EP0497671A1 - Verfahren zur Raffinierung einer Fasersuspension - Google Patents
Verfahren zur Raffinierung einer Fasersuspension Download PDFInfo
- Publication number
- EP0497671A1 EP0497671A1 EP92400190A EP92400190A EP0497671A1 EP 0497671 A1 EP0497671 A1 EP 0497671A1 EP 92400190 A EP92400190 A EP 92400190A EP 92400190 A EP92400190 A EP 92400190A EP 0497671 A1 EP0497671 A1 EP 0497671A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- refining
- paper pulp
- silica sol
- silica
- weight
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
- D21B1/00—Fibrous raw materials or their mechanical treatment
- D21B1/04—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres
- D21B1/12—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by wet methods, by the use of steam
- D21B1/14—Disintegrating in mills
- D21B1/16—Disintegrating in mills in the presence of chemical agents
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21D—TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE
- D21D1/00—Methods of beating or refining; Beaters of the Hollander type
- D21D1/20—Methods of refining
Definitions
- the present invention relates to a new process for refining paper pulp.
- refining is an essential operation which consumes more energy the higher the desired refining index.
- the method according to the present invention is characterized in that it is carried out in the presence of a colloidal silica sol.
- colloidal silica sol designates aqueous suspensions of elementary silica particles having an average diameter of less than 100 nm and which are not agglomerated with one another. These silica soils are common commercial products such as those marketed by the applicant under the name KLEBOSOL.
- the process described above is carried out in the presence of a colloidal silica sol, the elementary particles of which have an average diameter of between approximately 10 nm and 50 nm.
- the process according to the invention will preferably be carried out in the presence of 1 to 50% by weight of silica colloidal expressed in dry relative to the weight of the paper pulp also expressed in dry.
- the silica sol and the pulp to be refined are mixed, for example by incorporating said silica into the paper pulp to be refined, then the refining is carried out in a conventional manner in a conventional industrial refiner until the desired Shopper-Riegler refining index is obtained, usually of the order of 30 to 40.
- the pulp thus obtained is then used like conventionally refined pulp.
- the method according to the invention makes it possible to considerably reduce the refining time of paper pulps of various origins.
- the time saving for obtaining a Shopper-Riegler refining index of the order of 35 is 30 to 35% compared to the process carried out in the absence of colloidal silica sol.
- the method according to the invention makes it possible to reduce the duration of the refining by 10 minutes, that is to say a saving of time of approximately 33%.
- Table I the Shoepper-Riegler refining indices obtained as a function of time are mentioned.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Mechanical Engineering (AREA)
- Paper (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9101108A FR2672315B1 (fr) | 1991-01-31 | 1991-01-31 | Nouveau procede de raffinage de la pate a papier. |
FR9101108 | 1991-01-31 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0497671A1 true EP0497671A1 (de) | 1992-08-05 |
EP0497671B1 EP0497671B1 (de) | 1995-05-10 |
Family
ID=9409242
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP92400190A Expired - Lifetime EP0497671B1 (de) | 1991-01-31 | 1992-01-24 | Verfahren zur Raffinierung einer Fasersuspension |
Country Status (7)
Country | Link |
---|---|
US (1) | US5225041A (de) |
EP (1) | EP0497671B1 (de) |
CA (1) | CA2060395A1 (de) |
DE (1) | DE69202346T2 (de) |
FI (1) | FI98078C (de) |
FR (1) | FR2672315B1 (de) |
NO (1) | NO179459C (de) |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5571494A (en) * | 1995-01-20 | 1996-11-05 | J. M. Huber Corporation | Temperature-activated polysilicic acids |
US6159335A (en) * | 1997-02-21 | 2000-12-12 | Buckeye Technologies Inc. | Method for treating pulp to reduce disintegration energy |
US6074530A (en) * | 1998-01-21 | 2000-06-13 | Vinings Industries, Inc. | Method for enhancing the anti-skid or friction properties of a cellulosic fiber |
