Loose Grinding Body Comminutor (e.g., Ball Or Rod Mills) Patents (Class 241/170)
  • Patent number: 9764295
    Abstract: A grinding and mixing mechanism for mixing and grinding fluid paint or fluid slurry includes a barrel, a rotor rotatably mounted in the barrel, grinding rolls rotatably mounted in the outer perimeter of the rotor and rotatably kept in contact with the inner barrel wall of the barrel for grinding a fluid paint or slurry, and a stirrer connected to the rotor for synchronous rotation with the rotor to mix the fluid paint or slurry circulated through the barrel. The invention also provides a mixer grinder using the grinding and mixing mechanism.
    Type: Grant
    Filed: February 10, 2015
    Date of Patent: September 19, 2017
    Assignee: CATHAY COATING MANUFACTURE CO., LTD.
    Inventor: Kuang-Nan Juan
  • Patent number: 9352360
    Abstract: The present subject matter provides colored wear tiles for use in optical sorting apparatuses and related methods that separate an associated material into a desired product and an undesired product. The colored wear tiles have a color and/or lightness value that permeates the entire body of the wear tile and sufficiently differs from the color and/or lightness of the associated material in order to allow the colored wear tile, or portions or pieces thereof, that may mix with the associated material, to be separated from the desired product by the sorting apparatus.
    Type: Grant
    Filed: June 10, 2014
    Date of Patent: May 31, 2016
    Assignee: CERCO LLC
    Inventor: Gary C. Troyer
  • Publication number: 20150129692
    Abstract: Ball mill (10) comprising at least two milling cup retainers (13) arranged on a machine base plate (12), each milling cup retainer being designed for a milling cup (23) clamped in the milling cup retainer in a lying position, each milling cup having end-face milling cup ends and a filling of balls as milling bodies and comprising a drive that causes a rotational motion of the milling cup retainers (13) characterized in that each of the milling cup retainers (13) arranged in pairs is put in restraint-guided circular motion, oriented parallel to the plane of the machine base plate (12) by means of the drive via two eccentric shafts (25) connected to the milling cup retainers (13) on faces opposite to each other in relation to an axis of symmetry of the milling cup (23), a counterweight (28) being arranged on each of the two eccentric shafts (25) associated with a respective milling cup retainer (13) and passing through the machine base plate (12), below the machine base plate, and on the face of the eccentric s
    Type: Application
    Filed: June 14, 2013
    Publication date: May 14, 2015
    Inventors: Jürgen Pankratz, Stefan Mähler, Matthias Niewind, Frank Janetta
  • Publication number: 20150033912
    Abstract: A system for mechanical milling and a method of mechanical milling are disclosed. The system includes a container, a feedstock, and milling media. The container encloses a processing volume. The feedstock and the milling media are disposed in the processing volume of the container. The feedstock includes metal or alloy powder and a ceramic compound. The feedstock is mechanically milled in the processing volume using metallic milling media that includes a surface portion that has a carbon content less than about 0.4 weight percent.
    Type: Application
    Filed: July 30, 2013
    Publication date: February 5, 2015
    Applicant: General Electric Company
    Inventors: Laura Cerully Dial, Richard DiDomizio, Matthew Joseph Alinger, Shenyan Huang
  • Patent number: 8470749
    Abstract: The invention provides a process for preparing a neutral or an overbased detergent, the process by: reacting (a) a pre-prepared suspension comprising (i) a metal base with a mean particle size of 10 micrometers or less; (ii) a surfactant; and (iii) an organic medium in which the metal base is suspended typically by a physical process. An overbased detergent may be formed with a further reaction with acidifying overbasing agent. The invention further provides a lubricant composition containing said neutral and overbased detergent.
    Type: Grant
    Filed: December 20, 2006
    Date of Patent: June 25, 2013
    Assignee: The Lubrizol Corporation
    Inventors: Elisa Seddon, Claire Hollingshurst, Brian R. Cunningham, Alexander F. Psaila, David Hobson, Mohamed G. Fahmy, Willis P. Nichols, John W. Dunkerley
  • Publication number: 20130008988
    Abstract: The present invention is related to a grinding device, comprising a body configured as a hollow barrel having an open and a first fixing element positioned close to said open; an inner cap configured to mount to an inner wall of an end close to said open of said body having a second fixing element corresponding to said first fixing element; wherein an aperture is provided on said inner cap, and a first leak-proof seal is configured to surround said aperture; an outer cover having a second leak-proof seal, wherein said second leak-proof seal is made joint said first leak-proof seal for leak-proofing; and a grinding element positioned inside said body and capable of moving therein freely; wherein an area of any cross section of said grinding element is bigger than said aperture of said inner cap.
