Method and apparatus for comminuting of solid particles

Solid material comminution or disintegration – Processes – With application of fluid or lubricant material

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241 2431, 241 47, 241 56, 241 78, 241 791, 241 793, 241162, B02C 1912, B02C 2324

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active

058268073

ABSTRACT:
A cylindrical vessel has a drive shaft rotatably mounted therein and extending along substantially the entire longitudinal extent thereof. This drive shaft is rotatably driven by a motor at a speed of 3,000-10,000 rpm. The output of a roller mill or the like having particles of the order of -200 mesh to be further comminuted, which may be of coal or other minerals, are fed into the vessel. Connected to the shaft and rotatably driven therewith is a centrifugal compressor fan. This fan with additional air intake to the vessel provides a high velocity air curtain which suspends the particles and drives them upwardly. Mounted above the compressor and rotatably driven by the drive shaft are a plurality of semipermeable screens which comminute the particles to bring them to a superfine state. Particles which are not comminuted to a superfine state are repelled by the screens for further comminution. Fully comminuted particles are passed through an aperture in a fixed plate and fed to collecting cyclones which collect these particles.

REFERENCES:
patent: 911913 (1909-02-01), Snyder et al.
patent: 1524651 (1925-02-01), Hapgood
patent: 2752097 (1956-06-01), Lecher
patent: 4690338 (1987-09-01), Sayler et al.
patent: 4747550 (1988-05-01), Jackering
patent: 5280857 (1994-01-01), Reichner
patent: 5695130 (1997-12-01), Csendes
patent: 5732894 (1998-03-01), Sheahan

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