WO2002064259A1 - A pair of opposed co-operating refining elements - Google Patents
A pair of opposed co-operating refining elements Download PDFInfo
- Publication number
- WO2002064259A1 WO2002064259A1 PCT/SE2002/000147 SE0200147W WO02064259A1 WO 2002064259 A1 WO2002064259 A1 WO 2002064259A1 SE 0200147 W SE0200147 W SE 0200147W WO 02064259 A1 WO02064259 A1 WO 02064259A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- refining
- elements
- zone
- bars
- opposed
- Prior art date
Links
Classifications
-
- 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
- D21D1/30—Disc mills
- D21D1/306—Discs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C7/00—Crushing or disintegrating by disc mills
- B02C7/02—Crushing or disintegrating by disc mills with coaxial discs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C7/00—Crushing or disintegrating by disc mills
- B02C7/11—Details
- B02C7/12—Shape or construction of discs
Definitions
- This invention relates to the disintegration and refining of lignocellulosic material, such as mechanical pulp (TMP, CTMP), reject pulp, recycled fiber pulp and the like in a disc refiner with plane or angled discs.
- the invention more precisely, relates to refiner elements for use in a refiner of this kind.
- a disc refiner comprises two opposed counter-rotating refining discs, one or both of which are rotary in a surrounding refiner housing.
- a plurality of refining elements is arranged on the refining discs.
- a refining element can also be assembled of several partial elements. These refining elements are formed with a pattern of bars and intermediate grooves. The refining discs are placed in such a way that the refining elements form a refining gap, through which, the fiber material is intended to pass from the inside out, at which passage the disintegration is carried out by the bars of the elements.
- These bars can be of different design. They can be continuous or discontinuous, with uniform or varying height. In certain cases toothed bars can be used.
- the fiber material is defibered first, i.e. the fibers are separated. This takes place in the interior portion of the refining gap, where there is the greatest distance between the refining surfaces.
- the refining gap decreases thereafter outward, and at the same time the pattern of the bars becomes tighter in order to obtain the desired working of the fiber material. Large energy amounts are required to achieve this working.
- the material concentration can be 3-50%, which implies the generation of large amounts of steam from the water following along.
- Part of the generated steam flows rearward inward to the inlet for the material, and another part flows forward outward to the outlet from the refining gap.
- the steam pressure increases from the inlet to a pressure maximum in the outer portion of the refining gap, and thereafter decreases toward the outlet.
- This maximum pressure which can rise to 7-8 bar, implies that the steam generated in the refining gap outside the pressure maximum flows outward, while the steam inside the pressure maximum flows inward.
- the rearward flowing steam causes disturbance of the fiber flow in the refining gap. This is inconvenient, because a non-uniform fiber flow results in uneven pulp quality.
- the refining surfaces are given a different design. Other factors also influence the pulp quality, for example the size of the refining gap, the moisture content of the fiber material, the feed, the temperature, and other.
- the refining elements are formed so, that the main part of the steam generated in the refining gap is prevented from flowing rearward inward in the refining gap, but instead flows forward outward.
- the bars of the refining elements are formed in such a way, that the material in the refining gap forms a steam lock, which moves the pressure maximum inward in the refining gap. Due to the fact that the main part of the steam flows outward together with the material, the disturbances of the fiber flow are minimized, and the quality of the pulp will be higher and more uniform.
- Figs. 1 and 2 schematically show the refining surface on each of the two co-operating refining elements according to the invention
- Fig. 3 is a cross-section of the opposed elements.
- Each of the opposed co-operating refining elements 1, 2 consists of a single element, which extends radially along the entire refining gap, or of at least two partial elements, each of which extends radially, one after the other, along a portion of the refining gap.
