Solid Patents (Class 406/49)
  • Patent number: 9511955
    Abstract: A method of transporting solid particulates in an aqueous suspension of the solid particulates, comprising dispersing solid particulates in an aqueous liquid in the presence of at least one mineral suspending agent, wherein solid particulates are transported a distance greater than or equal to 200 m.
    Type: Grant
    Filed: October 31, 2012
    Date of Patent: December 6, 2016
    Assignee: ACTIVE MINERALS INTERNATIONAL, LLC
    Inventors: Robert J. Purcell, Jr., Dennis C. Parker, Matthew J. Lyman, James M. Smith
  • Publication number: 20150023742
    Abstract: A device for feeding granulate and filler material to an extruder screw of an extruder, includes a cyclone with an inlet opening for introducing a delivery flow of pneumatically delivered filler material and an outlet opening for discharging the filler material which has been separated from the delivery flow, a feed funnel for the fresh granulate and a mixing section, to which the separated filler material and the fresh granulate are fed from the feed funnel. The cyclone is disposed at least partially in the feed funnel and coaxial with the latter, so that the outlet opening of the cyclone extends into a feed funnel outlet region which surrounds the outlet opening in an annular manner, wherein a stuffing screw passes axially through the outlet opening of the cyclone and protrudes at least partially into the mixing section which axially adjoins the outlet opening.
    Type: Application
    Filed: February 19, 2013
    Publication date: January 22, 2015
    Inventor: Peter Schmalholz
  • Publication number: 20120294769
    Abstract: An exemplary embodiment of the present invention provides an induced-draft injection system comprising an injection line in fluid communication with a duct under negative pressure, a particulate storage containing particulate, and a feeder receiving the particulate from the particulate storage and feeding the particulate to the injection line. The negative pressure in the duct supports the transportation of at least a portion of the particulate through the injection line and into the duct. Inside the duct, a binding portion of the particulate is bound to a portion of mercury in a flue gas passing through the duct, thus enabling a portion of the mercury to be filtered out of the flue gas.
    Type: Application
    Filed: May 17, 2012
    Publication date: November 22, 2012
    Applicant: SOUTHERN COMPANY
    Inventor: LUKE REAGAN
  • Patent number: 8052354
    Abstract: The invention relates to a method and a device (1) to prevent contamination on a wall inner side (53, 54, 55, 56, 67) of a transport device (10) for fibers (60) which are designated for the production of fiberboards and which after wetting with glue in a dry-gluing unit (2) are transported by the transport device to a further processing unit (13) by means of transport air. By returning dried material (50), which has been acquired during the course of further processing of the glued fibers and no longer has any cold-sticky glue, into the flow (7) of fibers (60), which still comprise cold-sticky glue, in the transport device, the said contamination is prevented in an effective and inexpensive manner.
    Type: Grant
    Filed: November 2, 2005
    Date of Patent: November 8, 2011
    Assignee: Dieffenbacher GmbH Maschinen-und Anlagenbau
    Inventor: Fritz Schneider
  • Patent number: 7972089
    Abstract: Disclosed is a system of displacing a plurality of parts to be stocked and distributed, each part defining a first end and a second end. The system comprises a conduit, the conduit defining an interior to house an actuation fluid, an axis of displacement in the interior, and an interior surface; and a plurality of devices. Each device includes a periphery configured to contact the interior surface of the conduit and to move along the interior surface, a device first surface approximately perpendicular to the axis of displacement, the device first surface being subject to a pressure of the actuation fluid thereby subjecting the device to displacement in the conduit, a first device-end shaped to receive the first end of a corresponding first part in the plurality of parts, and a second device-end shaped to receive the second end of a corresponding second part in the plurality of parts.
