EP2676733A1 - Dispositif de séparation de particules magnétiques et/ou magnétisables d'une suspension et son utilisation - Google Patents

Dispositif de séparation de particules magnétiques et/ou magnétisables d'une suspension et son utilisation Download PDF

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Publication number
EP2676733A1
EP2676733A1 EP12172517.0A EP12172517A EP2676733A1 EP 2676733 A1 EP2676733 A1 EP 2676733A1 EP 12172517 A EP12172517 A EP 12172517A EP 2676733 A1 EP2676733 A1 EP 2676733A1
Authority
EP
European Patent Office
Prior art keywords
flotation cell
magnetic
magnetic separator
flotation
suspension
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.)
Withdrawn
Application number
EP12172517.0A
Other languages
German (de)
English (en)
Inventor
Wolfgang Krieglstein
Ralph Oliver Schmidt
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.)
Primetals Technologies Germany GmbH
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Priority to EP12172517.0A priority Critical patent/EP2676733A1/fr
Priority to RU2014143267A priority patent/RU2014143267A/ru
Priority to CN201380032003.7A priority patent/CN104394994A/zh
Priority to PCT/EP2013/060562 priority patent/WO2013189685A1/fr
Publication of EP2676733A1 publication Critical patent/EP2676733A1/fr
Withdrawn legal-status Critical Current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
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C1/00—Magnetic separation
    • B03C1/02—Magnetic separation acting directly on the substance being separated
    • B03C1/10—Magnetic separation acting directly on the substance being separated with cylindrical material carriers
    • B03C1/12—Magnetic separation acting directly on the substance being separated with cylindrical material carriers with magnets moving during operation; with movable pole pieces
    • 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
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C1/00—Magnetic separation
    • B03C1/02—Magnetic separation acting directly on the substance being separated
    • B03C1/23—Magnetic separation acting directly on the substance being separated with material carried by oscillating fields; with material carried by travelling fields, e.g. generated by stationary magnetic coils; Eddy-current separators, e.g. sliding ramp
    • B03C1/24—Magnetic separation acting directly on the substance being separated with material carried by oscillating fields; with material carried by travelling fields, e.g. generated by stationary magnetic coils; Eddy-current separators, e.g. sliding ramp with material carried by travelling fields
    • B03C1/247—Magnetic separation acting directly on the substance being separated with material carried by oscillating fields; with material carried by travelling fields, e.g. generated by stationary magnetic coils; Eddy-current separators, e.g. sliding ramp with material carried by travelling fields obtained by a rotating magnetic drum
    • 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
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C1/00—Magnetic separation
    • B03C1/02—Magnetic separation acting directly on the substance being separated
    • B03C1/30—Combinations with other devices, not otherwise provided for
    • 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
    • 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
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C2201/00—Details of magnetic or electrostatic separation
    • B03C2201/18—Magnetic separation whereby the particles are suspended in a liquid
    • 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
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C2201/00—Details of magnetic or electrostatic separation
    • B03C2201/20—Magnetic separation whereby the particles to be separated are in solid form

