AIR-PASSING SEPARATOR Russian patent published in 2007 - IPC B07B7/00 B02C23/08 

FIELD: building industry; mining industry; other industries; devices for grading and separation of the bulk powdery materials.

SUBSTANCE: the invention is pertaining to the devices for grading and separation of the bulk powdery materials, in particular, to the crystalline silicon after its crushing and may be used by the roller mills, the roll mills and the centrifugal mills in many branches of the modern industry. The air-passing separator of the bulk materials contains the body made in the form of the truncated cone with the conical bottom with the branch-pipe. In the body coaxially to it there are the spaced from each other in height and coaxially mounted and dividing the body into the sections the cylindrical collector of the recycled material and two components (the upper one and the lower one) made in the form of the inverse cones with the branch-pipes. The cylindrical collector of the recycled material is made in the form of two cylinders separated by the diaphragm with the hole, in which the pipe of the upward flow is inserted with the clearance. On the upper edge of the pipe, the edge of the upper cylinder of the collector and on the edges of each of the inverse cones there are the mounted vertical blades spaced from each other at the angle and consolidated on the cover. The cover of the upward flow pipe is made solid and consolidated on the pipe, and the covers of the upper cylinder of the collector and the inverse cones are made annular and consolidated on the body. The upward flow pipe and the branch-pipes of the inverse cones are installed coaxially and passing in height of the body through its lower branch-pipe. On the lateral surface of each of section of the body the branch-pipes for the air-mixture withdrawal are installed. The technical result of the invention is the increase of the productivity and efficiency of separation of the milled polydispersed silicon, simplification of system of adjusting and the control over the process.

EFFECT: the invention ensures the increased productivity and efficiency of separation of the milled polydispersed silicon, simplification of system of adjusting and the control over the process.

3 cl, 1 dwg