- the first refining element 1 which is intended to be placed on a rotary refining disc, is formed with a first radially restricted zone 7 with elevated bars 8 located in the inner portion of the refining gap. Directly outside this first zone 7, a second radially restricted zone 9 without bars is located. Said zone 9, instead of having bars in a proper meaning, can be formed smooth or with an uneven surface intended to bring about a certain braking effect on the material in the refining gap.
- the second refining element 2 which is intended to be placed directly in front of the first refining element 1 on a stationary or rotary refining disc, is formed with a third radially restricted zone 10 without bars.
- Said third zone 10 is located directly in front of the first zone 7 and second zone 9.
- the third zone shall not have bars in a proper meaning, but can be smooth or be formed with unevennesses or the like intended to bring about a certain braking effect on the material in the refining gap.
- both refining elements 1, 2 are provided with bars 4 and grooves 6, which can have a conventional design.
- One refining element possibly can be formed with an elevated ridge 11, 12, which extends in circumferential direction after the second and, respectively, third zone 9 and 10, respectively.
- the elevated bars 8 in the first zone 7 on the first refining element 1 extend into the third zone 10 on the second refining element 2, so that the tops of the bars 8 are located close to the surface of the refining element 2 in the third zone 10.
- the elevated bars 8 suitably are angled in relation to the radius of the refining element 1 , so that they extend outward rearward, counted in the rotation direction of the refining element.
- the angle should be between 0 and 60°, suitably between 10 and 45°.
- the material is fed from the inside out through the refining gap formed between the two opposed refining elements 1, 2.
- a first working of the material takes place, which is defibered without any considerable generation of steam.
- the material arrives thereafter at the restricted zones 7, 9, 10 where the material by the elevated bars 8 on the first rotating refining element 1 will be caused to rotate while at the same time by the centrifugal force being fed outward.
- the elevated bars 8 are angled, the feeding effect is increased.
- a pressure maximum which can amount to about 8 bar.
- This pressure maximum can be moved to the radial position, which is defined by the material ring formed in the refining gap in the space defined by the second radially restricted zone 9 in the first refining element 1 together with the directly in front located portion of the third radially restricted zone 10 in the second refining element 2.
- the steam generated in the refining gap outside the material ring is then forced to flow outward together with the material, whereby the working and material flow become more uniform and, thus, the pulp quality is improved and made more uniform.
Landscapes
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Paper (AREA)
- Crushing And Grinding (AREA)
- Discharge Heating (AREA)
- Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
- Medicines Containing Material From Animals Or Micro-Organisms (AREA)
- Amplifiers (AREA)
- Compositions Of Oxide Ceramics (AREA)
- Muffle Furnaces And Rotary Kilns (AREA)
Abstract
Description
Claims
Priority Applications (9)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NZ527439A NZ527439A (en) | 2001-02-15 | 2002-01-29 | A pair of opposed co-operating refining elements |
