B - Operations – Transporting – 02 – C
Patent
B - Operations, Transporting
02
C
241/60
B02C 13/20 (2006.01) B02C 13/282 (2006.01) B02C 17/00 (2006.01) B02C 21/00 (2006.01) B02C 23/24 (2006.01) C08B 11/00 (2006.01) C08B 11/20 (2006.01)
Patent
CA 2003771
HOE 88/F 389 Abstract of the disclosure: Process and equipment for careful grinding and simul- taneous drying of moist cellulose ether products The present invention relates to a process for careful grinding and simultaneous drying of moist cellulose ether products, wherein a) a moist cellulose ether is introduced by means of a transport gas into a circular space, b) the moist cellulose ether is impact-communited while being circulated, c) the product is simultaneously friction-comminuted in the direction opposite to that of the impact com- minution, d) the peripheral speed of the comminution stages, which operate in opposite directions, being regu- lated to such a value that the resulting grinding energy dries the product to a predetermined residual moisture content, e) the ground material is conveyed onwards by the gas stream introduced into the comminution spaces, f) the ground material is separated from the gas stream and, if desired, g) the ground material is subjected to selective screening. The invention also relates to equipment for carrying out the process. (Figure 5)
Donges Reinhard
Sponheimer Manfred
Welt Gunther
Ziegelmayer Manfred
Fetherstonhaugh & Co.
Hoechst Aktiengesellschaft
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