Patents by Inventor Alexej Michailovski
Alexej Michailovski has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 8377311Abstract: The present invention relates to a process of the invention 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) Contacting of at least one magnetic particle and at least one bifunctional molecule or an adduct of the two with the mixture comprising the at least one first material and at least one second material so that an adduct is formed from the at least one magnetic particle, the bifunctional compound of the general formula (I) and the at least one first material, (B) suspension of the adduct obtained in step (A) in a suitable suspension medium, (C) separation of the adduct present in the suspension from step (B) from the suspension by application of a magnetic field, (D) if appropriate, dissociation of the adduct separated off in step (C) in order to obtain the at least one first material. a corresponding adduct and the use of such an adduct for the separation of mixtures of materials.Type: GrantFiled: July 15, 2009Date of Patent: February 19, 2013Assignees: BASF SE, Seimens AGInventors: Imme Domke, Alexej Michailovski, Norbert Mronga, Hartmut Hibst, Juergen Tropsch, Susanne Stutz
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Patent number: 8372290Abstract: 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 at least the following steps: (A) contacting of the mixture comprising at least one first material and at least one second material with at least one surface-active substance, if appropriate in the presence of at least one dispersion medium, with the surface-active substance binding to the at least one first material, (B) if appropriate, addition of at least one dispersion medium to the mixture obtained in step (A) in order to obtain a dispersion, (C) treatment of the dispersion from step (A) or (B) with at least one hydrophobic magnetic particle so that the at least one first material to which the at least one surface-active substance is bound and the at least one magnetic particle agglomerate, (D) separation of the agglomerate from step (C) from the mixture by application of a magnetic field in order to obtain thType: GrantFiled: March 3, 2010Date of Patent: February 12, 2013Assignees: BASF SE, Siemens AktiengesellschaftInventors: Imme Domke, Alexej Michailovski, Norbert Mronga, Werner Hartmann, Wolfgang Krieglstein, Vladimir Danov
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Patent number: 8342336Abstract: In a device and a method for extracting non-magnetic ores from a pulp comprising non-magnetic ore particles and having a solid fraction of at least 30 mass percent, the pulp flows continuously through a reactor in the direction of flow and magnetic or magnetizable magnet particles that form ore magnetic particle agglomerations with the non-magnetic ore particles are added to said pulp. The ore magnetic particle agglomerations are moved by a magnetic field into an accumulation range of the reactor, and are then discharged out of reactor range and separated into ore and magnetic particles. In a device and a method, the separated magnetic particles are treated, in particular hydrophobized, such that during a new interaction with non-magnetic ore particles, new ore magnetic particle agglomerations are formed. Accordingly, a high yield of ores can be obtained and the mine can be operated in an economical and environmentally friendly manner.Type: GrantFiled: February 10, 2009Date of Patent: January 1, 2013Assignee: Siemens AktiengesellschaftInventors: Michael Diez, Imme Domke, Werner Hartmann, Hartmut Hibst, Wolfgang Krieglstein, Alexej Michailovski, Norbert Mronga, Michael Riebensahm, Wolfgang Schmidt, Thomas Servay
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Patent number: 8329039Abstract: 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.Type: GrantFiled: November 17, 2008Date of Patent: December 11, 2012Assignee: BASF SEInventors: Imme Domke, Alexej Michailovski, Norbert Mronga, Hartmut Hibst
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Patent number: 8318025Abstract: 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 following steps: (A) contacting of the mixture comprising at least one first material and at least one second material with at least one surface-active substance, if appropriate in the presence of at least one dispersant, resulting in the surface-active substance becoming attached to the at least one first material, (B) if appropriate, addition of at least one dispersant to the mixture obtained in step (A) to give a dispersion having a suitable concentration, (C) treatment of the dispersion from step (A) or (B) with at least one hydrophobic magnetic particle so that the at least one first material to which the at least one surface-active substance is bound and the at least one magnetic particle become attached to one another, (D) separation of the addition product from step (C) from the mixture by application ofType: GrantFiled: September 1, 2008Date of Patent: November 27, 2012Assignee: BASF SEInventors: Imme Domke, Norbert Mronga, Alexej Michailovski, Hartmut Hibst, Thomas Servay, Rainer Klopsch
