US3770214A - Fine grinding device - Google Patents

Fine grinding device Download PDF

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Publication number
US3770214A
US3770214A US00197273A US3770214DA US3770214A US 3770214 A US3770214 A US 3770214A US 00197273 A US00197273 A US 00197273A US 3770214D A US3770214D A US 3770214DA US 3770214 A US3770214 A US 3770214A
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United States
Prior art keywords
housing
cylindrical
containers
screw
defining
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Expired - Lifetime
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US00197273A
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English (en)
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K Gabor
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Individual
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Individual
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Priority claimed from FR7040365A external-priority patent/FR2112800A5/fr
Priority claimed from FR7040704A external-priority patent/FR2114054A6/fr
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
    • B02C17/16—Mills in which a fixed container houses stirring means tumbling the charge

Definitions

  • the present invention has an object a comminuting device the energy consumption of which is reduced owing to the fact that impact shocks are avoided and that displacement of the, material to be comminuted is effected at a small angle in relation to the wall of the device and to the elements in motion.
  • a rotary actuator in the form of a shaft supportingat least two successive portions of an Archimedian screw or feed screw, the two portions being ,of opposite sense.
  • the two feed screws are preferably, but not necessarily of the same diameter and the same pitch. Moreover,
  • the shaft is vertical and is arranged in such manner that the screw portions are completely immersed in the mixture of balls and the material to be comminuted or ground.
  • the housing isin the case also vertical. Nevertheless its horizontal cross-section is advantageously non-circular in such manner that the walls of this housing are not located at a constant distance from the cylindrical envelope enclosing the screws.
  • the cross-section is advantageously in the form of a polygon the sides of which may be rectilinear or curved.
  • each part of the vertically disposed housing which is occupied by one of the screw portions there is produced an axial current in the mass or mixture of material in contact with the respective screw portion, which current is ascending or descending according to the direction of the sense of the screw, and around the one screw portion there is produced a current which comprises an axial component of opposite sense to the current around the other screw portion; there is also produced a horizontal rotation component which corresponds to the direction of rotation of the screw.
  • each screw there exist by reason of the cross-section of the housing, zones in which the wall approaches the cylindrical envelope surrounding the screw in accordance with the direction of rotation of the screw and where compression of the mass or the mixture occurs, and there exist other zones in which the wall recedesfrom the said cylindrical envelope and where in contrast expansion of the mass or mixture occurs.
  • the screw portions are disposed at adjacent locations on the shaft which carries them in such manner that the mass or mixture engaged by the screws is divided-into currents which meet without mutual impact, but are pressed against each other at the level at which the feed direction changes.
  • the housing has a cross-section in the form of acircle sector, or in other words of a triangle the base of which is a circular arc; this construction permits several housings to be juxtaposed in a complete cylinder and facilitates the realisation of a complex grinder or mill with a plurality of compartments.
  • grinder or mill compartments are associated one with the other and are fed in series with the material to be ground or milled. This operation causes the materials to be mixed and ground down to pass through a succession of continuously operating mixer grinders having vertically disposed axes and similar capacities, but different mechanical characteristics.
  • This process is preferably performed, as has been mentioned above, with a continuous operating mixing and grinding apparatus constituted by a single housing which is compartmented by vertical walls permitting material to be comminuted to pass in series from one compartment to the other, eachv compartment being equipped with a vertical rotary actuator If the material to be comminuted is associated in mixture with a liquid vehicle and the grinding or milling compartments are watertight, the material is-injected under pressure into this series of compartments, the connection of each compartment with the following one comprising a restrictor device for controlling the passage of the mixture.
  • the inlet pressure ensures not only the circulation of the mixture from one compartment to the other, but moreover a pressure can be maintained in one or more successive compartments on account of the pressure at which the mixture is injected, which can be close to the inlet pressure and which is favourable for the grinding process, whereas the circulation of'the material to be comminuted is being slowed down.
