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1. (WO2007006368) METHOD FOR LOADING FIBERS CONTAINED IN A PULP SUSPENSION
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/2007/006368 International Application No.: PCT/EP2006/004922
Publication Date: 18.01.2007 International Filing Date: 24.05.2006
IPC:
D21H 17/70 (2006.01) ,D21C 9/00 (2006.01)
D TEXTILES; PAPER
21
PAPER-MAKING; PRODUCTION OF CELLULOSE
H
PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C, D21D84; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G97; PAPER NOT OTHERWISE PROVIDED FOR
17
Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
63
Inorganic compounds
70
forming new compounds in situ, e.g. within the pulp or paper, by chemical reaction with other substances added separately
D TEXTILES; PAPER
21
PAPER-MAKING; PRODUCTION OF CELLULOSE
C
PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE- CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
9
After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters
Applicants:
VOITH PATENT GMBH [DE/DE]; St. Pöltener Str. 43 89522 Heidenheim, DE (AllExceptUS)
PFALZER, Lothar [DE/DE]; DE (UsOnly)
DOELLE, Klaus [DE/DE]; DE (UsOnly)
Inventors:
PFALZER, Lothar; DE
DOELLE, Klaus; DE
Priority Data:
10 2005 032 383.912.07.2005DE
Title (DE) VERFAHREN ZUM BELADEN VON IN EINER FASERSTOFFSUSPENSION ENTHALTENEN FASERN
(EN) METHOD FOR LOADING FIBERS CONTAINED IN A PULP SUSPENSION
(FR) PROCEDE POUR CHARGER DES FIBRES CONTENUES DANS UNE SUSPENSION DE MATIERES FIBREUSES
Abstract:
(DE) Das Verfahren dient zum Beladen einer Faserstoffsuspension (S) mit Calciumcarbonat. Dazu wird z.B. flüssiges Calciumhydroxid als Kalkmilch (7) bei oder vor der zur Bildung des Faserstoffs durchgeführten Auflösung (1 ) zugegeben. Durch Einbringen von gasförmigem Kohlendioxid (8) in die so behandelte Faserstoffsuspension wird in dieser eine chemische Reaktion ausgelöst, bei der fein verteiltes Calciumcarbonat ausgefällt wird. Das Verfahren ist durch die frühzeitige Zugabe von Calciumoxid oder Calciumhydroxid besonders wirtschaftlich und effektiv.
(EN) Disclosed is a method for loading a pulp suspension (S) with calcium carbonate. According to said method, liquid calcium hydroxide is added as lime milk (7) during or before the dissolving process (1) carried out to form the pulp, for example. A chemical reaction in which finely distributed calcium carbonate is precipitated is triggered by introducing gaseous carbon dioxide (8) into the pulp suspension processed in said manner. The inventive method is particularly economical and effective by adding calcium oxide or calcium hydroxide early on.
(FR) L'invention concerne un procédé servant à charger une suspension de matières fibreuses (S) en carbonate de calcium. Ce procédé consiste à ajouter p. ex. de l'hydroxyde de calcium liquide, tel que du lait de chaux (7), pendant ou avant la dissolution (1) mise en oeuvre pour former la matière fibreuse. L'introduction de dioxyde de carbone gazeux (8) dans la suspension de matières fibreuses ainsi traitée déclenche, dans cette dernière, une réaction chimique pendant laquelle du carbonate de calcium finement divisé est précipité. Grâce à l'ajout précoce d'oxyde de calcium ou d'hydroxyde de calcium, ledit procédé est particulièrement économique et efficace.
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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 (ARIPO) (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: German (DE)
Filing Language: German (DE)
Also published as:
EP1904681US20080210391CN101208476CA2614813DE102006003721ID048.0750
IN446/KOLNP/2008