FAN MILL Russian patent published in 2019 - IPC B02C13/00 

FIELD: technological processes.

SUBSTANCE: invention can be used in coal milling technology and chemical technology. Device includes an inlet pipe connected to the inlet pipe adjacent to snail case (3) of the fan mill with inlet pipe (4) of the separator installed thereon, connected to separation chamber (5) with separation elements (7) placed on its inlet window (6). Separation chamber (5) is also connected via the return point of ground fuel (8) to separator inlet pipe (4), and in upper part thereof – to dust outlet (9). In the lower part of separation chamber (5), an additional return point for unmilled fuel (10) is installed, which is connected to the mill inlet. Regulating valve (11) is installed between the return points of ground fuel (8, 10) with the possibility of adjustable simultaneous connection of separation chamber (5) with separator inlet pipe (4) and the mill inlet pipe.

EFFECT: improving the efficiency of fuel milling, regulation of the amount of return of ground particles to the mill impeller.

1 cl, 2 dwg