Deflocculation And Flocculation Patents (Class 209/5)
  • Patent number: 11208332
    Abstract: Methods and compositions for improving performance of flocculants in an industrial production process. Methods include pH triggered cross-linking reaction between a flocculating agent, such as dextran, and a composition comprising a boronic acid-containing polymer. The pH trigger can be provided by a fluid having a pH of 8 or more. The production process can be a Bayer Process and the fluid is caustic liquor or slurry in the fluid circuit of the Bayer, wherein the reaction time is reduced over conventional methods and the cross-linked dextran composition effectuates improved flocculation of the trihydrate particles.
    Type: Grant
    Filed: September 30, 2019
    Date of Patent: December 28, 2021
    Assignee: Ecolab USA Inc.
    Inventors: Jing Wang, Kevin O'Brien, Mingli Wei, Weiguo Cheng, Jinfeng Wang, Kevin McDonald, Xinyu C. Huang
  • Patent number: 11155478
    Abstract: A transitional treatment composition and methods of treating coal refuse are provided. The transitional treatment composition comprises an anionic acrylate-acrylamide copolymer having from about 30 mole percent to about 50 mole percent (meth)acrylate, from about 50 mole percent to about 70 mole percent (meth)acrylamide, and a reduced specific viscosity of from about 18 dL/g to about 30 dL/g. The transitional treatment composition can be made down in an aqueous liquid.
    Type: Grant
    Filed: July 13, 2017
    Date of Patent: October 26, 2021
    Assignee: Ecolab USA Inc.
    Inventors: Christopher Ryan Greulich, Kevin McDonald, Weiguo Cheng
  • Patent number: 11111374
    Abstract: There is disclosed a multivalent cation containing copolymer derived from one or more ethylenically unsaturated acids. The copolymer has the following characteristics: (a) an intrinsic viscosity of at least about 3 dl/g when measured in 1 M Na Cl solution at 25° C.; (b) the copolymer is derived from a monomer mixture comprising an ethylenically unsaturated acid and at least one comonomer, the ethylenically unsaturated acid present in an amount in the range of from about % to about 65% by weight; and (c) a residual comonomer content is less than 1000 ppm when the comonomer is an acrylamide. The copolymer, inter alia, is useful as a flocculant for treating an aqueous slurry comprising particulate material, preferably tailings from a mining operation.
    Type: Grant
    Filed: November 14, 2016
    Date of Patent: September 7, 2021
    Assignee: BASF SE
    Inventors: Stephen John Adkins, Holger Misslitz, Mitchell Louis Catling
  • Patent number: 11040378
    Abstract: A dosing apparatus for dosing a powder product inside containers includes a hopper provided with an inner cavity for containing the product, a lower portion provided with a supply duct with a terminal aperture for the outflow of the product, a metering screw rotating inside the supply duct and a washing manifold provided with an inlet opening and containing at least a sonotrode. In a cleaning configuration of the dosing apparatus, the washing manifold is connected to the hopper coupling the inlet opening to the supply duct, so as to receive and contain a washing liquid introduced in the hopper. The sonotrode is activated to produce alternate pressure waves capable of generating in the washing liquid air bubbles adapted to propagate towards the inner cavity through the supply duct, and to implode thus creating shock waves.
    Type: Grant
    Filed: May 22, 2017
    Date of Patent: June 22, 2021
    Assignee: I.M.A. INDUSTRIA MACCHINE AUTOMATICHE S.P.A.
    Inventor: Claudio Trebbi
  • Patent number: 10994281
    Abstract: Provided is a method for separating particles, a separation apparatus, and a separation system.
    Type: Grant
    Filed: September 29, 2017
    Date of Patent: May 4, 2021
    Assignee: ARKRAY, Inc.
    Inventor: Masahiro Kozuka
  • Patent number: 10694722
    Abstract: Systems and methods for intensive recirculating aquaculture are provided herein. An example system includes water sourced from a first segment of a saline aquifer, a recirculating aquaculture system receiving the sourced water and producing discharge water, and a water discharge point located within second segment of the saline aquifer disposed below the first segment of the saline aquifer.
    Type: Grant
    Filed: May 17, 2016
    Date of Patent: June 30, 2020
    Assignee: Atlantic Sapphire IP, L.L.C.
