EP 1100605 A1 20010523 - THICKENER
Title (en)
THICKENER
Title (de)
EINDICKER
Title (fr)
EPAISSISSEUR
Publication
Application
Priority
- DE 9900359 W 19990210
- DE 19805593 A 19980212
Abstract (en)
[origin: US6514381B1] Methods and corresponding devices are set forth for the continuous mechanical dewatering of aqueous suspensions or elutriations, particularly of waste-paper suspensions or slurries, between an endless mesh band and an endless compression surface having a closed, smooth surface and running in the direction of operation. The suspension cake to be dewatered is compressed between the mesh band and the compression surface. The requisite pressure is achieved by wrapping the mesh band around the cylindrical compression surface under longitudinal tension, whereby the expelled water is removed from the suspension cake by means of the mesh band. Devices are provided which both increase the operational duration of the dewatering pressure of the existing mesh band on the suspension cake, and at the same time increase the pressure substantially, without obstructing the runoff of the pressed-out water. The method of the invention increases the compression pressure from about 1 bar (heretofore) to a pressure of, e.g., up to 100 bars, and also permits integration into existing dewatering processes in order to increase the solid matter content, without thereby substantially increasing the equipment space or the operational complexity.
IPC 1-7
IPC 8 full level
B01D 33/04 (2006.01); B01D 33/052 (2006.01); B30B 9/24 (2006.01); D21C 9/18 (2006.01)
CPC (source: EP US)
B30B 9/241 (2013.01 - EP US); D21C 9/18 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE CH DE DK ES FI FR GB IT LI NL
DOCDB simple family (publication)
US 6514381 B1 20030204; AT E293487 T1 20050515; CA 2320997 A1 19990819; DE 19805593 A1 19990819; DE 59911950 D1 20050525; EP 1100605 A1 20010523; EP 1100605 B1 20050420; ES 2242390 T3 20051101; WO 9940994 A1 19990819
DOCDB simple family (application)
US 60017000 A 20001227; AT 99914409 T 19990210; CA 2320997 A 19990210; DE 19805593 A 19980212; DE 59911950 T 19990210; DE 9900359 W 19990210; EP 99914409 A 19990210; ES 99914409 T 19990210