中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

70 records (took 0.088 seconds)

    CONCENTRATION OF SUSPENSIONS
    42.
    发明专利
    CONCENTRATION OF SUSPENSIONS 未知

    公开(公告)号：ZA201501270B

    公开(公告)日：2016-05-25

    申请号：ZA201501270

    申请日：2015-02-25

    Applicant: BASF SE

    Inventor： ADKINS STEPHEN ,  BERGER ALEXSANDRO

    Abstract: A process of concentrating an aqueous suspension of solid particles, whereby an aqueous suspension of solid particles is introduced into a vessel, an organic polymeric flocculant is added to the aqueous suspension of solid particles thereby forming flocculated solids, the flocculated solids are allowed to settle to form a bed of solids in suspension at the lower end of the vessel, and the bed of solids are flowed from the vessel as an underflow, in which a portion of the bed of solids or underflow is transferred as a recycle stream to the vessel into or above the bed of solids. Furthermore, an active agent is added to the solids in the recycle stream. The active agent is selected from free radical agents, oxidising agents and reducing agents.

    ДИАМИННЫЕ СОЕДИНЕНИЯ И ИХ ПРИМЕНЕНИЕ ДЛЯ ОБРАТНОЙ ПЕННОЙ ФЛОТАЦИИ СИЛИКАТА ИЗ ЖЕЛЕЗНЫХ РУД
    43.
    发明专利
    ДИАМИННЫЕ СОЕДИНЕНИЯ И ИХ ПРИМЕНЕНИЕ ДЛЯ ОБРАТНОЙ ПЕННОЙ ФЛОТАЦИИ СИЛИКАТА ИЗ ЖЕЛЕЗНЫХ РУД 未知

    公开(公告)号：EA023145B1

    公开(公告)日：2016-04-29

    申请号：EA201391475

    申请日：2012-04-04

    Applicant: BASF SE

    Inventor： BITTNER CHRISTIAN ,  NIEBERLE JOERG ,  VON VACANO BERNHARD ULRICH ,  BERGER ALEXSANDRO ,  BOEHN ROLAND ,  OETTER GUENTER

    IPC: B03D1/01 ,  B03D1/004 ,  B03D101/02 ,  B03D103/04

    Abstract: Изобретениеотноситсяк способуобогащенияжелезногоминералаизсодержащейсиликатжелезнойрудыпутемобратнойфлотации, включающемудобавлениесобирающегоагентаиликомпозициисобирающегоагента, содержащегокакминимумодноизсоединенийформулвкоторых X означаюталифатическуюалкиленовуюгруппу, содержащую 2-6 атомовуглерода; Z означаеталифатическуюалкиленовуюгруппу, содержащую 2-6 атомовуглерода; Yозначаетаниони R означаетнасыщеннуюилиненасыщенную, линейнуюилиразветвленную, алифатическуюилиароматическуюуглеводороднуюгруппу, содержащуюот 7 до 23 атомовуглерода. Изобретениетакжеотноситсяк новымсоединениямформул (Ia) и (Ib), ккомпозициям, содержащимэтисоединения, атакжек применениюэтихсоединенийи композицийв качествесобирающихагентовдляобогащенияжелезногоминерала.

    Metal leach and recovery process
    44.
    发明专利
    Metal leach and recovery process 未知