    Inventors: Thue Holm, Johan E. Andreassen
  • Patent number: 10570037
    Abstract: Disclosed herein are systems for removing particulate matter from a fluid, comprising a particle functionalized by attachment of at least one activating group or amine functional group, wherein the modified particle complexes with the particulate matter within the fluid to form a removable complex therein. The particulate matter has preferably been contacted, complexed or reacted with a tethering agent. The system is particularly advantageous to removing particulate matter from a tailing solution.
    Type: Grant
    Filed: January 30, 2017
    Date of Patent: February 25, 2020
    Assignee: Soane Mining, LLC
    Inventors: Michael C. Berg, John H. Dise, Kevin T. Petersen, David S. Soane, Kristoffer K. Stokes, William Ware, Jr., Atul C. Thakrar
  • Patent number: 10562799
    Abstract: Disclosed herein are systems for removing particulate matter from a fluid, comprising a particle functionalized by attachment of at least one activating group or amine functional group, wherein the modified particle complexes with the particulate matter within the fluid to form a removable complex therein. The particulate matter has preferably been contacted, complexed or reacted with a tethering agent. The system is particularly advantageous to removing particulate matter from a fluid waste stream following mining or ore processing operations.
    Type: Grant
    Filed: October 20, 2016
    Date of Patent: February 18, 2020
    Assignee: Soane Mining, LLC
    Inventors: David S. Soane, William Ware, Robert P. Mahoney, James Nathan Ashcraft
  • Patent number: 10532942
    Abstract: A process for removing water from particulate material slurries produced by horizontal drilling, vertical drilling and from dredging of bodies of water is disclosed. The process comprises a first step of water removal accomplished by diffusing a chemical reagent into the particulate material source stream that results in separating out a clean water fraction and a second step of reacting the sludge with a demulsifier and a superabsorbent polymer that locks onto the water in the remaining slurry thus turning the slurry into a solid crust. The crust is ground into a particulate form and disposed in a landfill. The combined effect of the treatments is the thickening of the particulate material slurry from about 10% solids to about 25% solids. The removed water may be used for further drilling and drinking. Another benefit is the reduced volume of the particulate material that needs to be disposed in landfills.
    Type: Grant
    Filed: July 15, 2019
    Date of Patent: January 14, 2020
    Inventors: Aicardo Roa-Espinosa, Kim Huong Pham
  • Patent number: 10457584
    Abstract: The invention provides methods and compositions for improving dewatering of mineral slurry. The method comprises adding an R-Succinic Compound (such as octadecenyl succinic acid, hexadecenyl succinic acid, and/or dodecenyl succinic acid) to the slurry. The R-Succinic Compound removes water that would otherwise be trapped within the filtered slurry cake.
    Type: Grant
    Filed: February 9, 2018
    Date of Patent: October 29, 2019
    Assignee: Ecolab USA Inc.
    Inventor: Carl N. Urbani
  • Patent number: 10427950
    Abstract: Methods and compositions for improving performance of flocculants in an industrial production process. Methods include pH triggered cross-linking reaction between a flocculating agent, such as dextran, and a composition comprising a boronic acid-containing polymer. The pH trigger can be provided by a fluid having a pH of 8 or more. The production process can be a Bayer Process and the fluid is caustic liquor or slurry in the fluid circuit of the Bayer, wherein the reaction time is reduced over conventional methods and the cross-linked dextran composition effectuates improved flocculation of the trihydrate particles.
    Type: Grant
    Filed: December 4, 2015
    Date of Patent: October 1, 2019
    Assignee: Ecolab USA Inc.
    Inventors: Jing Wang, Kevin O'Brien, Mingli Wei, Weiguo Cheng, Jinfeng Wang, Kevin McDonald, Xinyu C. Huang
  • Patent number: 10407324
    Abstract: The invention relates to a method for treating an aqueous suspension of solid particles, wherein at least one water-soluble polymer is added to the suspension, and wherein said polymer is obtained by polymerizing at least a non-ionic monomer, optionally at least one anionic and/or at least one cationic monomer, in the presence of a multifunctional free radical transfer agent. This method is particularly useful for the treatment of mineral tailings and especially for tailings resulting from oil sand extraction.