  • each of the compartments is controlled by a measuring device whereby the pres- .sure drop in the compartments can be adjusted in accordance with the desired result.
  • the various compartments are actuated as described above in that the pressure control valves are located in external pipe sections which connect the top of one compartment to the bottom of an adjacent compartment, all the compartments being produced by radial partitions in one vertical cylinder.
  • the actuators that is to say sections of Archimedian screw of opposite sense carried by the same vertical shaft as described above, are driven by hydraulic motors which are fed from a common source which supplies liquid under pressure and which feeds moreover a pump by which the mixture is injected under pressure into the first of the grinding or milling compartments.
  • the common source may be a common hydraulic device, such as a single hydraulic pump possibly associated with a hydraulic accumulator, which is arranged to feed each of the hydraulic motors by way of a pressure regulator with a calibrated valve and an outlet control device.
  • a common hydraulic device such as a single hydraulic pump possibly associated with a hydraulic accumulator, which is arranged to feed each of the hydraulic motors by way of a pressure regulator with a calibrated valve and an outlet control device.
  • Each hydraulic motor may be associated with a pump suitable for the power of this motor, and it is possible to operate all these driving fluid delivering pumps by a common motor.
  • FIG. 1 is a diagrammatic vertical section through a grinder or mill according to the invention
  • FIG. 2 is a diagrammatic illustration of a preferred constructional form of the grinder or mill according to the invention
  • FIG. 3 is an elevation, partly broken away, of a practical embodiment of the invention
  • FIG. 4 is a plan view of this latter constructional form
  • FIG. 5 is a plan view of a grinder or mill with four compartments
  • FIG. 6 is a perspective view of the grinder or mill according to FIG. 5,
  • FIG. 7 illustrates diagrammatically an assembly of grinders or mills according to the invention
  • FIGS. 8 and 9 illustrate in diagrammatic form an elevation and a plan view, respectively, of a grinder or mill arrangement
  • FIG. 10 is a complete connection diagram of a grinder or mill system.
  • a comminuting device, grinder or mill illustrated in FIG. 1 comprises a housing 1 with vertical walls and any kind of horizontal cross-section, and a vertical shaft 2 arranged to be driven by a motor 3.
  • the shaft carries two portions of Archimedian screws or feed screws 4 and 5 which are of the same pitch but opposite sense; moreover, the screws have the same envelope diameter D.
  • the housing contains a material to be comminuted or ground which may be a powder or a mixture of powders, in the dry state or also incorporated in a liquid vehicle in such manner that it forms a paste as well as balls of steel, ceramic, glass, steatite, or any other hard elements the balls being either all of the same diameter or of different diameters.
  • a material to be comminuted or ground which may be a powder or a mixture of powders, in the dry state or also incorporated in a liquid vehicle in such manner that it forms a paste as well as balls of steel, ceramic, glass, steatite, or any other hard elements the balls being either all of the same diameter or of different diameters.
  • the material to be ground may be introduced through a lateral inlet opening 6 of the housing and may be discharged through an outlet opening which is provided with an appropriate closure and comprises a filter 8 adapted to retain the balls, but permitting the comminuted material to leave.
  • each of the screw portions 4 and 5 produces according to the sense of rotation and independently of the all-over rotary movement effected in the mass by the rotation of the screw, an axial current around the shaft 2, and an axial current of opposite direction combined with the said rotary movement in the space comprised between the cylindrical envelope of the screw and the wall of the housmg.
  • the axial currents adjacent to the shaft are descending in the lower portion of the screw 5 and ascending in the upper portion, the corresponding currents close to the walls being in the opposite direction.
  • the housing 1 has in cross-section the form of circle sector occupying a quarter circumference. Its two flat walls are sheathed by an angled plate 9 which is fixed thereto by means of sealing devices 11 in order to define a cooling water jacket connected to feed pipes and outlet pipes 10.
  • the motor 3 drives the shaft 2 by means of pulleys 12 and 13 and a belt 14.
  • the motor is connected to a timing device 15 having a control range of for example from 1 to 60 minutes.
  • the whole assembly is enclosed in a casing 16 which is perforated and louvred for ventilation and which is mounted overlying a base 17.
  • the openings 6 and 7 are controlled by valves 18 in the form of sectors.