    Type: Grant
    Filed: May 27, 2005
    Date of Patent: July 5, 2011
    Assignee: F2 C2 System
    Inventors: Jean-Marc Auriol, Philippe Bornes
  • Publication number: 20100124464
    Abstract: A valve for controlling a flow of granular material and fluid comprises a body having a first end, a second end, and defining an interior surface. An inlet is formed proximate the first end for receiving the granular material and fluid. An outlet is formed downstream of the inlet for selectively discharging the granular material and fluid. A first member is slideably captured within the body and a resilient member is operationally coupled to the first member. The first member is moveable between an open position at which the granular material and fluid flow through the outlet, and a closed position upstream of the outlet at which the granular material is substantially prevented from flowing through the outlet. The resilient member is moveable between a retracted position and an expanded position at which it is engaged with the interior surface to substantially prevent the fluid from flowing through the outlet.
    Type: Application
    Filed: November 14, 2008
    Publication date: May 20, 2010
    Inventor: RUSSELL JAMES MEMORY
  • Patent number: 7347649
    Abstract: To supply a powder lacquer sprayer, the coating powder is pressed by a pig through the supply line and, in the process, it is fluidized from the side of the pig which is turned toward the powder. The fluidization air can be led to the powder, for example, by a central passage opening of the pig or through an air permeable wall of the connection line. For the dosage of the coating powder, one uses the push medium which drives the pig.
    Type: Grant
    Filed: July 11, 2003
    Date of Patent: March 25, 2008
    Assignee: Durr Systems, Inc.
    Inventors: Thomas Duerr, Hans-Georg Fritz, Joachim Hering
  • Patent number: 5258137
    Abstract: A foam-fluid composition for use in foam fracture applications and foam slurry transport comprises a thickening amount of a viscoelastic surfactant composition, a functionally effective amount of a surfactant composition capable of forming a foam, and an aqueous liquid. Foam-fluid formulations are easily prepared, reusable, shear stable, easily pumped and form stable foams over a wide temperature range and exhibit high viscosities even at relatively high temperatures.
    Type: Grant
    Filed: March 9, 1992
    Date of Patent: November 2, 1993
    Assignee: The Dow Chemical Company
    Inventors: Jeffrey E. Bonekamp, Gene D. Rose, Donald L. Schmidt, Arthur S. Teot, Edward K. Watkins
  • Patent number: 5169267
    Abstract: Lump coal is able to be pumped through a pipeline by suspending it in a slurry which is composed of water, fine coal and finely-divided magnetite. At the terminal end of the pipeline, the lump coal is separated from the slurry, which is pumped back for re-use through a return pipeline.
    Type: Grant
    Filed: November 4, 1991
    Date of Patent: December 8, 1992
    Inventor: Norman T. Cowper
  • Patent number: 5080534
    Abstract: A solid material, such as sand, mineral tailings, aggregate, or sludge is selected and treated to wet the surface of the material. A low moisture content foam is generated by passing a gas through a mixture of water and a surfactant, wherein the foam has a foam weight in the range from 15-50 gm/l. The solid material then is mixed with a quantity of the foam from 2-80% by resulting volume, sufficient to create of a foam-based slurry product having plug flow characteristics when pumped through a pipeline. The mixing can be accomplished by batch process or continuous flow processes. The slurry product is pumped through a pipeline and is regenerated as required within the pipeline by injecting additional foam into the slurry product while, substantially at the same time, mixing the slurry product with the additional foam by passing it over a mixing foil, which is especially effective in a bend of the pipe.
    Type: Grant
    Filed: April 23, 1990
    Date of Patent: January 14, 1992
    Assignee: Goodson & Associates
    Inventors: Russell Goodson, Gary J. Colaizzi, Brian Masloff
  • Patent number: 5056962
    Abstract: A method and the related system for sampling solid materials. Materials as continuously manufactured from a compression molding machine are sampled at fixed intervals and the materials thus sampled are fed into a transport pipe so as to be transferred by being accompanied by a transport plug into an inspecting station at low speed from its stand-by position in the pipe when a gas control means is set in a feed mode. After transferring sampled materials the transport plug left at its terminal position in the transport pipe is automatically returned to the stand-by position through the transport pipe when the gas control means is set in a suction mode. By executing the above steps repeatedly, sampled materials are successively transferred into the inspecting station by being accompanied by the transport plug under unmanned operation.
