EP2212027B1 - Separation magnetique de substances sur la base de leurs charges superficielles differentes - Google Patents

Separation magnetique de substances sur la base de leurs charges superficielles differentes Download PDF

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Publication number
EP2212027B1
EP2212027B1 EP08851798A EP08851798A EP2212027B1 EP 2212027 B1 EP2212027 B1 EP 2212027B1 EP 08851798 A EP08851798 A EP 08851798A EP 08851798 A EP08851798 A EP 08851798A EP 2212027 B1 EP2212027 B1 EP 2212027B1
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EP
European Patent Office
Prior art keywords
magnetic
suspension
magnetic particle
mixtures
substance
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.)
Not-in-force
Application number
EP08851798A
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German (de)
English (en)
Other versions
EP2212027A2 (fr
Inventor
Imme Domke
Alexej Michailovski
Norbert Mronga
Hartmut Hibst
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BASF SE
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BASF SE
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Priority to PL08851798T priority Critical patent/PL2212027T3/pl
Priority to EP08851798A priority patent/EP2212027B1/fr
Publication of EP2212027A2 publication Critical patent/EP2212027A2/fr
Application granted granted Critical
Publication of EP2212027B1 publication Critical patent/EP2212027B1/fr
Not-in-force legal-status Critical Current
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    • 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
    • B03C1/005—Pretreatment specially adapted for magnetic separation
    • B03C1/015—Pretreatment specially adapted for magnetic separation by chemical treatment imparting magnetic properties to the material to be separated, e.g. roasting, reduction, oxidation
    • 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
    • B03C1/32—Magnetic separation acting on the medium containing the substance being separated, e.g. magneto-gravimetric-, magnetohydrostatic-, or magnetohydrodynamic separation
    • 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

Definitions

  • the at least one first substance to be separated is a metal compound selected from the group consisting of sulfidic ores.
  • sulfide ores which can be used according to the invention are selected, for example, from the group of copper ores consisting of covellite CuS, molybdenum (IV) sulfide molybdate MoS 2 , chalcopyrite (copper gravel) CuFeS 2 , bornite Cu 5 FeS 4 , chalcocite (copper luster) Cu 2 S and Mixtures thereof.
  • oxidic compounds of metals and semimetals for example silicates or borates or other salts of metals and semimetals, for example phosphates, sulfates or oxides / hydroxides / carbonates and further salts may be present in the ore mixtures to be treated according to the invention, for example azurite [Cu 3 (CO 3 ) 2 (OH) 2 ], malachite [Cu 2 [(OH) 2 (CO 3 )]], barite (BaSO 4 ), monazite ((Ce, La, Nd) [PO 4 ]).
  • azurite [Cu 3 (CO 3 ) 2 (OH) 2 ] 2 ]
  • malachite [Cu 2 [(OH) 2 (CO 3 )]]
  • barite BaSO 4
  • monazite (Ce, La, Nd) [PO 4 ]
  • Other preferred sulfidic compounds are mentioned below.
  • Step (B) of the method according to the invention comprises adjusting the pH of the suspension obtained in step (A) to a value at which the at least one first material and the at least one magnetic particle bear opposite surface charges so that they agglomerate.
  • the agglomeration of the at least one first substance and the at least one magnetic particle is based on their different surface charge in aqueous suspension as a function of the pH.
  • the surface charge of a particle in equilibrium with the surrounding liquid phase is determined by the zeta potential ⁇ . This varies depending on the pH of the solution or suspension.
  • the surface charge of the particle changes sign, i. exactly at the isoelectric point, the zeta potential to be measured is ⁇ zero. If the zeta potential ⁇ on a y-axis is plotted against the pH value on the x-axis in a coordinate system, the resulting curve intersects the x-axis at the isoelectric point.
  • the determination of the isoelectric point of the substances present in the mixture can take place via the ⁇ -potential of the individual substances in aqueous solution.
  • the measured ⁇ potential varies with the type of device used, the method of measurement and the evaluation method. Important parameters to be reported are temperature, pH, concentration of the salt background solution, conductivity and measurement voltage, so that the parameters mentioned must be known for comparable measurements.
  • the isoelectric point (IEP) of SiO 2 is about 2. This measurement result is measured on a device "EKA” from Anton Parr. The method used is the flow partial measurement (data evaluation: Faibrother-Mastin): The temperature during the measurement is 25 to 30 ° C, the salt concentration (KCl) 1 mmol / L and the conductivity 150 to 1000 ⁇ S / cm.
  • step (B) the agglomeration of the at least one first substance and the at least one magnetic particle is based on their different surface charge in aqueous suspension as a function of the pH.
  • the pH can be adjusted according to step (D) of the process according to the invention by all methods known to the person skilled in the art, for example by adding at least one basic or at least one acidic compound to the agglomerate obtained in step (C), which is preferably present in suspension.
  • the at least one first material and the at least one magnetic particle are present in suspended form. These two substances can be separated from one another and from the suspending agent by all methods known to those skilled in the art.
  • the first substance to be separated preferably the metal compound to be separated
  • the suspending agent by distilling off the solvent or filtration.
  • the first substance thus obtained can be purified by further methods known to the person skilled in the art.
  • the suspending agent may, optionally after purification, be recycled back to the process of the invention.
  • the at least one magnetic particle is returned to the process of the invention in step (A).
  • R is greater than 1, then the corresponding compound is present after separation in a higher proportion in the mixture than before the mixture, d. H. this compound can be enriched at this pH. If R is less than 1, the corresponding compound is present after separation in a lower proportion in the equation, i. H. this compound can be removed from the mixture at this pH.