    Type: Grant
    Filed: April 24, 2015
    Date of Patent: September 10, 2019
    Assignee: S.P.C.M. SA
    Inventors: Cédrick Favero, Morgan Tizzotti
  • Patent number: 10322955
    Abstract: Provided are compositions and methods that are useful for clarifying water, reducing turbidity of water, and removing salts from water. The compositions comprise (a) an anionic flocculant comprising at least one of an alkali swellable emulsion (ASE) or hydrophobically-modified alkali swellable emulsion (HASE), and (b) a cationic flocculant comprising (i) an aluminum-containing compound, and (ii) a copolymer of acrylamide and a cationic monomer comprising at least one of a diallyldialkylammonium quaternary compound, acrylamidoalkyltrialkylammonium quaternary compound, methacrylamidoalkyltrialkylammonium quaternary compound, and mixtures thereof.
    Type: Grant
    Filed: August 21, 2015
    Date of Patent: June 18, 2019
    Assignees: Dow Global Technologies LLC, Rohm and Haas Company
    Inventors: Somil Chandrakant Mehta, Mahesh R. Sawant
  • Patent number: 10308517
    Abstract: A method for preparing alkali metal bicarbonate particles by crystallization from an alkali metal carbonate and/or bicarbonate solution with an additive present in the solution, chosen from among sulfates, sulfonates, polysulfonates, amines, hydroxysultaines, polycarboxylates, polysaccharides, polyethers and ether-phenols, alkali metal hexametaphosphate, phosphates, sulfosuccinates, amidosulfonates, amine sulfonates, preferably chosen from among polysaccharides, and such that the additive is present in the solution at a concentration of at least 1 ppm and preferably at most 200 ppm.
    Type: Grant
    Filed: June 26, 2014
    Date of Patent: June 4, 2019
    Assignee: Solvay SA
    Inventor: David Jean Lucien Savary
  • Patent number: 10301414
    Abstract: Disclosed herein are silicon containing polymers and compositions containing the same able to flocculate suspended solids in the Bayer or Sinter process stream.
    Type: Grant
    Filed: December 7, 2015
    Date of Patent: May 28, 2019
    Assignee: Cytec Industries Inc.
    Inventors: Airong Song, Dannon Stigers, Xinyu Wei, Lei Zhang
  • Patent number: 10106443
    Abstract: A composition for treating an aqueous suspension of mineral particles includes at least one water soluble polymer and at least one calcium salt, magnesium salt or both a Calcium salt and a Magnesium salt. The composition is in powder form.
    Type: Grant
    Filed: April 25, 2013
    Date of Patent: October 23, 2018
    Assignee: S.P.C.M. SA
    Inventors: Cedrick Favero, Morgan Tizzotti, Trong Dang-Vu
  • Patent number: 9669340
    Abstract: A system, components of the system and methods for processing, combinations of hydrocarbons, water, solids and contaminants, to separate extract, recover, filter and treat the constituent elements to enable the recovery of valuable hydrocarbons, the treatment of solids for environmentally sustainable discharge, the filtration and treatment of water for reuse, or environmentally sustainable discharge, and the extraction of contaminants. The integrated method and system incorporates alternative processing modes, each of which is optimized for the intake and processing of a materials stream which is predominately solids, or predominately water or predominately hydrocarbons, respectively. The system can dynamically adjust to accommodate variations in the composition of the intake materials stream in any particular mode. The system can be implemented in a portable, modular configuration which is cost effective, energy efficient and scalable to enable processing of any volume of materials.
    Type: Grant
    Filed: July 20, 2011
    Date of Patent: June 6, 2017
    Inventors: Jason Craig Snydmiller, Stuart Allan Snydmiller
  • Patent number: 9648714
    Abstract: A fuel supply for an EUV radiation source is disclosed. The fuel supply comprises a reservoir (40) for retaining a volume of fuel (42), a nozzle (32), in fluid connection with the reservoir, and configured to direct a stream of fuel along a trajectory towards a plasma formation location, and a fuel contamination control arrangement (44) which separates contamination particles from the fuel. The contamination control arrangement comprises at least one acoustic filter. The acoustic filter may apply an acoustic standing wave to the fuel. Also disclosed is a method of controlling contamination in such a fuel supply.
    Type: Grant
    Filed: February 6, 2013
    Date of Patent: May 9, 2017
    Assignee: ASML Netherlands B.V.