  • This apparatus may be utilised with discontinuous operation, that is to say by charging it through the upper opening 6 with a limited quantity of material and setting it to rotation for a period of time determined by the timing device 15.
  • the continuous feed may be obtained, when the apparatus operates in liquid phase, from a charge reservoir or also by means of a feed pump.
  • the feed from a hopper may be effected by means of an Archimedian screw or feed screw.
  • the continuous flow of dry particles may be extracted from the outlet by a suction device and separated from the air current by filtering.
  • the lower opening 7 is placed, as shown in FIG. 2, at the level of the lower helical portion and that a suction effect for the material supplied is produced because of the vicinity of the level N at which the. helices change direction, in such manner that for operating direction indicated in FIG. 2, the lower part of the apparatus operates like a suction pump.
  • the assembly may be realised as illustrated in FIGS. 5 and 6. 1
  • housings 1A, 1B, 1C and ID are realised.by.di-. viding a cylinder 20 by means of two crossed partition walls 21 and 22.
  • Each of the housings accommodates an actuator 2 fitted with two (or more than two) screw portions of opposite pitch directions, the whole being actuated in such manner that at the level at which the sense between the two screws .changes direction and nearest to the bottom, the converging material currents are centripetal.
  • a box 24 for example, by means of a compression nut 25 whcih is preferably operable by hand in order to permit quick mounting and dismounting.
  • Each box comprises a connection for a tube 26. It contains, moreover, a filter or grid 30 which retains the balls in each housing.
  • the material to be treated enters the lower por tion of the housing IA and leaves the upper portion of the latter in order to enter the lower portion of the next following housing 18, and so on, until the product leaves the upper portion of the housing 1D.
  • each housing may be treated in the same manner in each housing that is to say with balls of the same diameter and of the same quantity, and with shafts 2 carrying identical helices rotating at the same speed. It is also possible to use balls of different diameters or different speeds in each of the housings.
  • the balls in the four housings may be of decreasing diameters.
  • the balls may have diameters of 6; 4; 2.5; and 1.5 mm, respectively.
  • Each pipe connects the upper portion of preceding compartment to the lower portion of the next following compartment.
  • the compartments are fed in series under pressure by a pump Pwith the material to be ground in mixture with a liquid.
  • a pump P With all valves bl, b2, .b3 and b4 are open, the pressure of the pump is dissipated progressively in the four compartments as far as an outlet S.
  • the pressure in the compartment C1 increases until it approaches the pressure of the pump P, while the circulation speed of the mixture decreases.
  • the pressure in the compartments Cl and C2 can be maintained in a similar way by closing the valve b2.
  • Complementary valves cl and c2 may be provided to permit the mixture to be re-cycled by guiding it back upstream of the pump. Finally, valves d1 and d2 control respectively the inletand the outlet of the mixture.
  • the compartments C1, C2, C3 and C4 are preferably provided in a cylinder 1 by means of rectangular partitions 42 and 43.
  • the various pipes a1, a2 and a3 are located externally of this cylinder; they may be disposed as indicated herebefore.
  • each of the actuators e1, e2, e3, e4 (FIG. 10) respectively contained in each of the cornpartments C1, C2, C3 and C4, there are preferably used hydraulic motors M1, M2, M3 and M4.
  • the actuators themselves are preferably constituted by vertical carrier shafts each having at least two' Archimedian screw portions of opposite sense, as also described above.
  • the pump P is also driven by a hydraulic motor M.
  • Each of the hydraulic motors receives fluid under pressure from a driver pump, respectively P0 in the case of the motor M and P1, P2, P3 and P4 in the case of the motors M1, M2, M3 and M4.
  • the five pumps are carried by a common shaft 44 which is driven by an electric motor 45, preferably of the flame-proof type.
  • the pumps draw hydraulic fluid from an oil tank 6 through filters F0, F1, F2, F3 and F4.
  • the feed pressure is adjusted by means of pressure regulators with calibrated controlled valves g0, g1, g2, g3 and g4, and the quantity of liquid distributed to each motor is determined by a respective control valve h0, hl, h2, h3 and k4. As indicated by arrows, the leakages from the various motors return to the reservoir.
  • Speed indicators j0, jl, j2, j3 and j4 indicate the rotational speed of the various motors. However, whereas the speed indicators jl, j2, j3 and j4 are normally graduated in revs.per minute, the speed indicator j0 which is associated with the volumetric pump P serves as an output meter and may be graduated in litres per hour.
  • valves b1, b2, b3 and b4 permit the control of the pressure in the various compartments. This pressure is indicated by the pressure gauges kl, k2, k3 and k4, whereas the pressure gauge k0 indicates the initial pressure.
