A sediment separator – often also called sand separator – removes sand or other heavy solids from liquids. In a paper mill, those liquids are mainly filtrates from HD cleaners. The principle is quite simple: the feed flow is fed to a sedimentation tank where the heavy particles settle at the bottom; the settled particles are conveyed upwards by an inclined, shaftless screw while being dewatered further; and the dewatered solids drop off at the top of the screw where they are typically collected in a container.
ANDRITZ Sediment Separator ReSed-F
Recycling Sediment Separator ReSed-H
With the ReSed-F, a huge leap forward can be achieved in efficiency thanks to optimization of the sedimentation tank geometry and the internal flow pattern.
The ANDRITZ ReSed-H is a robust sediment separator for drainage of heavy rejects with high volume flows created by pulper junk traps and the like. The entire volume coming from discontinuous junk traps is fed into the vat all at once. The water is drained off efficiently, and heavy rejects are removed by a sturdy, shaftless screw (diameter 600 mm) and brought to a container for further treatment or disposal.
Working principle of the ANDRITZ ReSed-F
Working principle of the ANDRITZ ReSed-H