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  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Manufacture And Refinement Of Metals (AREA)

Abstract

La présente invention concerne un procédé de séparation d'au moins une première substance contenue dans un mélange qui contient ladite au moins une première substance et au moins une deuxième substance, lequel procédé consiste à (A) produire une suspension du mélange contenant au moins une première substance et au moins une deuxième substance ainsi qu'au moins une particule magnétique dans un milieu de suspension approprié, (B) ajuster le pH de la suspension obtenue à l'issue de l'étape (A) à une valeur, à laquelle ladite au moins une première substance et ladite au moins une particule magnétique portent des charges superficielles opposées, de sorte que la substance et la particule s'agglomèrent, (C) séparer l'agglomérat obtenu à l'issue de l'étape (B) par application d'un champ magnétique et (D) scinder l'agglomérat séparé à l'étape (C) par ajustement du pH à une valeur, à laquelle ladite au moins une première substance et ladite au moins une particule magnétique portent les mêmes charges superficielles, afin d'obtenir ladite au moins une première substance.

Claims (7)

  1. Procédé de séparation d'au moins une première substance d'un mélange contenant cette ou ces premières substances et au moins une seconde substance, comprenant les étapes suivantes :
    (A) la fabrication d'une suspension du mélange contenant au moins une première substance et au moins une seconde substance et d'au moins une particule magnétique dans un agent de suspension approprié,
    (B) l'ajustement du pH de la suspension obtenue à l'étape (A) à une valeur à laquelle la ou les premières substances et la ou les particules magnétiques portent des charges de surface contraires, de manière à ce qu'elles s'agglomèrent,
    (C) la séparation de l'agglomérat obtenu à l'étape (B) par application d'un champ magnétique, et
    (D) le clivage de l'agglomérat séparé à l'étape (C) par ajustement du pH à une valeur à laquelle la ou les premières substances et la ou les particules magnétiques portent des charges de surface identiques, afin d'obtenir la ou les premières substances, la ou les premières substances étant choisies dans le groupe constitué par les minerais sulfureux et leurs mélanges, et la ou les secondes substances étant choisies dans le groupe constitué par les composés oxydiques de métaux, les composés hydroxydiques de métaux et leurs mélanges.
  2. Procédé selon la revendication 1, caractérisé en ce que le pH est ajusté à l'étape (B) à une valeur située entre le point isoélectrique de la ou des premières substances et le point isoélectrique de la ou des particules magnétiques.
  3. Procédé selon la revendication 1 ou 2, caractérisé en ce que la ou les particules magnétiques sont choisies dans le groupe constitué par les métaux magnétiques et leurs mélanges, les alliages ferromagnétiques de métaux magnétiques et leurs mélanges, les oxydes de fer magnétiques, les ferrites cubiques de formule générale (I)