  • the installation may comprise cocks ml, m2, m3 and m4 for the removal of samples of the comminuted product.
  • a control device n for the temperature of the final product may be mounted at the outlet of the apparatus.
  • Such installation permits the output of the treated product to be varied by controlling the pump P, varying the speed of each of the actuators varying the internal pressure in the compartments, and by adjusting the temperature in operation.
  • the control may be at least approximately effected by an adjustment of the output as a function of the grinding period, in a single comminuting device, of a defined sample quantity.
  • balls of the balls may be used, the diameters of which vary in steps from 6 mm to 1.5 mm in decreasing order.
  • compartments lower than four can be used in the example illustrated and if necessary a single compartment only, and the apparatus may even be divided into two groups of two compartments in order to obtain simultaneously comminution of two different materials. It is, however, preferably in this latter case to provide a second feed pump.
  • the invention is useful as already indicated for fine grinding in a liquid phase as well as in a dry phase, pharmaceutical products, cosmetic products, foodstuffs and so on. Also, paints, printing inks and, in a general way, all colouring materials may be ground and dispersed by apparatus constructed in accordance with the invention. According to the nature of the material to be treated and the desired grinding capacity, the volume of the housings may vary from a few litres to a few cubic metres.
  • a device wherein said housing is vertical, and defining walls located at different distances from an imaginary cylindrical envelope enclosing said screw means.
  • a device wherein the crosssection of the housing is in the form of a sector ofa circle.
  • a device wherein a portion of the Archimedean screw comprises 2% screw turns.
  • a device comprising a plurality of said housings defining containers, each defining a volume in the shape of a cylindrical sector, and said various containers communicating in series with each other.
  • a device comprising a plurality of said housings defining containers, each defining a volume in the shape of a cylindrical sector, said various containers communicating in series with each other,
  • said containers communicate with each other by pipes which are external to a cylindrical volume defined by said plurality of cylindrical sectors, and which connect an upper part of one housing to the lower part of the next following housing in the zone thereof comprising the lower screw portion.
  • a device comprising a plurality of said housings defining containers, each defining a volume in the shape of a cylindrical sector, said various containers communicating in series with each other,
  • said housings communicate with each other by pipes which are external to a cylindrical volume defined by said plurality of cylindrical sectors, and which connect a lower part of one housing to the upper part of the next following housing in the zone thereof comprising an upper of said screw means.
  • each housing comprises in its cylindrical wall an upper window and a lower window to each of which is attached from the outside a connecting box provided with or adapted to receive a pipe for connecting two housings.
  • a device wherein said housing constitutes a single housing in the form of a cylindrical sector, the plane walls of which comprise a jacket for the circulation of a cooling fluid, and
  • a motor means for said actuator means which is controlled by a timing device.
  • a device as claimed in claim 1 adapted more particularly for materials in a liquid phase, comprising a plurality-of compartments mounted in series, wherein the compartments are watertight, wherein the material is injected under pressure into the compartments which are connected in series, andwherein the connection of each compartment to the following compartment and the outlet of the last one compartment comprises each a valve adapted to restrict the passage of the material.
  • a device wherein upstream of each valve, there is mounted a pressure gauge for indicating the operating pressure, whereas at the inlet of the first compartment, there is mounted a pressure gauge indicating the pressure at which the material is injected.
  • connecting pipes between said containers are conduits mounted externally of the latter, and control valves being disposed in said conduits.
  • each of the hydraulic motors is associated with a feed pump at the outlet of which are disposed a pressure regulator 19.
  • terial to be comminuted is injected under pressure into a first of said containers by a volumetric pump driven by a hydraulic motor, each of the actuator means of the various containers being also driven by a hydraulic motor.
  • a device wherein the hydraulic motors are fed by a source of fluid under pressure, each through an adjustable pressure regulator and 22.
  • each of the hydraulic motors comprises a revolution counter, the revolution counter of the motor driving the pump being graduated in output units.

