EP0581196A2 - Réglage d'une installation de flottaison à étage primaire et secondaire - Google Patents

Réglage d'une installation de flottaison à étage primaire et secondaire Download PDF

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Publication number
EP0581196A2
EP0581196A2 EP93111761A EP93111761A EP0581196A2 EP 0581196 A2 EP0581196 A2 EP 0581196A2 EP 93111761 A EP93111761 A EP 93111761A EP 93111761 A EP93111761 A EP 93111761A EP 0581196 A2 EP0581196 A2 EP 0581196A2
Authority
EP
European Patent Office
Prior art keywords
der
stage
primary stage
primary
overflow
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
Application number
EP93111761A
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German (de)
English (en)
Other versions
EP0581196A3 (fr
EP0581196B1 (fr
Inventor
Peter Schweiss
Hans-Dieter Dörflinger
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JM Voith GmbH
Original Assignee
JM Voith GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by JM Voith GmbH filed Critical JM Voith GmbH
Publication of EP0581196A2 publication Critical patent/EP0581196A2/fr
Publication of EP0581196A3 publication Critical patent/EP0581196A3/xx
Application granted granted Critical
Publication of EP0581196B1 publication Critical patent/EP0581196B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • B03D1/02—Froth-flotation processes
    • B03D1/028—Control and monitoring of flotation processes; computer models therefor
    • 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
    • B03D1/1406—Flotation machines with special arrangement of a plurality of flotation cells, e.g. positioning a flotation cell inside another
    • 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

Definitions

  • the invention relates to the control of a flotation plant according to the preamble of the claim.
  • there is a difficulty in controlling the two flotation stages because of the amount of foam generated and the air-containing suspension to be floated.
  • the following principle of regulation results: regulation of the primary cell overflow quantity by measuring the primary foam channel level and an indirect level regulation of the primary foam channel by changing the amount of accepting material (primary cell level) with a fixed inflow quantity for flotation (flow regulation).
  • the constant accumulation height also means a constant overflow amount due to the measuring weir in or at the end of the foam channel.
  • the measurement of the primary cell level only serves as an additional control display.
  • the advantages are:
  • the foam channel level (small volume) is sensitive to changes in the primary overflow quantity, which is why the primary overflow quantity can be set very precisely and reproducibly using the bypass valve.
  • the secondary stage is always charged with a constant amount due to the constant level of the foam channel, which means that the secondary overflow and the amount of return material are largely constant.
  • the inflow amount to the secondary stage is constant, but the air content in the secondary stage can change, whereby the overflow amount can vary despite the unchanged level transmitter display.
  • the secondary cell overflow quantity is controlled by measuring the secondary foam channel level in front of an outlet weir (vertical slot approx. 15 mm wide) and an indirect level control of the secondary foam channel by changing the amount of return material.
  • the foam channel level (small volume) is so sensitive to changes in the overflow volume that the influence of different air contents in the overflow material is negligible and there is a reproducible relationship between the foam channel level and the overflow volume.
  • primary stage 1 essentially consists of the individual flotation cells 20, 20 ', etc., which are connected in series and each of which is assigned an injector 22, 22' or another supply apparatus for the suspension to be flotated.
  • the supply lines to the injectors are labeled 21, 21 'etc.
  • a foam channel 12 is common to all flotation cells, and the cleaned suspension flows to the flotation cell via a weir.
  • the primary flotation stage has a measuring weir 28 in the foam channel or at the end of the foam channel.
  • the secondary stage 2 is constructed similarly with individual cells 61, 61 ', injectors 62 and 62', the conduction between the two cells being carried out by line 63.
  • a foam channel 61 is provided, which is also preceded by a weir.
  • a measuring weir 29 at the end or inside the foam channel.
  • the levels are preferably measured by pressure transmitters 51 and 53, respectively.
  • controllers 52 and 54 control the quantity of accepted material in the primary stage via valve 47 and the return flow to the primary stage from the secondary stage of flotation via valve 49.
  • the amount of foam or overflow of the primary stage is fed via line 36 to a hydrocyclone 10, which carries out the deaeration of the foam-containing suspension. With its conical end, it dips into a container 38 located deep, for example in the basement, from which a pump 44 conveys the suspension to line 46. To keep the level in the container 38 constant, a pressure transducer 45 and a regulator 56 and valve 45 in line 42 are used, via which a circulation quantity (in the bypass) is led to the secondary flotation stage 2.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biotechnology (AREA)
  • Paper (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Analysing Materials By The Use Of Radiation (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Physical Water Treatments (AREA)
EP93111761A 1992-07-30 1993-07-22 Réglage d'une installation de flottaison à étage primaire et secondaire Expired - Lifetime EP0581196B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4225117 1992-07-30
DE4225117A DE4225117C1 (de) 1992-07-30 1992-07-30 Flotationsanlage mit Primär- und Sekundärstufe

