With Material Moving Or Discharge Means Patents (Class 241/119)
  • Patent number: 11883828
    Abstract: The present disclosure relates to the treatment of streams derived from construction and/or demolition (C&D) debris, such as C&D fines streams, asphalt shingles, drywall, or wood. The process can include a kinetic pulverization stage through a kinetic pulverizer where the frangible materials are size-reduced and the ductile materials are liberated and remain as an oversized fraction. The feedstock can include infrangible materials that also remains as an oversized fraction. The pulverized material is then subjected to a separation stage, which may include mechanical and/or magnetic screening, to separate the oversized material comprising the ductile material, and optionally larger particles of the infrangible material, from the size-reduced material comprising the frangible material, and optionally small particles of infrangible material.
    Type: Grant
    Filed: November 25, 2022
    Date of Patent: January 30, 2024
    Assignee: TORXX KINETIC PULVERIZER LIMITED
    Inventors: Christopher Mueller, Michael Drolet, Peter Everson, Terri Ward
  • Patent number: 11806723
    Abstract: A process for comminuting particles of heterogeneous material. The particles of heterogeneous material are fragmented and broken into smaller particle size by breaking them against each other. Heterogeneous material means two or more different solid materials or phases in the same solid. The component materials may have different specific gravity and/or hardness. In the process, a slurry of particles of heterogeneous material is pumped through an agitated mixture of impingement media, wherein the impingement media has a size greater than a size of the particles, wherein adjacent impingement media interact to create impingement zones through which the particles pass and impinge each other to cause the particles to fracture and break into smaller particles. The impingement media may be from 5 to 10 times larger than the particles. The impingement media may be harder than the particles. The heterogeneous material may be coal.
    Type: Grant
    Filed: June 26, 2021
    Date of Patent: November 7, 2023
    Assignee: OMNIS ADVANCED TECHNOLOGIES, LLC
    Inventors: James S. Swensen, Simon K. Hodson
  • Patent number: 11484057
    Abstract: This system is for implementing a method for feeding of a granulated substance, and is provided with: a feeding path through which cut tobacco is fed toward a tobacco band in a cigarette manufacturing machine; a separation device for separating, by winnowing, the cut tobacco into good products and sub-standard products that are heavier than the good products, in the process of feeding the cut tobacco; an adjustment device that is capable of directly and/or indirectly adjusting the velocity of a current of air used for separation through winnowing; a transfer path which receives and transfers the sub-standard products discharged from the separation device; a weighing device which takes a sample of the sub-standard products being transferred on the transfer path and measures the weight of the sampled sub-standard products and outputs the weighing result; and a controller which, on the basis of the weighing result, controls the operation of the adjustment device so as to bring the sampling weight equal to a targ
    Type: Grant
    Filed: December 22, 2020
    Date of Patent: November 1, 2022
    Assignee: JAPAN TOBACCO INC.
    Inventors: Toru Iwano, Katsuyuki Tsuboi, Kazuyoshi Ono, Tatsuya Iwao
  • Patent number: 11213829
    Abstract: A comminution system for heterogeneous materials includes pumps, a source of liquid in fluid communication with the pumps, a source of heterogeneous material, a mixer to combine the heterogeneous material and the liquid, and nozzles in fluid communication with the pumps, respectively. The pumps are in straight-line alignment with the nozzles. The nozzles receiving the heterogeneous material combined with the liquid direct the combined slurry to an impact zone where the fractions of the heterogeneous material are disassociated.
    Type: Grant
    Filed: October 10, 2019
    Date of Patent: January 4, 2022
    Assignee: DISA TECHNOLOGIES, INC.
    Inventors: Eric Coates, John Lee
  • Patent number: 10722899
    Abstract: Provided is a vertical roller mill equipped with a rotary classifier for causing a plurality of classification blades provided above a rotary table and positioned around an axis to rotate about the axis, wherein: of a solid fuel pulverized by a roller, the rotary classifier guides solid fuel fine powder from an outer-circumferential-side space to an inner-circumferential-side space surrounded by the plurality of classification blades, and suppresses, by collision with the plurality of classification blades, an intrusion of solid fuel coarse powder into the inner-circumferential-side space; and each of the plurality of classification blades is shaped in a manner such that there is no interference between a scattering direction in which the coarse powder that collided with the classification blades scatters and an intake direction in which the fine powder is guided to the inner-circumferential-side space, and the scattering direction is oriented upward relative to a horizontal direction.
    Type: Grant
    Filed: August 31, 2015
    Date of Patent: July 28, 2020
    Assignee: MITSUBISHI HITACHI POWER SYSTEMS, LTD.