    Type: Application
    Filed: December 6, 2011
    Publication date: January 10, 2013
    Applicant: REGA BIOTECHNOLOGY INC.
    Inventors: Shih-Hung KUO, Bruce LAI
  • Publication number: 20120280069
    Abstract: Increased surface area for a milled product is provided by modifying a standard vibrating media mill for a bottom feedstock feed instead of a top feed, and by replacing the front discharge grate with a solid disk having a slot or slots in the upper region thereof to increase dwell time. In one embodiment, ceramic media replaces the traditional depleted metal ball media.
    Type: Application
    Filed: May 6, 2011
    Publication date: November 8, 2012
    Inventor: Clinton Wesley Pike, SR.
  • Patent number: 8205817
    Abstract: A bead mill for performing wet comminuting including a stationary vessel having an internal wall and forming a milling chamber to be filled at least partly with milling bodies, raw particles and a carrying liquid to form a suspension within the milling chamber; an activator shaft, rotatable around an axis concentric with the stationary vessel and a rotating activator connected to the activator shaft, to comminute said raw particles to produce milled particles; characterized in that said bead mill further comprises a separator, containing a separator chamber disposed substantially vertically, a laminarization portion providing an upward laminar suspension flow within the separator chamber, to separate the milled particles from the milling beads and raw particles depending on the flow velocity of said upward laminar suspension flow.
    Type: Grant
    Filed: January 7, 2011
    Date of Patent: June 26, 2012
    Assignee: Frewitt Fabrique de Machines SA
    Inventors: Edward Brook-Levinson, Boris Petrov, Thierry Jomini
  • Publication number: 20120064787
    Abstract: A method is disclosed of producing stable nanosized colloidal suspensions of particles with limited crystallinity loss, products thereof, use of the products and an apparatus for the method. In particular the present invention relates to a wet milling method with small beads wherein the size of the final particles in suspension are stabilized in the nanorange (D50<75 nm) and at the same time the particles substantially maintain the crystallinity.
    Type: Application
    Filed: March 22, 2010
    Publication date: March 15, 2012
    Applicant: VALINGE PHOTOCATALYTIC AB
    Inventors: Steen Brummerstedt Iversen, Hans Rasmussen, Christian Ausig Christensen, Henrik Jensen, Theis Reenberg
  • Publication number: 20110309175
    Abstract: Milling apparatus suitable for mechano-chemical breakdown of contaminated media reliant upon housed ball mill units each able to be cradle mounted to receive a rotational drive of a shaft and to feed material downwardly from housing to housing.
    Type: Application
    Filed: June 21, 2011
    Publication date: December 22, 2011
    Inventors: Bryan Geoffrey Black, Owen Ross Williams
  • Publication number: 20110168820
    Abstract: A stirred ball mill assembly includes multiple vessels each having a body supporting sets of magnets rotatable with respect to the body. Each vessel defines an enclosed milling chamber, and has a stirring arm assembly extending in the respective enclosed milling chamber and connected for rotation with the respective sets of magnets. The sets of magnets and the stirring arm assembly are completely enclosed within the respective vessel. The vessels are configured to be stacked with one another so that adjacent ones of the sets of magnets are magnetically coupled with one another. A drive motor assembly has another set of magnets magnetically coupled with one of the sets of magnets of the stacked vessels. The drive motor can rotate the stirring arm assemblies within the milling chambers of the milling chambers of the stacked vessels via magnetic coupling of the magnets.
    Type: Application
    Filed: January 12, 2010
    Publication date: July 14, 2011
    Applicant: Wildcat Discovery Technologies
    Inventor: Kenneth James Micklash, II
  • Publication number: 20110147507
    Abstract: The invention relates to a device (1) for producing chocolate by mixing and grinding ingredients, such as cacao mass, cacao butter, sugar and/or milk powder, comprising a mixer (3), a grinder (4), and means for passing the mixture from the mixer (3) to the grinder (4). The mixer (3) comprises a toroidal, preferably annular vessel (6) for receiving and mixing the ingredients.
    Type: Application
    Filed: April 6, 2009
    Publication date: June 23, 2011
    Inventor: Simon Jakob van Leverink
  • Patent number: 7915188
    Abstract: A useable particulate nepheline syenite having a grain size to provide an Einlehner Abrasive Value of less than about 100 is described. The particulate nepheline syenite is generally free from agglomeration and moisture free. At least 99% of the nepheline syenite particles have a size less than 10 microns. In practice, the nepheline syenite grain size is less than about 5 microns and the distribution profile of the particulate system is generally 4-5 microns.
