EP0060046A1 - Appareil mélangeur statique - Google Patents

Appareil mélangeur statique Download PDF

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Publication number
EP0060046A1
EP0060046A1 EP82300882A EP82300882A EP0060046A1 EP 0060046 A1 EP0060046 A1 EP 0060046A1 EP 82300882 A EP82300882 A EP 82300882A EP 82300882 A EP82300882 A EP 82300882A EP 0060046 A1 EP0060046 A1 EP 0060046A1
Authority
EP
European Patent Office
Prior art keywords
mixer
partition walls
particles
compartment
wall
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP82300882A
Other languages
German (de)
English (en)
Inventor
Peter M. Wisneski
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Gulf Oil Corp
Original Assignee
Gulf Oil Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US06/250,988 external-priority patent/US4360044A/en
Priority claimed from US06/268,957 external-priority patent/US4385840A/en
Application filed by Gulf Oil Corp filed Critical Gulf Oil Corp
Publication of EP0060046A1 publication Critical patent/EP0060046A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D88/00—Large containers
    • B65D88/26—Hoppers, i.e. containers having funnel-shaped discharge sections
    • B65D88/28—Construction or shape of discharge section
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/80—Falling particle mixers, e.g. with repeated agitation along a vertical axis
    • B01F25/82—Falling particle mixers, e.g. with repeated agitation along a vertical axis uniting flows of material taken from different parts of a receptacle or from a set of different receptacles
    • B01F25/822—Falling particle mixers, e.g. with repeated agitation along a vertical axis uniting flows of material taken from different parts of a receptacle or from a set of different receptacles the receptacle being divided into compartments for receiving or storing the different components
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/80—Falling particle mixers, e.g. with repeated agitation along a vertical axis
    • B01F25/84—Falling-particle mixers comprising superimposed receptacles, the material flowing from one to the other, e.g. of the sandglass type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F33/00—Other mixers; Mixing plants; Combinations of mixers
    • B01F33/26—Mixers with an endless belt for transport of the material, e.g. in layers or with mixing means above or at the end of the belt

