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公开(公告)号：AU2013298635B2
公开(公告)日：2016-04-07
申请号：AU2013298635
申请日：2013-07-29
Applicant: BASF SE
Inventor： BERGER ALEXSANDRO , ADKINS STEPHEN
Abstract: A process of concentrating an aqueous suspension of solid particles, comprising the steps of, introducing the aqueous suspension of solid particles into a vessel, addition of at least one organic polymeric flocculant to the aqueous suspension of solid particles thereby forming flocculated solids, allowing the flocculated solids to settle to form a bed of solids in suspension at the lower end of the vessel, flowing the bed of solids 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, in which an active agent is added to the solids in the recycle stream and wherein the active agent is selected from the group consisting of free radical agents, oxidising agents and reducing agents.
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公开(公告)号：CL2015000317A1
公开(公告)日：2015-05-15
申请号：CL2015000317
申请日：2015-02-10
Applicant: BASF SE
Inventor： BERGER ALEXSANDRO , ADKINS STEPHEN , NISBETT ANDREW , FLANAGAN IAN JOHN
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公开(公告)号：CL2015000226A1
公开(公告)日：2015-05-15
申请号：CL2015000226
申请日：2015-01-29
Applicant: BASF SE
Inventor： ADKINS STEPHEN , BERGER ALEXSANDRO
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公开(公告)号：AU2013301565A1
公开(公告)日：2015-02-26
申请号：AU2013301565
申请日：2013-08-07
Applicant: BASF SE
Inventor： NISBETT ANDREW , ADKINS STEPHEN , FLANAGAN IAN JOHN , BERGER ALEXSANDRO
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.
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公开(公告)号：PE12152014A1
公开(公告)日：2014-09-17
申请号：PE0006002014
申请日：2012-10-24
Applicant: BASF SE
Inventor： BERGER ALEXSANDRO , ADKINS STEPHEN , HESS STEPHAN
CPC classification number: C02F1/54 , C02F1/56 , C02F1/722 , C02F1/725 , C02F1/76 , C02F1/78 , C02F2305/14
Abstract: SE REFIERE A UN PROCESO PARA LA CONCENTRACION DE UNA SUSPENSION DE PARTICULAS SOLIDAS EN UN MEDIO ACUOSO, EL CUAL COMPRENDE LA INTRODUCCION EN LA SUSPENSION DE UN FLOCULANTE POLIMERICO ORGANICO TAL COMO EL HOMOPOLIMERO DE ACRILATO DE SODIO, HOMOPOLIMERO DE ACRILAMIDA, ENTRE OTROS, Y LA ADICION DE UN SISTEMA DE AGENTES QUE COMPRENDE a) UN AGENTE OXIDANTE TAL COMO AGUA DE OZONO O PEROXIDO DE HIDROGENO, Y b) UN AGENTE DE CONTROL QUE CONTIENE i) UN COMPONENTE ACTIVADOR TAL COMO IONES DE HIERRO (II)(Fe2+), IONES DE COBRE (II)(Cu2+), ENTRE OTROS, QUE AUMENTA LA ACTIVIDAD DEL AGENTE OXIDANTE, Y ii) UN COMPONENTE SUPRESOR QUE DISMINUYE LA CONCENTRACION DEL COMPONENTE ACTIVADOR; EN DONDE LAS PARTICULAS SOLIDAS EN LA SUSPENSION SE FLOCULAN Y LUEGO SE SEDIMENTAN PARA FORMAR UNA CAPA SEDIMENTADA DE SOLIDOS EN EL MEDIO ACUOSO. DICHA SUSPENSION DE PARTICULAS SOLIDAS SE DERIVA DE OPERACIONES DE PROCESAMIENTO MINERAL, DE ENERGIA O SUSTRATOS DE RESIDUOS
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Patent Agency Ranking16.发明专利
公开(公告)号：CA2897660A1
公开(公告)日：2014-07-24
申请号：CA2897660
申请日：2014-01-17
Applicant: BASF SE
Inventor： ADKINS STEPHEN
Abstract: The present invention relates to a process of dewatering a suspension comprising particulate solids dispersed in an aqueous liquid, said particulate solids comprises clay and mineral particles of size below 50 µ?t?, which process comprises the steps of (a) subjecting the suspension to a kinetic energy stage to produce a modified suspension; (b) addition of solid polymeric particles to the suspension, wherein step (a) can be conducted before, during or after step (b); (c) dewatering the modified suspension obtained after having conducted steps (a) and (b), in which the kinetic energy stage is a shearing stage and/or application of ultrasonic energy to the suspension.
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公开(公告)号：AP201407628A0
公开(公告)日：2014-05-31
申请号：AP201407628
申请日：2012-10-24
Applicant: BASF SE
Inventor： HESS STEPHAN , BERGER ALEXSANDRO , ADKINS STEPHEN
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公开(公告)号：AP2014007628A0
公开(公告)日：2014-05-31
申请号：AP2014007628
申请日：2012-10-24
Applicant: BASF SE
Inventor： HESS STEPHAN , BERGER ALEXSANDRO , ADKINS STEPHEN
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,
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公开(公告)号：CA2876794A1
公开(公告)日：2014-02-06
申请号：CA2876794
申请日：2013-07-29
Applicant: BASF SE
Inventor： BERGER ALEXSANDRO , ADKINS STEPHEN
Abstract: A process of concentrating an aqueous suspension of solid particles, comprising the steps of, introducing the aqueous suspension of solid particles into a vessel, addition of at least one organic polymeric flocculant to the aqueous suspension of solid particles thereby forming flocculated solids, allowing the flocculated solids to settle to form a bed of solids in suspension at the lower end of the vessel, flowing the bed of solids 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, in which an active agent is added to the solids in the recycle stream and wherein the active agent is selected from the group consisting of free radical agents, oxidising agents and reducing agents.
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公开(公告)号：AU2011236476B2
公开(公告)日：2013-09-05
申请号：AU2011236476
申请日：2011-04-08
Applicant: BASF SE
Inventor： STOCKS PAUL , FLANAGAN IAN JOHN , BRODT GREGOR , ADKINS STEPHEN
IPC: B01D21/01
Abstract: A process of forming a second aqueous suspension of solid particles (15) by gravity sedimentation of a first aqueous suspension of solid particles (14) in a vessel (13), comprising the steps of, adding at least one organic polymeric flocculant (12) to the first aqueous suspension of solid particles (14) thereby forming a suspension of flocculated solids (1 1 ), which flocculated solids settle to form a bed of consolidated solids (5), introduction of an effective amount of an agent, into the i) bed of consolidated solids (5) or ii) the flocculated solids that are settling (1 1 ), in order to form the second aqueous suspension (15), in which the second aqueous suspension of solid particles (15) is of higher solids content than the first aqueous suspension of solid particles (14), and in which the agent is selected from the group consisting of free radical agents and oxidising agents, wherein the agent is introduced means selected from the group consisting of A) one or more rakes (10) which convey the agent; B) one or more conduits (16) entering through the top of the vessel through which the agent is introduced C) one or more apertures or conduits (17) in the side walls of the vessel through which the agent is introduced; D) one or more apertures or conduits (18) in the base of the vessel through which the agent is introduced; E) introducing the agent through one or more apertures or conduits (19) in the feed line conveying the bed of consolidated solids from the base of the vessel, preferably between the base of the vessel and a pump; and F) one or more sparges (20) through which the agent is introduced.
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