Patents Examined by Thomas M. Lithgow
  • Patent number: 11180388
    Abstract: A method for treating wastewater involves electrolyzing a stream of seawater and wastewater mix within one or more electrolytic cells mounted outside a batch tank. The electrolyzed stream is piped to a quelling chamber which is mounted above the batch tank. A diluted polymer solution is injected at upstream of an in-line mixer piping into the quelling chamber substantially concurrently with the electrolyzed stream. The polymer solution and the electrolyzed stream are dispersed as a fine shower over residual seawater and wastewater in the batch tank. The polymer solution facilitates flocculation of the suspended solid particles and creates a distinct buoyant layer of flocculated solid particles attached with micro bubbles. A substantially clarified effluent is separated from the flocculated layer and neutralized prior to discharge. The flocculated layer is pumped from the batch tank to a dewatering system where entrained solids are compacted to a desired level.
    Type: Grant
    Filed: October 31, 2017
    Date of Patent: November 23, 2021
    Assignee: INDUSTRIE DE NORA S.P.A.
    Inventors: Dana Casbeer, Rubin Bariya, Sehul Patel, Rudolf Matousek, Thomas Reeves
  • Patent number: 11168218
    Abstract: A process is described for manufacturing white pigment containing products. The white pigment containing products are obtained from at least one white pigment and impurities containing material via froth flotation.
    Type: Grant
    Filed: February 13, 2017
    Date of Patent: November 9, 2021
    Assignee: OMYA INTERNATIONAL AG
    Inventors: Jörg Sötemann, Jörg Andreas Maier
  • Patent number: 11161064
    Abstract: A removal system is provided with a separating element for separating contaminants contained in a fluid and with a removal aid for removing the separating element from a housing. The separating element has an end disk arranged at an end face of the separating element. The end disk has a central recess. The removal aid has a grip section and at least two locking fingers. The locking fingers extend along a center axis of the removal aid away from the grip section. Each locking finger has a hook element that serves for engaging behind the end disk of the separating element radially outside of an end disk area that delimits in radial outward direction immediately the central recess. A removal aid for such a removal system is provided.
    Type: Grant
    Filed: June 28, 2017
    Date of Patent: November 2, 2021
    Assignee: MANN+HUMMEL GmbH
    Inventors: Andreas Wildermuth, Frank Pflueger, Guenter Jokschas
  • Patent number: 11135597
    Abstract: A synthetic bead for use in mineral separation is described. The synthetic bead has a surface made of a synthetic material such as polymer and the synthetic material is functionalized with molecules having a functional group for attaching mineral particles to the surface in a separation process. The synthetic beads can be placed in flotation cell containing a mixture of water, valuable material and unwanted material or in a pipeline where the mixture is transported from one location to another. The enriched synthetic beads carrying the mineral particles are separated from the unwanted materials in the mixture. The mineral particles are then released from the synthetic beads by means of low pH treatment, ultrasonic agitation, thermal or electromagnetic treatment.
    Type: Grant
    Filed: April 12, 2018
    Date of Patent: October 5, 2021
    Assignee: CIDRA CORPORATE SERVICES LLC
    Inventors: Paul J. Rothman, Mark R. Fernald, Francis K. Didden, Christian V. O'Keefe, Douglas H. Adamson
  • Patent number: 11117141
    Abstract: Apparatus for use in, or forming part of, a separation process to be implemented in separation processor technology, the apparatus comprising synthetic bubbles or beads configured with a polymer or polymer-based material functionalized to attach to a valuable material in a mixture so as to form an enriched synthetic bubbles or beads having the valuable material attached thereto, and also configured to be separated from the mixture based at least partly on a difference in a physical property between the enriched synthetic bubbles or beads having the valuable material attached thereto and the mixture.
    Type: Grant
    Filed: October 26, 2017
    Date of Patent: September 14, 2021
    Assignee: CIDRA CORPORATE SERVICES INC.