Definitions

  • the invention further relates to a use of such a device.
  • Magnetic separators are already known and are used in particular in the mining industry and the metal industry, but also in other industries. That's how it describes RU 2365421 C1 a magnetic separator having a drum and a magnet assembly which is rotatable about the drum axis of the drum and includes permanent magnets for wet separation.
  • drum separators In particular low-field magnetic separators for the wet treatment of particularly strong magnetic iron ores, usually work on the principle of Aushebescheidung.
  • Flotation is a physical separation process for separating fine-grained mixtures of solids, such as ores and gangue, in an aqueous slurry by means of air bubbles due to a different surface wettability of the particles contained in the suspension. It is used for the treatment of mineral resources and in the processing of preferably mineral substances with a low to moderate content of a useful component or a valuable material, for example in the form of non-ferrous metals, iron, metals of rare earths and / or precious metals and non-metallic mineral resources. In general, an application of the flotation but also in other technical fields, such as wastewater treatment, already well known.
  • the WO 2006/069995 A1 describes a flotation device in the form of a pneumatic flotation cell with a housing comprising a flotation chamber, with at least one nozzle arrangement, here referred to as ejectors, further with at least one gassing, called air ventilation devices or aerators when using air, and a collecting container for a in the flotation formed foam product.
  • a suspension of water and fine-grained solid mixed with reagents is generally introduced into a flotation chamber via at least one nozzle arrangement.
  • the purpose of the reagents is to ensure that, in particular, the valuable particles or valuable material particles, which are preferably to be separated off, are rendered hydrophobic in the suspension.
  • xanthates are used as reagents, in particular to selectively hydrophobize sulfidic ore particles.
  • the At least one nozzle arrangement gas in particular air, supplied, which comes into contact with the hydrophobic particles in the suspension.
  • the hydrophobic particles adhere to forming gas bubbles, so that the gas bubble structures, also called aeroflocs, float and form the foam product on the surface of the suspension.
  • the foam product is discharged into a collecting container and usually thickened.
  • the quality of the foam product or the separation efficiency of the flotation process depends inter alia on the probability of collision between a hydrophobic particle and a gas bubble.
  • pneumatic flotation are, for example, the relaxation flotation or column flotation.
  • hybrid flotation cells which represent a combination of a pneumatic flotation cell with a columnar flotation cell, fines with particle diameters in the range of 20 microns and less are deposited particularly well.
  • agitator floatation is also based on the introduction of gas bubbles into the flotation process, it is not commonly referred to as a pneumatic flotation process.
  • the production of desired gas bubbles, in particular desired size distributions of the gas bubbles takes place by means of an agitator.
  • suitable flotation devices are therefore also u.a. referred to as agitator cells.
  • the above flotation processes are generally carried out by means of corresponding flotation devices, in particular flotation cells.
  • a flotation is carried out such that the recyclable material is discharged upwards with the foam.
  • a flotation cell can also be operated vice versa, wherein the recyclable material containing magnetic and / or magnetizable particles at the lower outlet is discharged from the flotation cell and non-magnetic and / or non-magnetizable particles, the so-called waste, on the foam up out of the Flotationshunt be discharged.
  • This type of flotation also called "reverse flotation" is used in particular in the treatment of iron ores.
  • the two mentioned separation processes ie the magnetic separation and the flotation, each require for their realization a minimum volume or mass related machine or process throughput and a certain plant footprint, the machine base and further mixing vessel for chemical conditioning of the suspension, eg for the addition of hydrophobizing Flotation chemicals to be provided.
  • a base for the laying of pipelines and the installation of pumps is needed, which connect the different parts of the system of magnetic separation with those of the flotation.
  • the required piping system for connecting the magnetic separator (s) and flotation cell (s) can be significantly simplified and shortened and pumps for the transport of the suspension can be saved. This significantly reduces the cost of operating the device and simplifies its monitoring by operators.
  • the at least one flotation cell is arranged vertically above the at least one magnetic separator.
  • a flotation cell is arranged vertically above a magnetic separator.
  • the flow conditions in flotation cells can be adjusted so that agglomerates forming in the suspension of magnetic and / or magnetizable particles, i. Recyclable particles, and further non-magnetic and / or non-magnetizable particles, i. Waste materials are destroyed. This is done in particular by a turbulent flow guidance and / or a sufficiently high flow velocity in the flotation cell.
  • the recyclable material flow coming from the flotation cell can be processed particularly efficiently in a downstream, below arranged magnetic separator, wherein the valuable material flow can flow away without the aid of pumps and thus without additional energy expenditure in the direction of the magnetic separator.
  • a guide between the at least one flotation cell and the at least one magnetic separator which exerts a high shear force on coming from the at least one flotation cell material flow and destroyed agglomerates and destroyed thus favors the separation of waste materials still contained in the agglomerates.
  • it is a guide that generates a turbulent flow of the recyclable material stream.
  • a device can serve as a guide, for example, which generates strong swirling in the material flow, displaces it into a swirling motion or greatly accelerates it.
  • At least one tampon valve is preferably arranged between the flotation cell and the magnetic separator, through which the material flow from the flotation cell into the magnetic separator is convertible.
  • the tampon valve allows a homogenization of the recyclable material flow and its distribution in the application area of the magnetic separator.
  • the at least one magnetic separator can also be arranged vertically above the at least one flotation cell.
  • a magnetic separator is arranged vertically above a flotation cell.
  • a guide between the at least one magnetic separator and the at least one flotation cell which has a high shear on the at least one Magnetseparator forthcoming material flow exerts and destroys contained agglomerates and thus promotes the separation of waste contained in the agglomerates.
  • a guide that generates a turbulent flow of the recyclable material flow.
  • a device can serve as a guide, for example, which generates strong swirling in the material flow, displaces it into a swirling motion or greatly accelerates it.
  • the at least one flotation cell comprises at least one ejector for injecting the at least one recyclable material stream into a flotation chamber of the flotation cell, wherein the magnetic separator is connected to the at least one ejector via the piping system.
