Hydrocyclone is a common classification beneficiation equipment, with unique structure design adopts the composite structure of multi section type column body. It changes the height of column according to the need. If the height increased, overflow fineness increase up to about 10 μm diameter. Each diameter has unique cylinder length and cone angle, which can achieve the maximum tangential velocity at the minimum total cyclone length, so as to increase centrifugal force and improve the classification efficiency.