    Inventors: Shinji Matsumoto, Takuichiro Daimaru, Kenichi Arima, Taku Miyazaki, Kazushi Fukui, Hidechika Uchida
  • Patent number: 10646877
    Abstract: A system for adjusting a depth of a material bed in a pulverizer mill is provided. The system includes a rotatable bowl, an extension ring, and an extension mechanism. The rotatable bowl has a surface operative to support the material bed while the bowl rotates such that particles of the material bed are pulverized against the surface by one or more grinding rollers of the pulverizer mill. The extension ring is disposed about a circumference of the rotatable bowl extending away from the surface and defines a depth of the material bed. The extension mechanism adjusts at least one of the extension ring and the rotatable bowl while the rotatable bowl rotates. Adjusting at least one of the extension ring and the rotatable bowl via the extension mechanism moves the extension ring in relation to the surface so as to adjust the depth of the material bed.
    Type: Grant
    Filed: March 13, 2017
    Date of Patent: May 12, 2020
    Assignee: GENERAL ELECTRIC TECHNOLOGY GMBH
    Inventor: Paul Mackenzie Colson
  • Patent number: 10603673
    Abstract: Provided is a solid fuel pulverizing device (100) provided with: a ventilation unit (30) configured to ventilate an interior of a housing (11) with primary air for supplying a solid fuel pulverized by a roller (13) to a classifier (16); a pressure detector (50) configured to detect an internal pressure of the housing (11) relative to a reference pressure; a flow rate detector (60) configured to detect a flow rate of the primary air blown into the interior of the housing (11) by the ventilation unit (30); and a controller (40) configured to perform control and transition the solid fuel pulverizing device (100) to a stopped state upon the internal pressure detected by the pressure detector (50) being a predetermined pressure or higher and the flow rate of the primary air detected by the flow rate detector (60) being a predetermined flow rate or less.
    Type: Grant
    Filed: August 24, 2015
    Date of Patent: March 31, 2020
    Assignee: MITSUBISHI HITACHI POWER SYSTEMS, LTD.
    Inventors: Shinji Matsumoto, Takuichiro Daimaru, Kenichi Arima, Taku Miyazaki, Kazushi Fukui, Hiroyuki Kobayashi
  • Patent number: 10486161
    Abstract: The invention relates to a pulveriser mill which includes a rotary grinding member and a port ring (10) which is arranged around a periphery of the rotary grinding member for rotation with the rotary grinding member about an axis. The port ring (10) includes a plurality of vanes (22) which are angularly spaced about the axis in a configuration which allows air to flow from below the port ring (10) to above the port ring (10). The vanes (22) are inclined with respect to the vertical and have an operatively upstream end and a downstream end and a non-planar, arcuately curved leading surface (24) which extends between the upstream end and the downstream end. The vanes (22) furthermore have a non-uniform radial width in the axial direction.
    Type: Grant
    Filed: December 12, 2014
    Date of Patent: November 26, 2019
    Assignee: COAL MILLING PROJECTS (PTY) LIMITED
    Inventor: Pierre Goosen
  • Patent number: 10464072
    Abstract: The invention relates to a method and an apparatus for comminuting grinding stock with a roller mill, wherein a grinding plate cooperates with at least two grinding rollers and the grinding stock supplied in the mass flow is comminuted between grinding plate and grinding roller. At least two grinding rollers are driven via dedicated drives, wherein a power compensation control is carried out for the drives of the grinding rollers, such that the power of the drives is controlled in a predefined ratio to one another. The power control is then effected by changing the mass flow of the grinding stock supplied to at least one of the grinding rollers.
    Type: Grant
    Filed: July 3, 2013
    Date of Patent: November 5, 2019
    Assignee: THYSSENKRUPP INDUSTRIAL SOLUTIONS AG
    Inventors: Pedro Guerrero Palma, Ludwig Könning
  • Patent number: 10335797
    Abstract: A heavy duty drive arrangement (1, 1?) having a first spur gear including a first gear wheel (4; 4?, 4?) meshing with a pinion (3) of a motor (2) and a second spur gear comprising a gear wheel (8; 8?, 8?). A drive pinion (9; 9?, 9?) configured to mesh with a ring gear (10) of the working equipment is coupled to the gear wheel (8; 8?, 8?) of the second spur gear and has an axis of rotation (E) which is essentially parallel to the rotor axis (A). The first spur gear and the second spur gear are coupled by means of a dynamic coupling (5; 5?, 5?), preferably an elastic or a hydrodynamic coupling. A mill (20) may include the heavy duty drive arrangement (1, 1?).
    Type: Grant
    Filed: July 8, 2014
    Date of Patent: July 2, 2019
    Assignee: FLSmidth A/S
    Inventors: Huseyin Yalin, Stefan Rittler
  • Patent number: 10052635
    Abstract: In the method according to the invention for the comminution of grinding stock in a vertical roller mill, the grinding stock is fed upstream of at least one grinding roller in order to form a grinding bed and is comminuted between a grinding table and the at least one grinding roller, the grinding bed which is being formed being settable at a differing height over the width of the grinding roller by means of a feeding device.
