Process for grinding and simultaneous drying of moist cellulose

Details Process for grinding and simultaneous drying of moist cellulose Process for grinding and simultaneous drying of moist cellulose

1989-11-22

1990-12-25

Rosenbaum, Mark

Solid material comminution or disintegration

Processes

With application of fluid or lubricant material

241 23, 241 24, 241 27, 241 73, B02C 1912

Patent

active

049796810

ABSTRACT:
The present invention relates to a process for careful grinding and simultaneous drying of moist cellulose ether products wherein a moist cellulose ether is introduced by means of a transport gas into a circular space. The moist cellulose ether is impact-comminuted while being circulated in that space, and the product is simultaneously friction-comminuted in a direction opposite to that of the impact comminution. The peripheral speed of the comminution stages, which operate in opposite directions, is regulated to such a value that the resulting grinding energy dries the product to a predetermined residual moisture content. The ground material is conveyed by the gas stream introduced into the comminution space, and the ground material is then separated from the gas stream. If desired, the ground material is subjected to selective screening.

REFERENCES:
patent: 4044198 (1977-08-01), Kostrzewa et al.
patent: 4076935 (1978-02-01), Eichenseer et al.
patent: 4415124 (1983-11-01), Carduck et al.

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