    Type: Grant
    Filed: December 27, 1989
    Date of Patent: October 15, 1991
    Assignee: Kyowa Hakko Kogyo Co., Ltd. Kabushiki Kaisha Matsui Seisakusho
    Inventors: Kiyoshi Morimoto, Akikazu Iwamoto, Katsuya Watanabe, Masahiko Shimizu, Masuo Moriyama
  • Patent number: 4993884
    Abstract: Method of applying a layer of air-sprayed concrete onto a surface, wherein a pumpable and sprayable mixture of air-sprayable concrete is prepared from cement, aggregates, optional additives, and water. A given mass flow of the mixture of air-spray concrete is sprayed by means of a concrete feed pump through a concrete feed line to a spraying apparatus with a device for the introduction of propelling air under a feed pressure of several bars. The propelling air is charged with synthetic silica exhibiting a BET surface of at least 25 m.sup.2 /g. The synthetic silica is added with the propelling air into the mass flow of the mixture of air-spray concrete in such an amount that the applied air-spray concrete experiences a spontaneous temperature elevation of a few degrees Kelvin immediately after application. A spraying apparatus for the method is also shown.
    Type: Grant
    Filed: February 12, 1990
    Date of Patent: February 19, 1991
    Assignee: Degussa Aktiengesellschaft
    Inventors: Karl-Hans Mueller, Walter Barthel
  • Patent number: 4930942
    Abstract: Flexible, soft objects such as ostomy pouches, wound dressings, bandages, diapers, etc. can be flushed down a conventional toilet by wrapping or enclosing the article within a material that rapidly becomes slimy or exudes a slimy material on contact with the water in a toilet bowl or by adding such materials directly to the bowl.
    Type: Grant
    Filed: October 11, 1988
    Date of Patent: June 5, 1990
    Assignee: E. R. Squibb & Sons, Inc.
    Inventors: Denis E. Keyes, Marvin S. Aronoff
  • Patent number: 4904127
    Abstract: An improved method and related system for pneumatically transporting powdered or granular materials stored in an airtight storage container to a collector through a transport pipe in the form of a lengthy column in high density and at a slow speed by the use of pressurized gas. The method of the invention comprises the steps of stopping feeding of the pressurized gas when the whole of the powdered or granular materials corresponding to a final batch contained in the storage container are sent into the material transport pipe, simultaneously discharging the internal pressure of the storage container through a gas decompressing means, inserting a transport plug from the base end of the material transport pipe, and carrying forward the transport plug at a slow speed by feeding pressurized gas from the base end of the transport pipe.
    Type: Grant
    Filed: June 20, 1988
    Date of Patent: February 27, 1990
    Assignees: Kyowa Hakko Kogyo Co., Ltd., Kabushiki Kaisha Matsui Seisakusho
    Inventors: Kiyoshi Morimoto, Akikazu Iwamoto, Masuo Moriyama, Junji Nakagawa
  • Patent number: 4884925
    Abstract: An apparatus for the transfer of a dry chemical is formed having a sealed solvation hopper positioned between a liquid driven eductor and a fitting for connection to a storage container, e.g. a railcar. At the inlet end of the solvation hopper is a chemical inlet pipe which connects the interior to the exterior of the hopper. Surrounding the chemical inlet pipe are a plurality of nozzles for the introduction of solvation liquid into the hopper. The nozzles are disposed such that the solvation liquid washes the interior surface of the hopper to prevent plugging by hydrates (solvates) which may be formed. At the outlet end of the hopper, the hopper is connected to the suction opening of a liquid eductor. In use, the exterior end of the chemical inlet pipe is connected to the dry chemical storage container. Liquid flowing through the liquid eductor creates a suction and draws dry chemical out of the storage container and into the hopper.
    Type: Grant
    Filed: December 4, 1987
    Date of Patent: December 5, 1989
    Assignee: General Chemical Corporation
    Inventors: Robert A. Kemp, William I. Nelson, Gary W. Foley
  • Patent number: 4871284
    Abstract: Large or small articles are hydraulically transported through a pipeline with the help of fibers that flocculate in the hydraulic liquid to form flocs and networks of flocs which cushion the articles against engagement with the wall of the pipeline pipe. The articles can be packed in capsules and the capsules provided with vanes to improve cushioning. Cushioning can also be improved by introducing stranded lattices into the fiber-floc-containing liquid to thus increase the flocculating action.
