公开(公告)号：CO6630183A2

公开(公告)日：2013-03-01

申请号：CO12202255

申请日：2012-11-09

Applicant: BASF SE

Inventor： STOCKS PAUL ,  FLANAGAN IAN JOHN ,  ADKINS STEPHEN ,  BRODT GREGOR

IPC: B01D21/01

Abstract: Un proceso de formación de una segunda suspensión acuosa de partículas sólidas (15) por sedimentación por gravedad de una primera suspensión acuosa de partículas sólidas (14) en un recipiente (13), que comprende los pasos de, agregar por lo menos un floculante polimérico orgánico (12) a la primera suspensión acuosa de partículas sólidas (14) formando de este modo una suspensión de sólidos floculados (11), cuyos sólidos floculados se decantan para formar un lecho de sólidos consolidados (5), introducción de una cantidad efectiva de un agente, en el i) lecho de sólidos consolidados (5) o u) los sólidos floculados que se sedimentan (11), con el fin de formar la segunda suspensión acuosa (15), en la cual la segunda suspensión acuosa de partículas sólidas (15) es de contenido más altos de sólidos que la primera suspensión acuosa de partículas sólidas (14), y en la cual el agente se selecciona del grupo que consiste en agentes radicales libres y agentes oxidantes, en donde el agente es un medio introducido seleccionado del grupo que consiste en A) uno o más rastrillos (10) que transportan el agente;B) una o más conductos (16) que ingresan a través de la parte superior del recipiente a través de los cuales el agente se introduce,C) una o más aberturas o conductos (17) en las paredes laterales del recipiente a través de los cuales el agente se introduce;D) una o más aberturas o conductos (18) en la base del recipiente a través de los cuales el agente se introduce;E) introducir el agente a través de una o más aberturas o conductos (19) en la línea de alimentación que transporta el lecho de sólidos consolidados desde la base del recipiente, con preferencia entre la base del recipiente y una bomba; yE) una o más aspersores (20) a través de los cuales el agente se introduce.

公开(公告)号：AU2011236476A1

公开(公告)日：2012-10-25

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.

公开(公告)号：ES2611933T3

公开(公告)日：2017-05-11

申请号：ES13745846

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: Un proceso de lixiviación y recuperación de metal comprende: (a) Someter un material que contiene metal a un proceso activo al combinar dicho material que contiene metal con un agente de lixiviación para liberar por lo menos un metal valioso de dicho material que contiene metal y obtener una primera pulpa de lixiviación acuosa que comprende una mezcla de sólidos lixiviados y una solución de lixiviación acuosa que comprende por lo menos un metal valioso, un agente de lixiviación y agua; (b) Someter la primera pulpa de lixiviación acuosa a una etapa de separación líquidos sólidos para proporcionar una primera solución de lixiviación acuosa clarificada y una segunda pulpa de lixiviación acuosa, en la que la segunda pulpa de lixiviación acuosa comprende un mayor contenido de sólidos que la primera pulpa de lixiviación acuosa; (c) Someter la primera solución de lixiviación acuosa clarificada a extracción de disolvente obteniendo por lo tanto un primer refinado acuoso; (d) Someter la segunda pulpa de lixiviación acuosa a por lo menos dos etapas separación líquidos sólidos adicionales de las cuales algo o todas las etapas de separación líquidos sólidos adicionales están en disposición de decantación contracorriente (CCD) en la que cada etapa de separación líquidos sólidos de la disposición CCD resulta en un licor acuoso y una suspensión de sólidos acuosa, en donde cada suspensión acuosa de sólidos resulta de cada etapa de separación líquidos sólidos de la disposición CCD que pasa a la etapa de separación líquidos sólidos posterior de la disposición CCD y la suspensión de sólidos acuosa que resulta de la etapa de separación líquidos sólidos final de la disposición CCD se retira del proceso y en el que cada licor acuoso que resulta de cada etapa de separación líquidos sólidos de la disposición CCD se pasa a la etapa de separación líquidos sólidos anterior, en el que por lo menos una solución de lixiviación acuosa clarificada adicional resulta de por lo menos una de las etapas de separación líquido sólidos adicionales; (e) Someter por lo menos una solución de lixiviación acuosa clarificada adicional a extracción obteniendo por lo tanto por lo menos un refinado acuoso adicional; (f) Alimentar por lo menos una parte de uno o más refinados acuosos adicionales en la etapa de separación líquidos sólidos final de la disposición CCD; en donde por lo menos una de las etapas de separación líquidos sólidos se somete a un sistema de floculación en el que el sistema de floculación comprende: (i) Adición de un floculante polimérico orgánico a o antes de por lo menos una etapa de separación líquido sólido, cuyo floculante polimérico se forma de ácido 2-acrilamido-2-metilpropano sulfónico (ATBS) o sales del mismo como un homopolímero o un copolímero con por lo menos un monómero etilenicamente insaturado soluble en agua; o (ii) Adición de un floculante polimérico orgánico y por lo menos un agente de soporte a o antes de por lo menos una etapa de separación líquido sólido, que en por lo menos un agente de soporte se selecciona de por lo menos uno del grupo que consiste de agentes oxidantes, agentes de reducción, agentes que producen radicales libres e irradiación.

