ES8203123A1 - Dispositivo de flotacion para destintar suspensiones de ma- terial fibroso - Google Patents
Dispositivo de flotacion para destintar suspensiones de ma- terial fibrosoInfo
- Publication number
- ES8203123A1 ES8203123A1 ES501166A ES501166A ES8203123A1 ES 8203123 A1 ES8203123 A1 ES 8203123A1 ES 501166 A ES501166 A ES 501166A ES 501166 A ES501166 A ES 501166A ES 8203123 A1 ES8203123 A1 ES 8203123A1
- Authority
- ES
- Spain
- Prior art keywords
- deinking
- pulp suspension
- flotation apparatus
- cross
- sectional area
- 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.)
- Expired
Links
- 239000000725 suspension Substances 0.000 title abstract 6
- 238000005188 flotation Methods 0.000 title abstract 3
- 239000002761 deinking Substances 0.000 title 1
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
- D21B1/30—Defibrating by other means
- D21B1/32—Defibrating by other means of waste paper
- D21B1/325—Defibrating by other means of waste paper de-inking devices
- D21B1/327—Defibrating by other means of waste paper de-inking devices using flotation devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/20—Mixing gases with liquids
- B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
- B01F23/232—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using flow-mixing means for introducing the gases, e.g. baffles
- B01F23/2323—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using flow-mixing means for introducing the gases, e.g. baffles by circulating the flow in guiding constructions or conduits
- B01F23/23231—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using flow-mixing means for introducing the gases, e.g. baffles by circulating the flow in guiding constructions or conduits being at least partially immersed in the liquid, e.g. in a closed circuit
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
- B01F25/20—Jet mixers, i.e. mixers using high-speed fluid streams
- B01F25/21—Jet mixers, i.e. mixers using high-speed fluid streams with submerged injectors, e.g. nozzles, for injecting high-pressure jets into a large volume or into mixing chambers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
- B01F25/30—Injector mixers
- B01F25/31—Injector mixers in conduits or tubes through which the main component flows
- B01F25/312—Injector mixers in conduits or tubes through which the main component flows with Venturi elements; Details thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
- B01F25/30—Injector mixers
- B01F25/31—Injector mixers in conduits or tubes through which the main component flows
- B01F25/312—Injector mixers in conduits or tubes through which the main component flows with Venturi elements; Details thereof
- B01F25/3124—Injector mixers in conduits or tubes through which the main component flows with Venturi elements; Details thereof characterised by the place of introduction of the main flow
- B01F25/31242—Injector mixers in conduits or tubes through which the main component flows with Venturi elements; Details thereof characterised by the place of introduction of the main flow the main flow being injected in the central area of the venturi, creating an aspiration in the circumferential part of the conduit
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/10—Maintenance of mixers
- B01F35/145—Washing or cleaning mixers not provided for in other groups in this subclass; Inhibiting build-up of material on machine parts using other means
- B01F35/1452—Washing or cleaning mixers not provided for in other groups in this subclass; Inhibiting build-up of material on machine parts using other means using fluids
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/14—Flotation machines
- B03D1/1443—Feed or discharge mechanisms for flotation tanks
- B03D1/1456—Feed mechanisms for the slurry
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/14—Flotation machines
- B03D1/1443—Feed or discharge mechanisms for flotation tanks
- B03D1/1462—Discharge mechanisms for the froth
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/14—Flotation machines
- B03D1/24—Pneumatic