            M2+ xFe2+ 1-xFe3+ 2O4 ,     (I)

    avec
    M choisi parmi Co, Ni, Mn, Zn et leurs mélanges, et
    x ≤ 1,
    les ferrites hexagonaux et leurs mélanges.
  4. Procédé selon l'une quelconque des revendications 1 à 3, caractérisé en ce que l'agent de suspension est l'eau.
  5. Procédé selon l'une quelconque des revendications 1 à 4, caractérisé en ce que la suspension fabriquée à l'étape (A) contient au moins un système tampon.
  6. Procédé selon l'une quelconque des revendications 1 à 5, caractérisé en ce que la première substance est Cu2S et la seconde substance est SiO2.
  7. Procédé selon l'une quelconque des revendications 1 à 6, caractérisé en ce que la première substance est MoS2 et la seconde substance est SiO2.
EP08851798A 2007-11-19 2008-11-17 Separation magnetique de substances sur la base de leurs charges superficielles differentes Not-in-force EP2212027B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PL08851798T PL2212027T3 (pl) 2007-11-19 2008-11-17 Magnetyczne rozdzielanie substancji na podstawie ich zróżnicowanych ładunków powierzchniowych
EP08851798A EP2212027B1 (fr) 2007-11-19 2008-11-17 Separation magnetique de substances sur la base de leurs charges superficielles differentes

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP07120973 2007-11-19
EP08851798A EP2212027B1 (fr) 2007-11-19 2008-11-17 Separation magnetique de substances sur la base de leurs charges superficielles differentes
PCT/EP2008/065666 WO2009065802A2 (fr) 2007-11-19 2008-11-17 Séparation magnétique de substances sur la base de leurs charges superficielles différentes

Publications (2)

Publication Number Publication Date
EP2212027A2 EP2212027A2 (fr) 2010-08-04
EP2212027B1 true EP2212027B1 (fr) 2012-03-21

Family

ID=40667898

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08851798A Not-in-force EP2212027B1 (fr) 2007-11-19 2008-11-17 Separation magnetique de substances sur la base de leurs charges superficielles differentes

Country Status (12)

Country Link
US (1) US8329039B2 (fr)
EP (1) EP2212027B1 (fr)
CN (1) CN101903109B (fr)
AR (1) AR069354A1 (fr)
AT (1) ATE550101T1 (fr)
AU (1) AU2008327967B2 (fr)
CA (1) CA2705881A1 (fr)
CL (1) CL2008003439A1 (fr)
PE (1) PE20091296A1 (fr)
PL (1) PL2212027T3 (fr)
WO (1) WO2009065802A2 (fr)
ZA (1) ZA201004287B (fr)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2009272764B2 (en) * 2008-07-18 2014-11-20 Basf Se Selective substance separation using modified magnetic particles
BRPI0922451A2 (pt) 2008-12-11 2015-12-15 Basf Se processo para separar pelo menos um primeiro material a partir de uma mistura.
WO2010084635A1 (fr) * 2009-01-23 2010-07-29 財団法人大阪産業振興機構 Dispositif et procédé de traitement de mélange
CN102341178B (zh) 2009-03-04 2015-06-03 西门子公司 通过多级式调节进行有色金属矿物的磁分离
EP2403649B1 (fr) 2009-03-04 2013-08-28 Basf Se Agglomérats hydrophobes magnétiques
EP2498913B8 (fr) 2009-11-11 2014-10-08 Basf Se Procédé permettant d'augmenter le rendement lors d'un processus de séparation de minerais au moyen de particules magnétiques hydrophobes par l'apport ciblé d'énergie mécanique
BR112012011217A2 (pt) * 2009-11-11 2016-07-05 Basf Se processo para separar aglomerados de mineral de minério e pelo menos uma partícula magnética como constituintes magnéticos de uma dispersão aquosa , reator, e, uso do reator
US8475662B2 (en) * 2009-11-30 2013-07-02 Basf Se Modified HIMS process
PL2579987T3 (pl) * 2010-06-11 2020-08-24 Basf Se Zastosowanie naturalnie występujących składników magnetycznych z rud
US8865000B2 (en) 2010-06-11 2014-10-21 Basf Se Utilization of the naturally occurring magnetic constituents of ores
MX2013006028A (es) 2010-11-29 2013-07-29 Basf Corp Recuperacion magnetica de elementos de valor a partir de escoria.
AU2012213470A1 (en) 2011-02-01 2013-08-15 Basf Corporation Apparatus for continuous separation of magnetic constituents and cleaning magnetic fraction
AU2013258104A1 (en) 2012-05-09 2014-11-13 Basf Se Apparatus for resource-friendly separation of magnetic particles from non-magnetic particles
US9216420B2 (en) 2012-05-09 2015-12-22 Basf Se Apparatus for resource-friendly separation of magnetic particles from non-magnetic particles
WO2014029715A1 (fr) 2012-08-21 2014-02-27 Basf Se Agencement magnétique pour le transport de matériau magnétisé
WO2014068142A1 (fr) 2012-11-05 2014-05-08 Basf Se Appareil permettant la séparation continue de constituants magnétiques
US10675637B2 (en) 2014-03-31 2020-06-09 Basf Se Magnet arrangement for transporting magnetized material
WO2016083575A1 (fr) 2014-11-27 2016-06-02 Basf Se Entrée d'énergie pendant l'agglomération de séparation magnétique
CA2967215A1 (fr) 2014-11-27 2016-06-02 Basf Se Amelioration de la qualite de concentre
AU2016200868B2 (en) 2015-02-10 2021-05-13 Scandium International Mining Corporation Systems and processes for recovering scandium values from laterite ores
EP3181230A1 (fr) 2015-12-17 2017-06-21 Basf Se Ultraflottation avec des particules support magnétiquement réactives
PE20210804A1 (es) * 2018-08-13 2021-04-23 Basf Se Combinacion de separacion de portador magnetico y una separacion adicional para el procesamiento de minerales
AU2022231374A1 (en) 2021-03-05 2023-09-14 Basf Se Magnetic separation of particles supported by specific surfactants

