Magnetic separation of substances on the basis of the different surface charges thereof

    公开(公告)号:AU2008327967B2

    公开(公告)日:2013-03-14

    申请号:AU2008327967

    申请日:2008-11-17

    Applicant: BASF SE SIEMENS AG

    Abstract: The invention relates to a method for separating at least one first material from a mixture containing said at least one first material and at least one second material. Said method comprises the following steps: (A) a suspension of the mixture containing at least one first material and at least one second material and at least one magnetic particle is produced in a suitable suspending agent; (B) the pH of the suspension obtained in step (A) is adjusted to a value at which the at least one first material and the at least one magnetic particle have opposite surface charges such that the same agglomerate; (C) the agglomerate obtained in step (B) is separated by applying a magnetic field; and (D) the agglomerate separated in step (C) is split by adjusting the pH to a value at which the at least one first material and the at least one magnetic particle have identical surface charges in order to obtain the at least one first material.

    Processing rich ores using magnetic particles

    公开(公告)号:AU2008294826B2

    公开(公告)日:2013-02-07

    申请号:AU2008294826

    申请日:2008-09-01

    Applicant: BASF SE SIEMENS AG

    Abstract: The invention relates to a method for removing at least one first substance from a mixture that contains the at least one first substance and at least one second substance. Said method comprises the following steps: (A) contacting the mixture containing at least one first substance and at least one second substance with at least one surface-active substance, optionally in the presence of at least one dispersant, the surface-active substance binding to the at least one first substance, (B) optionally adding at least one dispersant to the mixture obtained in step (A) to obtain a dispersion, (C) treating the dispersion obtained in step (A) or (B) with at least one hydrophobic magnetic particle so that the at least one first substance to which the at least one surface-active substance is bound and the at least one magnetic particle are added thereto, (D) removing the addition product obtained in step (C) from the mixture by applying a magnetic field, (E) breaking down the removed addition product obtained in step (D) to obtain the at least one first substance and the at least one magnetic particle as separate entities.

    ПЕРЕРАБОТКА ЦЕННЫХ РУД С ПОМОЩЬЮ МАГНИТНЫХ ЧАСТИЦ

    公开(公告)号:EA017511B1

    公开(公告)日:2013-01-30

    申请号:EA201000407

    申请日:2008-09-01

    Applicant: BASF SE

    Abstract: Данноеизобретениеотноситсяк способувыделениякакминимумодногопервоговеществаизсмеси, содержащейэтокакминимумоднопервоевеществои какминимумодновтороевещество, которыйвключаетв себяследующиестадии: (A) приведениев контактсмеси, содержащейкакминимумоднопервоевеществои какминимумодновтороевеществокакминимумс однимповерхностно-активнымвеществом, принеобходимости, вприсутствиикакминимумодногодисперсионногосредства, причемповерхностно-активноевеществосвязываетсякакминимумс однимпервымвеществом; (B) принеобходимости, добавлениекакминимумодногодисперсионногосредствак смеси, полученнойнастадии (A), дляполучениядисперсиинеобходимойконцентрации; (C) обработкадисперсиисостадии (A) или (B) какминимумоднойгидрофобноймагнитнойчастицейтакимобразом, чтокакминимумк одномупервомувеществу, ккоторомуприсоединенокакминимумодноповерхностно-активноевещество, присоединяетсякакминимумоднамагнитнаячастица; (D) отделениепродуктаприсоединениясостадии (C) отсмесив результатеналожениямагнитногополя; (E) расщеплениеотделенногопродуктаприсоединениясостадии (D) дляполученияв раздельномвидекакминимумодногопервоговеществаи какминимумодноймагнитнойчастицы.

    86.
    发明专利
    未知

    公开(公告)号:AT550101T

    公开(公告)日:2012-04-15

    申请号:AT08851798

    申请日:2008-11-17

    Applicant: BASF SE

    Abstract: The present invention relates to a process for separating at least one first material from a mixture comprising this at least one first material and at least one second material, which comprises the steps: (A) production of a suspension of the mixture comprising at least one first material and at least one second material and at least one magnetic particle in a suitable suspension medium, (B) setting of 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 these agglomerate, (C) separation of the agglomerate obtained in step (B) from the suspension by application of a magnetic field and (D) dissociation of the agglomerate separated off in step (C) by setting of the pH to a value at which the at least one first material and the at least one magnetic particle bear the same surface charges in order to obtain the at least one first material.

    PROCESS FOR THE BENEFICIATION OF ORES BY MEANS OF HYDROPHOBIC SURFACES

    公开(公告)号:ZA201001077B

    公开(公告)日:2011-04-28

    申请号:ZA201001077

    申请日:2010-02-15

    Applicant: BASF SE

    Abstract: A process for separating at least one hydrophobic material from a mixture comprising this at least one hydrophobic material and at least one hydrophilic material, which comprises the steps: (A) preparation of a slurry or dispersion of the mixture to be treated in at least one suitable dispersion medium, (B) contacting of the slurry or dispersion from step (A) with at least one solid, hydrophobic surface to bind the at least one hydrophobic material to be separated off to this, (C) removal of the at least one solid, hydrophobic surface to which the at least one hydrophobic material is bound from step (B) from the slurry or dispersion in which the at least one hydrophilic material is comprised and (D) separation of the at least one hydrophobic material from the solid, hydrophobic surface.

    COMPUESTOS DE COBRE NANOPARTICULADOS.

    公开(公告)号:MX2010013971A

    公开(公告)日:2011-02-24

    申请号:MX2010013971

    申请日:2009-07-02

    Applicant: BASF SE

    Abstract: La presente invención se refiere a proceso para la obtención de compuestos de cobre nanoparticulados de superficie modificada, así como de suspensiones acuosas, que contienen compuestos de cobre nanoparticulados de superficie modificada. Además, la invención se refiere a los compuestos de cobre nanoparticulados de superficie modificada, que pueden ser obtenidos de acuerdo con este proceso y suspensiones acuosas de estos compuestos de cobre, así como su uso como principio activo antimicrobiano o catalizador.

    PARTICULAS DE OXIDO DE ZINC MODIFICADO.

    公开(公告)号:MX2011000420A

    公开(公告)日:2011-02-22

    申请号:MX2011000420

    申请日:2009-07-14

    Applicant: BASF SE

    Abstract: La invención se refiere a un método para producir partículas de ZnO modificado en donde una sal de zinc y una base se mezclan en un solvente polar y el solvente polar es eliminado opcionalmente después de la precipitación de un producto de precipitación, resultando en un residuo, en donde el residuo es absorbido en un solvente no polar, se agregan sustancias tensioactivas, se agregan opcionalmente otras sustancias activas y después las partículas de ZnO modificado se separan de otros subproductos. La invención también se refiere a materiales tales como plásticos, barnices o pinturas que contienen partículas de ZnO modificado. La invención también se refiere a un método para incorporar partículas de ZnO modificado en materiales, en donde las partículas de ZnO modificado se incorporan en los materiales en la forma de dispersiones o suspensiones, y al uso de partículas de ZnO modificado para proteger materiales contra los efectos de luz, calor, oxígeno o radicales, como catalizadores, para capas semiconductoras o para usos cosméticos.

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