    Type: Grant
    Filed: October 13, 1987
    Date of Patent: October 3, 1989
    Assignee: Fibre Dynamics Limited
    Inventor: Geoffrey G. Duffy
  • Patent number: 4856941
    Abstract: An improved method and the related system for pneumatically transporting a powder or granular material placed in an airtight storage container through a transport pipe in high density. In the invention, pressurized gas is being intermittently supplied to the airtight storage container containing the material therein so as to take out of the container and a transport plug is being synchronously fed into the base of the transport pipe, whereby the powder or granular material is successively formed into a long column inside the transport pipe and is pneumatically transported at very slow speed.
    Type: Grant
    Filed: October 20, 1987
    Date of Patent: August 15, 1989
    Assignees: Kyowa Hakko Kogyo Co., Ltd., Kabushiki Kaisha Matsui Seisakusho
    Inventors: Kiyoshi Morimoto, Akikazu Iwamoto, Masuo Moriyama, Atsuroh Sonoda
  • Patent number: 4707162
    Abstract: A pumpable slurry of material particles in water comprises coarse mineral particles having a particle size in the range 5 to 50 mm and fine mineral particles having a size less than 200 micron. The slurry contains 82 to 85%, preferably 83-85%, by weight of mineral particles based on the combined weight of the mineral particles and water. At least 30% by weight of the mineral particles are in the form of coarse particles, 10 to 40% by weight are in the form of fine particles and the balance to 100% by weight are intermediate sized particles.The mineral particles are preferably coal.Slurries of this concentration have special properties in that they are sufficiently fluid to be pumped through a pipeline, yet sufficiently solid when static to be handled by grabs and similar devices.
    Type: Grant
    Filed: August 10, 1984
    Date of Patent: November 17, 1987
    Assignee: The British Petroleum Company p.l.c.
    Inventor: David A. Brookes
  • Patent number: 4645514
    Abstract: Coal-aqueous slurries having improved shear stability and lower viscosity are described. The use of a plurality surfactants each having hydrophilic portion with each surfactant hydrophilic portion having a different molecular weight are utilized in sufficient amounts to wet and disperse particulate coal and water. When two surfactants are utilized, coal-aqueous mixtures may be formulated having up to or over 70% by weight coal when the first surfactant has a hydrophilic portion comprising a relatively large number of ethylene oxide units and the second surfactant has hydrophilic portion comprising a relatively small number of ethylene oxide units.
    Type: Grant
    Filed: July 21, 1983
    Date of Patent: February 24, 1987
    Assignee: Oxce Fuel Company
    Inventor: Robert H. Lane
  • Patent number: 4637418
    Abstract: Liquid containing composition, and the transport of pumping thereof are disclosed, which compositions achieve maximum fluid friction reduction properties at low concentration of a drag reducing agent such as less than 0.015% by weight and preferably less than 0.01% by weight. The drag reducing agent is a polymer of 2-acrylamido-2-methylpropanesulfonic acid. Finely divided solids, such as coal, may be suspended therein.
    Type: Grant
    Filed: October 25, 1984
    Date of Patent: January 20, 1987
    Assignee: Henkel Corporation
    Inventor: Curtis L. Karl
  • Patent number: 4605329
    Abstract: A method and apparatus for hydraulically transporting objects, including particulate material such as coal, along a conduit. A supporting material such as a quantity of flexible fibres are mixed into a liquid and their tendency to flocculate therein is utilized to create a network which will support the objects in the liquid. The objects can be supported in the mix while it is pumped along a conduit, for example a pipe, to thus transport the objects. At the outlet a separation means removes the objects from the mix of liquid and supporting material.
    Type: Grant
    Filed: October 25, 1983
    Date of Patent: August 12, 1986
    Assignee: Fibre Dynamics Limited
    Inventor: Geoffrey G. Duffy
  • Patent number: 4552568
    Abstract: A method for preparing a coal-water slurry is described, comprising the divided addition of dispersing agent or multi-step addition of dispersing agent during grinding in a process for preparing a coal-water slurry by the wet grinding of coal in water.