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Publication number: 20120264111Abstract: The present invention relates to a stable mixture comprising surface-modified particles which are obtained by reacting metal oxide or semimetal oxide particles with at least one compound selected from among silicon-comprising compounds bearing at least one metaloxy radical and optionally further alkoxy and/or hydroxy radical(s) and at least one solvent, at least one surface-active substance or a mixture thereof, a process for producing the mixture, the use of these particles in systems in which they are brought into contact with at least one solvent, where the mass ratio of solvent to modified particle is greater than 500, and also the use of these particles in agglomeration-deagglomeration cycles.Type: ApplicationFiled: March 29, 2012Publication date: October 18, 2012Applicants: BASF CORPORATION, BASF SEInventors: Stephan DEUERLEIN, Imme Domke, Alexej Michailovski, Reinhold Rieger, Piyada Charoensirisomboon, David F. Blackwood, Christian Eichholz, Robert Bayer, Dennis Lösch, Igor Shishkov
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Publication number: 20120228413Abstract: 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 following steps (A) contacting of the mixture comprising at least one first material and at least one second material with at least one magnetic particle in the presence of at least one dispersion medium so that the at least one first material and the at least one magnetic particle agglomerate, (B) if appropriate, addition of further dispersion medium to the dispersion obtained in step (A), (C) separation of the agglomerate from step (A) or (B) from the mixture by application of a magnetic field, (D) and dissociation of the agglomerate separated off in step (C) in order to obtain the at least one first material and the at least one magnetic particle separately, with an energy input of at least 10 kW/m3 being introduced into the dispersion in step (A).Type: ApplicationFiled: November 10, 2010Publication date: September 13, 2012Applicants: Siemens AG, BASF SEInventors: Reinhold Rieger, Alexej Michailovski, Imme Domke
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Publication number: 20120189512Abstract: A method for magnetic ore separation and/or dressing is provided, in which metalliferous recoverable materials are separated from conveyed metalliferous ore rock.Type: ApplicationFiled: May 31, 2010Publication date: July 26, 2012Inventors: Vladimir Danov, Imme Domke, Bernd Gromoll, Werner Hartmann, Wolfgang Krieglstein, Alexej Michailovski, Norbert Mronga, Reinhold Rieger
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Publication number: 20120132032Abstract: The present invention relates to a process for the separation of at least one metal from a slag, comprising that at least one metal and further components, comprising at least step (A) grinding the slag, (B) if appropriate, contacting the ground slag of step (A) with at least one surface-active substance and/or at least one magnetic particle, if appropriate in the presence of at least one dispersant, resulting in formation of agglomerates of the at least one metal and the at least one magnetic particle, (C) if appropriate, addition of at least one dispersant to the mixture obtained in step (B) to give a dispersion having a suitable concentration, and (D) separation of the agglomerates from the mixture of step (B) or (C) by application of a magnetic field, and to the use of at least one magnetic particle for the separation of slag.Type: ApplicationFiled: November 29, 2011Publication date: May 31, 2012Applicants: BASF Corporation, BASF SEInventors: Imme Domke, Wolfgang Rohde, Reinhold Rieger, Alexej Michailovski, Dennis Loesch, Stephan Deuerlein, Igor Shishkov, David F. Blackwood, Henrik Junicke, Frank Bozich
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Publication number: 20120088306Abstract: Provided is a method of assaying noble metals in a mineral and/or ceramic matrix in the content range from 0.03 to 500 mg/kg. The method comprises dry thermal treatment of a homogenized sample in a reducing atmosphere, extraction in an oxidizing medium, and atomic spectrometric quantification of the noble metals by means of ICP-QMS.Type: ApplicationFiled: October 7, 2011Publication date: April 12, 2012Applicant: BASF SEInventors: Walter Grasser, Andreas Groß, Hans Päbst, Imme Domke, Alexej Michailovski