    Inventors: Wilbert Jan Mestrom, Gerardus Hubertus Petrus Maria Swinkels
  • Patent number: 9611157
    Abstract: Disclosed are a plant-derived flocculant and a flocculant mixture having a higher flocculation capacity. The plant-derived flocculant comprises at least one of a dried matter of Corchorus olitorius, a dried matter of Begonia fimbristipula, a dried matter of bananas, and a dried matter of Corchorus capsularis; the plant-derived flocculant has a colloid equivalent of ?1.5 mEq/g to ?0.20 mEq/g, and the 2 weight % aqueous solution of the plant-derived flocculant has a viscosity of at least 6.0×10?3 Pa·s (6.0 cP). The flocculant mixture of the invention comprises the plant-derived flocculant described above and a synthetic polymer flocculant having a colloid equivalent of ?4.5 mEq/g to ?1.2 mEq/g, whose 0.2 weight % aqueous solution has a viscosity of 1.3×10?1Pa·s to 4×10?1 Pa·s (130 cP to 400 cP).
    Type: Grant
    Filed: January 6, 2012
    Date of Patent: April 4, 2017
    Assignees: SONY CORPORATION, DEXERIALS CORPORATION
    Inventors: Yasuhito Inagaki, Kohei Shimizu, Masato Hasegawa
  • Patent number: 9567244
    Abstract: In a process for separating a solid material from a suspension of the solid material in water, an organopolysiloxane polyalkylene oxide copolymer comprising a branched organopolysiloxane structure is added to the suspension of solid material in water and the suspension is drained. The organopolysiloxane polyalkylene oxide copolymer comprising a branched organopolysiloxane structure increases the rate of drainage of the suspension.
    Type: Grant
    Filed: August 23, 2012
    Date of Patent: February 14, 2017
    Assignees: DOW CORNING TORAY CO., LTD., DOW CORNING CORPORATION
    Inventors: Tatsuo Souda, Jianren Zeng, Sung-Hsuen Chao, Serge Creutz, Alain Hilberer, Corina Pagnoni, Fabian Rouffiange, Haruhiko Furukawa
  • Patent number: 9518241
    Abstract: A process for cleaning and dewatering hydrophobic particulate materials is presented. The process is performed in two steps: 1) agglomeration of the hydrophobic particles in a first hydrophobic liquid/aqueous mixture; followed by 2) dispersion of the agglomerates in a second hydrophobic liquid to release the water trapped within the agglomerates along with the entrained hydrophilic particles.
    Type: Grant
    Filed: June 11, 2013
    Date of Patent: December 13, 2016
    Assignee: VIRGINIA TECH INTELLECTUAL PROPERTIES, INC.
    Inventor: Roe-Hoan Yoon
  • Patent number: 9370782
    Abstract: The present invention provides a method and an apparatus for separating a mixture that are capable of separating a mixture containing a plurality types of particles, using a countercurrent classification technique, even when there is little difference in density and particle diameter depending on the types of particles. In the present invention, a mixture containing first particles and second particles is separated using a separation tube 13 having the inverted-conical or pyramidal shape or a substantially inverted-conical or pyramidal shape. The first particles and the second particles are made of substances having different magnetic susceptibilities. A fluid is caused to flow upward through the separation tube 13, and the flow of the fluid is used to introduce the mixture into the separation tube 13. The first particles and the second particles are held in the separation tube 13 in a mixed state.
    Type: Grant
    Filed: December 11, 2012
    Date of Patent: June 21, 2016
    Assignees: OSAKA UNIVERSITY, UBE INDUSTRIES, LTD.
    Inventors: Shigehiro Nishijima, Fumihito Mishima, Koji Kaiso, Toshihiro Shimakawa
  • Patent number: 9186771
    Abstract: In a magnetic disk glass substrate manufacturing method, a main surface of a glass substrate is polished using a polishing liquid containing colloidal silica abrasive particles as polishing abrasive particles and a surface plate with a polishing pad, then the glass substrate is brought into contact with a liquid containing a coagulant so that the colloidal silica abrasive particles are coagulated, and then the colloidal silica abrasive particles coagulated are removed.
