EP0581196B1 - Regelung einer Flotationsanlage mit Primär- und Sekundärstufe - Google Patents

Regelung einer Flotationsanlage mit Primär- und Sekundärstufe Download PDF

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Publication number
EP0581196B1
EP0581196B1 EP93111761A EP93111761A EP0581196B1 EP 0581196 B1 EP0581196 B1 EP 0581196B1 EP 93111761 A EP93111761 A EP 93111761A EP 93111761 A EP93111761 A EP 93111761A EP 0581196 B1 EP0581196 B1 EP 0581196B1
Authority
EP
European Patent Office
Prior art keywords
stage
primary
overflow
primary stage
amount
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 - Lifetime
Application number
EP93111761A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0581196A2 (de
EP0581196A3 (enrdf_load_stackoverflow
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/de
Publication of EP0581196A3 publication Critical patent/EP0581196A3/xx
Application granted granted Critical
Publication of EP0581196B1 publication Critical patent/EP0581196B1/de
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.
  • a flotation plant in which the amount of foam of the primary flotation is regulated by returning cleaned suspension from the secondary to the primary flotation.
  • the amount of foam in the secondary flotation is not adjusted by regulating the suspension introduced into the secondary stage, but by foam discharge via a valve attached directly to the cell. With this control procedure, it was necessary to continuously check the overflow quantities on site at the secondary stage and to correct the level setpoints.
  • 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 foam channel level (small volume) is sensitive to changes in the primary overflow volume, which is why the primary overflow volume can be set very precisely and reproducibly using the bypass valve.
  • the secondary stage is always fed 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) reacts so sensitively to changes in the overflow quantity that the influence of different air contents in the overflow material is negligibly small and is reproducible Relationship between foam channel level and overflow quantity results.
  • 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 72 is also provided here, of which a weir 78 is also connected upstream.
  • 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, with the aid of which the foam-containing suspension is vented, as is known from EP 0447887. 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.
  • a pressure sensor 45 is used to keep the level in the container 38 constant as well as regulator 56 and valve 45 in line 42, via which a circulation quantity (in the bypass) is led to the secondary flotation stage 2.

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biotechnology (AREA)
  • General Engineering & Computer Science (AREA)
  • Paper (AREA)
  • Physical Water Treatments (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)
EP93111761A 1992-07-30 1993-07-22 Regelung einer Flotationsanlage mit Primär- und Sekundärstufe Expired - Lifetime EP0581196B1 (de)

Applications Claiming Priority (2)

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

Publications (3)

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

Family

ID=6464410

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93111761A Expired - Lifetime EP0581196B1 (de) 1992-07-30 1993-07-22 Regelung einer Flotationsanlage mit Primär- und Sekundärstufe

Country Status (9)

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

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4426159A1 (de) * 1994-07-22 1994-12-08 Voith Gmbh J M Flotationseinrichtung
US5804061A (en) * 1997-04-14 1998-09-08 Beloit Technologies, Inc. Multiflow pressurized deinking apparatus
US6073774A (en) * 1997-04-14 2000-06-13 Beloit Technologies, Inc. Pressurized deinking module with vent line
NO993560D0 (no) * 1999-07-20 1999-07-20 Abb Miljoeas Fremgangsmåte for fjerning av gass og forurensninger fra en vaeske
WO2001034304A1 (en) * 1999-11-12 2001-05-17 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
FI110872B (fi) * 2001-09-27 2003-04-15 Outokumpu Oy Menetelmä arvomineraalien vaahdotuspiirin syötevaihtelun hallitsemiseksi
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
AT412535B (de) * 2003-03-11 2005-04-25 Andritz Ag Maschf Verfahren zur regelung des betriebes einer flotationszelle
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
CA3085281A1 (en) * 2017-12-09 2019-06-13 OPEC Remediation Technologies Pty Limited Method and apparatus for separation of a substance from water

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

Also Published As

Publication number Publication date
NO932733L (no) 1994-01-31
EP0581196A2 (de) 1994-02-02
ATE145840T1 (de) 1996-12-15
DE4225117C1 (de) 1994-03-31
FI933396A7 (fi) 1994-01-31
NO932733D0 (no) 1993-07-29
FI933396A0 (fi) 1993-07-29
NO300005B1 (no) 1997-03-17
EP0581196A3 (enrdf_load_stackoverflow) 1994-04-13
US5330655A (en) 1994-07-19
JPH06154655A (ja) 1994-06-03
BR9302561A (pt) 1994-03-22
CA2101710A1 (en) 1994-01-31

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