公开(公告)号：CA2879481C

公开(公告)日：2017-01-24

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.

公开(公告)号：BR112012024951A2

公开(公告)日：2016-07-12

申请号：BR112012024951

申请日：2011-04-08

Applicant: BASF SE

Inventor： BRODT GREGOR ,  FLANAGAN IAN JOHN ,  STOCKS PAUL ,  ADKINS STEPHEN

IPC: B01D21/01

Abstract: processo para formar uma segunda suspensão aquosa de partículas sólidas um processo para formar uma segunda suspensão aquosa de partículas sólidas (15), pela sedimentação por gravidade, de uma primeira suspensão aquosa de partículas (14) em um vaso (13), compreendendo as etapas de adicionar, pelo menos, um floculante orgânico polimérico (12) à primeira suspensão aquosa de partículas sólidas (14) formando deste modo uma suspensão de sólidos floculados (11), sólidos floculados estes que sedimentam para formar um leito de sólidos consolidados (5), introdução de uma quantidade eficaz de um agente, no i) leito de sólidos consolidados (5) ou ii) nos sólidos floculados que estão sedimentando (11), de modoa formar a segunda suspensão aquosa (15), em que a segunda suspensão aquosa de partículas sólidas (15) é de teor de sólidos superior a da primeira suspensão aquosa de partículas sólidas (14), e em que o agente é selecionado do grupo que consiste de agentes de radical livre e agentes oxidantes, em que o agente é introduzindo por meios selecionados do grupo que consiste de a) um ou mais rodos (10) que transportam o agente; b) um ou mais conduítes (16) que entram através da parte de cima do vaso através dos quais o agente é introduzido c) uma ou mais aberturas ou conduítes (17) nas paredes laterais do vaso através dos quais o agente é introduzido; d) uma ou mais aberturas ou conduítes (18) na base do vaso através do qual o agente é introduzido; e) introduzir o agente através de uma ou mais aberturas ou conduítes (19) na linha de alimentação que transporta o leito de sólidos consolidados da base do vaso, preferivelmente entre a base do vaso e uma bomba; e f) um ou mais espargidores (20) através dos quais o agente é introduzido.

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.

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.

公开(公告)号：CA2939319A1

公开(公告)日：2015-11-19

申请号：CA2939319

申请日：2015-05-12

Applicant: BASF SE

Inventor： ADKINS STEPHEN

IPC: C02F11/14 ,  C02F1/56

Abstract: A process of dewatering a suspension comprises particulate solids dispersed in an aqueous liquid, said particulate solids comprise clay and mineral particles of size below 50 µm. The process comprises the steps of (a) addition of at least one first polymer and of at least one second polymer to the suspension; and (b) dewatering the polymer treated suspension of step (a). The at least one first polymer and at least one second polymer have different intrinsic viscosities IV. The process is particularly suitable for the disposal of tailings and other waste material resulting from mining and mineral processing operations. The process is particularly suitable for the treatment of oil sand tailings and especially mature fine tailings (MFT) derived from oil sand tailings.

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,

公开(公告)号：AP3332A

公开(公告)日：2015-07-31

申请号：AP2012006524

申请日：2011-04-08

Applicant: BASF SE

Inventor： ADKINS STEPHEN ,  STOCKS PAUL ,  FLANAGAN IAN JOHN

IPC: B01D21/01

Abstract: Gravity sedimentation of a first aqueous suspension of solid particles in a vessel results in formation of a second aqueous suspension of solid particles in the present invention. The process involves adding at least one organic polymeric flocculant to the first aqueous suspension to form a suspension of flocculated solid. The flocculated solids settle to form a bed of consolidated solids. Introducing an effective amount of an agent into the bed of consolidated solids or into the flocculated solids that are settling leads to formation of the second aqueous suspension. The second aqueous suspension of solid particles has a higher solids content than the first aqueous suspension of solid particles. The agent is a free radical agent or an oxidizing agent.