    Type: Grant
    Filed: April 4, 2008
    Date of Patent: March 29, 2011
    Assignee: Unimin Corporation
    Inventors: Jerry William Janik, Scott Van Remortel
  • Patent number: 7896267
    Abstract: A material to be treated containing solid particles in a liquid is stirred together with milling media, and irradiated with ultrasonic waves during stirring to finely mill the solid particles to nanometer size and disperse the solid particles in the liquid. The ultrasonic waves create cavitation in the liquid and upon decay of the cavitation, shock waves are produced that cause the solid particles to vigorously collide with one another and with the milling media and these collisions, together with the shearing forces created by collision of the milling media, can produce on a commercial scale nano particles having an average particle size of at most 100 nm.
    Type: Grant
    Filed: February 14, 2008
    Date of Patent: March 1, 2011
    Assignee: National Institute for Materials Science & Inoue Mfg., Inc.
    Inventors: Takamasa Ishigaki, Ji-Guang Li, Kimitoshi Sato, Hidehiro Kamiya, Yoshitaka Inoue, Choji Hatsugai, Takashi Suzuki
  • Patent number: 7744027
    Abstract: A planetary ball mill includes: a revolution turning arm turned about a revolution shaft rotated by a driving force; mill pots each supported on the revolution turning arm so as to be rotated about a rotation shaft inclined from the vertical direction toward the side of the revolution shaft; and an outer circumferential pot receiver which is disposed fixedly on the upper side of the revolution turning arm along the whole part of a circumference around the revolution shaft and with which the outer peripheral surfaces of the mill pots revolving attendantly on the turning of the revolution turning arm make contact, whereby the mill pots are put into rotation.
    Type: Grant
    Filed: February 15, 2007
    Date of Patent: June 29, 2010
    Assignee: Nagao System Inc.
    Inventor: Fumiyoshi Nagao
  • Publication number: 20090301352
    Abstract: Provided are methods for producing carbonate-containing compositions comprising silicon-based material (e.g., pozzolanic material) from a source of carbon dioxide, a divalent cation-containing solution, and a source of proton-removing agents. In such methods, divalent cations of the divalent cation-containing solution are provided by digestion of material comprising metal silicates. Also provided are methods for producing carbonate-containing compositions comprising little or no silicon-based material. In such methods, silicon-based material (e.g., silica, unreacted or undigested silicates, aluminosilicates, etc.) may be separated and processed separately from carbonate-containing compositions. Silicon-based material and carbonate-containing material may be blended at a later stage to produce a pozzolanic material, which may be further processed and blended with, for example, Portland cement.
    Type: Application
    Filed: July 10, 2009
    Publication date: December 10, 2009
    Inventors: Brent R. Constantz, Laurence Clodic, Cecily Ryan, Miguel Fernandez, Kasra Farsad, Sidney Omelon, Philip Tuet, Paulo Monteiro, Gordon E. Brown, JR., Katharine Geramita
  • Publication number: 20090283018
    Abstract: A clean dry white glass powder useful as a substitute for Portland cement in concrete, in paints, and for other known uses for glass powder produced conventionally can be produced from unsorted post-consumer waste glass, including a substantial fraction of non-glass items, by employing glass pulverizing equipment to reduce waste glass to small fragments, allowing removal of trash, employing a multistep washing process to clean the glass fragments, in the preferred embodiment using aggregate cleaning equipment, drying the fragments, preferably using fluidized bed techniques, and grinding the glass to a desired particle size, preferably using a ball mill, in combination with an air classification step to produce a bright white glass powder of uniform particle size.
    Type: Application
    Filed: May 15, 2008
    Publication date: November 19, 2009
    Inventors: Louis P. Grasso, JR., Louis P. Grasso, SR., Patrick S. Grasso, SR., Elliot Kracko, Cynthia A. Andela
  • Publication number: 20090127360
    Abstract: The process of the present invention includes obtaining a feed material having an initial median particle size. A solution of a polycarboxylate dispersant in water is formed, then the feed material is added to the solution to form a slurry. The slurry is wet-ground to reduce the median particle size of the feed material. Optionally, the total amount of polycarboxylate dispersant is divided into a plurality of doses that are added periodically over the total grinding time.
    Type: Application
    Filed: November 15, 2007
    Publication date: May 21, 2009
    Inventors: Sharon Louise Tracy, David B. McDonald, Qingxia Liu
  • Publication number: 20090054718
    Abstract: A method for producing a decomposer of an organic halogenated compound comprises subjecting an iron powder produced beforehand to plastic deformation that gives the iron powder particles a flat shape. Further, an iron powder and a copper salt powder are mechanically mixed in a ball mill to produce a copper salt-containing iron particle powder in which the particles of the two powders are joined. In this case, the method for producing the decomposer of an organic halogenated compound is characterized in that the iron powder is mechanically deformed to give the particles a flat shape.
