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Machine translation
1. (WO2006087431) METHOD AND APPARATUS FOR REMOVING FINE IMPURITIES FROM FIBROUS SUSPENSION
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/2006/087431    International Application No.:    PCT/FI2006/050070
Publication Date: 24.08.2006 International Filing Date: 17.02.2006
Chapter 2 Demand Filed:    13.09.2006    
IPC:
D21D 5/24 (2006.01), D21D 5/00 (2006.01), D21D 5/02 (2006.01), D21F 1/70 (2006.01)
Applicants: METSO PAPER, INC. [FI/FI]; Fabianinkatu 9 A, FI-00130 Helsinki (FI) (For All Designated States Except US).
LAMMI, Lari [FI/FI]; (FI) (For US Only).
LAXÉN, Torolf [FI/FI]; (FI) (For US Only).
KOVASIN, Kari [FI/FI]; (FI) (For US Only)
Inventors: LAMMI, Lari; (FI).
LAXÉN, Torolf; (FI).
KOVASIN, Kari; (FI)
Agent: TAMPEREEN PATENTTITOIMISTO OY; Hermiankatu 12 B, FI-33720 Tampere (FI)
Priority Data:
20055073 17.02.2005 FI
Title (EN) METHOD AND APPARATUS FOR REMOVING FINE IMPURITIES FROM FIBROUS SUSPENSION
(FR) PROCEDE ET APPAREIL DESTINES A ELIMINER LES IMPURETES FINES DES SUSPENSIONS FIBREUSES
Abstract: front page image
(EN)A method and an apparatus for removing fine impurities from fibrous suspension, in which method the fibrous suspension is treated in at least two treatment stages (2a, 2b, 2c, 2d, 2e, 2f, 3a, 3b, 3c, 3d, 3e), for forming an accept containing fibers and a reject containing impurities. The treatment stages (2a, 2b, 2c, 2d, 2e, 2f, 3a, 3b, 3c, 3d, 3e) are connected to each other in such a manner that the reject obtained from the preceding treatment stage (2a, 2b, 2c, 2d, 2e, 3a, 3b, 3c, 3d) is led as a feed material for the next treatment stage (2b, 2c, 2d, 2e, 2f, 3b, 3c, 3d, 3e). The treatment stages (2a, 2b, 2c, 2d, 2e, 2f, 3a, 3b, 3c, 3d, 3e) contain at least one first treatment stage (2a, 3a), to which the fibrous suspension to be treated is led and at least one second treatment stage (2b, 3b), wherein the accept obtained from at least one second treatment stage (2b, 3b) is led to at least one additional treatment stage (4, 5) for removing fine impurities from the accept.
(FR)L’invention concerne le procédé et l’appareil destinés à éliminer les impuretés fines des suspensions fibreuses. Selon le procédé, la suspension fibreuse comporte au moins deux étapes de traitement (2a, 2b, 2c, 2d, 2e, 2f, 3a, 3b, 3c, 3d, 3e) destinées à former un accepté contenant des fibres et un rejet contenant des impuretés. Les étapes de traitement (2a, 2b, 2c, 2d, 2e, 2f, 3a, 3b, 3c, 3d, 3e) sont reliées de manière à ce que le rejet obtenu à la suite de l’étape de traitement précédente (2a, 2b, 2c, 2d, 2e, 3a, 3 b, 3c, 3d) devienne un matériau d’alimentation lors de l’étape de traitement suivante (2b, 2c, 2d, 2e, 2f, 3b, 3c, 3d, 3e). Les étapes de traitement (2a, 2b, 2c, 2d, 2e, 2f, 3a, 3b, 3c, 3d, 3e) comprennent au moins une première étape (2a, 3a), vers laquelle la suspension fibreuse à traiter est emmenée, ainsi qu’une deuxième étape de traitement (2b, 3b) pendant laquelle l’accepté obtenu est emmené vers au moins une étape de traitement supplémentaire (4, 5) afin d’en éliminer les impuretés fines.
Designated States: AE, AG, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BW, BY, BZ, CA, CH, CN, CO, CR, CU, CZ, DE, DK, DM, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KN, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, LY, MA, MD, MG, MK, MN, MW, MX, MZ, NA, NG, NI, NO, NZ, OM, PG, PH, PL, PT, RO, RU, SC, SD, SE, SG, SK, SL, SM, SY, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, YU, ZA, ZM, ZW.
African Regional Intellectual Property Organization (BW, GH, GM, KE, LS, MW, MZ, NA, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HU, IE, IS, IT, LT, LU, LV, MC, NL, PL, PT, RO, SE, SI, SK, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG).
Publication Language: English (EN)
Filing Language: Finnish (FI)