JP2002564045A JP4080884B2 (en) | 2001-02-15 | 2002-01-29 | A pair of opposing refining elements working together |
BR0207696-9A BR0207696A (en) | 2001-02-15 | 2002-01-29 | Opposite Cooperating Refining Pair |
DE60231791T DE60231791D1 (en) | 2001-02-15 | 2002-01-29 | PAIR OF OPPOSITE, COOPERATIVE REFINEMENT ELEMENTS |
AU2002228533A AU2002228533B2 (en) | 2001-02-15 | 2002-01-29 | A pair of opposed co-operating refining elements |
CA002438653A CA2438653C (en) | 2001-02-15 | 2002-01-29 | A pair of opposed co-operating refining elements |
EP02710599A EP1361926B1 (en) | 2001-02-15 | 2002-01-29 | A pair of opposed co-operating refining elements |
US10/467,880 US7007879B2 (en) | 2001-02-15 | 2002-01-29 | Pair of opposed co-operating refining elements |
NO20033610A NO20033610L (en) | 2001-02-15 | 2003-08-14 | A pair of opposing refining elements |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE0100540-4 | 2001-02-15 | ||
SE0100540A SE518463C2 (en) | 2001-02-15 | 2001-02-15 | A pair of opposing interacting grinding elements intended for a disc refiner for atomizing and refining lignocellulosic material |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2002064259A1 true WO2002064259A1 (en) | 2002-08-22 |
Family
ID=20283030
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/SE2002/000147 WO2002064259A1 (en) | 2001-02-15 | 2002-01-29 | A pair of opposed co-operating refining elements |
Country Status (13)
Country | Link |
---|---|
US (1) | US7007879B2 (en) |
EP (1) | EP1361926B1 (en) |
JP (1) | JP4080884B2 (en) |
CN (1) | CN1268435C (en) |
AT (1) | ATE427162T1 (en) |
AU (1) | AU2002228533B2 (en) |
BR (1) | BR0207696A (en) |
CA (1) | CA2438653C (en) |
DE (1) | DE60231791D1 (en) |
NO (1) | NO20033610L (en) |
NZ (1) | NZ527439A (en) |
SE (1) | SE518463C2 (en) |
WO (1) | WO2002064259A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2012126142A1 (en) * | 2011-03-23 | 2012-09-27 | 永丰余造纸股份有限公司 | Rubbing machine and its tool pan |
Families Citing this family (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FI118971B (en) * | 2002-07-02 | 2008-05-30 | Metso Paper Inc | Refiner |
CA2507321C (en) * | 2004-07-08 | 2012-06-26 | Andritz Inc. | High intensity refiner plate with inner fiberizing zone |
US7300540B2 (en) * | 2004-07-08 | 2007-11-27 | Andritz Inc. | Energy efficient TMP refining of destructured chips |
SE529525C2 (en) * | 2006-01-16 | 2007-09-04 | Metso Paper Inc | Method and apparatus for checking alignment between paint surfaces |
FI122364B (en) * | 2006-01-30 | 2011-12-30 | Metso Paper Inc | Refiner |
US7954745B2 (en) * | 2006-08-15 | 2011-06-07 | Andritz Inc. | Refiner plate segment with triangular inlet feature |
CN102251420A (en) * | 2010-05-20 | 2011-11-23 | 纪慧军 | Universal gate transition region millstone |
FI122889B (en) * | 2010-12-31 | 2012-08-31 | Upm Kymmene Corp | Method and apparatus for preparing nanocellulose |
FI127628B (en) * | 2014-06-26 | 2018-10-31 | Valmet Technologies Inc | Single-disc refiner |
CN104492541A (en) * | 2014-12-24 | 2015-04-08 | 泰州奥莱佳生活用品有限公司 | Five-stage grinding system with fiber cutting function |
CN104549644A (en) * | 2014-12-29 | 2015-04-29 | 新乡市路康机械有限公司 | Special colloid cutting mill |
SE541111C2 (en) * | 2017-06-19 | 2019-04-09 | Valmet Oy | Steam evacuation in a pulp or fiber refiner |
US11001968B2 (en) | 2018-01-02 | 2021-05-11 | International Paper Company | Apparatus and method for processing wood fibers |
US11421382B2 (en) | 2018-01-02 | 2022-08-23 | International Paper Company | Apparatus and method for processing wood fibers |
