Patents
Sitemap › D21 - Paper-making; Production of cellulose › D21D - Treatment of the materials before passing to the paper-making machine › D21D 5 - Purification of the pulp suspension by mechanical means; Apparatus therefor
Patents for D21D 5 - Purification of the pulp suspension by mechanical means; Apparatus therefor (4,157)
06/1996
06/12/1996EP0716181A2 Apparatus for screening scrap material from an aqueous mixture containing recycled paper pulp, and stirring tool for use in this apparatus
06/11/1996US5524770 In a mechanism for screening a stock slurry for making paper
06/05/1996DE3448571C2 Pulp screen drum
05/1996
05/30/1996WO1996016226A1 Apparatus and process for screening a fibre suspension and process for producing paper utilizing the same
05/23/1996WO1996015316A1 Reactor for treating a pulp with a gas comprising a degassing outlet member
05/21/1996US5518584 Device for detecting foreign matter in pulp suspension
05/15/1996EP0711369A1 Method and apparatus for treating filler-containing metarial, such as recycled fibers
05/08/1996EP0610403B1 Liquid reservoir
05/07/1996US5513757 Continuous cut slotted screen basket
05/02/1996WO1996012565A1 Apparatus for treating fibrous suspensions
04/1996
04/30/1996CA1338285C Paper pulp cleaning and classifying screen
04/23/1996US5509536 Method and apparatus for the sorting of fiber suspensions
04/17/1996EP0707109A1 Straining screen, in particular for paper pulp
04/17/1996EP0585418B1 Method and device for separating a suspension, preferably a fibre suspension
04/11/1996WO1996006221A3 A pulp slurry-handling press roll, and twin roll and single roll slurry-handling presses
04/10/1996EP0705936A1 A method of making a screen cylinder, and a screen cylinder
04/10/1996EP0705649A1 Method for manufacturing a flat or centripetal screen
04/10/1996EP0705364A1 Cellulose pulps having improved softness potential and method of making such pulps
04/09/1996US5504987 Device for manufacturing a screening body
04/02/1996US5503323 Screening means with a screening body, and method and device for manufacturing the screening body
04/02/1996CA2053819C Apparatus for screening to remove knots from a fluid borne slurry of fibers and knots
03/1996
03/28/1996DE4432842A1 Fast cost-saving more efficient separator which yields high quality pulp
03/26/1996CA2012771C Method of bleaching cellulose pulp with ozone
03/21/1996WO1996008600A1 Method and device for concentrating a suspension
03/21/1996CA2198591A1 Method and device for concentrating a suspension
03/12/1996US5497886 Screening apparatus for papermaking pulp
03/07/1996WO1996006684A1 Separator for removing impurities from a fluid
02/1996
02/29/1996WO1996006221A2 A pulp slurry-handling press roll, and twin roll and single roll slurry-handling presses
02/28/1996EP0697920A1 Screening apparatus with adjustable hydrofoil portion
02/21/1996EP0541655B1 A device for separating suspensions, preferably containing fibre pulp
02/21/1996CN1117302A Pressurized screen arrangement
02/20/1996US5492225 Sorter having a housing with conical shaped end wall
02/20/1996US5492224 Apparatus and method for extracting impurities from a pulpous slurry
02/15/1996WO1996004421A1 Method and apparatus for screening a fiber suspension
02/14/1996EP0696662A1 Cylindrical screen using a rotor
02/11/1996CA2155393A1 Cylindrical screens equipped with a rotor
02/08/1996DE4427849A1 Disc filter formed from segmental elements for use in the paper industry
02/01/1996WO1996002700A1 Method and apparatus for screening fibrous suspensions
01/1996
01/31/1996EP0694098A1 Means for filtering and fractionation of suspensions containing fibres, fibre fragments, fines and other particles
01/31/1996EP0693976A1 Screening apparatus for papermaking pulp
01/31/1996EP0613509B1 Method of manufacturing a screen product and a screen product manufactured by the method
12/1995
12/19/1995US5476178 Rotor for pressurized hydrodynamic purification of paper pulp and equipment fitted with this rotor
12/19/1995CA2016365C Procedure and means for separating plastic particles electrically from solutions in particular from cellulose and paper fibre solutions
12/13/1995EP0686578A1 High consistency pulp tower
12/13/1995EP0686419A2 Feed means for a disc filter
12/12/1995US5474240 Paper material refining apparatus
12/05/1995US5472095 Screening cylinder
11/1995
11/30/1995DE4417503A1 Fibrous material obtained from sieved stock as a by-product in papermaking
11/29/1995EP0683833A1 Pressurized screen arrangement.