    Type: Application
    Filed: March 22, 2006
    Publication date: February 26, 2009
    Inventors: Masami Kamada, Taishi Uehara
  • Publication number: 20080308659
    Abstract: A clean dry glass powder useful as a substitute for Portland cement in concrete, in paints, and for other known uses for glass powder produced conventionally can be produced from unsorted post-consumer waste glass, including a substantial fraction of non-glass items, by employing glass pulverizing equipment to reduce waste glass to small fragments, allowing removal of trash, employing a multistep washing process to clean the glass fragments, in the preferred embodiment using aggregate cleaning equipment, drying the fragments, preferably using fluidized bed techniques, and grinding the glass to a desired particle size, preferably using a ball mill, in combination with an air classification step to produce a glass powder of uniform particle size.
    Type: Application
    Filed: May 15, 2008
    Publication date: December 18, 2008
    Inventors: Louis P. Grasso, JR., Louis P. Grasso, SR., Patrick S. Grasso, SR., Elliot Kracko, Cynthia A. Andela
  • Publication number: 20080199715
    Abstract: A Nd—Fe—B type anisotropic exchange spring magnet is produced by a method of obtaining powder of a Nd—Fe—B type rare earth magnet alloy which comprises hard magnetic phases and soft magnetic phases wherein a minimum width of the soft magnetic phases is smaller than or equal to 1 ?m and a minimum distance between the soft magnetic phases is greater than or equal to 0.1 ?m, obtaining a compressed powder body by compressing the powder, and obtaining the Nd—Fe—B type anisotropic exchange spring magnet by sintering the compressed powder body using a discharge plasma sintering unit.
    Type: Application
    Filed: April 15, 2008
    Publication date: August 21, 2008
    Applicant: NISSAN MOTOR CO., LTD.
    Inventors: Munekatsu Shimada, Hideaki Ono, Takae Ono, Makoto Kano, Tetsurou Tayu
  • Publication number: 20080135798
    Abstract: A nano-size lead-free piezoceramic powder and a method of mechanochemically synthesizing the same are provided. The nano-size lead-free piezoceramic powder can have a basic component of (KxNa1-x)NbO3, where x ranges from 0 to 1. A weight ratio of a milling ball to a raw powder can be set, and then the milling ball and the raw powder can be provided into a milling container at the set ratio. Nano-size lead-free piezoceramic powder can be mechanochemically synthesized using a high-energy ball mill device.
    Type: Application
    Filed: November 14, 2007
    Publication date: June 12, 2008
    Inventors: Jae Ho Jeon, Jung Yeul Yun
  • Publication number: 20080116304
    Abstract: Disclosed are fine powder of waste polyurethane foam and a manufacturing method thereof. According to this invention, fine powder of waste polyurethane foam can be manufactured using a crushing process including primary and secondary coarse crushing steps and a fine grinding step and a classification process, thereby solving conventional problems of the deterioration of the properties and the difficulty forming a desired cell structure, due to the use of waste polyurethane powder having a large particle diameter, and widening the range of waste polyurethane that can be recycled.
    Type: Application
    Filed: November 16, 2006
    Publication date: May 22, 2008
    Applicants: Industry-Academic Cooperation Foundation Gyeongsang National University, JS Tech Co., Ltd.
    Inventors: Jin-Kuk Kim, Kyum-Woo Choi
  • Patent number: 7216822
    Abstract: An agitator mill comprises an annular cylindrical exterior grinding chamber which is defined by an inner wall of a grinding receptacle and an outer wall of a rotor; and an interior grinding chamber which is defined by an inner wall of the rotor and an outer casing of an interior stator. The grinding chambers are interconnected by a deflection chamber. g<h applies to the radial gap width g of the exterior grinding chamber in relation to the radial gap width h of the interior grinding chamber.
    Type: Grant
    Filed: July 1, 2005
    Date of Patent: May 15, 2007
    Assignee: Bühler AG
    Inventors: Norbert Stehr, Philipp Schmitt
  • Patent number: 6655617
    Abstract: A simply and compactly built drive system for a tube mill is provided whose force transmission is no longer threatened by flexures and other deformations of the grinding tube. A one-piece ring gear having a diameter less than or equal to the diameter of the grinding tube is attached to the small diameter end of a discharge cone of the grinding tube.