    Type: Grant
    Filed: March 30, 2012
    Date of Patent: November 17, 2015
    Assignee: HOYA CORPORATION
    Inventors: Hideo Sakai, Yosuke Suzuki, Yoshihiro Tawara
  • Patent number: 8991612
    Abstract: A method obtains non-magnetic ores from a suspension containing ore particle-magnetic particle agglomerates. The method involves dividing ore particle-magnetic particle agglomerates precipitated from the suspension into a mixture of separately present ore particles and magnet particles, separating the magnetic particles from the mixture, forming a first mass flow containing magnetic particles and a second mass flow containing ore particles. At least one information describing a measure of the content of ore particles in the first mass flow and being associated with the first mass flow and/or at least one information describing a measure of the portion of magnetic particles in the second mass flow and being associated with the second mass flow are determined in order to determine the efficiency of at least one of the separation processes described above.
    Type: Grant
    Filed: May 31, 2012
    Date of Patent: March 31, 2015
    Assignee: Siemens Aktiengesellschaft
    Inventors: Michael Diez, Argun Gökpekin, Wolfgang Krieglstein
  • Patent number: 8991615
    Abstract: A method obtains non-magnetic ores from a suspension-like mass flow containing non-magnetic ore particles. The method involves mixing the mass flow with magnetic particles in a mixing device and forming ore particle-magnetic particle agglomerates, feeding the mass flow as a separator feed flow to a magnetic separator for separating the ore particle-magnetic particle agglomerates from the mass flow, forming a separator concentrate flow containing ore particle-magnetic particle agglomerates and a separator residual flow containing the remaining constituents of the mass flow, and separating the ore particles from the ore particle-magnetic particle agglomerates contained in the separator concentrate flow.
    Type: Grant
    Filed: May 31, 2012
    Date of Patent: March 31, 2015
    Assignee: Siemens Aktiengesellschaft
    Inventors: Michael Diez, Argun Gökpekin, Wolfgang Krieglstein
  • Patent number: 8967383
    Abstract: The present disclosure teaches improved processes to produce high-brightness kaolins at high yields from various natural sources of crude kaolin. In some embodiments, a process for treating mined kaolin comprises: blunging kaolin material with water at high shear to form a slurry; introducing the slurry to one or more beneficiation units for flocculation of titania (e.g., anatase) and titania-associated impurities (e.g., iron); introducing a sodium silicate composition, or precursors thereof, to the beneficiation units, wherein the sodium silicate composition is characterized by a Na2O/SiO2 ratio selected from about 0.25 to about 2.5; and recovering a suspension comprising at least 70% of the kaolin clay. The selected sodium silicate composition enhances flocculation of the titania while maintaining dispersion of the kaolin clay in the slurry. One or more chemical leaching reactions generate a treated kaolin that is characterized by a brightness of about 90 or higher.
    Type: Grant
    Filed: October 16, 2013
    Date of Patent: March 3, 2015
    Assignee: KaMin, LLC
    Inventors: Deqiang Ma, Charles Allen Newsome, Aubrey Clay Smith, John Taylor, Richard Douglas Carter
  • Patent number: 8969066
    Abstract: The present invention provides compositions and methods for producing flocculation moieties in photosynthetic organisms. The photosynthetic organisms are genetically modified to effect production, secretion, or both, of the flocculation moieties. Also provided are methods of flocculating organisms.
    Type: Grant
    Filed: June 26, 2009
    Date of Patent: March 3, 2015
    Assignee: Sapphire Energy, Inc.
    Inventors: Michael Mendez, Craig Behnke, Yan Poon, Philip Lee
  • Patent number: 8916049
    Abstract: The processing method for a mixture according to the present invention is a method for processing a mixture having first particles made of a magnetic material or a nonmagnetic material and second particles made of a magnetic material or a nonmagnetic material wherein the second particles are mixed in a fluid medium containing the first particles, and comprises a dispersion step of dispersing aggregates of the first particles and the second particles present in the mixture, and a magnetic separation step of providing the first particles and second particles with a magnetic force a of different magnitudes by applying a magnetic field to the mixture in parallel with or after the dispersion step, thereby separating the first particles and the second particles from each other.
    Type: Grant
    Filed: January 22, 2010
    Date of Patent: December 23, 2014
    Assignees: Osaka University, Ube Industries, Ltd.
