US PATENT SUBCLASS 241 / 48
.~.~.~ With recirculation of gas to comminuting zone

Current as of: June, 1999
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241 /   HD   SOLID MATERIAL COMMINUTION OR DISINTEGRATION

*  DD  APPARATUS {41}
38  DF  .~ Including means applying fluid to material {7}
47  DF  .~.~ Gas swept comminuting zone {9}
48.~.~.~ With recirculation of gas to comminuting zone

DEFINITION

Classification: 241/48

(under subclass 47) Apparatus in which gas that has left the comminuting zone is recirculated thereto..

(1) Note. The gas may undergo treatment of some form, i.e., heating, cooling, cleaning, etc., before being reapplied to the material or may be used to recirculate insufficiently comminuted material.

SEE OR SEARCH THIS CLASS, SUBCLASS:

52+, for apparatus in which the oversize material, but not the gas current, is recirculated to the comminuting zone.