    公开(公告)号：AU2013301565B2

    公开(公告)日：2016-02-25

    申请号：AU2013301565

    申请日：2013-08-07

    Applicant: BASF SE

    Inventor： NISBETT ANDREW ,  ADKINS STEPHEN ,  FLANAGAN IAN JOHN ,  BERGER ALEXSANDRO

    IPC: C22B3/20 ,  B01D21/01 ,  C22B15/00

    Abstract: The present invention relates to a metal leach and recovery process. The process involves subjecting a metal bearing material to a reactive process by combining said metal bearing material with a leaching agent to liberate at least one metal value and forming a first aqueous leach pulp. This first aqueous leach pulp is subjected to a solid liquid separation step thereby providing a first clarified aqueous leach solution and a second aqueous leach pulp. The first clarified aqueous leach solution is then subjected to solvent extraction thereby obtaining the first aqueous raffinate. The second aqueous leach pulp is subjected to at least two further solid liquid separation steps of which some or all are in a counter current decantation (CCD) arrangement. Each of the solid liquid separation steps of the CCD arrangement results in an aqueous liquor and aqueous suspension of solids wherein each aqueous suspension of solids resulting from each solid liquid separation step of the CCD arrangement is passed to the subsequent solid liquid separation step and the suspension of solids resulting from the final solid liquid separation step is removed from the process. Further, each aqueous liquor resulting from each solid liquid separation step of the CCD arrangement is passed to the previous solid liquid separation step. The further solid liquid separation steps result in at least one further clarified aqueous leach solution. The at least one further clarified aqueous leach solution is/are subjected to solvent extraction thereby obtaining at least one further aqueous raffinate. At least a portion of the one or more of the at least one further aqueous raffinates is fed into the final solid liquid separation is of the CCD arrangement. The process provides a flocculation system comprising either: (i) addition of an organic polymeric flocculant to or prior to at least one solid liquid separation step, which polymeric flocculant is formed from 2-acrylamido-2-methylpropane sulphonic acid (ATBS) or salts thereof as a homopolymer or copolymer with at least one water-soluble ethylenically unsaturated monomer; or (ii) addition of an organic polymeric flocculant and at least one support agent to or prior to at least one solid liquid separation step, which at least one support agent is selected from at least one of the group consisting of oxidising agents, reducing agents, irradiation and free radical producing agents. The process provides significantly improved metal extraction and recovery.

    CONCENTRATION OF SUSPENSIONS
    45.
    发明专利
    CONCENTRATION OF SUSPENSIONS 未知

    公开(公告)号：ZA201403692B

    公开(公告)日：2015-08-26

    申请号：ZA201403692

    申请日：2014-05-21

    Applicant: BASF SE

    Inventor： HESS STEPHAN ,  ADKINS STEPHEN ,  BERGER ALEXSANDRO

    Abstract: A process of concentrating a suspension of solid particles in an aqueous medium comprising introducing into the suspension at least one organic polymeric flocculant and addition of an agent system, in which the solid particles in the suspension are flocculated by the action of the at least one organic polymeric flocculant and the so formed flocculated solid particles settle to form a settled layer of solids suspended in the aqueous medium, wherein the agent system comprises: i) at least one oxidising agent; ii) at least one control agent,

    METAL LEACH AND RECOVERY PROCESS
    47.
    发明专利
    METAL LEACH AND RECOVERY PROCESS 未知

    公开(公告)号：CA2879481A1

    公开(公告)日：2014-02-13

    申请号：CA2879481

    申请日：2013-08-07

    Applicant: BASF SE

    Inventor： NISBETT ANDREW ,  ADKINS STEPHEN ,  FLANAGAN IAN JOHN ,  BERGER ALEXSANDRO

    IPC: C22B3/20 ,  B01D21/01 ,  C22B15/00

    Abstract: The present invention relates to a metal leach and recovery process. The process involves subjecting a metal bearing material to a reactive process by combining said metal bearing material with a leaching agent to liberate at least one metal value and forming a first aqueous leach pulp. This first aqueous leach pulp is subjected to a solid liquid separation step thereby providing a first clarified aqueous leach solution and a second aqueous leach pulp. The first clarified aqueous leach solution is then subjected to solvent extraction thereby obtaining the first aqueous raffinate. The second aqueous leach pulp is subjected to at least two further solid liquid separation steps of which some or all are in a counter current decantation (CCD) arrangement. Each of the solid liquid separation steps of the CCD arrangement results in an aqueous liquor and aqueous suspension of solids wherein each aqueous suspension of solids resulting from each solid liquid separation step of the CCD arrangement is passed to the subsequent solid liquid separation step and the suspension of solids resulting from the final solid liquid separation step is removed from the process. Further, each aqueous liquor resulting from each solid liquid separation step of the CCD arrangement is passed to the previous solid liquid separation step. The further solid liquid separation steps result in at least one further clarified aqueous leach solution. The at least one further clarified aqueous leach solution is/are subjected to solvent extraction thereby obtaining at least one further aqueous raffinate. At least a portion of the one or more of the at least one further aqueous raffinates is fed into the final solid liquid separation is of the CCD arrangement. The process provides a flocculation system comprising either: (i) addition of an organic polymeric flocculant to or prior to at least one solid liquid separation step, which polymeric flocculant is formed from 2-acrylamido-2-methylpropane sulphonic acid (ATBS) or salts thereof as a homopolymer or copolymer with at least one water-soluble ethylenically unsaturated monomer; or (ii) addition of an organic polymeric flocculant and at least one support agent to or prior to at least one solid liquid separation step, which at least one support agent is selected from at least one of the group consisting of oxidising agents, reducing agents, irradiation and free radical producing agents. The process provides significantly improved metal extraction and recovery.

Patent Agency Ranking