    Type: Grant
    Filed: July 22, 1983
    Date of Patent: November 12, 1985
    Assignee: Nippon Oil and Fats Co., Ltd.
    Inventors: Taizo Igarashi, Hisao Higuchi, Shingo Yamazaki
  • Patent number: 4536186
    Abstract: The instant invention is directed to a method of reducing the viscosity of an aqueous coal fine slurry which comprises adding poly (dimethyl diallyl ammonium chloride) to the slurry.
    Type: Grant
    Filed: May 2, 1984
    Date of Patent: August 20, 1985
    Assignee: Calgon Corporation
    Inventor: Paul A. Rey
  • Patent number: 4525173
    Abstract: A pumpable slurry of mineral particles, e.g., coal, in water contains 50 to 85% by weight of mineral particles based on the combined weight of mineral particles and water. The mineral component contains at least 30% by weight of coarse particles having a particle size in the range 5 to 50 mm, 10 to 40% by weight of fine particles having a particle size less than 200 micron and the balance to 100% of intermediate sized particles.The slurry is stable without the use of additives and can be pumped through a pipeline.
    Type: Grant
    Filed: May 17, 1983
    Date of Patent: June 25, 1985
    Assignee: The British Petroleum Company p.l.c.
    Inventors: Peter J. Baker, David A. Brookes, Martin Johnson
  • Patent number: 4514189
    Abstract: Particulate carbonaceous materials water mixtures are prepared by adding a condensate which is a condensation product of(a) an aldehyde having from about 1 to about 7 carbon atoms,(b) a benzene derivative such as benzene sulfonic acid, an alkyl benzene sulfonic acid having at least one alkyl group of from about 1 to about 20 carbon atoms and mixtures thereof, and optionally,(c) a naphthalene derivative such as naphthalene sulfonic acid, an alkyl naphthalene sulfonic acid having at least one alkyl group of from about 1 to about 12 carbon atoms and mixtures thereof.The condensate is added in an amount sufficient to reduce viscosity of the water mixture of carbonaceous materials, to stabilize carbonaceous materials in the water network and to improve pumpability. An acid form of the condensate or a salt may be added.
    Type: Grant
    Filed: February 24, 1983
    Date of Patent: April 30, 1985
    Assignee: Diamond Shamrock Chemicals Company
    Inventors: John G. Papalos, Joseph V. Sinka
  • Patent number: 4511364
    Abstract: A mixed fuel comprising powdered coal, oil, water, and a dispersion stabilizer is described. The dispersion stabilizer is comprised of water-insoluble fine particles having a colloid-forming ability. More specifically, the stabilizer is comprised of (1) a water-insoluble natural polymeric compound, (2) a water-insoluble polymeric compound prepared by a chemical treatment or dissolution and regeneration of a natural polymeric compound, (3) a water-insoluble synthetic polymeric compound, or (4) a water-insoluble inorganic hydroxide or oxide, or graphite. This mixed fuel has good fluidity and storage stability.
    Type: Grant
    Filed: June 1, 1982
    Date of Patent: April 16, 1985
    Assignee: Asahi Kasei Kogyo Kabushiki Kaisha
    Inventor: Masaru Mitsumori
  • Patent number: 4504277
    Abstract: Coal-water fuel slurries having long-term storage stability and improved viscosities and comprising finely-divided coal within efficient combustion size range, water, and minor amounts of ammonium salt organic dispersant and alkaline earth metal salt organic dispersant, and process for making such slurries.
    Type: Grant
    Filed: April 13, 1983
    Date of Patent: March 12, 1985
    Assignee: Atlantic Research Corporation
    Inventor: Robert S. Scheffee
  • Patent number: 4500445
    Abstract: This invention relates to the use of phospho-compositions, for example phosphates, pyrophosphates, polyphosphates, organophosphates, etc., as corrosion inhibitors in oxygen-containing aqueous systems of particulate matter such as slurries of solids, such as coal, etc.