  • the valuable streams of several flotation cells can be fed to a single magnetic separator or the valuable streams of several Magnetseparatoren a single flotation cell are supplied.
  • the at least one magnetic separator is preferably formed by a drum separator described above.
  • the at least one flotation cell is preferably formed by a hybrid flotation cell described above.
  • the at least one magnetic separator and the at least one flotation cell are arranged vertically stacked in a common support and / or housing device. This facilitates the arrangement of the separation units to each other and the installation of the piping system in a small space.
  • FIG. 1 1 schematically shows a first device 1 for separating magnetic and / or magnetizable particles from a suspension 9, which also contains non-magnetic and / or non-magnetizable particles, comprising a magnetic separator 3 and a flotation cell 2.
  • FIG. 2 shows a section FIG. 1 with a more concrete representation of the flotation cell 2 and the magnetic separator 3.
  • the magnetic separator 3 and the flotation cell 2 are in a common support and / or Housing device 4 space-saving vertically stacked arranged and connected to each other via a piping system, such that the magnetic separator 3 as well as the flotation cell 2 of a recyclable material flow 10, 10 'comprising at least a portion of the magnetic and / or magnetizable particles can flow.
  • the flotation cell 2 is installed above the magnetic separator 3.
  • the piping system not shown in detail comprises generally and in the figures all areas in which the recyclable material flow 10, 10 'between the magnetic separator (s) and Flotati-onzelle (s) is transported or passed.
  • the suspension 9 is via ejectors 2b (see FIG. 2 ) are injected into the flotation chamber 2 a of the flotation cell 2 and separated into a material stream 10 containing magnetic and / or magnetizable particles and a waste stream 11 containing non-magnetic and / or non-magnetizable particles.
  • the waste stream is discharged via a foam collecting channel 2c (which is known by the term "reverse flotation").
  • the material flow 10 from the flotation cell 10, which is configured in particular as a hybrid flotation cell now flows via a tampon valve 6 down into the magnetic separator 3, where a further separation of the material flow 10 in a still higher quality waste stream 10 'and a further waste stream 11' takes place.
  • the magnetic separator 3 is designed in particular as a drum separator with a drum 3a and magnets 3b arranged thereon.
  • FIG. 3 schematically shows a second device 1 'for separating magnetic and / or magnetizable particles from a suspension 9 containing further non-magnetic and / or non-magnetizable particles with two flotation cells 2, 2', which are arranged above a magnetic separator 3.
  • the magnetic separator 3 and the flotation cells 2, 2 ' are preferably stacked vertically stacked vertically in a common support and / or housing device 4 and connected to each other via a piping system such that the magnetic separator 3 as well as the flotation cells 2, 2' of a recyclable material flow 10, 10 'comprising at least a portion of the magnetic and / or magnetizable particles can be flowed through.
  • the flotation cells 2, 2 ' are installed above the magnetic separator 3.
  • a guide 7 is arranged, which flows through the material flow 10.
  • the guide device 7 is set up to impart a swirl to the material stream 10, by which agglomerates of magnetic and / or magnetizable particles as well as non-magnetic and / or non-magnetizable particles contained are dissolved.
  • the guide 7 is formed here for example by a piece of pipe with a helical baffle insert and integrated into the piping system.
  • the suspension 9 is injected into the flotation cells 2, 2 'and separated into a material stream 10 containing magnetic and / or magnetizable particles and a respective waste stream 11 containing non-magnetic and / or non-magnetizable particles.
  • the waste stream 11 flows in each case via a foam collecting trough, not shown in detail here.
  • the recyclable material flow 10 from the flotation cells 2, 2 ' which are designed in particular as hybrid flotation cells, now flows via a tampon valve 6 down into the magnetic separator 3, where a further separation of the recyclable material stream 10 into a still higher-quality recyclable material stream 10' and a further waste stream 11 ' he follows.
  • FIG. 4 schematically shows a third device 1 "for separating magnetic and / or magnetizable particles from a suspension 9 further comprising non-magnetic and / or non-magnetizable particles with a magnetic separator 3, which is arranged above a flotation cell 2.
  • the magnetic separator 3 and the flotation cell 2 are vertically stacked in a common support and / or housing device 4 space-saving and connected to each other via a piping system, such that the magnetic separator 3 as well as the flotation cell 2 of a recyclable material 10, 10 'comprising at least a portion of the magnetic and / or
  • the magnetic separator 3 is installed above the flotation cell 2.
  • the suspension 9 is introduced into the magnetic separator 3 and into a material stream 10 'comprising magnetic and / or magnetizable particles and a respective waste stream 11' containing non-magnetic and / or non-magnetizable particles separated.
  • the recyclable material flow 10 'from the magnetic separator 3 d now flows down into the flotation cell 2, in particular via the ejector thereof, where further separation of the valuable material flow 10' into a still higher-quality material flow 10 and a further waste flow 11 takes place.
  • FIG. 5 schematically shows a fourth device 1 "'for separating magnetic and / or magnetizable particles from a suspension 9 further comprising non-magnetic and / or non-magnetizable particles with two Magnetseparatoren 3, 3', which are arranged above a flotation cell 2.
  • Die Magnetseparatoren 3, 3 'and the flotation cell 2 are stacked vertically stacked in a common support and / or housing device 4 and interconnected via a piping system, such that the magnetic separators 3, 3' as well as the flotation cell 2 of a recyclable material flow 10, 10th
  • the magnetic separators 3, 3 ' are installed above the flotation cell 2.
  • the suspension 9 is introduced into the magnetic separators 3, 3' and incorporated into a material stream 10 'containing magnetic and / or magnetizable particles / or magnetizable particles and a respective waste stream 1 1 'containing non-magnetic and / or non-magnetizable particles separated.
  • the recyclable material flow 10 'from the magnetic separators 3, 3' now flows down into the flotation cell 2, where a further separation of the recyclable material stream 10 'into a still higher-quality recyclable material stream 10 and a further waste stream 11 takes place.
  • FIGS. 1 to 5 only show examples of the device according to the invention.
  • the number of magnetic separators, the flotation cells and their arrangement to each other within the scope of the invention vary.
  • the positioning of the magnetic separators and flotation cells to each other can vary within wide limits, as long as the concept that a space-saving arrangement with vertical stacking selected is, is respected.
  • the illustrated devices are particularly suitable for the separation of ore suspensions, in particular of iron ore suspensions, in which the valuable stream usually leaves the flotation cell through the lower outlet and not via the foam collecting channel 2c.