    Type: Grant
    Filed: March 21, 2002
    Date of Patent: December 2, 2003
    Assignee: KHD Humboldt Wedag AG
    Inventors: Alexander Hagedorn, Norbert Aufsfeld
  • Patent number: 6126097
    Abstract: In accordance with a preferred embodiment, a rolling-type planetary ball mill apparatus for producing nanometer-scaled powders is disclosed, the apparatus comprising (a) a main rotary wheel comprising supporting members, (b) a plurality of mill pots which are revolvable by receiving a rotational force from the main rotary wheel through their corresponding supporting members, and are disposed around the main rotary wheel with substantially equal distance between one mill pot and another, each mill pot comprising a tiltable pivotal shaft having rotary coupling means so that the pot can also rotate about its own axis, each pivotal shaft having one end being supportably connected to its corresponding supporting member of the main rotary wheel; (c) motor means in drive relation to the main rotary wheel for providing rotational forces thereto; and (d) a non-revolvable counter-acting supporting ring disposed coaxially with the main rotary wheel and in the close, working vicinity of the mill pots; each tiltable pivot
    Type: Grant
    Filed: August 21, 1999
    Date of Patent: October 3, 2000
    Assignee: Nanotek Instruments, Inc.
    Inventors: Shizhu Chen, Junsheng Yang, Bor Z. Jang
  • Patent number: 6029920
    Abstract: It is an object to provide a continuous type dispersing apparatus arranged to disperse particle media in a vessel by stirring blades thereof to satisfactorily perform a process for dispersing a material to be dispersed to effectively use energy of the stirring blades to disperse pigment so as to reduce required quantity of the particle media to be discharged, prevent generation of short pass and chocking phenomena, secure safety, obtain excellent crushing efficiency and dispersing efficiency and attain economical advantage.
    Type: Grant
    Filed: July 21, 1998
    Date of Patent: February 29, 2000
    Assignee: Toyo Ink Manufacturing Co., Ltd.
    Inventors: Hideo Shimizu, Makoto Dohi
  • Patent number: 5957398
    Abstract: A pulverizer for pulverizing a product has a container and at least one working part within the container, which may contain a pulverizing medium. At least one of (1) an inner liner of the container, (2) an outer shell of the working part and (3) an outer shell of the pulverizing medium is formed from a composite ceramic material containing aluminum oxide material as a main component, and zirconium oxide material in an amount of 15-40 wt. %. At least one of Y.sub.2 O.sub.3 and CeO.sub.2 is present in the zirconium oxide material in an amount of 0.1-5 mol %. A pulverizer may comprise at least one of a working part of the pulverizer and a container having a Vickers hardness (Hv) of 1300 kgf/mm.sup.2 or higher, and a pulverizing medium whose Vickers hardness (Hv) is 100-600 kgf/mm.sup.2 lower than that of the Vickers hardness of said at least one of the working part and the container member.
    Type: Grant
    Filed: June 6, 1997
    Date of Patent: September 28, 1999
    Assignee: Toray Industries, Inc.
    Inventors: Tomohiko Ogata, Minoru Takuwa, Shouichiro Goto, Shin-ichi Itou, Yasuhiro Nakano, Toru Tsurumi
  • Patent number: 5934581
    Abstract: A mill for the fine grinding of solid particles in general comprises a casing defining an internal grinding chamber through which extends a motor-driven, rotatable shaft having outer surface which is helical along a longitudinal portion thereof and having stirrer means for stirring grinding bodies in the grinding chamber, the grinding bodies being given a component of movement along the axis of the shaft which, being superimposed on the mixing movement generated by the stirrer means, causes their circulation within the grinding chamber so as to make the temperature therein uniform and the ground product more homogeneous.
    Type: Grant
    Filed: July 5, 1996
    Date of Patent: August 10, 1999
    Assignee: Food Technologies S.r.l.
    Inventor: Ottorino Chiappa
  • Patent number: 5927621
    Abstract: A process comprising: milling first particles, second particles, and a milling component, wherein the first particles are reduced in average diameter particle size to from about 3 to about 100 nanometers.
    Type: Grant
    Filed: July 10, 1997
    Date of Patent: July 27, 1999
    Assignee: Xerox Corporation
    Inventors: Ronald F. Ziolo, Rachel L. Pieczynski
  • Patent number: 5921477
    Abstract: An apparatus and method for preparing tissue samples for DNA, RNA or protein extraction of the present invention includes a reciprocating saw mounted to a frame and connected to a plurality of tissue sample containers containing tissue samples and agitation members. By activating the reciprocating saw, the tissue samples are ground by the agitation members. A control circuit is connected to the saw for controlling the speed and duration of the agitation.
    Type: Grant
    Filed: September 13, 1996
    Date of Patent: July 13, 1999
    Assignee: Pioneer Hi-Bred International, Inc.