    Inventors: Paul J. Rothman, Mark R. Fernald, Francis K. Didden, Christian V. O'Keefe, Alan D. Kersey, Douglas H. Adamson
  • Patent number: 11103882
    Abstract: A separation system is presented that partitions a slurry containing a plurality of particles that are influenced by a fluidization flow (which comprises teeter water and gas bubbles) and a fluidized bed. The separation system comprises a separation tank, a slurry feed distributor, a fluidization flow manifold and a gas introduction system. All of these components are arranged to create the fluidized bed in the separation tank by introducing the slurry through the slurry feed distributor and allowing the slurry to interact with the fluidization flow that enters the separation tank from the fluidization flow manifold. The gas introduction system is configured to optimize the gas bubble size distribution in the fluidization flow. The gas introduction system comprises a gas introduction conduit and a bypass conduit. The gas introduction system can be adjusted by modulating the flow of teeter water through the gas introduction conduit.
    Type: Grant
    Filed: January 27, 2016
    Date of Patent: August 31, 2021
    Assignee: Eriez Manufacturing Co.
    Inventors: Michael J. Mankosa, Jaisen N. Kohmuench, Eric S. Yan
  • Patent number: 11084737
    Abstract: A wastewater purification system that uses mechanical and chemical processes to separate contaminants from municipal and other sanitary wastewater, concentrates the resulting sludge for disposal, and purifies the resulting product water for reuse as irrigation water, potable water or for disposal. The wastewater purification system can be scaled from a mobile system mounted on a skid or a tracker trailer to a large municipal wastewater treatment system. The wastewater purification system can include a hydrocyclone feeding a flotation tank. Flocculant is added upstream from the hydrocyclone after air injection by a Venturi air injector or similar device. Coagulant is added before the air injection. A dose of flocculant is added after the hydrocyclone within the vortex of the hydrocyclone and before the wastewater exits near the top of the flotation tank.
    Type: Grant
    Filed: May 16, 2021
    Date of Patent: August 10, 2021
    Assignee: Eco World Water Corp.
    Inventors: Santiago Contreras, Scott Worley, Paul L Culler
  • Patent number: 11060165
    Abstract: A copper/molybdenum separation system uses sea water in the roughing circuit and desalinated water in cleaning circuit. In both roughing circuit and cleaning circuit, hydrophobic engineered media are used to recover the mineral particles of interest. The cleaning circuit includes a molybdenum loading stage configured to contact the conditioned pulp with the engineered media in an agitated reaction chamber, and load the hydrophobic molybdenite on the engineered media.
    Type: Grant
    Filed: October 4, 2017
    Date of Patent: July 13, 2021
    Assignee: CIDRA CORPORATE SERVICES, INC.
    Inventors: Mark A. Fernald, Paul J. Rothman, Peter A. Amelunxen
  • Patent number: 11033909
    Abstract: A froth flotation arrangement and method for treating mineral ore particles suspended in slurry includes a flotation cell for separating the slurry into an underflow and an overflow and a primary line including at least three flotation cells connected in series, wherein each subsequent flotation cell is arranged to receive the underflow from the previous flotation cell, the flotation cell includes a tank and an impeller within the tank, and the flotation cell includes a gas supply within the tank, the tank includes a volume of at least 200 m3, the flotation cell including a froth collection launder capable to receive the overflow the froth collection launder including a froth overflow lip, the flotation cell having an available froth surface area (A froth), the flotation cell having a pulp area (A pulp), where the pulp area (A pulp) is calculated as an average from the cross sectional areas of the tank at the height (h1) of the impeller.
    Type: Grant
    Filed: July 4, 2017
    Date of Patent: June 15, 2021
    Assignee: OUTOTEC (FINLAND) OY
    Inventors: Alejandro Yanez, Rodrigo Grau
  • Patent number: 11014096
    Abstract: The present invention concerns a process for manufacturing white pigment containing products. The white pigment containing products are obtained from at least one white pigment and impurities containing material via froth flotation.