    Inventor: Shigehiro Nishijima
  • Patent number: 8863958
    Abstract: An apparatus for separating particles from a medium includes a capillary defining a flow path therein that is in fluid communication with a medium source. The medium source includes engineered acoustic contrast capture particle having a predetermined acoustic contrast. The apparatus includes a vibration generator that is operable to produce at least one acoustic field within the flow path. The acoustic field produces a force potential minima for positive acoustic contrast particles and a force potential minima for negative acoustic contrast particles in the flow path and drives the engineered acoustic contrast capture particles to either the force potential minima for positive acoustic contrast particles or the force potential minima for negative acoustic contrast particles.
    Type: Grant
    Filed: November 14, 2011
    Date of Patent: October 21, 2014
    Assignee: Los Alamos National Security, LLC
    Inventors: Gregory Kaduchak, Michael D. Ward
  • Patent number: 8858801
    Abstract: 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: Grant
    Filed: February 22, 2010
    Date of Patent: October 14, 2014
    Assignees: BASF SE, Siemens Aktiengesellschaft
    Inventors: Imme Domke, Alexej Michailovski, Norbert Mronga
  • Patent number: 8852660
    Abstract: Compositions of reducing agents and carriers for producing a stable negative oxidation reduction potential in consumable materials are disclosed and claimed. Compositions of the invention find use in enhancing the hydration and anti-oxidant value of consumable materials such as foods, beverages and cosmetics, for example. Compositions of the invention also find use in water treatment, agricultural and scientific research applications. Methods for using and making the compositions are also within the scope of the invention.
    Type: Grant
    Filed: May 28, 2010
    Date of Patent: October 7, 2014
    Inventor: Dusan Miljkovic
  • Patent number: 8828242
    Abstract: A system for dewatering a stream of slurry has a first and a second separator. The first separator removes objects above a first size, to produce a stream of primary treated slurry. The second separator removes objects above a second size from the primary treated stream, the second size being smaller than the first size. Optionally, a third separator removes objects above a yet smaller third size from the stream of secondary treated slurry. The first separator has a plurality of sieve mat supports alternately connected to a main support frame section and a movable support frame section so that the flexible sieve mat can be agitated by the movable support frame section, a collector being provided for collecting the primary treated slurry passing through the flexible sieve mat. In an optional step, water contained in the separated solids is removed.
    Type: Grant
    Filed: November 9, 2012
    Date of Patent: September 9, 2014
    Assignee: Genesis Fluid Solutions, Ltd
    Inventors: Michael K. Hodges, Larry D. Campbell
  • Publication number: 20140124414
    Abstract: A method obtains non-magnetic ores from a suspension-like mass flow containing non-magnetic ore particles. The method involves mixing the mass flow with magnetic particles in a mixing device and forming ore particle-magnetic particle agglomerates, feeding the mass flow as a separator feed flow to a magnetic separator for separating the ore particle-magnetic particle agglomerates from the mass flow, forming a separator concentrate flow containing ore particle-magnetic particle agglomerates and a separator residual flow containing the remaining constituents of the mass flow, and separating the ore particles from the ore particle-magnetic particle agglomerates contained in the separator concentrate flow.
    Type: Application
    Filed: May 31, 2012
    Publication date: May 8, 2014
    Applicant: SIEMENS AKTIENGESELLSCHAFT
    Inventors: Michael Diez, Argun Gökpekin, Wolfgang Krieglstein
  • Publication number: 20140124415
    Abstract: A method obtains non-magnetic ores from a suspension containing ore particle-magnetic particle agglomerates. The method involves dividing ore particle-magnetic particle agglomerates precipitated from the suspension into a mixture of separately present ore particles and magnet particles, separating the magnetic particles from the mixture, forming a first mass flow containing magnetic particles and a second mass flow containing ore particles. At least one information describing a measure of the content of ore particles in the first mass flow and being associated with the first mass flow and/or at least one information describing a measure of the portion of magnetic particles in the second mass flow and being associated with the second mass flow are determined in order to determine the efficiency of at least one of the separation processes described above.