    Type: Grant
    Filed: May 23, 2013
    Date of Patent: August 21, 2018
    Assignee: THYSSENKRUPP INDUSTRIAL SOLUTIONS AG
    Inventor: Pedro Guerrero Palma
  • Patent number: 10010889
    Abstract: A vertical roller mill has grinding rollers which roll over a grinding path of a rotatable grinding table, and a surrounding nozzle ring separation area for conveying and separating gas. A coarse fraction of ground material is entrained in gas upwards in ducts from a location that is below, at, or above the nozzle ring separation area and is transported into an entry to a material separator located above the grinding table.
    Type: Grant
    Filed: May 31, 2016
    Date of Patent: July 3, 2018
    Assignee: FLSmidth A/S
    Inventors: David Fortsch, Jason Euculano, William Wentzel, Kurt A. Geiger
  • Patent number: 9868122
    Abstract: The roller mill according to the invention is composed essentially of at least two grinding rollers which interact with a grinding plate for comminuting material to be ground, wherein the at least two grinding rollers or the grinding plate and at least one grinding roller are each assigned a separate drive train for driving same, wherein each drive train has a main motor and a main gear mechanism. At least one drive train additionally comprises a superimposition gear mechanism with a regulating drive, wherein an open-loop and closed-loop control device which is connected to the at least one regulating drive is provided, said open-loop and closed-loop control device regulating the power of the separate drive trains with respect to one another by means of the at least one regulating drive.
    Type: Grant
    Filed: July 31, 2013
    Date of Patent: January 16, 2018
    Assignee: THYSSENKRUPP INDUSTRIAL SOLUTIONS AG
    Inventors: Heiko Fornefeld, Pedro Guerrero Palma
  • Patent number: 9636684
    Abstract: Provided is a vertical pulverizing apparatus capable of suppressing abrasion of throat vanes (40) and elongating their abrasion resistant lives to thereby increase working efficiency. The vertical pulverizing apparatus is characterized in that: a throat (4) is provided between a housing (32) and a pulverizing table (2) and has an annular flow channel which is surrounded by a throat inner peripheral wall (41) and a throat outer peripheral wall (42) and which is partitioned by a large number of throat vanes (40); and a slope part (43a, 43b) extending diagonally downward from an inner peripheral wall surface of the housing (32) toward a top end of the throat outer peripheral wall (42) and a horizontal part (44) extending from a bottom end of the slope part (43b) continuously to the top end of the throat outer peripheral wall (42) are provided so that top end surfaces (40a) of the throat vanes (40) and a top surface of the horizontal part (44) can be set at the same height.
    Type: Grant
    Filed: March 25, 2013
    Date of Patent: May 2, 2017
    Assignee: Mitsubushi Hitachi Power Systems, Ltd.
    Inventors: Yutaka Takeno, Hiroaki Kanemoto, Teruaki Tatsuma, Hideo Mitsui, Takashi Aizawa
  • Patent number: 9604226
    Abstract: A system for suppressing and inhibiting fires in coal pulverizer mills can include a fire suppression solution storage tank, a flow control cabinet, an equipment control/pumping enclosure, an air distribution system, and injection piping and nozzles installed at various positions in one or more pulverizer mills. A first set of nozzle assemblies in communication with the fire suppression solution can be positioned in the mill to disperse the suppression solution within the classifier zone of the mill. A second set of nozzle assemblies in communication with the suppression solution can be positioned within the mill to disperse the suppression solution within the grinding zone. A third set of nozzle assemblies can be positioned within the primary air duct of the mill.
    Type: Grant
    Filed: December 11, 2015
    Date of Patent: March 28, 2017
    Assignee: Innovative Combustion Technologies, Inc.
    Inventor: Richard Paul Storm
  • Patent number: 9399222
    Abstract: An air flow control arrangement for a pulverizer includes an inner ring segment, an outer ring segment, a plurality of vanes, and a plurality of vanes. The inner and outer ring segments are adaptably configured in a spaced relation to each other. Further, the plurality of vanes is spaced apartly arranged between the inner and outer ring segments to form flow ducts. Furthermore, each wingtip of the plurality of wingtip is detachably attached to a respective vane of the plurality of vanes to be adaptably replaceable or changeable.
    Type: Grant
    Filed: June 3, 2013
    Date of Patent: July 26, 2016
    Assignee: ALSTOM TECHNOLOGY LTD
    Inventor: Paul M. Colson
  • Patent number: 9289772
    Abstract: A coal pulverizer including a mill housing, a grinding surface disposed in said mill housing, a grinding wheel engaging said grinding surface for pulverizing coal chunks; an annular throat disposed around said grinding surface channeling a primary airflow from a lower housing portion below said grinding surface upward through an upper housing portion above said grinding surface; an annular secondary airflow chamber extending around an exterior of said upper housing portion channeling a secondary airflow circumferentially into said upper housing portion above said grinding surface; and, an annular secondary airflow deflector extending along an interior of said upper housing portion above said grinding surface directing said secondary airflow from said secondary airflow chamber downward across said grinding surface in a generally uniform uninterrupted circumferential airflow pattern.
