D - Textiles – Paper – 21 – C
Patent
D - Textiles, Paper
21
C
D21C 9/02 (2006.01)
Patent
CA 2132202
The present invention provides a method for washing a fibre suspension to alter its liquid content. The method includes the first step of feeding the fibre suspension into an undivided annular displacement space that rotates around an axis of symmetry, the displacement space having an outer limiting, permeable surface. The method includes the second step of supplying, with pressure external to the displacement space, a fluid through the permeable outer surface of the displacement space. The method includes the third step of rotating the displacement space with a rotational speed which is sufficient to establish, by centripetal acceleration of the fibre suspension, a fibre layer which is disposed between the fluid supplied through the permeable outer surface of the displacement space and a remaining part of the fibre suspension, the fibre layer providing a pressure against the outer limiting surface of the displacement space which at least essentially balances a pressure from the fluid. The method includes the final step of moving the fibre suspension and the fluid through the displacement space and discharging the fibre suspension and the fluid from the displacement space.
Ekholm Rolf
Jansson Ulf
Borden Ladner Gervais Llp
Kamyr Ab
Metso Fiber Karlstad Ab
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