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Publication number: 20120058463Abstract: The present invention relates to a stable mixture comprising surface-modified particles which are obtained by reacting metal oxide or semimetal oxide particles with at least one compound selected from among silicon-comprising compounds bearing one, two or three alkoxy radicals and at least one solvent, at least one surface-active substance or a mixture thereof, the use of these particles in systems in which they are brought into contact with at least one solvent, where the mass ratio of solvent to modified particle is greater than 500, and also the use of these particles in agglomeration-deagglomeration cycles.Type: ApplicationFiled: September 2, 2011Publication date: March 8, 2012Applicants: Siemens AG, BASF SEInventors: Stephan DEUERLEIN, Imme Domke, Alexej Michailovski, Reinhold Rieger, Piyada Charoensirisomboon
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Publication number: 20120000857Abstract: The present invention relates to a process for separating at least one first material from a mixture comprising this at least one first material, at least one second material and at least one third material, which comprises at least the following steps: (A) contacting of the mixture comprising at least one first material, at least one second material and at least one third material with at least one hydrocarbon in an amount of from 0.01 to 0.Type: ApplicationFiled: February 22, 2010Publication date: January 5, 2012Applicants: SIEMENS AKTIENGESELLSCHAFT, BASF SEInventors: Imme Domke, Alexej Michailovski, Norbert Mronga
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Publication number: 20110309003Abstract: The present invention relates to an agglomerate of at least one particle P which is hydrophobicized on the surface with at least one first surface-active substance and at least one magnetic particle MP which is hydrophobicized on the surface with at least one second surface-active substance, a process for producing it and also the use of these agglomerates.Type: ApplicationFiled: March 3, 2010Publication date: December 22, 2011Applicants: SIEMENS AG, BASF SEInventors: Imme Domke, Hartmut Hibst, Alexej Michailovski, Norbert Mronga, Werner Hartmann, Wolfgang Krieglstein, Vladimir Danov
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Publication number: 20110303772Abstract: The present invention relates to a process for separating at least one first material from a mixture comprising this at least one first material, at least one second material and magnetic particles, which comprises the following steps (A) at least partial removal of the magnetic particles by application of a magnetic field gradient, optionally in the presence of at least one dispersing medium, to give a mixture comprising at least one first material and at least one second material and a reduced amount of magnetic particles, (B) contacting of the mixture comprising at least one first material and at least one second material from step (A) with magnetic particles so that the at least one first material and the magnetic particles agglomerate, (C) separation of the agglomeration product from the mixture from step (B) by application of a magnetic field gradient and (D) dissociation of the agglomeration product separated off in step (C) in order to obtain the at least one first material and the magnetic particlesType: ApplicationFiled: May 27, 2011Publication date: December 15, 2011Applicants: Siemens AG, BASF SEInventors: Alexej MICHAILOVSKI, Imme DOMKE
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Publication number: 20110303773Abstract: 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 at least the following steps: (A) contacting of the mixture comprising at least one first material and at least one second material with at least one surface-active substance, if appropriate in the presence of at least one dispersion medium, with the surface-active substance binding to the at least one first material, (B) if appropriate, addition of at least one dispersion medium to the mixture obtained in step (A) in order to obtain a dispersion, (C) treatment of the dispersion from step (A) or (B) with at least one hydrophobic magnetic particle so that the at least one first material to which the at least one surface-active substance is bound and the at least one magnetic particle agglomerate, (D) separation of the agglomerate from step (C) from the mixture by application of a magnetic field in order to obtain thType: ApplicationFiled: March 3, 2010Publication date: December 15, 2011Applicants: SIEMENS AG, BASF SEInventors: Imme Domke, Alexej Michailovski, Norbert Mronga, Werner Hartmann, Wolfgang Krieglstein, Vladimir Danov