Publications (3)

Publication Number Publication Date
EP0581196A2 true EP0581196A2 (fr) 1994-02-02
EP0581196A3 EP0581196A3 (fr) 1994-04-13
EP0581196B1 EP0581196B1 (fr) 1996-12-04

Family

ID=6464410

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93111761A Expired - Lifetime EP0581196B1 (fr) 1992-07-30 1993-07-22 Réglage d'une installation de flottaison à étage primaire et secondaire

Country Status (9)

Country Link
US (1) US5330655A (fr)
EP (1) EP0581196B1 (fr)
JP (1) JPH06154655A (fr)
AT (1) ATE145840T1 (fr)
BR (1) BR9302561A (fr)
CA (1) CA2101710A1 (fr)
DE (1) DE4225117C1 (fr)
FI (1) FI933396A7 (fr)
NO (1) NO300005B1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0693318A1 (fr) * 1994-07-22 1996-01-24 Voith Sulzer Stoffaufbereitung GmbH Dispositif de flottaison
WO2003026801A1 (fr) * 2001-09-27 2003-04-03 Outokumpu Oyj Procede de reglage de variation d'alimentation dans un circuit de flottation de mineraux precieux
EP1457597A3 (fr) * 2003-03-11 2007-10-17 Andritz AG Méthode pour regler le fonctionnement d'une cellule de flottation

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6073774A (en) * 1997-04-14 2000-06-13 Beloit Technologies, Inc. Pressurized deinking module with vent line
US5804061A (en) * 1997-04-14 1998-09-08 Beloit Technologies, Inc. Multiflow pressurized deinking apparatus
NO993560D0 (no) * 1999-07-20 1999-07-20 Abb Miljoeas Fremgangsmåte for fjerning av gass og forurensninger fra en vaeske
AU1590901A (en) * 1999-11-12 2001-06-06 Baker Hughes Incorporated Froth flow measurement system
AT407844B (de) * 2000-02-03 2001-06-25 Andritz Ag Maschf Verfahren und vorrichtung zur belüftung von dispersionen
DE10125978C1 (de) * 2001-05-29 2003-01-02 Voith Paper Patent Gmbh Verfahren zur Steuerung oder Regelung einer Flotationsanlage
DE10125977C1 (de) * 2001-05-29 2003-01-02 Voith Paper Patent Gmbh Verfahren zur Entfernung von Störstoffen aus einer wässrigen Papierfasersuspension
DE10236123B4 (de) * 2002-08-07 2006-12-07 Voith Patent Gmbh Verfahren zur Entfernung von Störstoffen aus einer wässrigen Papierfasersuspension
AT412288B (de) * 2003-02-25 2004-12-27 Andritz Ag Maschf Verfahren und vorrichtung zur belüftung von suspensionen
FR2857032A1 (fr) * 2003-05-15 2005-01-07 Kadant Lamort Procede de desencrage de pate a papier et cellule de flottation utilisee pour ce procede
DE102008031411B4 (de) * 2008-07-02 2019-07-25 Voith Patent Gmbh Verfahren zur Steuerung oder Regelung einer Flotationsanlage
CN102225370B (zh) * 2011-05-24 2013-01-23 东北大学 一种含石棉型滑石矿的浮选除杂方法
CN102744159B (zh) * 2012-06-14 2016-01-20 甘肃酒钢集团宏兴钢铁股份有限公司 一种提高硫化铜矿石选矿指标的浮选方法
CN104668108A (zh) * 2014-12-29 2015-06-03 山东东山王楼煤矿有限公司 用于煤泥的浮选装置和浮选方法
CN105583069B (zh) * 2015-12-21 2018-02-23 中南大学 一种高磷鲕状赤铁矿的选别方法
CN105903574A (zh) * 2016-04-13 2016-08-31 中国矿业大学 一种浮选药剂乳化控制添加设备
CN105689156A (zh) * 2016-04-20 2016-06-22 江西铜业股份有限公司 一种浮选槽面控制调整方法
CN112004607B (zh) * 2017-12-09 2023-10-10 欧佩克修复技术有限公司 用于从水中分离物质的方法和设备