    Type: Grant
    Filed: August 8, 2018
    Date of Patent: May 25, 2021
    Assignee: OMYA INTERNATIONAL AG
    Inventors: Jorg Sotemann, Jorg Maier, David Gilbert, Tomi Matti Juhani Niitti
  • Patent number: 11014097
    Abstract: Improved sparge compositions for froth flotation separation, methods of using them, and uses thereof are described. The compositions are suitably used in the froth flotation of particulate material containing ultrafine particles, and are well suited to the froth flotation separation of finely comminuted poor (low-grade) ores. The sparge compositions comprise functionalized silicone containing functionality that is tailored to the chemical nature of a beneficiary or a gangue in the ore. Sparging of the compositions effects improved recoveries and purities of beneficiaries. Sparge compositions and functionalized silicones suitable for the froth flotation of iron ores containing silica and/or silicate impurities are described. Sparge compositions and functionalized silicones suitable for the froth flotation of ores containing sulfur compounds such as sulfides are also disclosed.
    Type: Grant
    Filed: December 13, 2017
    Date of Patent: May 25, 2021
    Assignee: Ecolab USA Inc.
    Inventors: Jianjun Liu, Daniel Hay, Jaqueline Herrera, Kevin O'Brien, Eric Bauch, Glenda Vale
  • Patent number: 11008227
    Abstract: A wastewater purification system that uses mechanical and chemical processes to separate contaminants from municipal and other sanitary wastewater, concentrates the resulting sludge for disposal, and purifies the resulting product water for reuse as irrigation water, potable water or for disposal. The wastewater purification system can be scaled from a mobile system mounted on a skid or a tracker trailer to a large municipal wastewater treatment system. The wastewater purification system can include a hydrocyclone feeding a flotation tank. Flocculant is added upstream from the hydrocyclone after air injection by a Venturi air injector or similar device. Coagulant is added before the air injection. A dose of flocculant is added after the hydrocyclone within the vortex of the hydrocyclone and before the wastewater exits near the top of the flotation tank.
    Type: Grant
    Filed: July 29, 2019
    Date of Patent: May 18, 2021
    Assignee: Eco Water Technologies Corp
    Inventors: Scott Worley, Santiago Contreras, Paul L Culler
  • Patent number: 11007538
    Abstract: Methods of enhancing recovery of value sulfide and/or precious metal-bearing minerals from an ore containing such minerals as well as Mg-silicate, slime forming minerals, and/or clay by adding a froth phase modifier agent to the ore, and subjecting the ore to a froth flotation process performed under acidic conditions, are provided herein.
    Type: Grant
    Filed: May 26, 2016
    Date of Patent: May 18, 2021
    Assignee: Cytec Technology Corp.
    Inventors: Devarayasamudram Ramachandran Nagaraj, Tarun Bhambhani, Mukund Vasudevan, Puspendu Deo, Haunn-Lin Tony Chen
  • Patent number: 11000790
    Abstract: A detachable wear strip for an endless seal belt of a vacuum belt filter device is configured to be arranged in a first groove of a guide part between the endless seal belt and the guide part, wherein the endless seal belt is configured to run in the first groove in contact with a low pressure side of an endless moving filter belt of the vacuum belt filter device, wherein the guide part being arranged between a vacuum box of a vacuum arrangement and the low pressure side, and wherein by the vacuum arrangement being configured to produce a suction at a low pressure side of the endless moving filter belt at a working zone of the vacuum belt filter device.
    Type: Grant
    Filed: March 23, 2016
    Date of Patent: May 11, 2021
    Assignee: OUTOTEC (FINLAND) OY
    Inventors: Harri Mikkola, Pekka Suihkonen, Matti Luoma
  • Patent number: 10974257
    Abstract: A flotation tank has an input to receive a slurry from a pipeline section. The slurry contains finer mineral particles and coarser mineral particles. The pipeline section has one or more loops or coiled sections arranged to perform partial centrifugal separation on the finer and coarser mineral particles. As the mineral particles are moved tangentially into the lower part of the flotation tank, the coarser mineral particles tend to be near the tank wall while the finer mineral particles tend to move into the central part of the tank. Air bubbles or lightweight synthetic bubbles are used to collect and lift the finer mineral particles to the upper part of the tank. The coarser mineral particles are recovered by using collection surfaces coated with a hydrophobic material.