    Inventors: Dwight T. Tomes, John G. K. Williams, Michael E. Moore
  • Patent number: 5707861
    Abstract: An auxiliary holder of tubes intended for disintegration of living cells, such as yeast cells, in the presence of glass beads, as well as for mixing substances and pellet resuspension. The holder is installed on a vibrator. Due to specially-made gaps between the tubes and the main parts of the holder the processed cells and substances are subjected to a complex impact of vibration created by the vibrator and shocks created by the holder. The holder strongly enhances the effectiveness of the vibrator. During the disintegrating process the presence of a researcher is not required.
    Type: Grant
    Filed: September 14, 1995
    Date of Patent: January 13, 1998
    Assignee: Scientific Industries, Inc.
    Inventors: Michael Sherman, Yury Sherman, Katerina Sherman
  • Patent number: 5607981
    Abstract: Method of manufacture of paint and adhesive of rubber from vulcanized rubber that is reclaimed, becoming a product that provides impermeability, flexibility and resistance to the pellicle by process of reduction to small particles through cracking beater mills, immersed in adequate solvents and recovered in ball mills to which is added products such as dyeing, pigments, asphalts, oils, accelerators, resins, etc., which give to the paint or adhesive its final characteristics.
    Type: Grant
    Filed: February 7, 1994
    Date of Patent: March 4, 1997
    Assignee: Relastomer S/A
    Inventor: Luiz C. Oliveira da Cunha Lima
  • Patent number: 5593097
    Abstract: The invention provides apparatus for grinding comprising a generally cylindrical vessel containing grinding media, extending into said cylindrical vessel an agitator rotatable about its shaft and having pegs extending generally perpendicular to said shaft wherein said pegs extend within about 1 to about 3 mm of said vessel and wherein the diameter of said vessel is between about 10 and about 20 mm.
    Type: Grant
    Filed: June 10, 1994
    Date of Patent: January 14, 1997
    Assignee: Eastman Kodak Company
    Inventor: Douglas D. Corbin
  • Patent number: 5518187
    Abstract: A method of preparing particles of a drug substance or diagnostic imaging agent which comprises grinding the drug substance or imaging agent in the presence of grinding media comprising a polymeric resin. The method provides particles exhibiting reduced contamination.
    Type: Grant
    Filed: January 12, 1994
    Date of Patent: May 21, 1996
    Assignee: Nano Systems L.L.C.
    Inventors: Joseph A. Bruno, Brian D. Doty, Evan Gustow, Kathleen J. Illig, Nats Rajagopalan, Pramod Sarpotdar
  • Patent number: 4840686
    Abstract: A carbon or alloy steel heat treated grinding rod having improved wear resistance and breaking resistance for use in a rotating grinding mill. The surface of the rod has a martensitic microstructure having a hardness of at least HRC 55. The core of the rod has a bainitic microstructure having a hardness of at least HRC 40. A preferred rod composition includes at least 0.7% carbon, at least 0.25% of molybdenum, at least 0.25% chromium, less than 0.7% manganese, the balance iron and unavoidable impurities, all percentages by weight.
    Type: Grant
    Filed: April 6, 1988
    Date of Patent: June 20, 1989
    Assignee: Armco Inc.
    Inventors: Charles R. Arnett, James P. Bruner
  • Patent number: 4632316
    Abstract: A method and apparatus for processing substances electromagnetically having a container for receiving conductive working pieces and substances to be processed and magnetic field generators located adjacent said container to generate violent random motion of said working pieces is disclosed. The method comprises the steps of operating said apparatus at a first magnetic field intensity level slightly greater than the minimum intensity level required to generate random motion of said working pieces, and then periodically either increasing or decreasing the intensity level from said first intensity level to maintain random motion of said working pieces. Similarly, the apparatus comprises a timing mechanism which periodically either increases or decreases the intensity level from said first intensity level.
    Type: Grant
    Filed: October 26, 1982
    Date of Patent: December 30, 1986
    Assignee: Fuji Electric Co., Ltd.
    Inventors: Yasuo Watanabe, Mitsuhiro Nakamura
  • Patent number: 4632315
    Abstract: An apparatus and method for electromagnetically crushing, mixing and stirring substances is disclosed. The apparatus has a container for containing ferromagnetic or non-magnetic conductive working pieces together with substances to be processed, shifting magnetic field generators which act on and generate a random motion of the work pieces, and a mechanical driver which imparts a relative motion to said container on a plane generally parallel with the shifting direction of the shifting magnetic field generated by said shifting magnetic field generators. Similarly, the method comprises moving the container relative to shifting magnetic field generators on a plane generally parallel with the shifting directions of the generated magnetic fields.