    Type: Grant
    Filed: March 10, 1982
    Date of Patent: February 19, 1985
    Assignee: Petrolite Corporation
    Inventors: Eddie French, Thomas G. Braga
  • Patent number: 4498906
    Abstract: Coal-water fuel slurries having long-term storage stability and improved viscosities and comprising finely-divided coal within efficient combustion size range, water, and minor amounts of alkali metal salts of organic dispersants and alkaline earth metal salts of organic dispersants, and process for making such slurries.
    Type: Grant
    Filed: April 16, 1982
    Date of Patent: February 12, 1985
    Assignee: Atlantic Research Corporation
    Inventor: Robert S. Scheffee
  • Patent number: 4496367
    Abstract: A pumpable aqueous slurry of a solid fuel in the form of a pulverized, carbonaceous material and a process for the production of such slurry are described. The aqueous slurry comprises a component which consists of coarse grains of carbonaceous material having a particle size of up to 25 mm, and a further component which consists of a carrier liquid in which the coarse-grained carbonaceous material is suspended. The carrier liquid proper has a solids content of 65-90% by weight and consists of water and pulverized, carbonaceous material having a particle size of at most 0.5 mm, preferably at most 350 .mu.m, and 0.02-2% by weight of at least one additive including a water-soluble surface active compound which consists of an alkylene oxide adduct having a hydrophobic part and a hydrophilic part, said hydrophilic part consisting of a polyalkylene oxide chain, preferably a polyethylene oxide chain, having a length of 40-200 alkylene oxide units.
    Type: Grant
    Filed: May 6, 1983
    Date of Patent: January 29, 1985
    Assignees: AB Carbogel, Berol Kemi AB
    Inventors: Mait M. Mathiesen, Lars I. Gillberg, Karl M. E. Hellsten, Gunvor B. T. Karlsson
  • Patent number: 4492589
    Abstract: Aqueous carbonaceous slurries having reduced viscosity, a stabilized network of carbonaceous material in water and improved pumpability are obtained by having present as a dispersant an alkali or ammonium bis-alkyl sulfosuccinate. An example is the sodium salt of bis-2-ethylhexyl sulfosuccinate.
    Type: Grant
    Filed: September 20, 1982
    Date of Patent: January 8, 1985
    Assignee: Diamond Shamrock Chemicals Company
    Inventors: Martin J. Schick, Edwin L. Kelley
  • Patent number: 4462808
    Abstract: An improved coal-water slurry containing finely divided coal particles and a dispersing agent which is comprised of a water-soluble homopolymer of a monomer represented by the formula: ##STR1## wherein: M is hydrogen, lithium, sodium, potassium, magnesium, or calcium;R is allyl or methallyl;R.sub.1 is hydrogen, allyl or methallyl;R.sub.2 is hydrogen or sulfonate;R.sub.3 is hydrogen or sulfonate; and providing that R.sub.2 is not the same as R.sub.3.These improved coal-water slurries are best formulated at a pH of at least 6 and, preferably, above 8. The dispersants have a molecular weight between 1000-20,000.
    Type: Grant
    Filed: August 4, 1983
    Date of Patent: July 31, 1984
    Assignee: Nalco Chemical Company
    Inventors: Anthony E. Gross, Merle L. Branning, Dodd W. Fong
  • Patent number: 4455149
    Abstract: A process for producing a dispersion composition suitable for use as a fuel is described, comprising kneading (a) a bituminous substance, (b) a low molecular weight aliphatic alcohol, and (c) water, a water-containing organic compound, or an aqueous organic compound suspension to provide a dispersion composition wherein the aqueous alcohol solution as a dispersed phase is dispersed in the bituminous substance as a continuous phase. By causing the phase inversion of the thus-obtained w/o type dispersion composition by kneading it along with a protective colloid at 5.degree. C. to 60.degree. C., and o/w type dispersion composition suitable for use as a fuel can be produced.
    Type: Grant
    Filed: August 14, 1981
    Date of Patent: June 19, 1984
    Assignees: Maruzen Oil Co., Ltd., Nippon Chemtec Consulting Inc.