    Type: Grant
    Filed: October 4, 2017
    Date of Patent: April 13, 2021
    Assignee: CiDRA Corporate Services LLC
    Inventor: Alan D. Kersey
  • Patent number: 10961382
    Abstract: Improved sparge compositions for reverse froth flotation separation and uses thereof, and methods of reverse froth flotation are described. The sparge compositions comprise sulfonated polymeric modifiers which can act as dispersants and depressants, and the compositions are suitably used in the reverse froth flotation of particulate material containing ultrafine particles. For example, the compositions and methods can be used in the separation of iron oxide beneficiary from iron ores comprising silica, silicates, and the like.
    Type: Grant
    Filed: August 25, 2017
    Date of Patent: March 30, 2021
    Assignee: Ecolab USA Inc.
    Inventors: Jianjun Liu, Kevin O'Brien, Daniel N. T. Hay
  • Patent number: 10947142
    Abstract: Implementations of the present disclosure relate to an apparatus and a method for reducing a selenium-content of a fluid-input stream. The present disclosure includes components and steps for performing chemical modifications of a fluid-input stream and further components and steps for performing physical modifications of a chemically-manipulated fluid stream. When the fluid-input stream has a selenium content the chemical modification of the fluid-input stream drives at least a portion of the selenium content into a selenium-containing solids phase. The chemical modifications include at least oxidation, coagulation, chelation and flocculation. The present disclosure also includes components and steps for performing physical modifications that separate and remove some or all of the selenium-containing solids phase from the liquid phase, which reduces the selenium content of the liquid phase.
    Type: Grant
    Filed: September 1, 2017
    Date of Patent: March 16, 2021
    Assignee: Suncor Energy Inc.
    Inventor: Brian Keith Lilly
  • Patent number: 10934191
    Abstract: Methods of making various capillary foams are provided. The foams can include liquid foams having a plurality of particles connected by a network of a secondary fluid at the interface between the discontinuous and continuous phase. The foams can also include solid foams where the continuous phases (bulk fluid) is removed to produce the solid foam having high overall porosities and low densities. Densities as low as 0.3 g cm?3 and porosities as high as 95% or higher can be achieved. The secondary fluid can be polymerized to further strengthen the solid foam. Methods and devices are also provided for oil recovery from water using a capillary foam. The methods can include forming a capillary foam wherein the oil is the secondary fluid, and wherein the foam can transport the oil to the surface of the water.
    Type: Grant
    Filed: September 6, 2016
    Date of Patent: March 2, 2021
    Assignee: Georgia Tech Research Corporation
    Inventors: Sven Holger Behrens, James Carson Meredith, III, Jie Wu, Yi Zhang
  • Patent number: 10927248
    Abstract: Improved sparge compositions for reverse froth flotation separation and uses thereof, and methods of reverse froth flotation are described. The sparge compositions comprise sulfonated polymeric modifiers which can act as dispersants and depressants, and the compositions are suitably used in the reverse froth flotation of particulate material containing ultrafine particles. For example, the compositions and methods can be used in the separation of phosphate beneficiary from ores comprising phosphates, dolomite, calcite, clay, silica, silicates, carbonates, and mixtures thereof.
    Type: Grant
    Filed: August 25, 2017
    Date of Patent: February 23, 2021
    Assignee: Ecolab USA Inc.
    Inventors: Jianjun Liu, Kevin O'Brien, Paul Wiatr, Daniel N.T. Hay
  • Patent number: 10926205
    Abstract: A filter assembly has a one-piece cast metal pressure vessel with an inlet port communicating only with an inlet chamber and an integral offset bulkhead forming a separate filtrate chamber on the opposite side of the bulkhead having an upper exit port and lower exit port on opposite sides of the filtrate chamber. A filter assembly is disposed through an aperture in the bulkhead with the filter inlet side communicating only with the inlet chamber and the filter outlet side communicating only with the filtrate chamber. An access opening is provided in the top of the pressure vessel with a lid for changing filters. A closure member attached over the lower exit port configures the assembly for simplex operation. Relocating the closure member to cover the upper exit port on a pair of the pressure vessels with filters therein readily configures the pair for attachment to opposite sides of a central diverter valve for duplex filtering operation without rework of either of the pair of pressure vessels.
    Type: Grant
    Filed: June 20, 2017
    Date of Patent: February 23, 2021
    Assignee: EATON INTELLIGENT POWER LIMITED
    Inventors: Kumar Chandrakant Thorat, Mark A. Levis