    Type: Grant
    Filed: October 26, 1982
    Date of Patent: December 30, 1986
    Assignee: Fuji Electric Co., Ltd.
    Inventors: Yasuo Watanabe, Hideomi Kanno
  • Patent number: 4620672
    Abstract: A system for converting a coal slurry flowable through a pipeline to a coal water mixture capable of being rendered suitable for direct combustion in a boiler. The system includes a pipeline extending from a region adjacent to a mine or source of coal to a region adjacent to a boiler or furnace at which combustion is to take place. In the furnace region, the slurry from the pipeline is directed into a holding space, such as a pond, from which it is directed to a grinding apparatus. On the way to the grinding apparatus from the pond, a side stream of the slurry is directed through a dewatering apparatus where the concentration of the side stream is increased from 50-55 weight percent of solids to about 70-80 weight percent of solids. The outlet of the dewatering apparatus is directed back to the main flow of slurry from the pond, and the main flow enters the grinding apparatus where the slurry is ground to a particle size suitable for combustion, such as 70-80% weight percent of solids at -200 mesh.
    Type: Grant
    Filed: February 4, 1985
    Date of Patent: November 4, 1986
    Assignee: Bechtel International Corporation
    Inventors: Irving Leibson, Horst Huettenhain
  • Patent number: 4585538
    Abstract: For cleaning purposes, residual anodes obtained in fused-salt electrolysis are rotated and exposed to a flow of striker bodies which knock the bath material off the residual anode. To this end it is particularly recommended to pivot the residual anode from a vertically suspended position to an inclined pivoted position, in which free-falling striker bodies strike the anode with sufficient force and clean the same.
    Type: Grant
    Filed: August 8, 1984
    Date of Patent: April 29, 1986
    Assignee: Kaiser Aluminium Europe Inc.
    Inventor: Helmut Bachmann
  • Patent number: 4403742
    Abstract: A dramatic reduction in the time required to fine-grind high borate solder glasses is achieved. In the prior art method, the glass is ball-milled in the presence of an amine for about seven days or more. It has now been discovered that by first rod-milling such glasses for a period of from about 1/2 to about 24 hours, the time required for the "amine grind" can be shortened to a period of from about 1 to 3 days. A further improvement is that rod milling eliminates the laborious sieving procedure previously employed to ensure the absence of undesirably large particles in the feed to the amine grinding operation.
    Type: Grant
    Filed: November 13, 1980
    Date of Patent: September 13, 1983
    Assignee: The Dow Chemical Company
    Inventor: Marinda L. Wu
  • Patent number: 4313574
    Abstract: An apparatus for the activation of cement comprises at least one electromagnetic particle size reducer having a common reducer hopper at the inlet ensuring a gravity feeding of cement to the reducer, and a series sequence including a receiving hopper having a crusher and a conveying screw in a casing having a classifier in the form of a screen arranged at the outlet of the screw and communicating with the reducer hopper having an inclined bottom wall, the screen of the classifier comprising a body of revolution which is rigidly secured to the shaft of the screw coaxially with the shaft and arranged together with a portion of the screw and casing inside the reducer hopper upstream the inlet of the electromagnetic reducer.
    Type: Grant
    Filed: December 4, 1979
    Date of Patent: February 2, 1982
    Inventors: Viktor F. Rogov, Igor G. Nikiforov, Ruben A. Tatevosian, Mikhail Y. Titov, Nikolai K. Lipatov
  • Patent number: 4250015
    Abstract: Hydrogenation of coal is improved through the use of a mechanical force to reduce the size of the particulate coal simultaneously with the introduction of gaseous hydrogen, or other hydrogen donor composition. Such hydrogen in the presence of elemental tin during this one-step size reduction-hydrogenation further improves the yield of the liquid hydrocarbon product.
    Type: Grant
    Filed: December 18, 1978
    Date of Patent: February 10, 1981
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: Ralph T. Yang, Robert Smol, Gerald Farber, Leonard M. Naphtali
  • Patent number: 4150750
    Abstract: An apparatus for separating seeds and twigs from vegetable material is disclosed. The apparatus is comprised of an outer container which is divided into a first portion and a second portion by a wall attached to the first portion. A battery-operated electrical motor is attached to an inner surface of the first portion. A switch is provided for activating the motor. A rotatable shaft extends from the first portion through a hole in the wall into the second portion and a gear mechanism drivingly couples the rotatable shaft to the electric motor. A rotatable separating mechanism is fixedly secured to the rotatable shaft within the second portion and includes an apertured container into which vegetable material to be processed is placed. The second portion defines a collection chamber for receiving vegetable material from the apertured container after seeds and twigs have been separated fro the vegetable material.