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Biotechnology (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Separation Of Solids By Using Liquids Or Pneumatic Power (AREA)
  • Paper (AREA)
  • Processing Of Solid Wastes (AREA)
EP12172517.0A 2012-06-19 2012-06-19 Dispositif de séparation de particules magnétiques et/ou magnétisables d'une suspension et son utilisation Withdrawn EP2676733A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP12172517.0A EP2676733A1 (fr) 2012-06-19 2012-06-19 Dispositif de séparation de particules magnétiques et/ou magnétisables d'une suspension et son utilisation
RU2014143267A RU2014143267A (ru) 2012-06-19 2013-05-23 Устройство для отделения магнитных и/или имеющих возможность намагничивания частиц от суспензии и его применение
CN201380032003.7A CN104394994A (zh) 2012-06-19 2013-05-23 用于从悬浮液中分离磁性的和/或能磁化的颗粒的设备和其应用
PCT/EP2013/060562 WO2013189685A1 (fr) 2012-06-19 2013-05-23 Dispositif pour isoler des particules magnétiques et/ou magnétisables présentes dans une suspension et son utilisation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP12172517.0A EP2676733A1 (fr) 2012-06-19 2012-06-19 Dispositif de séparation de particules magnétiques et/ou magnétisables d'une suspension et son utilisation