    Type: Application
    Filed: May 31, 2012
    Publication date: May 8, 2014
    Applicant: SIEMENS AKTIENGESELLSCHAFT
    Inventors: Michael Diez, Argun Gökpekin, Wolfgang Krieglstein
  • Patent number: 8678200
    Abstract: A system for dewatering a stream of slurry has a first and a second separator. The first separator removes objects above a first size, to produce a stream of primary treated slurry. The second separator removes objects above a second size from the primary treated stream, the second size being smaller than the first size. Optionally, a third separator removes objects above a yet smaller third size from the stream of secondary treated slurry. The first separator has a plurality of sieve mat supports alternately connected to a main support frame section and a movable support frame section so that the flexible sieve mat can be agitated by the movable support frame section, a collector being provided for collecting the primary treated slurry passing through the flexible sieve mat. In an optional step, water contained in the separated solids is removed.
    Type: Grant
    Filed: February 20, 2007
    Date of Patent: March 25, 2014
    Assignee: Genesis Fluid Solutions, Ltd
    Inventors: Michael Kent Hodges, Larry D. Campbell
  • Publication number: 20130341250
    Abstract: A method, process or system for producing an iron oxide concentrate from a treatment slurry of a low grade mineral assemblage includes mixing a flocculant with the treatment slurry and dewatering the treatment slurry before passing the treatment slurry through a wet high intensity magnetic separator of a type that employs a flux amplifying matrix (i.e., a WHIMS-FAM device) and recovering an iron oxide concentrate fraction and a tailings fraction from the WHIMS-FAM device. Another method, process or system for producing an iron oxide concentrate includes passing the treatment slurry through a WHIMS-FAM device and recovering an iron oxide concentrate fraction slurry and a tailings fraction slurry from the WHIMS-FAM device; mixing a flocculant with the concentrate fraction slurry and dewatering the concentrate slurry to provide a thickened concentrate slurry before filtering the thickened concentrate slurry to provide a concentrate filter cake.
    Type: Application
    Filed: June 20, 2013
    Publication date: December 26, 2013
    Inventor: Larry J. Lehtinen
  • Patent number: 8545787
    Abstract: A method of treating a kaolin particulate material to improve one or more of its properties by removal of impurity particles therein which includes: producing a dispersed aqueous suspension of a kaolin particulate material containing at least 0.1% by weight, based on the dry weight of the kaolin particulate material of separable particulate impurity; diluting said dispersed aqueous suspension by adding a diluent thereto; adding a selective flocculation polymer to the diluted suspension; allowing the suspension containing the polymer to separate in a selective flocculation separator into layers comprising a flocculated product layer and a deflocculated impurity layer containing the separable impurity; and extracting the separated layers from the separator, wherein at least a portion of said deflocculated impurity layer is recirculated for use as at least a portion of the aforementioned diluent.
    Type: Grant
    Filed: February 7, 2007
    Date of Patent: October 1, 2013
    Assignee: Imerys Pigments, Inc.
    Inventors: Robert J. Pruett, Jim Richardson, William Limousin, Ismail Yildirim, Jun Yuan
  • Patent number: 8506822
    Abstract: A process of concentrating an aqueous suspension of solid particles comprising the steps of adding at least one organic polymeric flocculant to the suspension thereby forming flocculated solids in which the flocculated solids are allowed form a layer of solids and thereby forming a more concentrated suspension in which the process comprises the addition of an effective amount of an agent that is selected from the group consisting of free radical agents, oxidizing agents, enzymes and radiation, in which the agent is applied to the suspension prior to or substantially simultaneously with adding the organic polymeric flocculant and/or the organic polymeric flocculant is added to the suspension in a vessel and the agent is applied to the suspension in the same vessel. The process is particularly suitable for solids liquid separation in which the flocculated solids are allowed to settle by sedimentation in a gravity thickener.
    Type: Grant
    Filed: December 8, 2011
    Date of Patent: August 13, 2013
    Assignee: BASF SE
    Inventors: Gillian Moody, Anthony Allen, Stephen Adkins, Brian Dymond, Paul Stocks
  • Patent number: 8486274
    Abstract: The present invention relates to methods for the separation of materials from heterogeneous fluids and provides a means of effecting stimulant-sensitive flocculation and consolidation of solid suspensions within a liquid medium. Specifically, the present invention provides a method of controlling the state of a suspension of solid particles in a liquid, including applying to the suspension a stimulus adapted to control inter-particle forces between the solid particles. The stimulus is reversibly operable to control attraction and/or repulsion. Means of consolidating a sediment bed and of separating the resultant liquids-rich and solids-rich phases are also within the ambit of the invention.