    Type: Grant
    Filed: October 3, 1977
    Date of Patent: April 24, 1979
    Assignee: Heads Up Enterprises
    Inventor: Herbert Sawasky
  • Patent number: 4134557
    Abstract: A ball grinding mill in which the grinding bodies are formed at least partially of ferro-magnetic material and are propelled about the grinding chamber by a magnetic field.
    Type: Grant
    Filed: May 27, 1977
    Date of Patent: January 16, 1979
    Assignee: I.O.S. Industria Ossidi Sinterizzati S.r.l.
    Inventors: Armando Lazzari, Alfredo Cartoceti, Eberhart Steinort
  • Patent number: 4134553
    Abstract: Grinding apparatus comprising a container, means for generating a magnetic field within the container, and means for varying the magnetic field to cause relative movement between material to be ground and grinding medium in the container, at least one of the grinding medium and material to be ground being magnetic material, and the container being substantially of non-magnetic material, such as rubber or plastics.
    Type: Grant
    Filed: May 27, 1977
    Date of Patent: January 16, 1979
    Assignee: I.O.S. Industria Ossidi Sinterizzati S.r.l.
    Inventors: Eberhart Steinort, Armando Lazzari, Alfredo Cartoceti
  • Patent number: 4096666
    Abstract: An abrasive finishing machine comprising a cylindrical tub and a rotating base has annular sealing members attached to the tub and base of which the stationary sealing member is formed with axial ports for the injection of cooling fluid under pressure to cool and lubricate the rubbing surfaces and to wash intruding particles back into the tub.
    Type: Grant
    Filed: February 2, 1977
    Date of Patent: June 27, 1978
    Assignee: Osro Limited
    Inventor: David Brown
  • Patent number: 4050897
    Abstract: An apparatus that comprises (a) a fluid-tightly closeable materials-treating or reaction chamber with at least its body portion substantially completely enclosed by a temperature-control fluid chamber provided by its being surrounded by a temperature-control fluid jacket, (b) means to rotate the jacketed chamber end over end about an axis substantially normally transverse to its central axis, (c) divider-baffling means dividing its temperature-control fluid chamber into a plurality of, such as four, substantially similar and independent control-fluid compartments or quadrants, (d) temperature-control fluid ingress means which enable feeding temperature-control fluid into such quadrant while the reactor is rotating, (e) means in each compartment or quadrant to affect the flow of fluids through it to provide substantially uniform overall heat transfer from each of them; and (f) fluid egress means to enable discharging heat-control fluid from these compartments during the rotation.
    Type: Grant
    Filed: July 27, 1976
    Date of Patent: September 27, 1977
    Assignee: Normac, Inc.
    Inventor: Max Klein
  • Patent number: 3987967
    Abstract: The proposed method of working materials comprises the action upon a material placed in a chamber by a plurality of magnetic elements of a magnetically hard material placed in the same chamber and moving chaotically under the action of an alternating magnetic field produced by an electric winding in the space where the chamber is found. The method of the present invention is characterized in that the magnetic elements are placed in the chamber to form a layer whose height is selected within the limits: ##EQU1## WHERE A IS THE AVERAGE SIZE OF THE MAGNETIC ELEMENTS, CM;h.sub.c is the height of the layer of the magnetic elements, cm;B.sub.r is the remanent induction of the magnetically hard material, gausses;.sub.I H.sub.c is the coercive magnetic force of the magnetically hard material, oersteds;.rho. is the density of the magnetically hard material, g/cm.sup.3 ;g is the acceleration of gravity, cm/sec.sup.2.
    Type: Grant
    Filed: December 15, 1975
    Date of Patent: October 26, 1976
    Inventors: Jury Nikolaevich Kuznetsov, Vladimir Alexandrovich Abrosimov
  • Patent number: 3933316
    Abstract: A mill for crushing or comminuting material such as mineral ores. The mill includes a cradle mounted on fulcrum pins carried by a support frame. An upwardly concave arcuate wall of the cradle carries a relatively large diameter roll member having a hollow interior in which a second smaller diameter hollow roll member is carried. Slots are formed in the first roll member to comminuciate material into and from the interior thereof, and a slot may also be formed in the second roll member to communicate material into and from its interior. The lower portion of the cradle is supported in offset relationship from the fulcrum pins by means of compressions springs mounted on the frame.
    Type: Grant
    Filed: March 21, 1974
    Date of Patent: January 20, 1976
    Assignee: Resource Products, Inc.
    Inventor: Roy D. Jones