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  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Grinding (AREA)
  • Crushing And Pulverization Processes (AREA)
US00197273A 1970-11-10 1971-11-10 Fine grinding device Expired - Lifetime US3770214A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7040365A FR2112800A5 (ja) 1970-11-10 1970-11-10
FR7040704A FR2114054A6 (ja) 1970-11-13 1970-11-13

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US3770214A true US3770214A (en) 1973-11-06

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US (1) US3770214A (ja)
JP (1) JPS4844852A (ja)
BE (1) BE775091A (ja)
CA (1) CA948170A (ja)
ES (1) ES204736Y (ja)
IT (1) IT942811B (ja)

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3960331A (en) * 1974-12-04 1976-06-01 Morehouse, Industries, Inc. Sandmill
DE2616155A1 (de) * 1976-04-13 1977-10-27 Karl Heinz Dipl Ing Meller Nassmahlvorrichtung
US4059232A (en) * 1974-12-12 1977-11-22 Draiswerke Gmbh Stirring or agitating mills
US4242002A (en) * 1978-05-22 1980-12-30 Shigekatsu Kawabata Agitator means for tower type abrasion mills
US4269808A (en) * 1979-08-09 1981-05-26 Seika Sangyo Co., Ltd. Method of simultaneously subjecting ores to pulverization and leaching or extraction
JPS59213458A (ja) * 1983-05-17 1984-12-03 三菱鉱業セメント株式会社 塔式粉砕機の運転制御方法
JPS59213451A (ja) * 1983-05-17 1984-12-03 三菱鉱業セメント株式会社 機械的抜き出し装置を設けた塔式粉砕機
DE2933001C2 (de) * 1979-08-14 1985-11-14 Japan Tower Mill Co. Ltd., Tokyo/Tokio Verfahren und Vorrichtung zum Feinzerkleinern und Laugen von uran- oder goldhaltigen Erzen
DE3623833A1 (de) * 1985-07-18 1987-01-22 Buehler Ag Geb Verfahren zum regeln und ruehrwerksmuehle zur durchfuehrung des verfahrens
US4850541A (en) * 1987-08-24 1989-07-25 Hagy John T Comminution apparatus
US4979686A (en) * 1989-10-03 1990-12-25 Union Process, Inc. High speed dry grinder
US5024387A (en) * 1989-07-25 1991-06-18 E. I. Du Pont De Nemours And Company On line control method to determine media fluidization in a media mill
US5080293A (en) * 1990-10-15 1992-01-14 Union Process, Inc. Continuous wet grinding system
US5114083A (en) * 1988-06-10 1992-05-19 Kubota, Ltd. Method and appatatus for pulverizing material
US5199656A (en) * 1990-10-15 1993-04-06 Union Process, Inc. Continuous wet grinding system
WO2001085344A1 (en) * 2000-04-26 2001-11-15 Elan Pharma International, Ltd. Apparatus for sanitary wet milling
WO2007020407A2 (en) * 2005-08-12 2007-02-22 Brian Sulaiman The milling system
US20110139913A1 (en) * 2009-12-11 2011-06-16 Flsmidth A/S Milling device
US20150128818A1 (en) * 2012-05-16 2015-05-14 Fcd Heat-Treating Equipment, In Particular For Roasting Food Products
US20220134347A1 (en) * 2020-01-15 2022-05-05 Xiamen Iso Standard Sand Co., Ltd. Grinding and shaping method using vertical grinding mill
US20220410170A1 (en) * 2020-01-24 2022-12-29 Thyssenkrupp Industrial Solutions Ag Stirred ball mill, stirred ball mill stirring unit, and method for comminuting milling material

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4656190A (en) * 1983-11-14 1987-04-07 Merck & Co., Inc. Indene derivatives and their use as PAF-antagonists
JPH0128827Y2 (ja) * 1987-01-12 1989-09-01

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1242445A (en) * 1916-01-06 1917-10-09 Martin H Ittner Apparatus for treating liquids with gases.
US1524605A (en) * 1923-11-15 1925-01-27 Grellet Collins Apparatus for treating paper stock
US2221348A (en) * 1937-03-15 1940-11-12 John R Hershey Apparatus for treating metallic strip
US2336798A (en) * 1941-12-20 1943-12-14 Roy A Nash Pulp beater
FR1359589A (fr) * 1962-06-13 1964-04-24 Spangenberg Maschf G Dispositif pour la pulvérisation et la dispersion continues de matières dans des liquides

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1242445A (en) * 1916-01-06 1917-10-09 Martin H Ittner Apparatus for treating liquids with gases.
US1524605A (en) * 1923-11-15 1925-01-27 Grellet Collins Apparatus for treating paper stock
US2221348A (en) * 1937-03-15 1940-11-12 John R Hershey Apparatus for treating metallic strip
US2336798A (en) * 1941-12-20 1943-12-14 Roy A Nash Pulp beater
FR1359589A (fr) * 1962-06-13 1964-04-24 Spangenberg Maschf G Dispositif pour la pulvérisation et la dispersion continues de matières dans des liquides