    Type: Grant
    Filed: August 1, 2013
    Date of Patent: March 22, 2016
    Assignee: Storm Technologies, Inc.
    Inventors: Richard F. Storm, Danny S. Storm, Adam C. McClellan
  • Patent number: 9221058
    Abstract: Methods and arrangements for determining the fineness of a ground material in a mill are provided, wherein the acoustic spectrum of the mill during the grinding process is used for concluding the fineness. The mill comprises a drum in which the ground material is present during the grinding process, said drum being driven by a magnetic drive having at least one magnetic segment during the grinding process, so that a rotating magnetic field generated with the aid of the magnetic drive causes the drum to rotate. In order to determine the acoustic spectrum, a voltage induced in a coil of the magnetic segment is determined at least intermittently. On the basis of a model, using the detected time-dependent induced voltage, conclusions can be drawn about the acoustic spectrum and therefrom about the fineness.
    Type: Grant
    Filed: August 17, 2011
    Date of Patent: December 29, 2015
    Assignee: SIEMENS AKTIENGESELLSCHAFT
    Inventors: Christoph Huber, Günter Lugert, Randolf Mock
  • Patent number: 9079186
    Abstract: A roller mill includes a grinding table, at least one grinding roller in rolling engagement with the grinding table, a main drive system for driving the grinding roller and/or the grinding table, and an auxiliary drive for driving the grinding table. The auxiliary drive includes at least two linear drives for rotating the grinding table and a control device for individually controlling the linear drives in order to provide an uninterrupted rotational movement.
    Type: Grant
    Filed: January 18, 2011
    Date of Patent: July 14, 2015
    Assignee: ThyssenKrupp Industrial Solutions AG
    Inventors: Ludwig Könning, Guido Scholz, Benjamin Berndzen
  • Patent number: 8925844
    Abstract: The invention relates to a roller mill, in particular a coal mill, with a feed system, having an integrated screw feeder. The screw feeder is arranged virtually horizontally in the region of a grit cone and comprises a screw shaft guided through the roller mill and the longitudinal axis thereof, which screw shaft is arranged on both sides respectively outside of the roller mill and at one end with a drive means and at the other end in a bearing outside of the roller mill. The feed material is fed with the screw conveyer outside of the roller mill and forcibly conveyed therein to a tray side rejection opening above a cone opening of the grit cone and drops together with the coarse grain rejected in the classifier centrally onto the grinding pan. An even distribution of the feed material and improved smooth running of the roller mill and energy saving are achieved and also soiling of the screw shaft is avoided.
    Type: Grant
    Filed: March 15, 2012
    Date of Patent: January 6, 2015
    Assignee: Loesche GmbH
    Inventor: Michael Keyssner
  • Patent number: 8915373
    Abstract: A solid particle flow distribution controller includes an extension skirt configured to be mounted to a discharge skirt at a division between an upstream solid particle conveyance pipe and a plurality of downstream pipes. The extension skirt includes a plurality of circumferential segments. Each segment is movably mounted to the discharge skirt for movement in an upstream and downstream direction with respect to the discharge skirt. The segments of the extension skirt are configured and adapted for motion in the upstream and downstream direction independent of one another to extend upstream of the discharge skirt as needed to improve solid particle distribution among the downstream pipes.
    Type: Grant
    Filed: March 23, 2012
    Date of Patent: December 23, 2014
    Assignee: Babcock Power Services, Inc.
    Inventors: Qingsheng Lin, Joseph Bianca, Jilin Zhang, William Freeman, John W Rath, III
  • Patent number: 8899163
    Abstract: A biomass pulverizing apparatus includes a pulverizing apparatus body including a feedstock supply pipe, the pulverizing apparatus body for supplying biomass feedstock from above in a vertical axial direction, a pulverizing table for placing the biomass feedstock, a drive section for rotationally driving the pulverizing table, a pulverizing roller for pulverizing the biomass feedstock by a pressing force, the pulverizing roller being operated in conjunction with the rotation of the pulverizing table, a blower unit for forming an upward flow upward from below on the outer peripheral side of the pulverizing table so as to jet conveying gas for conveying the pulverized biomass powder in an air stream, a classifier, the classifier for classifying the biomass powder accompanied with the conveying gas, and a blowing gas introduction section.