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Publication number: 20110272623Abstract: The present invention relates to a dispersion at least comprising particles comprising at least one magnetic iron oxide as component A and a solvent mixture as component B comprising (B1) 5% to 95% by weight of at least one water-miscible organic solvent LM as component B1 and (B2) 5% to 95% by weight of water as component B2, the sum of components B1 and B2 making 100% by weight, and to a method for producing a dispersion of this kind, comprising at least the steps (I) mixing particles comprising at least one magnetic iron oxide with at least one water-miscible organic solvent LM and water, (II) homogenizing the mixture from step (I), where a shearing energy of at least 2 kW/m3 is introduced into the mixture in step (II).Type: ApplicationFiled: May 5, 2011Publication date: November 10, 2011Applicants: Siemens AG, BASF SEInventors: Imme DOMKE, Wolfgang ROHDE, Daniel Schäfer, Alexej MICHAILOVSKI, Jürgen OSWALD, Reinhold RIEGER, Piyada CHAROENSIRISOMBOON, Florian STRICKER, Alexander WALLON, Jenny REUBER, Jan-Dirk ARNDT
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Publication number: 20110240527Abstract: The present invention relates to a process for separating at least one first material from a mixture comprising this at least one first material in an amount of from 0.001 to 1.Type: ApplicationFiled: December 9, 2009Publication date: October 6, 2011Applicants: BASF SE, Siemens AGInventors: Imme Domke, Alexej Michailovski, Norbert Mronga
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Publication number: 20110229384Abstract: The present invention relates to a process for separating at least one first substance from a mixture comprising this at least one first substance and at least one second substance, comprising the steps of (A) bringing the mixture comprising at least one first substance and at least one second substance into contact with at least one surface-active substance, (B) if required, addition of at least one dispersing medium to the mixture obtained in step (A) in order to obtain a dispersion, and (C) separation of the adduct of at least one first substance and at least one surface-active substance from the dispersion from step (A) or (B), for example by means of flotation, at least one additive which is either a monomolecular compound comprising amino and carboxyl groups or derivatives thereof or a polymeric compound obtainable by reaction of alkylene oxides and/or aziridines, or mixtures thereof, being added to the mixture comprising at least one first substance and at least one second substance.Type: ApplicationFiled: March 14, 2011Publication date: September 22, 2011Applicant: BASF SEInventors: Alexej MICHAILOVSKI, Imme Domke, Frank Bozich, David F. Blackwood
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Publication number: 20110127201Abstract: 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 using magnetic particles with which the at least one first material agglomerates.Type: ApplicationFiled: November 22, 2010Publication date: June 2, 2011Inventors: Imme Domke, Reinhold Rieger, Alexej Michailovski, Christian Bittner
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Publication number: 20110120954Abstract: The present invention relates to a process of the invention 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) Contacting of at least one magnetic particle and at least one bifunctional molecule or an adduct of the two with the mixture comprising the at least one first material and at least one second material so that an adduct is formed from the at least one magnetic particle, the bifunctional compound of the general formula (I) and the at least one first material, (B) suspension of the adduct obtained in step (A) in a suitable suspension medium, (C) separation of the adduct present in the suspension from step (B) from the suspension by application of a magnetic field, (D) if appropriate, dissociation of the adduct separated off in step (C) in order to obtain the at least one first material. a corresponding adduct and the use of such an adduct for the separation of mixtures of materials.Type: ApplicationFiled: July 15, 2009Publication date: May 26, 2011Applicants: BASF SE, Siemens AGInventors: Imme Domke, Alexej Michailovski, Norbert Mronga, Hartmut Hibst, Juergen Tropsch, Susanne Stutz