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1457077A (en) * 1919-08-21 1923-05-29 Thomas A Janney Flotation machine
US1886979A (en) * 1931-01-26 1932-11-08 Jr Joseph P Ruth Flotation method
US2005742A (en) * 1934-05-25 1935-06-25 Pierre R Hines Process for deinking imprinted paper
CA1015869A (en) * 1974-04-30 1977-08-16 Inco Limited Computer control of flotation metallurgy
SU598643A1 (ru) * 1975-08-21 1978-03-25 Всесоюзный научно-исследовательский и конструкторский институт "Цветметавтоматика" Способ управлени флотационным процессом с перечистными операци ми
SU738670A1 (ru) * 1978-03-27 1980-06-05 Всесоюзный Ордена Трудового Красного Знамени Научно-Исследовательский И Проектный Институт Механической Обработки Полезных Ископаемых Способ автоматического управлени процессом флотации и устройство дл его осуществлени
SU755312A1 (ru) * 1978-05-06 1980-08-15 Evgenij M Lyamkin Устройство автоматического контроля эффективности многостадийного флотационного процесса обогащения 1
SU854449A1 (ru) * 1979-11-30 1981-08-15 Ленинградский Ордена Ленина,Ордена Октябрьской Революции И Ордена Трудового Красного Знамени Горный Институт Им.Г.В.Плеханова Способ автоматического управлени процессом флотации
AU548578B2 (en) * 1981-08-28 1985-12-19 Nauchno-Proizvodstvennoe Obiedinenie "Sojuztsvetmetavtomatica" Froth flotation
GB2146253A (en) * 1983-09-12 1985-04-17 Haden Drysys Int Ltd A separation system including a flotation tank having level control means
US4952308A (en) * 1986-12-10 1990-08-28 Beloit Corporation Pressurized flotation module and method for pressurized foam separation
DE3911233A1 (de) * 1989-04-07 1990-10-11 Voith Gmbh J M Verfahren zur regelung einer flotationsanlage
ZA905849B (en) * 1989-07-26 1991-05-29 Univ Newcastle Res Ass A method of operating a plurality of minerals separation flotation cells
DE4009042C2 (de) * 1990-03-21 1996-12-12 Voith Gmbh J M Vorrichtung zur Abtrennung von Luft aus Flotationstrüben

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0693318A1 (fr) * 1994-07-22 1996-01-24 Voith Sulzer Stoffaufbereitung GmbH Dispositif de flottaison
US5770050A (en) * 1994-07-22 1998-06-23 Voith Sulzer Stoffaufbereitung Gmbh Flotation apparatus
WO2003026801A1 (fr) * 2001-09-27 2003-04-03 Outokumpu Oyj Procede de reglage de variation d'alimentation dans un circuit de flottation de mineraux precieux
EP1457597A3 (fr) * 2003-03-11 2007-10-17 Andritz AG Méthode pour regler le fonctionnement d'une cellule de flottation

Also Published As

Publication number Publication date
CA2101710A1 (fr) 1994-01-31
FI933396A0 (fi) 1993-07-29
JPH06154655A (ja) 1994-06-03
ATE145840T1 (de) 1996-12-15
US5330655A (en) 1994-07-19
EP0581196A3 (fr) 1994-04-13
NO300005B1 (no) 1997-03-17
NO932733D0 (no) 1993-07-29
DE4225117C1 (de) 1994-03-31
BR9302561A (pt) 1994-03-22
NO932733L (no) 1994-01-31
FI933396A7 (fi) 1994-01-31
EP0581196B1 (fr) 1996-12-04

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