- B03D1/247—Mixing gas and slurry in a device separate from the flotation tank, i.e. reactor-separator type
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F1/00—Wet end of machines for making continuous webs of paper
- D21F1/66—Pulp catching, de-watering, or recovering; Re-use of pulp-water
- D21F1/70—Pulp catching, de-watering, or recovering; Re-use of pulp-water by flotation
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/64—Paper recycling
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S261/00—Gas and liquid contact apparatus
- Y10S261/75—Flowing liquid aspirates gas
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biotechnology (AREA)
- Wood Science & Technology (AREA)
- Mechanical Engineering (AREA)
- Paper (AREA)
Abstract
DISPOSITIVO DE FLOTACION PARA DESTINTAR SUSPENSIONES DE MATERIALES FIBROSO. CONSTA DE UNA CELDA DE FLOTACION (1), GENERALMENTE DE FORMA ANULAR, A LA QUE LLEGA LA SUSPENSION DE MATERIAL FIBROSO A DESTINAR A TRAVES DE UN SISTEMA ADECUADO DE TUBERIAS (9), BOMBAS DE IMPULSION (8) Y DE UNOS INYECTORES (2) EQUIPADOS CON TOBERAS (3) DE RENDIJA ANCHA, LOS CUALES ESTAN CONECTADOS A UNAS TUBERIAS DE VENTILACION (10) QUE SOBRESALEN DEL NIVEL SUPERIOR DEL LIQUIDO DE LA CELDA DE FLOTACION (1). LOS INYECTORES (2) ESTAN PROVISTOS DE ABERTURAS ADECUADAS PARA PODER LIMPIAR LAS TOBERAS (3) Y LAS TUBERIAS DE VENTILACION (10).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3013655A DE3013655C2 (de) | 1980-04-09 | 1980-04-09 | Injektor zum Belüften von Fasern enthaltenden Suspensionen |
| DE3015788A DE3015788C2 (de) | 1980-04-24 | 1980-04-24 | Flotationsvorrichtung zum Deinken von Faserstoffsuspensionen |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| ES8203123A1 true ES8203123A1 (es) | 1982-02-16 |
| ES501166A0 ES501166A0 (es) | 1982-02-16 |
Family
ID=25784859
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES501166A Granted ES501166A0 (es) | 1980-04-09 | 1981-04-08 | Dispositivo de flotacion para destintar suspensiones de ma- terial fibroso |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US4347128A (es) |
| EP (1) | EP0037513B1 (es) |
| JP (1) | JPS56148986A (es) |
| ES (1) | ES501166A0 (es) |
| FI (1) | FI67731C (es) |
Families Citing this family (41)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4512888A (en) * | 1982-07-01 | 1985-04-23 | Bird Machine Company, Inc. | Apparatus for removal by flotation of solid particles from liquid |
| DE3245847C1 (de) * | 1982-12-10 | 1984-11-08 | E. & M. Lamort S.A., Vitry-le-François, Marne | Vorrichtung zum Flottieren von Suspensionen |
| CH658481A5 (de) * | 1983-02-18 | 1986-11-14 | Escher Wyss Gmbh | Flotationsvorrichtung zum flotieren von aus altpapier gewonnener faserstoffsuspension. |
| DE3325969A1 (de) * | 1983-07-19 | 1985-01-31 | Klöckner-Humboldt-Deutz AG, 5000 Köln | Vorrichtung zur begasung von fluessigkeiten, insbesondere einer mit flotationsreagenzien versetzten fluessigkeits-feststoff-suspension |
| SE442173B (sv) * | 1983-10-27 | 1985-12-09 | Sunds Defibrator | Anordning vid flotation av fibersuspensioner |
| AT387407B (de) * | 1984-01-09 | 1989-01-25 | Escher Wyss Gmbh | Flotationsvorrichtung zum flotieren von aus altpapier gewonnener faserstoffsuspension |
| DE3406990A1 (de) * | 1984-02-27 | 1985-08-29 | E. & M. Lamort S.A., Vitry-le-François, Marne | Verfahren und vorrichtung zum flotieren von dispersionen |
| DE3567040D1 (en) * | 1984-04-03 | 1989-02-02 | Feldmuehle Ag | Aeration installation |
| FR2574002B1 (fr) * | 1984-11-30 | 1987-02-27 | Inst Nat Rech Chimique | Perfectionnement apporte a la separation et a la recuperation de solides a partir de liquides les contenant et faisant appel au procede de flottation ionique, et moyen pour la mise en oeuvre de ce perfectionnement |
| CH665962A5 (de) * | 1985-07-19 | 1988-06-30 | Escher Wyss Gmbh | Begasungsvorrichtung fuer eine flotationseinrichtung und deren verwendung. |
| BR8503919A (pt) * | 1985-08-16 | 1987-03-24 | Liquid Carbonic Ind Sa | Ejetor para o processo co2 na neutralizacao de aguas alcalinas |
| DE3614933C1 (de) * | 1986-05-02 | 1987-10-22 | Voith Gmbh J M | Flotationsbehaelter oder -zelle |