    Type: Grant
    Filed: May 12, 2011
    Date of Patent: December 2, 2014
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventors: Kazuhiro Takeuchi, Takuichiro Daimaru, Masaaki Kinoshita, Yoshiki Yamaguchi, Norichika Kai
  • Patent number: 8813967
    Abstract: A classifier [100] is disclosed that employs adjustable vanes [140] that may be interactively adjusted to change the distribution of fuel particle sizes that are passed on to a furnace. The classifier employs a frame [133] having a plurality of windows [131] each having an adjustable vane [140]. A control ring [160] is rotated with respect to the frame [133] to simultaneously move links [150] connected between the control ring [160] and the vanes [140]. This causes the vanes [140] to open or close, changing the air flow path and changing the size distribution of particles passing through the classifier [100] to the furnace. The system may include an adjustment system [260] that can automatically sense particle size to optimize several physical parameters related to particle size.
    Type: Grant
    Filed: May 2, 2012
    Date of Patent: August 26, 2014
    Assignee: ALSTOM Technology Ltd
    Inventors: Robert Plant, Mike Godwin, Christopher Daniel Curl
  • Patent number: 8783594
    Abstract: A roller mill includes a rotatable grinding table, at least one grinding roller that is retained rotatably on a pivot lever and is in rolling engagement with the grinding table, with the pivot lever being arranged for pivoting about a pivot lever axis, and a drive train associated with the grinding roller in order to drive the grinding roller with a fixed motor.
    Type: Grant
    Filed: August 24, 2009
    Date of Patent: July 22, 2014
    Inventor: Guido Scholz
  • Patent number: 8727249
    Abstract: A roller mill for grinding particulate material such as for example cement raw materials, cement clinker and similar materials, said roller mill comprising a mill housing enclosing a grinding table and a set of rollers rotatable about a vertical shaft. The set of rollers are configured for interactive operation with the grinding table and comprising a number of rollers each rotating about a roller shaft which is connected to the vertical shaft via a hinged connection with a center of rotation which allows a free circular movement of the roller in upward and downward direction in a plane comprising the centerline of the roller shaft. The center of rotation of the hinged connection in a vertical plane is located under the centerline of the roller shaft.
    Type: Grant
    Filed: June 1, 2009
    Date of Patent: May 20, 2014
    Assignee: FLSmidth A/S
    Inventors: Bent Horning, Alexander Helm
  • Patent number: 8692495
    Abstract: The invention relates to a roller mill having a grinding table, at least one grinding roller and at least two drives with a rotor winding for driving the roller mill and at least one adjustment device for adjusting the motor torque of at least one drive, the adjustment device being connected to the rotor winding of at least one drive in order to influence the rotor current.
    Type: Grant
    Filed: July 30, 2009
    Date of Patent: April 8, 2014
    Inventors: Markus Berger, Franz-Josef Zurhove, Ludger Kimmeyer, Carsten Sachse
  • Publication number: 20140076210
    Abstract: The present invention includes: a mill main body with a material feed pipe for feeding a biomass material from above in a vertical axis direction; a mill table on which the fed biomass material is placed; a drive unit rotating and driving the mill table; a mill roller that operates in conjunction with rotation of the mill table to mill the biomass material by a pressing force; and a ventilation means that forms an upward flow to blow out a carrier gas to convey milled biomass powder, wherein the mill main body has a barrel part decreased in diameter in the middle thereof in the vertical axis direction, and the mill main body has on a top plate thereof a plurality of discharge tubes circumferentially arranged for discharging the biomass powder on a line extended from the diameter-decreased barrel part in the vertical axis direction.
    Type: Application
    Filed: September 30, 2011
    Publication date: March 20, 2014
    Inventors: Takuichiro Daimaru, Tsugio Yamamoto, Kenichi Arima, Masaaki Kinoshita, Kazuhiro Tekeuchi, Norichika Kai, Yoshishige Uematsu
  • Patent number: 8657221
    Abstract: A roller mill structure which achieves uniform distribution of fine particles passed through a rotary classifier to fine particle exits disposed at four points when conveying as pulverized coal milled in the roller mill on the air current is provided. A roller mill structure is configured to discharge pulverized coal obtained by milling a raw coal, which is loaded in a mill body (11), from fine particle exits (14) formed on the top of the mill body so as to be quartered in the circumferential direction to the outside by air current conveyance.
    Type: Grant
    Filed: June 3, 2008
    Date of Patent: February 25, 2014
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventors: Shinji Matsumoto, Tsugio Yamamoto, Kazuhiro Takeuchi, Masahiko Taniguchi
  • Patent number: 8651405
    Abstract: The roller mill according to the invention substantially comprises at least one grinding roller and a grinding table, the grinding table having a grinding table inner space which is open in a downward direction, at least one grinding roller drive system for driving the grinding roller and a grinding table drive system for driving the grinding table. The grinding table drive system further has a gearless direct drive which is arranged in the grinding table inner space.
