Jet-type grinding systems for large particles

Details Jet-type grinding systems for large particles Jet-type grinding systems for large particles

1984-03-05

1986-04-15

Goldberg, Howard N.

Solid material comminution or disintegration

Apparatus

Including means applying fluid to material

241 57, 241 791, 241 80, 241 97, 241275, B02G 2330

Patent

active

045822646

ABSTRACT:
A jet-type grinding system for grinding relatively large particles, such as coal and the like, wherein the particles to be ground are entrained in a circulating gaseous vortex in which the particles are caused to pulverize each other, the system including a mill having a grinding chamber succeeded by a classifier section in which smaller ground particles are initially separated from larger ground particles, this classifier section constituting a primary separator, the primary separator being in operative connection with a secondary separator into which ground particles pass from the first separator for additional classification and separation into smaller and larger particles, and a tertiary separator inoperative connection wtih the secondary separator to provide passage from the secondary to the tertiary separator of ground particles for additional classification and separation of smaller from larger particles, the passage of all of the particles from one separator to the other being by centrifugal force, and the secondary separator having a shelf in the centrifugal path of the larger particles to aid in separation of such particles from the smaller particles.

REFERENCES:
patent: 3595486 (1971-07-01), Stepanoff
patent: 3941684 (1976-03-01), Bradbury et al.
patent: 4244528 (1981-01-01), Vlnaty
patent: 4354641 (1982-10-01), Smith

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