| ZA919256B (en) * | 1990-11-23 | 1992-11-25 | Atomaer Pty Ltd | Gas particle formation |
| US5341938A (en) * | 1991-03-20 | 1994-08-30 | Servicios Corporativos Frisco, S.A. De C.V. | Method of separating materials in a flotation reactor |
| DE4116916C2 (de) * | 1991-05-24 | 1994-09-22 | Escher Wyss Gmbh | Flotationseinrichtung zur Störstoff- insbesondere Druckfarbenentfernung aus Altpapiersuspensionen |
| US5351886A (en) * | 1993-02-11 | 1994-10-04 | Bull Dan F | Self-cleaning shower nozzle system |
| IT1264669B1 (it) * | 1993-07-05 | 1996-10-04 | Comer Spa | Reattore per la rimozione di impurita' da un liquido |
| AUPM383694A0 (en) * | 1994-02-14 | 1994-03-10 | Commonwealth Scientific And Industrial Research Organisation | Selective separation of particulate material |
| FR2717192B1 (fr) * | 1994-03-11 | 1996-04-26 | Lamort E & M | Procédé de désencrage de pâte à papier et appareil pour la mise en Óoeuvre de ce procédé. |
| AU680044B2 (en) * | 1994-10-17 | 1997-07-17 | Comer S.P.A. | Reactor for removing impurities from a liquid |
| FR2727441B1 (fr) * | 1994-11-28 | 1997-01-31 | Lamort E & M | Perfectionnements aux dispositifs d'injection d'air dans un flux de pate a papier pour en operer le desencrage |
| US5529190A (en) * | 1995-02-06 | 1996-06-25 | Ahlstrom Machinery, Inc. | Gas sparged hydrocyclone with foam separating vessel |
| FR2730941B1 (fr) * | 1995-02-23 | 1997-05-16 | Gonzalez Pierre | Cellule pour le traitement par flottation d'un milieu liquide |
| FR2772399B1 (fr) | 1997-12-15 | 2000-02-11 | Lamort E & M | Procede de desencrage de la pate a papier provenant de papiers recycles |
| IT1306856B1 (it) * | 1999-06-07 | 2001-10-11 | Ct Sviluppo Materiali Spa | Dispositivo per solubilizzare un aeriforme in fluido, ed uso di dettodispositivo. |
| AT408957B (de) * | 2000-02-03 | 2002-04-25 | Andritz Ag Maschf | Verfahren und vorrichtung zum belüften von dispersionen |
| US7018508B2 (en) * | 2001-10-30 | 2006-03-28 | Weyerhaeuser Company | Process for producing dried singulated crosslinked cellulose pulp fibers |
| US6748671B1 (en) * | 2001-10-30 | 2004-06-15 | Weyerhaeuser Company | Process to produce dried singulated cellulose pulp fibers |
| US6862819B2 (en) | 2001-10-30 | 2005-03-08 | Weyerhaeuser Company | System for producing dried singulated cellulose pulp fibers using a jet drier and injected steam |
| US7334347B2 (en) * | 2001-10-30 | 2008-02-26 | Weyerhaeuser Company | Process for producing dried, singulated fibers using steam and heated air |
| US6782637B2 (en) | 2001-10-30 | 2004-08-31 | Weyerhaeuser Company | System for making dried singulated crosslinked cellulose pulp fibers |
| US6769199B2 (en) | 2001-10-30 | 2004-08-03 | Weyerhaeuser Company | Process for producing dried singulated cellulose pulp fibers using a jet drier and injected steam and the product resulting therefrom |
| DE102004032601A1 (de) * | 2004-07-06 | 2006-02-16 | Voith Paper Patent Gmbh | Verfahren zur Flotation von Störstoffen aus einer wässrigen Faserstoffsuspension |
| WO2009138110A1 (de) * | 2008-05-15 | 2009-11-19 | Horst Grochowski | Verfahren und vorrichtung zum mischen von fluiden an einer breitschlitzdüse |
| JP5488122B2 (ja) * | 2009-09-18 | 2014-05-14 | 栗田工業株式会社 | 流体混合装置及び方法 |
| DE202010009140U1 (de) * | 2010-06-16 | 2010-10-21 | Juan Valdivia Gmbh | Anordnung zur Erzeugung von Luftblasen in Flüssigkeiten |
| CN103120986B (zh) * | 2013-02-04 | 2014-03-05 | 中国矿业大学 | 浮选池 |
| DE102013220363A1 (de) * | 2013-10-09 | 2015-04-09 | Siemens Aktiengesellschaft | Flotationsvorrichtung sowie Verfahren zum Betreiben einer Flotationsvorrichtung |
| WO2020095247A1 (en) * | 2018-11-07 | 2020-05-14 | Flsmidth A/S | Feeding and sparging arrangement for column flotation apparatus |
| CN110328203B (zh) * | 2019-07-09 | 2021-11-12 | 珠海格力智能装备有限公司 | 冲洗效果好的吸料罐冲洗方法及尿素机 |
| FI131882B1 (fi) * | 2023-07-13 | 2026-01-27 | Metso Finland Oy | Flotaatioyksikkö, flotaatiokoneisto ja menetelmä |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1429415A (en) * | 1921-01-18 | 1922-09-19 | George C Evans | Burner |