11/28/1995US5470432 Method and arrangement for the treatment of a fiber suspension
11/15/1995EP0681626A1 Process and apparatus for separating fibres from water
11/07/1995CA2069504C Disk screen with compressible spacers and flanged surrounds
11/02/1995EP0602161B1 A method of manufacturing a screening drum
11/02/1995EP0543866B1 Method and apparatus for stabilizing and simplifying an approach flow system for a paper-making machine
10/1995
10/31/1995US5462585 Method and apparatus for separating gas from a gaseous material
10/25/1995CN2210915Y Vertical sand-removing machine for refining pulp
10/25/1995CN2210914Y Vertical and full-dissociation sand-removing machine
10/18/1995EP0677331A1 Centrifugal cleaner
10/18/1995CN2210036Y Apparatus for removing light wt. foreign matter slag
10/17/1995US5458738 Pulp and paper mill
10/10/1995CA2067794C Pulseless screen
09/1995
09/27/1995EP0673454A1 Apparatus for filtering suspensions
09/26/1995CA2013011C Method and means for treating pulp
09/20/1995EP0527893B1 Hydrocyclone assembly
09/06/1995CN1029665C Screen with surface having projections or depressions
09/05/1995US5447632 Hydrocyclone plant
08/1995
08/30/1995EP0668796A1 Adjustable hydrocyclone
08/29/1995US5444884 Controlling screen backflush and wash distribution in a pressure diffuser
08/22/1995US5443737 Rotary drum with radial spray jets
08/22/1995US5443213 Screen apparatus for paper making
08/16/1995CN2205398Y Combined pulp-screening machine
08/15/1995US5441157 Method and device for separating a suspension, preferably a fibre suspension
08/10/1995WO1995021292A1 Method and apparatus for treating recycled pulp
08/10/1995WO1995021288A1 Apparatus for washing of pulp
08/01/1995US5437794 Hydrocyclone with turbulence creating means
08/01/1995US5437784 Injector for a flotation device
08/01/1995US5437170 Washing apparatus
07/1995
07/26/1995EP0531392B1 Screening device
07/25/1995US5435444 Composite type screen
07/25/1995CA2023889C Process for manufacturing a screen basket and screen basket made by this process
07/25/1995CA1336422C Apparatus for dividing a suspension of fibrous cellulose pulp
07/19/1995EP0663469A1 Motor, in particular for a screening apparatus
07/19/1995EP0662858A1 Sieve
07/19/1995CA2140490A1 Rotor for a screen grader
07/18/1995CA2072890C Improved efficiency screen plate for screening pulp
07/11/1995US5431287 Separator screen feeder
07/11/1995CA1336279C Screen and method of manufacture
07/11/1995CA1336278C Wave screen plate and manufacturing methods
07/04/1995CA2042366C Method and device for the production of cellulose pulp of improved quality
06/1995
06/29/1995WO1995017243A1 Device for admixing a processing agent to a pulp suspension
06/29/1995WO1995017235A1 Apparatus and process for pumping and separating a mixture of gas and liquid
06/27/1995CA2024233C Apparatus for removing ash from repulped wastepaper
06/22/1995WO1995016819A1 Method of manufacturing a screen cylinder and a screen cylinder produced by the method
06/21/1995EP0658648A2 Process and apparatus for continuously separating desirable and undesirable substances in a fibrous suspension
06/20/1995CA2029515C Seamless screen cylinder with laser cut openings
06/20/1995CA1335981C Method and apparatus for removal of light material from a fiber suspension
06/14/1995CN1103685A High-concentration de-inking method for waste paper
06/14/1995CA2111147A1 Method of manufacturing a screen cylinder and a screen cylinder produced by the method
06/07/1995EP0515502B1 Apparatus for filtering liquids
05/1995
05/31/1995CN2199231Y Sand removing conical cap
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