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1. (WO1985004433) METHOD AND APPARATUS FOR PROCESSING MATERIAL SUSPENSIONS
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1985/004433 International Application No.: PCT/SE1985/000066
Publication Date: 10.10.1985 International Filing Date: 11.02.1985
IPC:
D21D 1/22 (2006.01) ,D21D 5/02 (2006.01)
D TEXTILES; PAPER
21
PAPER-MAKING; PRODUCTION OF CELLULOSE
D
TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE
1
Methods of beating or refining; Beaters of the Hollander type
20
Methods of refining
22
Jordans
D TEXTILES; PAPER
21
PAPER-MAKING; PRODUCTION OF CELLULOSE
D
TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE
5
Purification of the pulp suspension by mechanical means; Apparatus therefor
02
Straining or screening the pulp
Applicants:
SUNDS DEFIBRATOR AKTIEBOLAG [SE/SE]; S-851 94 Sundsvall, SE (AllExceptUS)
DE RUVO, Alf, Romano [SE/SE]; SE (UsOnly)
ERIKSSON, Erik, Helmer [SE/SE]; SE (UsOnly)
Inventors:
DE RUVO, Alf, Romano; SE
ERIKSSON, Erik, Helmer; SE
Agent:
ILLUM, Leif-Otto; Svenska Cellulosa Aktiebolaget SCA Kungsgatan 33 S-111 56 Stockholm, SE
Priority Data:
8401846-403.04.1984SE
Title (EN) METHOD AND APPARATUS FOR PROCESSING MATERIAL SUSPENSIONS
(FR) PROCEDE ET APPAREIL DE TRAITEMENT DE MATERIAUX EN SUSPENSION
Abstract:
(EN) By means of a screen device (50, 70) particles contained in the suspension are separated into accept and, respectively, reject. Particles above a definite size are passed directly to a refiner comprising two refiner members (10, 20), which are rotatable relative to each other and between themselves define a diverging gap (22). After the refining, these particles are returned via a return conduit (80) to the inlet end of the screen device (50, 70) for repeated separation. The material suspension supplied is thereby in its entirety converted to accept, which in controlled manner is discharged from the apparatus.
(FR) Grâce à un dispositif à vis (50, 70), les particules contenues dans la suspension sont séparées en particules respectivement acceptées et rejetées. Les particules dont la taille est supérieure à une taille définie passent directement à un dispositif de raffinage comportant deux organes de raffinage (10, 20), pouvant tourner l'un par rapport à l'autre et déterminant entre eux un intervalle divergent. Après leur raffinage, ces particules sont ramenées via une conduite de retour (80) à l'extrémité d'admission du dispositif à vis (50, 70) afin de répéter la séparation. Le matériau en suspension amené est ainsi entièrement converti en un matériau accepté qui est déchargé de manière régulée de l'appareil.
Designated States: AU, FI, JP, NO, US
European Patent Office (AT, DE, FR, GB, SE)
Publication Language: English (EN)
Filing Language: English (EN)
Also published as:
FI863998NO19854832EP0207937DE000000207937AU1985039349