    Inventors: Takeo Satake, Masahisa Ishigami, Kunio Arimoto, Yorishige Matsuba, Yoshikazu Inoue, Yusuke Tanaka, Kohei Kanda
  • Patent number: 4440543
    Abstract: A method for stabilizing a slurry of finely divided particulate solids in a liquid, the method consisting essentially of dispersing from about 1 to about 10 weight percent, based on the particulate solids, finely divided wood particles in the slurry, thereby improving the stability of the slurry.
    Type: Grant
    Filed: August 10, 1981
    Date of Patent: April 3, 1984
    Assignee: Conoco Inc.
    Inventor: J. Paul Echtler
  • Patent number: 4436528
    Abstract: Aqueous carbonaceous slurries having reduced viscosity, a stabilized network of carbonaceous material in water and improved pumpability are obtained by having present a salt of naphthalenesulfonic acid formaldehyde condensate and at least one water soluble polymer selected from the group consisting of sodium alginate, guar gum, locust bean gum, carboxymethylhydroxypropyl guar gum, hydroxypropyl guar gum and guarpak guar gum. For example, a mixture of 96.8% by weight of ammonium naphthalenesulfonic acid formaldehyde condensate and 3.2% by weight of sodium alginate can be added to an aqueous coal slurry in an amount of 0.31% by weight of the slurry.
    Type: Grant
    Filed: September 17, 1982
    Date of Patent: March 13, 1984
    Assignee: Diamond Shamrock Chemicals Company
    Inventors: Martin J. Schick, Kathy A. Knitter
  • Patent number: 4430248
    Abstract: The instant invention is directed to a method for reducing the viscosity of magnesium hydroxide aqueous slurries which comprises adding an effective amount of a cationic polymer to the magnesium hydroxide slurry. The instant invention is also directed to magnesium hydroxide aqueous slurries containing cationic polymer.
    Type: Grant
    Filed: September 17, 1981
    Date of Patent: February 7, 1984
    Assignee: Calgon Corporation
    Inventor: Paul A. Rey
  • Patent number: 4417901
    Abstract: A mixed fuel of coal and oil in the form of a dispersion of coal particles in oil. The coal particles comprise coal particles (A) having a median diameter of 10 microns or less together with coal particles (B) having a median diameter of between 15 and 42 microns. The ratio of coal particles (A) to coal particles (B) is from 8:2 to 1:9. The absolute value of the difference between the median diameter and the modal diameter of all the coal particles in the mixed fuel of coal and oil is at least 2 microns. The mixed fuel preferably has a water content of 0.6% by weight or less.
    Type: Grant
    Filed: April 28, 1982
    Date of Patent: November 29, 1983
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Takashi Ando, Naoki Oka
  • Patent number: 4415338
    Abstract: Aqueous carbonaceous slurries having reduced viscosity, a stabilized network of coal in water and improved pumpability are obtained by having present a salt of naphthalenesulfonic acid formaldehyde condensate and at least one water soluble polymer selected from the group consisting of gum karaya, mixtures of gum karaya and polyacrylamide and polysaccaride modified with polyacrylate. For example, a mixture of 61.5% by weight of ammonium naphthalenesulfonic acid formaldehyde condensate and 38.5% by weight of gum karaya can be added to an aqueous coal slurry in an amount of 0.13% by weight of the slurry.
    Type: Grant
    Filed: June 10, 1982
    Date of Patent: November 15, 1983
    Assignee: Diamond Shamrock Corporation
    Inventors: Martin J. Schick, Kathy A. Knitter
  • Patent number: 4396397
    Abstract: A stable coal fuel oil mixture which comprises a major portion of fuel oil a minor portion of pulverized coal and from about 0.5-3% by weight of calcium acetate.
    Type: Grant
    Filed: July 19, 1982
    Date of Patent: August 2, 1983
    Assignee: Nalco Chemical Company
    Inventors: Roger W. Kugel, George T. Kekish
  • Patent number: 4375358
    Abstract: Stable, pumpable slurry compositions of finely divided solid carbonaceous material in water are described. The composition includes a gelling agent to provide a supporting gel having a yield stress and a viscosity builder to reduce the bleeding of the supporting gel.
    Type: Grant
    Filed: September 2, 1980
    Date of Patent: March 1, 1983
    Assignee: Conoco Inc.
