are subjected to violent self-grinding effect, strong impact and strong shear force, and then an accelerated and effective pulverization of the materials is obtained.

Inventors: Yang; Fumao (Lanzhou City, Gansu Province, 730050, CN), Liu; Xingfa (Lanzhou City, Gansu Province, 730050, CN)


International Classification: B02C 19/00 (20060101)

Expiration Date: 5/04/12018