    Type: Grant
    Filed: August 27, 2004
    Date of Patent: July 16, 2013
    Assignee: Newcastle Innovation Limited
    Inventors: George V. Franks, Graeme John Jameson, Yao-de Yan, Simon Richard Biggs
  • Patent number: 8486270
    Abstract: 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: Grant
    Filed: November 10, 2010
    Date of Patent: July 16, 2013
    Assignees: BASF SE, Siemens Aktiengesellschaft
    Inventors: Reinhold Rieger, Alexej Michailovski, Imme Domke
  • Patent number: 8475662
    Abstract: 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: Grant
    Filed: November 22, 2010
    Date of Patent: July 2, 2013
    Assignees: BASF SE, BASF Corporation, Siemens Aktiengesellschaft
    Inventors: Imme Domke, Reinhold Rieger, Alexej Michailovski, Christian Bittner
  • Patent number: 8377313
    Abstract: 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: Grant
    Filed: March 3, 2010
    Date of Patent: February 19, 2013
    Assignees: BASF SE, Siemens Aktiengesellschaft
    Inventors: Imme Domke, Hartmut Hibst, Alexej Michailovski, Norbert Mronga, Werner Hartmann, Wolfgang Krieglstein, Vladimir Danov
  • Patent number: 8377312
    Abstract: 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: Grant
    Filed: December 9, 2009
    Date of Patent: February 19, 2013
    Assignees: BASF SE, Siemens AG
    Inventors: Imme Domke, Alexej Michailovski, Norbert Mronga
  • Patent number: 8377311
    Abstract: 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: Grant
    Filed: July 15, 2009
    Date of Patent: February 19, 2013
    Assignees: BASF SE, Seimens AG
    Inventors: Imme Domke, Alexej Michailovski, Norbert Mronga, Hartmut Hibst, Juergen Tropsch, Susanne Stutz
  • Patent number: 8372290
    Abstract: 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 th
    Type: Grant
    Filed: March 3, 2010
    Date of Patent: February 12, 2013
    Assignees: BASF SE, Siemens Aktiengesellschaft
    Inventors: Imme Domke, Alexej Michailovski, Norbert Mronga, Werner Hartmann, Wolfgang Krieglstein, Vladimir Danov
  • Patent number: 8342336
    Abstract: 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: Grant
    Filed: February 10, 2009
    Date of Patent: January 1, 2013
    Assignee: Siemens Aktiengesellschaft
    Inventors: Michael Diez, Imme Domke, Werner Hartmann, Hartmut Hibst, Wolfgang Krieglstein, Alexej Michailovski, Norbert Mronga, Michael Riebensahm, Wolfgang Schmidt, Thomas Servay
  • Patent number: 8329039
    Abstract: 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: Grant
    Filed: November 17, 2008
    Date of Patent: December 11, 2012
    Assignee: BASF SE
    Inventors: Imme Domke, Alexej Michailovski, Norbert Mronga, Hartmut Hibst
  • Patent number: 8318025
    Abstract: 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 of
    Type: Grant
    Filed: September 1, 2008
    Date of Patent: November 27, 2012
    Assignee: BASF SE
    Inventors: Imme Domke, Norbert Mronga, Alexej Michailovski, Hartmut Hibst, Thomas Servay, Rainer Klopsch
  • Patent number: 8234813
    Abstract: Systems and methods for hydroponically growing microorganisms within a self-contained air-supported structure, in which microorganisms are grown in an organic slurry, harvested, and processed to obtain and process and distribute molecules useful for biofuel or other purposes.
    Type: Grant
    Filed: April 17, 2009
    Date of Patent: August 7, 2012
    Assignee: Algepower LLC
    Inventors: Gail Busch, Jacques M. Dupont
  • Patent number: 8225935
    Abstract: A method and a device for recovering clay derived from a contaminated raw material containing clay. The method includes eliminating from the contaminated material contaminating materials not bound to the clay, mixing the contaminated raw material, free of unbound contaminating materials, with water, separating from the mixture clay suspended in water and residues of raw material depleted in clay, and separately recovering clay and water.
    Type: Grant
    Filed: June 13, 2006
    Date of Patent: July 24, 2012
    Inventor: Albert Fontaine