FI961882A - Förfarande för separering av metalljoner från massan - Google Patents
Förfarande för separering av metalljoner från massan Download PDFInfo
- Publication number
- FI961882A FI961882A FI961882A FI961882A FI961882A FI 961882 A FI961882 A FI 961882A FI 961882 A FI961882 A FI 961882A FI 961882 A FI961882 A FI 961882A FI 961882 A FI961882 A FI 961882A
- Authority
- FI
- Finland
- Prior art keywords
- metal ions
- flow
- pulp
- pct
- washing
- Prior art date
Links
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
- D21C9/10—Bleaching ; Apparatus therefor
- D21C9/1026—Other features in bleaching processes
- D21C9/1042—Use of chelating agents
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
- D21C9/10—Bleaching ; Apparatus therefor
- D21C9/1005—Pretreatment of the pulp, e.g. degassing the pulp
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Paper (AREA)
- Extraction Or Liquid Replacement (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
- Disintegrating Or Milling (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE9303644A SE501985C2 (sv) | 1993-11-05 | 1993-11-05 | Förfarande för avskiljning av metalljoner från massa i samband med blekning av massan |
| PCT/SE1994/000930 WO1995012710A1 (en) | 1993-11-05 | 1994-10-06 | A method of separating metal ions from pulp |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FI961882A true FI961882A (sv) | 1996-05-03 |
| FI961882A0 FI961882A0 (sv) | 1996-05-03 |
Family
ID=20391642
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FI961882A FI961882A0 (sv) | 1993-11-05 | 1996-05-03 | Förfarande för separering av metalljoner från massan |
Country Status (13)
| Country | Link |
|---|---|
| US (1) | US5980689A (sv) |
| EP (1) | EP0726980B1 (sv) |
| JP (1) | JPH09504582A (sv) |
| AT (1) | ATE175737T1 (sv) |
| AU (1) | AU1036595A (sv) |
| BR (1) | BR9407975A (sv) |
| CA (1) | CA2173735A1 (sv) |
| DE (1) | DE69415997T2 (sv) |
| FI (1) | FI961882A0 (sv) |
| NO (1) | NO961815L (sv) |
| SE (1) | SE501985C2 (sv) |
| WO (1) | WO1995012710A1 (sv) |
| ZA (1) | ZA948015B (sv) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7297225B2 (en) * | 2004-06-22 | 2007-11-20 | Georgia-Pacific Consumer Products Lp | Process for high temperature peroxide bleaching of pulp with cool discharge |
| FI128968B (sv) * | 2020-03-31 | 2021-04-15 | Chempolis Oy | Peroxidblekning av cellulosamassa |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ATE97179T1 (de) * | 1989-06-06 | 1993-11-15 | Eka Nobel Ab | Verfahren zum bleichen von lignocellulose enthaltenden zellstoffen. |
| SE468355B (sv) * | 1991-04-30 | 1992-12-21 | Eka Nobel Ab | Blekning av kemisk massa genom behandling med komplexbildare och ozon |
| EP0564443A1 (en) * | 1992-03-15 | 1993-10-06 | Kamyr, Inc. | Treatment of bleach plant filtrates |
| CA2090396A1 (en) * | 1992-04-03 | 1993-10-04 | Josef Theurer | Tamping machine with a two-sleeper tamping unit |
| SE469387B (sv) * | 1992-05-11 | 1993-06-28 | Kamyr Ab | Saett vid blekning av massa utan anvaendning av klorkemikalier |
| SE500113C2 (sv) * | 1992-07-09 | 1994-04-18 | Kamyr Ab | Sätt vid blekning av massa för omhändertagande av utlösta metaller |
| SE9301160L (sv) * | 1992-08-28 | 1994-03-01 | Sunds Defibrator Ind Ab | Förfarande för behandling av processvatten |
-
1993
- 1993-11-05 SE SE9303644A patent/SE501985C2/sv not_active IP Right Cessation
-
1994
- 1994-10-06 US US08/624,608 patent/US5980689A/en not_active Expired - Fee Related
- 1994-10-06 AT AT95900957T patent/ATE175737T1/de not_active IP Right Cessation
- 1994-10-06 JP JP7513155A patent/JPH09504582A/ja active Pending
- 1994-10-06 WO PCT/SE1994/000930 patent/WO1995012710A1/en active IP Right Grant
- 1994-10-06 DE DE69415997T patent/DE69415997T2/de not_active Expired - Fee Related
- 1994-10-06 AU AU10365/95A patent/AU1036595A/en not_active Abandoned
- 1994-10-06 BR BR9407975A patent/BR9407975A/pt not_active Application Discontinuation
- 1994-10-06 EP EP95900957A patent/EP0726980B1/en not_active Expired - Lifetime
- 1994-10-06 CA CA002173735A patent/CA2173735A1/en not_active Abandoned
- 1994-10-13 ZA ZA948015A patent/ZA948015B/xx unknown
-
1996
- 1996-05-03 FI FI961882A patent/FI961882A0/sv unknown
- 1996-05-03 NO NO961815A patent/NO961815L/no unknown
Also Published As
| Publication number | Publication date |
|---|---|
| NO961815D0 (no) | 1996-05-03 |
| ATE175737T1 (de) | 1999-01-15 |
| WO1995012710A1 (en) | 1995-05-11 |
| JPH09504582A (ja) | 1997-05-06 |
| BR9407975A (pt) | 1996-12-03 |
| SE501985C2 (sv) | 1995-07-03 |
| AU1036595A (en) | 1995-05-23 |
| FI961882A0 (sv) | 1996-05-03 |
| EP0726980A1 (en) | 1996-08-21 |
| ZA948015B (en) | 1995-05-31 |
| US5980689A (en) | 1999-11-09 |
| CA2173735A1 (en) | 1995-05-11 |
| DE69415997D1 (de) | 1999-02-25 |
| DE69415997T2 (de) | 1999-05-27 |
| SE9303644L (sv) | 1995-05-06 |
| EP0726980B1 (en) | 1999-01-13 |
| NO961815L (no) | 1996-05-03 |
| SE9303644D0 (sv) | 1993-11-05 |
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