    Type: Grant
    Filed: March 4, 2010
    Date of Patent: February 18, 2014
    Assignee: Polysius AG
    Inventors: Benjamin Berndzen, Markus Berger, Guido Scholz, Franz-Josef Zurhove
  • Patent number: 8622328
    Abstract: In a vertical roller mill in which a fixed-type cyclone sorter is provided in a casing, the fixed-type cyclone sorter includes a conical member; a fixed-blade entrance window through which a solid-gas two-phase flow is introduced into the interior of the conical member; a flat plate-like fixed blade that causes the solid-gas two-phase flow to spiral; an inner cylinder into which pulverized coal is guided from the bottom end thereof toward the top end thereof by means of spiraling of the solid-gas two-phase flow; and a pulverized-coal exit through which the pulverized coal guided to the top end of the inner cylinder is guided outside the conical member, wherein the fixed blade is provided with a tip portion where a downward flow is increased for the solid-gas two-phase flow guided into the interior of the conical member from the fixed-blade entrance window.
    Type: Grant
    Filed: August 22, 2011
    Date of Patent: January 7, 2014
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventors: Shinji Matsumoto, Takashi Tsutsuba, Koki Matsuzaki, Sotaro Yamaguchi, Yasuhiro Sueoka, Kenichi Arima, Tsugio Yamamoto, Takuichiro Daimaru
  • Patent number: 8616479
    Abstract: A roller mill includes a grinding table arranged for rotation about a mill axis, at least one grinding roller rotated about a grinding roller axis and in rolling engagement with the grinding table, and at least one pivot lever retaining the grinding roller and having a pivot axis orientated parallel with or inclined relative to the grinding roller axis. A fixed motor is connected to the grinding roller via a drive train to transmit drive power, the drive train including a fixed drive train and a movable drive train. The fixed drive train has a drive element in contact with the movable drive train and arranged coaxially relative to the pivot axis of the pivot lever. The two drive trains may be connected to each other via two bevel wheels arranged so that the axes of the bevel wheels intersect in the pivot axis.
    Type: Grant
    Filed: August 24, 2009
    Date of Patent: December 31, 2013
    Assignee: Polysius AG
    Inventor: Guido Scholz
  • Patent number: 8567705
    Abstract: In a vertical mill, a pulverization table is supported with a vertical rotation axis core in a housing so as to be capable of being driven and rotated, and a pulverization roller rotatable in conjunction with rotation of the pulverization table is disposed above the pulverization table so as to be opposed to the pulverization table, and a cutter roller rotatable in conjunction with rotation of the pulverization table is disposed above the pulverization table so as to be opposed to the pulverization table. Accordingly, a solid matter such as biomass can be efficiently pulverized, thereby achieving improvement in pulverization efficiency.
    Type: Grant
    Filed: May 13, 2011
    Date of Patent: October 29, 2013
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventors: Yoshiki Yamaguchi, Kenichi Arima, Yutaka Iida, Yoshishige Uematsu
  • Patent number: 8556202
    Abstract: The invention relates to a roller mill having a grinding pan which is rotatable about a mill axis, on the grinding track of which grinding pan stationarily disposed grinding rollers roll and thereby define with their circumferential surfaces on the grinding track a running circle with an inner diameter and an outer diameter, and having a grinding material distributor for grinding material to be reduced, which is arranged as an elevation in the centre of the grinding pan coaxially with respect to the mill axis and rotates with the grinding pan.
    Type: Grant
    Filed: January 26, 2010
    Date of Patent: October 15, 2013
    Assignee: Loesche GmbH
    Inventor: Joerg Langel
  • Patent number: 8528844
    Abstract: A roller mill for grinding particulate material such as cement raw materials, cement clinker and similar materials includes a mill housing, a substantially horizontal and stationary grinding table, and a number of rollers each rotating about a roller shaft which is connected to a rotatable vertical shaft centrally positioned relative to the stationary grinding table. The rollers are configured for interactive operation with the grinding table. The grinding table is stationary. The roller mill also includes at least one first device utilized for introducing gases into the mill housing and at least one second device for continuously diverting ground material suspended in gases out of the mill housing. As a consequence hereof, the process for the roller mill with a stationary grinding table will be continuous and the diameter of the grinding table will not be subject to limitations.
    Type: Grant
    Filed: June 1, 2009
    Date of Patent: September 10, 2013
    Assignee: FLSmidth A/S
    Inventors: Bent Horning, Alexander Helm
  • Patent number: 8413917
    Abstract: A roller mill for grinding particulate material such as cement raw materials, cement clinker and similar materials comprises a mill housing surrounding a substantially horizontal grinding table, a number of rollers each rotating about a roller shaft and configured for interactive operation with the grinding table and at least one mechanism or device for introducing gases into the mill housing. The at least one mechanism or device for introducing gases into the mill housing comprises an annular duct having openings in a wall facing the grinding table and being located around the outer circumference of the grinding table. As a consequence hereof, a significant reduction of the pressure loss in a roller mill and thus a significant reduction of energy consumption will be ensured.