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4225426A (en) * 1975-10-01 1980-09-30 Anglo-American Clays Corporation Magnetic beneficiation of clays utilizing magnetic particulates
US4225425A (en) * 1975-10-01 1980-09-30 Anglo-American Clays Corporation Method for separating metallic minerals utilizing magnetic seeding
US4219408A (en) 1978-04-27 1980-08-26 Anglo-American Clays Corporation Magnetic separation of minerals utilizing magnetic particulates
WO1983001397A1 (fr) 1981-10-26 1983-04-28 Snook, Harvey Flottation magnetique
US4643822A (en) * 1985-02-28 1987-02-17 The Secretary Of State For Trade And Industry In Her Britannic Majesty's Government Of The United Kingdom Of Great Britain And Northern Ireland Method of separation of material from material mixtures
US4834898A (en) * 1988-03-14 1989-05-30 Board Of Control Of Michigan Technological University Reagents for magnetizing nonmagnetic materials
AUPR319001A0 (en) 2001-02-19 2001-03-15 Ausmelt Limited Improvements in or relating to flotation
AU2009272764B2 (en) 2008-07-18 2014-11-20 Basf Se Selective substance separation using modified magnetic particles
BRPI0922451A2 (pt) 2008-12-11 2015-12-15 Basf Se processo para separar pelo menos um primeiro material a partir de uma mistura.
EP2403649B1 (fr) 2009-03-04 2013-08-28 Basf Se Agglomérats hydrophobes magnétiques
CN102341178B (zh) 2009-03-04 2015-06-03 西门子公司 通过多级式调节进行有色金属矿物的磁分离

Also Published As

Publication number Publication date
CN101903109B (zh) 2013-04-24
EP2212027A2 (fr) 2010-08-04
US20100307982A1 (en) 2010-12-09
CL2008003439A1 (es) 2010-01-11
PL2212027T3 (pl) 2012-08-31
US8329039B2 (en) 2012-12-11
ATE550101T1 (de) 2012-04-15
WO2009065802A3 (fr) 2009-08-20
WO2009065802A2 (fr) 2009-05-28
PE20091296A1 (es) 2009-09-30
ZA201004287B (en) 2011-08-31
AU2008327967A1 (en) 2009-05-28
CN101903109A (zh) 2010-12-01
AR069354A1 (es) 2010-01-13
AU2008327967B2 (en) 2013-03-14
CA2705881A1 (fr) 2009-05-28

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