| US2140903A (en) * | 1936-06-20 | 1938-12-20 | Merton L Fisk | Spraying nozzle |
| US2424654A (en) * | 1944-06-03 | 1947-07-29 | Lindberg Eng Co | Fluid mixing device |
| US2562096A (en) * | 1947-06-23 | 1951-07-24 | Louis T Herrmann | Nozzle |
| US2883169A (en) * | 1955-04-29 | 1959-04-21 | Mining Process & Patent Co | Aerating apparatus for flotation pulps |
| US3309785A (en) * | 1964-10-23 | 1967-03-21 | Northern Natural Gas Co | Apparatus for forming a gas-solids suspension |
| DE1275513B (de) * | 1966-02-09 | 1968-08-22 | Ultrasonics Ltd | Vorrichtung zum Dispergieren von mit Feststoffen versetzten, insbesondere faserhaltigen Fluessigkeiten |
| US3371618A (en) * | 1966-02-18 | 1968-03-05 | Chambers John | Pump |
| SE345823B (es) * | 1970-04-27 | 1972-06-12 | Svenska Plastic Protection | |
| DE2836496C2 (de) * | 1978-08-21 | 1982-05-13 | E. & M. Lamort S.A., 51300 Vitry-le-François, Marne | Verfahren und Vorrichtung zum Deinken von Faserstoffsuspensionen |
| DE2914392C2 (de) * | 1979-04-10 | 1980-10-23 | E. Et M. Lamort S.A., Vitry-Le-Francois | Verfahren und Vorrichtung zum Deinken von Faserstoffsuspensionen |
-
1981
- 1981-03-24 EP EP19810102199 patent/EP0037513B1/de not_active Expired
- 1981-04-06 FI FI811060A patent/FI67731C/fi not_active IP Right Cessation
- 1981-04-08 US US06/252,067 patent/US4347128A/en not_active Expired - Fee Related
- 1981-04-08 ES ES501166A patent/ES501166A0/es active Granted
- 1981-04-09 JP JP5249681A patent/JPS56148986A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPH026877B2 (es) | 1990-02-14 |
| EP0037513B1 (de) | 1984-08-08 |
| US4347128A (en) | 1982-08-31 |
| JPS56148986A (en) | 1981-11-18 |
| FI67731B (fi) | 1985-01-31 |
| FI811060L (fi) | 1981-10-10 |
| FI67731C (fi) | 1985-05-10 |
| EP0037513A1 (de) | 1981-10-14 |
| ES501166A0 (es) | 1982-02-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| ES8203123A1 (es) | Dispositivo de flotacion para destintar suspensiones de ma- terial fibroso | |
| ES8707303A1 (es) | Un aparato para la separacion de minerales mediante flotacion de espuma desde una pulpa acuosa | |
| FI853468A0 (fi) | Foerfarande och anordning foer avsvaertning av returpapper. | |
| US4548673A (en) | Method and apparatus for deinking | |
| YU187388A (en) | Flotation device | |
| IT1196018B (it) | Dispositivo di flottazione per il trattamento di una sospensione di materia fibrosa ricavata dalla cartaccia | |
| FI854072A0 (fi) | Foerfarande och anordning foer flotation av dispersioner. | |
| FR2420597B1 (fr) | Appareil a desencrer la pate a papier a base de vieux papiers | |
| AU2598992A (en) | Improved apparatus and method for deinking waste paper pulp | |
| ES2065217A2 (es) | Maquina de flotacion para flotar minerales. | |
| EP0106054A3 (en) | Anaerobic digester | |
| DE69517226D1 (de) | Verfahren zum de-inken von Papierzellstoff und Vorrichtung zur Durchführung des Verfahrens | |
| ES8600968A1 (es) | Perfeccionamientos en los dispositivos de flotacion para la flotacion de suspension de material fibroso obtenido de papel viejo | |
| ES8608608A1 (es) | Procedimiento para tratar papelote | |
| DE68905524D1 (de) | Erhoehung der qualitaet bei kontinuierlichem zellstoffkochen. | |
| ES8607759A1 (es) | Procedimiento y aparato para mantener un determinado nivel de liquido turbio en una celda de flotacion | |
| GB8330309D0 (en) | Floatation of fibrous suspensions | |
| JPS57136987A (en) | Floating separator | |
| SU1175563A1 (ru) | Аэратор дл пневмогидравлической флотационной машины | |
| EP0398846A3 (en) | Deinking apparatus in the constant density section of paper manufacturing plants | |
| GB677634A (en) | Improvements in or relating to apparatus for pulping vegetable fibrous material | |
| CA2032256A1 (en) | Biological Method of Deinking Printed Wastepaper | |
| GB1440382A (en) | Production of paper pulp from refuse | |
| SU1162102A1 (ru) | Способ обогащения несульфидных руд | |
| ES8305445A1 (es) | Procedimientos en cribas a presion para material de pasta pa pelera. |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FD1A | Patent lapsed |
Effective date: 19970519 |