    Inventors: Charles J. Swartz, William P. Scott
  • Patent number: 4316505
    Abstract: To improve the pumpability of aqueous slurries of mineral dusts, e.g. coal tailings, and cement, there is added a dispersing agent comprising a copolymer of a hydrophilic material and a relatively less hydrophilic material. A preferred dispersing agent is a water-soluble copolymer of polyacrylic acid and polymethacrylic acid.
    Type: Grant
    Filed: January 11, 1980
    Date of Patent: February 23, 1982
    Inventors: Steven A. Lammiman, Michael P. Hardman
  • Patent number: 4316680
    Abstract: A pump system for being set up to work in deep water, for use in sea bed mining; the system including three pipes, a first of which carries compressed air downward and to a lower portion of a main second or eduction pipe through which mined material is carried upwardly with sea water, and a third pipe also carrying bouyancy media downward to the lower portion of the main pipe, so to assist the upward flow of the water carrying the mined material.
    Type: Grant
    Filed: October 1, 1979
    Date of Patent: February 23, 1982
    Inventors: Peter Phipps, George Spector
  • Patent number: 4309269
    Abstract: A process for conveniently transporting particulate coal and crude oil together as a slurry through a pipeline. The coal, having particle size of 20-350 mesh size range, is added to the oil in sufficient amount to form a transportable coal-oil slurry. The slurry is maintained at sufficient velocity and turbulence in the pipeline to prevent solids settling, and also at sufficient pressure, temperature, and time conditions to liquify at least 5 weight percent of the coal. Also, when the sulfur content of the coal used is less than the oil, the sulfur content of the delivered oil portion is reduced during its transit through the pipeline. At its destination, the oil portion can be separated from the slurry and passed to refining operations, while the coal along with some contained heavy oil can be either liquefied to produce hydrocarbon liquid fuel products, or burned as fuel in a power plant.
    Type: Grant
    Filed: May 30, 1979
    Date of Patent: January 5, 1982
    Assignee: Hydrocarbon Research, Inc.
    Inventors: Bernard L. Denker, Peter Maruhnic
  • Patent number: 4305688
    Abstract: This specification discloses a method of transporting particulate solid material as a slurry through a pipeline. A pumpable slurry is formed of the particulate solid material in a solution of alcohol and water as a carrier liquid having an additive therein to thicken it. The slurry is pumped through the pipeline to transport the particulate solid material to a desired location.
    Type: Grant
    Filed: February 19, 1980
    Date of Patent: December 15, 1981
    Assignee: Mobil Oil Corporation
    Inventor: Joseph G. Savins
  • Patent number: 4257723
    Abstract: A device for sucking up solid objects, such as manganese modules, from the sea bed having a suction tube within which the density of the water is reduced by feeding in to said tube form-retaining light objects by means of a vertical supply conduit filled with air under high pressure through which the light objects fall down to enter the suction tube through a water slot, the said supply conduit being connected at its lower and upper end to an air filled return conduit to form a closed circuit, mechanism being provided to generate a downward flow of air in said supply conduit.
    Type: Grant
    Filed: August 21, 1979
    Date of Patent: March 24, 1981
    Assignee: IHC Holland N.V.
    Inventor: Kiem T. Kwee
  • Patent number: 4217212
    Abstract: The invention relates to the broad subject of dewatering phosphate clay wastes and has for its primary object the drainage of existing phosphate slime settling ponds and the reclamation of the drained ponds through the use of the processed slime as a land fill having adequate drainage characteristics.Another object of the invention is to provide a processing step for phosphate slimes which will reduce the environmental impact of mining phosphate to an acceptable level.
    Type: Grant
    Filed: June 19, 1978
    Date of Patent: August 12, 1980
    Inventor: Troy M. Deal
  • Patent number: 4200413
    Abstract: A method of transporting particulate solid material through a pipeline in the form of a stable foam slurry. There is formed a pumpable slurry of the particulate solid material in a stable foam carrier medium and the slurry is flowed through the pipeline to a receiving point.
    Type: Grant
    Filed: November 14, 1977
    Date of Patent: April 29, 1980
    Assignee: Mobil Oil Corporation
    Inventor: John L. Fitch