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公开(公告)号：CA2892983C
公开(公告)日：2017-09-19
申请号：CA2892983
申请日：2014-01-17
Applicant: BASF SE
Inventor： ADKINS STEPHEN
Abstract: The invention relates to process of preparing a stabilized suspension, suitable for dewatering, which suspension comprises particulate solids dispersed in an aqueous liquid, said particulate solids comprises clay and mineral particles of size below 50 µm, which process comprises the steps of, (a) subjecting the suspension to a kinetic energy stage to produce a modified suspension; (b) adding a modified suspension stabilizing chemical, in which the kinetic energy stage is a shearing stage and/or application of ultrasonic energy to the suspension. The process also relates to a so stabilized suspension and a process of dewatering said stabilized suspension by the steps of, (c) addition of a water-soluble polymer intrinsic viscosity of at least 3 dl/g to the stabilized suspension of step (a); (d) dewatering the polymer treated suspension of step (c). The invention is particularly suited to dewatering of mature fine tailings derived from oil sands tailings. The process of the invention preferably involves rigidification of the suspension.
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公开(公告)号：PL2882878T3
公开(公告)日：2017-06-30
申请号：PL13745846
申请日：2013-08-07
Applicant: BASF SE
Inventor： NISBETT ANDREW , ADKINS STEPHEN , FLANAGAN IAN JOHN , BERGER ALEXSANDRO
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公开(公告)号：CA2793957C
公开(公告)日：2016-09-20
申请号：CA2793957
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 by gravity sedimentation of a first aqueous suspension of solid particles in a vessel is provided. The process comprises the steps of, adding at least one organic polymeric flocculant to the first aqueous suspension, thereby forming a suspension of flocculated solids, which flocculated solids settle to form a bed of consolidated solids, introducing an agent to form the second aqueous suspension, where the second aqueous suspension is of higher solids content than the first aqueous suspension, and where the agent is a free radical agent or an oxidising agent.
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公开(公告)号：CA2850895C
公开(公告)日：2016-07-05
申请号：CA2850895
申请日：2012-10-24
Applicant: BASF SE
Inventor： BERGER ALEXSANDRO , ADKINS STEPHEN , HESS STEPHAN
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：IN3777CHN2014A
公开(公告)日：2015-09-04
申请号：IN3777CHN2014
申请日：2014-05-20
Applicant: BASF SE
Inventor： BERGER ALEXSANDRO , ADKINS STEPHEN , HESS STEPHAN
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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Patent Agency Ranking
公开(公告)号：AU2012330464B2
公开(公告)日：2015-06-18
申请号：AU2012330464
申请日：2012-10-24
Applicant: BASF SE
Inventor： BERGER ALEXSANDRO , ADKINS STEPHEN , HESS STEPHAN
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：PE20150367A1
公开(公告)日：2015-03-14
申请号：PE2015000120
申请日：2013-07-29
Applicant: BASF SE
Inventor： BERGER ALEXSANDRO , ADKINS STEPHEN
Abstract: La invencion describe un proceso para la concentracion de una suspension acuosa de particulas solidas, que comprende las etapas de: la introduccion de la suspension acuosa de particulas solidas en un recipiente, la adicion de al menos un floculante polimerico organico a la suspension acuosa de particulas solidas, formandose con ello solidos floculadas, permitir que los solidos floculados se asienten de manera de formar un lecho de solidos en suspension en el extremo inferior del recipiente, hacer fluir el lecho de solidos desde el recipiente como un flujo inferior, en donde una porcion del lecho de solidos o del flujo inferior es transferida en forma de una corriente de reciclado hacia el recipiente en o por arriba del lecho de solidos, en donde se anade al menos un agente activo a los solidos en la corriente de reciclado, y en donde el por lo menos un agente activo se selecciona de entre el grupo que consiste en agentes de radicales libres, agentes oxidantes y agentes reductores
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公开(公告)号：PE03672015A1
公开(公告)日：2015-03-14
申请号：PE0001202015
申请日：2013-07-29
Applicant: BASF SE
Inventor： BERGER ALEXSANDRO , ADKINS STEPHEN
CPC classification number: C02F1/56 , C02F1/70 , C02F1/72 , C02F1/722 , C02F1/76 , C02F1/78 , C02F2101/10 , C02F2103/10 , C02F2103/16 , C02F2301/046 , C02F2305/02 , C02F2305/12
Abstract: La invencion describe un proceso para la concentracion de una suspension acuosa de particulas solidas, que comprende las etapas de: la introduccion de la suspension acuosa de particulas solidas en un recipiente, la adicion de al menos un floculante polimerico organico a la suspension acuosa de particulas solidas, formandose con ello solidos floculadas, permitir que los solidos floculados se asienten de manera de formar un lecho de solidos en suspension en el extremo inferior del recipiente, hacer fluir el lecho de solidos desde el recipiente como un flujo inferior, en donde una porcion del lecho de solidos o del flujo inferior es transferida en forma de una corriente de reciclado hacia el recipiente en o por arriba del lecho de solidos, en donde se anade al menos un agente activo a los solidos en la corriente de reciclado, y en donde el por lo menos un agente activo se selecciona de entre el grupo que consiste en agentes de radicales libres, agentes oxidantes y agentes reductores
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公开(公告)号：MX2014004667A
公开(公告)日：2014-08-18
申请号：MX2014004667
申请日：2012-10-24
Applicant: BASF SE
Inventor： BERGER ALEXSANDRO , ADKINS STEPHEN , HESS STEPHAN
Abstract: Un proceso de concentración de una suspensión en partículas sólidas en un medio acuoso que comprende introducir en la suspensión floculante por lo menos un polímero orgánico y la adición de un sistema de agente, en donde las partículas sólidas en la suspensión están floculadas por la acción de por lo menos un floculante polimérico orgánico y partículas sólidas así formadas floculadas se depositan para formar una capa asentada de sólidos en suspensión en el medio acuoso, en donde el sistema de agente comprende: i) por lo menos un agente oxidante; ii) por lo menos un agente de control.
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公开(公告)号：CA2897663A1
公开(公告)日：2014-08-07
申请号：CA2897663
申请日：2014-01-17
Applicant: BASF SE
Inventor： ADKINS STEPHEN
Abstract: The invention relates to a process of dewatering a suspension comprising particulate solids dispersed in an aqueous liquid, said particulate solids comprise 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 at least one anionic polymer and at least one cationic polymer to the suspension before, during or after step (a); (c) dewatering the treated 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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