    Type: Grant
    Filed: June 1, 2009
    Date of Patent: April 9, 2013
    Assignee: FLSmidth A/S
    Inventor: Bent Horning
  • Patent number: 8366031
    Abstract: A mill having a grinding member carrying one or more fixed openings (37) at its periphery, wherein in the vicinity of the fixed opening(s) there is provided one or more variable openings (36), the fixed and variable openings permitting air to flow from beneath the grinding member to above the grinding member. This arrangement allows for good air flow control; air speed may be kept desirably low even when the mill must be run at a high mass flow rate.
    Type: Grant
    Filed: June 19, 2008
    Date of Patent: February 5, 2013
    Inventor: Paul Andrew Comer
  • Patent number: 8336796
    Abstract: An annular impactor structure for use in crusher/classifiers of the updraft type. An annular structure comprising a plurality of radially inwardly projecting, essentially vertical impactor plates of high-hardness material is located immediately above a vane structure such that entrained particulate matter from a milling bowl impacts one or both of the impactor plate surfaces. The impactor plates as well as the backer structures between the impactor plates are covered with coin-shaped protrusions. The impactor plate structure can be used in combination with a single or double course vane structure.
    Type: Grant
    Filed: September 10, 2010
    Date of Patent: December 25, 2012
    Inventor: Rickey E. Wark
  • Patent number: 8317119
    Abstract: A double course vane assembly for use in connection with the milling bowl of a pulverizer/classifier. The two courses are either attached to the outer peripheral edge of the milling bowl so as to rotate with the bowl or are attached to the pulverizer/classifier wall so as to remain stationary. In both embodiments, the vane courses are concentric with one another. The vanes in the first course are angled in one sense and the vanes of the second course are angled in the opposite sense.
    Type: Grant
    Filed: September 9, 2010
    Date of Patent: November 27, 2012
    Inventor: Rickey E. Wark
  • Patent number: 8308093
    Abstract: An improved deflector structure for an updraft classifier mill for coal and ore is described. The improved deflector structure has an impingement surface which is characterized by a pattern of surface irregularities, either raised geometric figures or recesses of varying sizes and shapes to create turbulence in the air emerging from a rotating vane structure and impinging the deflector as it travels upwardly through the mill housing.
    Type: Grant
    Filed: January 11, 2010
    Date of Patent: November 13, 2012
    Inventor: Rickey E. Wark
  • Patent number: 8308088
    Abstract: A pulveriser mill having a rotatable grinding ring and a rotatable port ring around the circumference of the grinding ring co-rotatable therewith, the port ring defining around its 360 degree extent a plurality of openings separated by lands, the openings permitting air to flow from beneath the grinding ring to above the grinding ring, and the lands serving as obstructions to the flow of air from beneath the grinding ring to above the grinding ring, wherein the aspect ratio of the openings is in the range from 1:1 to 3:1.
    Type: Grant
    Filed: February 23, 2012
    Date of Patent: November 13, 2012
    Inventor: Paul Andrew Comer
  • Patent number: 8262006
    Abstract: The invention relates to a roll mill having a grinding plate rotatable about an axis of rotation, at least one grinding roller in rolling engagement with the grinding plate, and a main drive for driving the grinding plate. An auxiliary drive for driving the grinding plate, and a regulating device are also provided, the regulating device including at least one damping regulator which regulates the auxiliary drive in dependence on torque variations of the main drive and/or variations in the speed of rotation of the grinding plate.
    Type: Grant
    Filed: May 27, 2008
    Date of Patent: September 11, 2012
    Assignee: Polysius AG
    Inventors: Markus Berger, Pedro Guerrero Palma
  • Patent number: 8136746
    Abstract: The present invention relates generally to the field of coal flow in the outlet portion of a coal pulverizer, and in particular to a new and useful system/apparatus, method and drive means for controlling the position of one or more coal flow vanes in the upper portion of a coal pulverizer. The system and/or apparatus in accordance with the present invention utilizes a “cartridge” which is insertable into a turret at the top portion of a coal pulverizer, the present invention permitting the control of one or more coal flow vanes via an internal control system/means. In certain embodiments, the “cartridge” in accordance with the present invention encircles the raw coal inlet pipe, and is insertable into a turret at the top portion of a coal pulverizer, the present invention again permitting the control of one or more coal flow vanes via an internal control system/means.
    Type: Grant
    Filed: June 22, 2010
    Date of Patent: March 20, 2012
    Inventors: William N. Martin, Eric D. Fuller
  • Patent number: 8113452
    Abstract: A roller mill for grinding particulate material such as cement raw materials, cement clinker and the like includes a grinding table and a set of rollers rotatable about a vertical shaft. The set of rollers include a number of rollers rotating about separate roller shafts, which are connected to the vertical shaft. A nozzle ring for directing gases into the roller mill is also included. The nozzle ring encloses the grinding table. Means for regulating the gas flow through the nozzle ring is also provided. At least some of the regulation means are arranged to rotate together with the rollers. Preferably, the position of at least some of the regulation means for regulating gas flow through the nozzle ring relative to the rollers may remain the same so that the gases introduced into the mill via the nozzle ring may exhibit the same flow pattern in relation to the rollers.