US10794003B2 (en) | 2018-01-02 | 2020-10-06 | International Paper Company | Apparatus and method for processing wood fibers |
BR112021024710A2 (en) * | 2019-06-28 | 2022-02-08 | Int Paper Co | Apparatus and method for processing wood fibers |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE505395C2 (en) * | 1995-11-13 | 1997-08-18 | Sunds Defibrator Ind Ab | A pair of interacting grinding elements intended for a disc refiner |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5425508A (en) * | 1994-02-17 | 1995-06-20 | Beloit Technologies, Inc. | High flow, low intensity plate for disc refiner |
US5934585A (en) * | 1997-05-05 | 1999-08-10 | J & L Fiber Services Inc | Refiner plate assembly and method of mounting |
US6607153B1 (en) * | 1998-08-19 | 2003-08-19 | Durametal Corporation | Refiner plate steam management system |
US6311907B1 (en) * | 1998-08-19 | 2001-11-06 | Durametal Corporation | Refiner plate with chicanes |
US6325308B1 (en) * | 1999-09-28 | 2001-12-04 | J & L Fiber Services, Inc. | Refiner disc and method |
US6422496B1 (en) * | 2000-06-14 | 2002-07-23 | Voith Sulzer Paper Technology North America, Inc. | Refiner for refining a fiber suspension |
US20020070303A1 (en) * | 2000-12-12 | 2002-06-13 | J & L Fiber Services, Inc. | Adjustable refiner plate |
-
2001
- 2001-02-15 SE SE0100540A patent/SE518463C2/en not_active IP Right Cessation
-
2002
- 2002-01-29 CN CNB028048172A patent/CN1268435C/en not_active Expired - Lifetime
- 2002-01-29 AT AT02710599T patent/ATE427162T1/en active
- 2002-01-29 BR BR0207696-9A patent/BR0207696A/en active Search and Examination
- 2002-01-29 DE DE60231791T patent/DE60231791D1/en not_active Expired - Lifetime
- 2002-01-29 AU AU2002228533A patent/AU2002228533B2/en not_active Ceased
- 2002-01-29 CA CA002438653A patent/CA2438653C/en not_active Expired - Fee Related
- 2002-01-29 US US10/467,880 patent/US7007879B2/en not_active Expired - Lifetime
- 2002-01-29 WO PCT/SE2002/000147 patent/WO2002064259A1/en active IP Right Grant
- 2002-01-29 JP JP2002564045A patent/JP4080884B2/en not_active Expired - Fee Related
- 2002-01-29 EP EP02710599A patent/EP1361926B1/en not_active Expired - Lifetime
- 2002-01-29 NZ NZ527439A patent/NZ527439A/en unknown
-
2003
- 2003-08-14 NO NO20033610A patent/NO20033610L/en not_active Application Discontinuation
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE505395C2 (en) * | 1995-11-13 | 1997-08-18 | Sunds Defibrator Ind Ab | A pair of interacting grinding elements intended for a disc refiner |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2012126142A1 (en) * | 2011-03-23 | 2012-09-27 | 永丰余造纸股份有限公司 | Rubbing machine and its tool pan |
TWI446968B (en) * | 2011-03-23 | 2014-08-01 | Yfy Biopulp Technology Ltd | Abrasive apparatus and blade plate thereof |
US9205428B2 (en) | 2011-03-23 | 2015-12-08 | Yfy Biopulp Technology Limited | Rubbing machine and its tool pan |
Also Published As
Publication number | Publication date |
---|---|
NO20033610L (en) | 2003-09-26 |
BR0207696A (en) | 2004-04-06 |
SE0100540D0 (en) | 2001-02-15 |
US20040118959A1 (en) | 2004-06-24 |
SE0100540L (en) | 2002-08-16 |
EP1361926A1 (en) | 2003-11-19 |
DE60231791D1 (en) | 2009-05-14 |
ATE427162T1 (en) | 2009-04-15 |
JP2004520160A (en) | 2004-07-08 |
SE518463C2 (en) | 2002-10-15 |
EP1361926B1 (en) | 2009-04-01 |
NZ527439A (en) | 2004-12-24 |
JP4080884B2 (en) | 2008-04-23 |
CN1268435C (en) | 2006-08-09 |
CA2438653C (en) | 2008-12-09 |
NO20033610D0 (en) | 2003-08-14 |
CN1491133A (en) | 2004-04-21 |
US7007879B2 (en) | 2006-03-07 |
CA2438653A1 (en) | 2002-08-22 |
AU2002228533B2 (en) | 2004-06-03 |
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