US7726592B2 (en) * | 2003-12-04 | 2010-06-01 | Hercules Incorporated | Process for increasing the refiner production rate and/or decreasing the specific energy of pulping wood |
EP4105380A1 (de) | 2009-03-30 | 2022-12-21 | FiberLean Technologies Limited | Verfahren zur herstellung von nanofibrilären cellulosesuspensionen |
EP2805986B1 (de) | 2009-03-30 | 2017-11-08 | FiberLean Technologies Limited | Verfahren zur herstellung von nano-fibrillären zellulosegels |
GB0908401D0 (en) | 2009-05-15 | 2009-06-24 | Imerys Minerals Ltd | Paper filler composition |
PL2386682T3 (pl) | 2010-04-27 | 2014-08-29 | Omya Int Ag | Sposób wytwarzania materiałów strukturalnych z użyciem nanowłóknistych żeli celulozowych |
EP2386683B1 (de) | 2010-04-27 | 2014-03-19 | Omya International AG | Verfahren zur Herstellung von Verbundstoffmaterialien auf Gelbasis |
GB201019288D0 (en) | 2010-11-15 | 2010-12-29 | Imerys Minerals Ltd | Compositions |
PL3362508T3 (pl) | 2015-10-14 | 2019-10-31 | Fiberlean Tech Ltd | 3D-formowalny materiał arkuszowy |
CN109072551B (zh) | 2016-04-05 | 2020-02-04 | 菲博林科技有限公司 | 纸和纸板产品 |
US11846072B2 (en) | 2016-04-05 | 2023-12-19 | Fiberlean Technologies Limited | Process of making paper and paperboard products |
DK3445900T3 (da) | 2016-04-22 | 2022-08-01 | Fiberlean Tech Ltd | FIBRE OMFATTENDE MIKROFIBRILLERET CELLULOSE og FREMGANGSMÅDER TIL FREMSTILLING AF FIBRE OG IKKE-VÆVEDE MATERIALER DERAF |
JP6855903B2 (ja) * | 2017-04-24 | 2021-04-07 | セイコーエプソン株式会社 | 処理装置およびシート製造装置 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3069309A (en) * | 1961-02-01 | 1962-12-18 | Du Pont | Pulp bleaching |
GB929731A (en) * | 1958-11-24 | 1963-06-26 | Bauer Bros Co | Pulp bleaching |
US4229250A (en) * | 1979-02-28 | 1980-10-21 | Valmet Oy | Method of improving properties of mechanical paper pulp without chemical reaction therewith |
EP0379964A1 (de) * | 1989-01-18 | 1990-08-01 | Nippon Paper Industries Co., Ltd. | Aufzeichnungsblatt für Tintenstrahlschreiber |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE436368B (sv) * | 1979-01-12 | 1984-12-03 | Sunds Defibrator | Sett att framstella blekta, mekaniska, kemimekaniska och halvkemiska massor av lignocellulosahaltiga fibermaterial |
SE8107078L (sv) * | 1981-11-27 | 1983-05-28 | Eka Ab | Forfarande for papperstillverkning |
WO1987001746A1 (en) * | 1985-09-20 | 1987-03-26 | Scott Paper Company | Method of pretreating pulp with stabilizers and peroxide prior to mechanical refining |
US4849053A (en) * | 1985-09-20 | 1989-07-18 | Scott Paper Company | Method for producing pulp using pre-treatment with stabilizers and defibration |
US4643801A (en) * | 1986-02-24 | 1987-02-17 | Nalco Chemical Company | Papermaking aid |
US4795531A (en) * | 1987-09-22 | 1989-01-03 | Nalco Chemical Company | Method for dewatering paper |
-
1991
- 1991-01-31 FR FR9101108A patent/FR2672315B1/fr not_active Expired - Fee Related
-
1992
- 1992-01-24 DE DE69202346T patent/DE69202346T2/de not_active Expired - Fee Related
- 1992-01-24 EP EP92400190A patent/EP0497671B1/de not_active Expired - Lifetime
- 1992-01-29 FI FI920395A patent/FI98078C/fi not_active IP Right Cessation
- 1992-01-30 NO NO920405A patent/NO179459C/no unknown
- 1992-01-30 CA CA002060395A patent/CA2060395A1/fr not_active Abandoned
- 1992-01-31 US US07/828,760 patent/US5225041A/en not_active Expired - Lifetime
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB929731A (en) * | 1958-11-24 | 1963-06-26 | Bauer Bros Co | Pulp bleaching |
US3069309A (en) * | 1961-02-01 | 1962-12-18 | Du Pont | Pulp bleaching |
US4229250A (en) * | 1979-02-28 | 1980-10-21 | Valmet Oy | Method of improving properties of mechanical paper pulp without chemical reaction therewith |
EP0379964A1 (de) * | 1989-01-18 | 1990-08-01 | Nippon Paper Industries Co., Ltd. | Aufzeichnungsblatt für Tintenstrahlschreiber |
Also Published As
Publication number | Publication date |
---|---|
FI98078B (fi) | 1996-12-31 |
FI920395A (fi) | 1992-08-01 |
FI920395A0 (fi) | 1992-01-29 |
DE69202346D1 (de) | 1995-06-14 |
NO179459C (no) | 1996-10-09 |
FR2672315A1 (fr) | 1992-08-07 |
CA2060395A1 (fr) | 1992-08-01 |
FI98078C (fi) | 1997-04-10 |
EP0497671B1 (de) | 1995-05-10 |
FR2672315B1 (fr) | 1996-06-07 |
DE69202346T2 (de) | 1995-09-28 |
US5225041A (en) | 1993-07-06 |
NO920405D0 (no) | 1992-01-30 |
NO920405L (no) | 1992-08-03 |
NO179459B (no) | 1996-07-01 |
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