    Type: Grant
    Filed: September 25, 2008
    Date of Patent: February 14, 2012
    Assignee: FLSmidth A/S
    Inventors: Jan Folsberg, Rainer Closter Jespersen
  • Patent number: 8100351
    Abstract: The invention relates to a method and a device for grinding hot, wet raw material. The invention is particularly suitable for the cement industry and the grinding and simultaneous drying of cement clinker, slag and aggregates. In order to achieve a throughput increase and energy saving, as well as an improvement in the product quality, particularly with mixed cements, there is a simultaneous grinding and drying through a controlled supply of a cooling gas in the upper mill part with a relatively high hot gas inlet temperature in the lower mill part. The cooling gas supplies ensures a predetermined gas-product temperature downstream of the classifier and replaces or significantly reduces the disadvantageous cooling water injection.
    Type: Grant
    Filed: July 19, 2006
    Date of Patent: January 24, 2012
    Assignee: Loesche GmbH
    Inventors: Willy Lohle, Hans Bonk, Franz-Josef Heuken
  • Patent number: 8052077
    Abstract: A method for preparing a carbon siccative for producing electrodes. The dust fraction is produced continuously by a mill/sifter combination with a grain size or specific surface area adjustable during operation, preferably by a roller grinding mill with an integrated sifter.
    Type: Grant
    Filed: September 2, 2004
    Date of Patent: November 8, 2011
    Assignee: Claudius Peters Technologies GmbH
    Inventors: Jens-Peter Thiel, Thore Möller
  • Publication number: 20110168819
    Abstract: An improved deflector structure for an updraft classifier mill for coal and ore is described. The improved deflector structure has an impingement surface which is characterized by a pattern of surface irregularities, either raised geometric figures or recesses of varying sizes and shapes to create turbulence in the air emerging from a rotating vane structure and impinging the deflector as it travels upwardly through the mill housing.
    Type: Application
    Filed: January 11, 2010
    Publication date: July 14, 2011
    Inventor: Rickey E. WARK
  • Patent number: 7967226
    Abstract: A drying mill for powdered or fine-grained material, in particular also suitable for calcining gypsum, employs a housing, in which a feed device for fuel gas, opening into a lower region, a comminuting device and a material inlet, charging the material onto the comminuting device from above, are provided one above the other, a material outlet leading to the outside from an upper region of a working chamber and a return leading downwards to the comminuting device, the comminuting device being a centrifugal disc which rotates in a horizontal plane and interacts with an impact casing arranged on the inside of the housing. A nozzle ring surrounding the centrifugal disc from below is provided for feeding fuel gas into the working chamber. As a result, the calcining process in particular is assisted in an efficient way by utilizing the thermal energy of the hot gas fed into the working chamber by means of the nozzle ring and the dwell time in the working chamber. A corresponding comminuting method is provided.
    Type: Grant
    Filed: July 25, 2006
    Date of Patent: June 28, 2011
    Assignee: Claudius Peters Technologies GmbH
    Inventor: Volker Göcke
  • Patent number: 7963467
    Abstract: The invention relates to a safety system ensuring availability of a milling or crushing plant with a roller grinding mill, which is provided in a combined plant, more particularly for the mill drying of cement raw material. For bringing about an almost 100% redundancy, in particular six milling rollers are provided. The roller grinding mill is designed in such a way that 80% of the full milling capacity can be provided in four-roller operation.
    Type: Grant
    Filed: August 12, 2004
    Date of Patent: June 21, 2011
    Assignee: LOESCHE GmbH
    Inventor: Thomas Loesche
  • Patent number: 7946516
    Abstract: The invention relates to a roller mill for grinding solid material such as cement raw materials and similar materials, said roller mill comprising a substantially horizontal grinding table and at least two rollers which are configured for interactive operation with said grinding table. The roller mill also comprises a feed chute for delivering solid material to be ground by gravity to said grinding table that is a conveyor that fluidizes the material as it is being delivered to the grinding table.
    Type: Grant
    Filed: December 31, 2009
    Date of Patent: May 24, 2011
    Assignee: FLSmidth A/S
    Inventors: Dwayne R. Schantz, John S. Salmento
  • Patent number: RE44772
    Abstract: An improved deflector structure for an updraft classifier mill for coal and ore is described. The improved deflector structure has an impingement surface which is characterized by a pattern of surface irregularities, either raised geometric figures or recesses of varying sizes and shapes to create turbulence in the air emerging from a rotating vane structure and impinging the deflector as it travels upwardly through the mill housing.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: February 25, 2014
    Inventor: Rickey E. Wark