Cited By (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2293247A1 (fr) * 1974-12-04 1976-07-02 Morehouse Ind Inc Appareil de broyage au sable
US3960331A (en) * 1974-12-04 1976-06-01 Morehouse, Industries, Inc. Sandmill
US4059232A (en) * 1974-12-12 1977-11-22 Draiswerke Gmbh Stirring or agitating mills
DE2616155A1 (de) * 1976-04-13 1977-10-27 Karl Heinz Dipl Ing Meller Nassmahlvorrichtung
US4242002A (en) * 1978-05-22 1980-12-30 Shigekatsu Kawabata Agitator means for tower type abrasion mills
US4269808A (en) * 1979-08-09 1981-05-26 Seika Sangyo Co., Ltd. Method of simultaneously subjecting ores to pulverization and leaching or extraction
DE2933001C2 (de) * 1979-08-14 1985-11-14 Japan Tower Mill Co. Ltd., Tokyo/Tokio Verfahren und Vorrichtung zum Feinzerkleinern und Laugen von uran- oder goldhaltigen Erzen
JPS59213458A (ja) * 1983-05-17 1984-12-03 三菱鉱業セメント株式会社 塔式粉砕機の運転制御方法
JPS59213451A (ja) * 1983-05-17 1984-12-03 三菱鉱業セメント株式会社 機械的抜き出し装置を設けた塔式粉砕機
JPS6331260B2 (ja) * 1983-05-17 1988-06-23 Mitsubishi Mining & Cement Co
JPS6363028B2 (ja) * 1983-05-17 1988-12-06
DE3623833A1 (de) * 1985-07-18 1987-01-22 Buehler Ag Geb Verfahren zum regeln und ruehrwerksmuehle zur durchfuehrung des verfahrens
US4850541A (en) * 1987-08-24 1989-07-25 Hagy John T Comminution apparatus
US5114083A (en) * 1988-06-10 1992-05-19 Kubota, Ltd. Method and appatatus for pulverizing material
US5024387A (en) * 1989-07-25 1991-06-18 E. I. Du Pont De Nemours And Company On line control method to determine media fluidization in a media mill
AU620301B2 (en) * 1989-10-03 1992-02-13 Union Process, Inc. High speed dry grinder
US4979686A (en) * 1989-10-03 1990-12-25 Union Process, Inc. High speed dry grinder
DE4015925C2 (de) * 1989-10-03 2002-05-16 Union Process Inc Kontinuierliche Trockenmühle
US5080293A (en) * 1990-10-15 1992-01-14 Union Process, Inc. Continuous wet grinding system
US5199656A (en) * 1990-10-15 1993-04-06 Union Process, Inc. Continuous wet grinding system
WO2001085344A1 (en) * 2000-04-26 2001-11-15 Elan Pharma International, Ltd. Apparatus for sanitary wet milling
US20040026546A1 (en) * 2000-04-26 2004-02-12 Czekai David A Apparatus for sanitary wet milling
US20080251617A1 (en) * 2005-08-12 2008-10-16 Brian Sulaiman Milling System
WO2007020407A3 (en) * 2005-08-12 2007-07-12 Brian Sulaiman The milling system
WO2007020407A2 (en) * 2005-08-12 2007-02-22 Brian Sulaiman The milling system
US7857247B2 (en) 2005-08-12 2010-12-28 Brian Sulaiman Milling system
CN101277766B (zh) * 2005-08-12 2011-09-14 布赖恩·苏莱曼 碾磨系统
US20110139913A1 (en) * 2009-12-11 2011-06-16 Flsmidth A/S Milling device
WO2011070546A3 (en) * 2009-12-11 2011-08-11 Flsmidth A/S Milling device
US8091817B2 (en) 2009-12-11 2012-01-10 Flsmidth A/S Milling device
US20150128818A1 (en) * 2012-05-16 2015-05-14 Fcd Heat-Treating Equipment, In Particular For Roasting Food Products
US20220134347A1 (en) * 2020-01-15 2022-05-05 Xiamen Iso Standard Sand Co., Ltd. Grinding and shaping method using vertical grinding mill
US20220410170A1 (en) * 2020-01-24 2022-12-29 Thyssenkrupp Industrial Solutions Ag Stirred ball mill, stirred ball mill stirring unit, and method for comminuting milling material

Also Published As

Publication number Publication date
CA948170A (en) 1974-05-28
ES204736U (es) 1976-01-16
ES204736Y (es) 1976-05-01
BE775091A (fr) 1972-03-01
JPS4844852A (ja) 1973-06-27
IT942811B (it) 1973-04-02

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