Publications (1)

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EP2676733A1 true EP2676733A1 (fr) 2013-12-25

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EP12172517.0A Withdrawn EP2676733A1 (fr) 2012-06-19 2012-06-19 Dispositif de séparation de particules magnétiques et/ou magnétisables d'une suspension et son utilisation

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EP (1) EP2676733A1 (fr)
CN (1) CN104394994A (fr)
RU (1) RU2014143267A (fr)
WO (1) WO2013189685A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019214118A1 (fr) * 2018-05-08 2019-11-14 淄博名堂教育科技有限公司 Dispositif de filtre d'élimination de fer utilisé pour une solution de sulfate de cuivre
EP3424600A4 (fr) * 2017-01-11 2019-11-27 Institute of Process Engineering, Chinese Academy of Sciences Système de séparation magnétique continu assisté par gaz pour procédé entier

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU1278035A1 (ru) * 1985-05-31 1986-12-23 Иркутский Ордена Трудового Красного Знамени Политехнический Институт Пневматическа флотационна машина
US5192423A (en) * 1992-01-06 1993-03-09 Hydro Processing & Mining Ltd. Apparatus and method for separation of wet particles
US5224604A (en) * 1990-04-11 1993-07-06 Hydro Processing & Mining Ltd. Apparatus and method for separation of wet and dry particles
WO2006069995A1 (fr) 2004-12-28 2006-07-06 Siemens Aktiengesellschaft Colonne de flottation pneumatique comportant un recipient de collecte de mousse
RU2365421C1 (ru) 2008-04-17 2009-08-27 Государственное образовательное учреждение высшего профессионального образования "Московский государственный горный университет" (МГГУ) Магнитный сепаратор

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FR2791281B1 (fr) * 1999-03-23 2001-06-08 Thide Environnement Installation de traitement de solides carbones issus d'un four de thermolyse de dechets urbains et/ou industriels, et dispositif de separation d'une telle installation
US6968956B2 (en) * 2002-02-22 2005-11-29 Regents Of The University Of Minnesota Separation apparatus and methods
CN1234461C (zh) * 2004-04-15 2006-01-04 北京矿冶研究总院 一种磁浮选机
CN200970544Y (zh) * 2006-11-24 2007-11-07 沈阳三新网络科技有限公司 永磁喷射泵浮选精选槽

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU1278035A1 (ru) * 1985-05-31 1986-12-23 Иркутский Ордена Трудового Красного Знамени Политехнический Институт Пневматическа флотационна машина
US5224604A (en) * 1990-04-11 1993-07-06 Hydro Processing & Mining Ltd. Apparatus and method for separation of wet and dry particles
US5192423A (en) * 1992-01-06 1993-03-09 Hydro Processing & Mining Ltd. Apparatus and method for separation of wet particles
WO2006069995A1 (fr) 2004-12-28 2006-07-06 Siemens Aktiengesellschaft Colonne de flottation pneumatique comportant un recipient de collecte de mousse
RU2365421C1 (ru) 2008-04-17 2009-08-27 Государственное образовательное учреждение высшего профессионального образования "Московский государственный горный университет" (МГГУ) Магнитный сепаратор

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3424600A4 (fr) * 2017-01-11 2019-11-27 Institute of Process Engineering, Chinese Academy of Sciences Système de séparation magnétique continu assisté par gaz pour procédé entier
WO2019214118A1 (fr) * 2018-05-08 2019-11-14 淄博名堂教育科技有限公司 Dispositif de filtre d'élimination de fer utilisé pour une solution de sulfate de cuivre

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Publication number Publication date
CN104394994A (zh) 2015-03-04
RU2014143267A (ru) 2016-08-10
WO2013189685A1 (fr) 2013-12-27

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