Slotted screen for digester

Details Slotted screen for digester Slotted screen for digester

D - Textiles, Paper

21

C

D21C 7/00 (2006.01)

Patent

CA 2436449

A screen panel for a wood-chip digester, comprises a screen plate having a plurality of slots therein that are curved in the form of an arc. Each slot has a generally parallel-sided middle portion in the middle of the thickness of the screen plate, which middle portion has a width in the range of from 3 mm to 10 mm, and a portion that tapers out at an angle on each side of the middle portion, at a half angle in the range of from 10° to 20°, for approximately one quarter of the thickness of the plate. All of the slots have their concave sides facing in the upstream direction of chip flow in the digester.

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