Definitions

  • particulate materials such as thermoplastic polymers, e.g., high pressure polyethylene
  • melt index which falls outside of product specifications.
  • the manufacturer will blend a product lot having an undesirably high melt index with a product lot having an undesirably low melt index.
  • the resulting mixed lot will have a melt index within specifications.
  • Such lots customarily are mixed in rotary mixers and/or remelted and extruded. Such reprocessing entails high labor costs and, in addition, high energy costs when an extrusion step is employed.
  • additives such as slip agents, antiblock agents, and the like
  • Such processes are burdened with high labor and energy costs.
  • the present invention provides apparatus for blending batches of particulate material that are compositionally heterogeneous into batches of material that are compositionally uniform.
  • the apparatus consists of two or more cylindrical static mixers, each mixer being substantially identical in volumetric capacity and construction.
  • Each mixer contains six or more vertically aligned partition walls that extend radially from the midoint of the mixer to the wall to divide the mixer into at least six storage compartments of substantially equal.volumetric capacity.
  • the vertical partition walls differ in height in a regular descending order so that as material is charged to and fills one compartment, it overflows the shorter wall to fill the adjacent compartment.
  • One embodiment of the invention includes means for feeding particulate material successively through each of the static mixers.
  • a second embodiment'of the invention includes means for simultaneously discharging lots of particulate material from each of the mixers at a substantially uniform rate into a common conveying means.
  • the static mixer has a principal section 10 of cylindrical shape which terminates in a bottom section 12 of conical shape to provide ready gravity flow of particles from the discharge port 14 of the mixer.
  • a gate valve 15 is provided to discharge the contents from the mixer.
  • the top 16 of the mixer is provided with a product entry port 18, a vent port 20, and an access port 22 to provide entry into the mixer to make inspections and/or repairs.
  • Suitable threaded covers 18a, 20a, and 22a are provided to seal ports 18, 20, and 22 when the mixer is not in use.
  • the covers 20a and 22a preferably have a transparent section for visual inspection to determine the level of the contents in various sections of the mixer.
  • the interior of the mixer is provided with a series of 6 vertical partition walls 31, 32, 33, 34, 35, and 36.
  • the vertical interior edge of each partition wall fits tightly into channels provided in a centrally positioned vrtical rod-like member 37.
  • the partition walls extend radially from member 37 and fit tightly against the inner wall of the mixer to subdivide the mixer into a series of 6 pie-shaped compartments a, b, c, d, e, and f.
  • the cross sectional area of each compartment is fixed by the angle defined by its 2 partition walls; these angles being defined as, respectively, d (31, 32) for compartment a, ⁇ (32, 33) for compartment b, and so forth.
  • each of the ⁇ angles is the same and is 60°.
  • each partition wall 31, 32, 33, 34, 35, and 36 are cut to lie in a common plane (normal to the plane of gravity) which is positioned as close as practical to the discharge port 14.
  • This construction prevents any significant upward flow from any filled compartment into any unfilled compartment. In additon, this construction assures that the particles from each compartment will be discharged at a substantially uniform volumetric rate when valve 15 is opened.
  • each of partition wall 31 through 36 is identical except that each differs in height from the others.
  • the order of the heights is such that 31 > 32 > 33 > 34 > 35 36.
  • the partition walls are actually higher than shown in Fig. 1. They are shown in reduced height so that the differences in height are seen more easily in the perspective view shown.
  • the effective depth, and thus the volumetric capacity, of each compartment a, b, c, d, e, and f is controlled by the height of its shorter wall. As the angles are the same for each compartment, the respective volumetric capacity of the compartments is a > b > c > d > e > f.
  • the partition walls should be arranged so that ⁇ (36, 31)> o ⁇ (35, 36)> ⁇ (34, 35)> ⁇ (33, 34)> ⁇ (32, 33)> ⁇ (31, 32).
  • the precise differences in the sizes of angles will be dependent upon the respective heights of the partition walls and can be readily calculated by those skilled in the art.
  • the apparatus of the invention shown in Fig. 2 consists of two static mixers in vertical alignment.
  • the mixers are arranged so that a conduit 40 feeds particles discharged from the top mixer into the bottom mixer.
  • the two mixers are identical in size and construction.
  • each mixer is arranged so that particulate matter charged to the mixer from a fill tube 42 flows directly into compartment a.
  • compartment a When compartment a is filled, additional material charged to the mixer overflows partition wall 32 and falls into compartment b.
  • partition walls 33, 34, 35, and 36 As the filling action is continued, particulate matter successively and sequentially overflows partition walls 33, 34, 35, and 36 to fill compartments c, d, e, and f.
  • the respective heights of partition walls 31, 32, 33, 34, 35, and 36 will be fixed to assure that the compartments of the mixer are filled in this order.
  • the partition wall 31 will extend to the top of the mixer to prevent any overflow of material from compartment a into compartment f.
  • the entry port 18 of the bottom mixer also is positioned so that the particles discharged from the top mixer through conduit 40 and fill tube 42 flow directly into compartment a and successively fill compartment a, b, c, d, e, and f. as previously described.
  • the apparatus shown in Fig. 6 is similar to that shown in Fig. 2, except that the two static mixers are positioned in horizontal alignment rather than in vertical alignment.
  • the construction of the mixers and their operation are essentially similar to that shown in Fig. 2, except for the means included to transfer particulate matter from the first mixer to the second mixer.
  • the product discharged from the first mixer into conduit 40 flows into a transfer line 44. Air admitted into line 44 through valve 46 blows the discharged particulate matter from the first mixer through line 44 into the second mixer.
  • a simple gate valve in the first mixer it is desirable to employ a rotary feeder valve to provide a positive discharge of product when air pressure is applied to line 44.
  • Fig. 4 illustrates a modification of the mixer of Fig. 1 in which like parts bear identifying numbers 100 units higher than the corresponding parts shown in Fig. 1.
  • Partition wall 131 has the same shape as corresponding wall 31 shown in Fig. 1 and extends to the top of the mixer.
  • the top edge of each of the other partition walls 132, 133, 134, 135, and 136 is cut so that it either slopes from its midsection (i.e., the section that fits in member 137) to its wall section (i.e., the section that touches the inner mixer wall) or from its wall section to its midsection.
  • the top edges' of partition walls 133 and 135 slope from their midsections to their wall sections.
  • the top surfaces of partition walls 132, 135, and 136 slope in the opposite direction, i.e., from their wall sections to their midsections. Normal lines drawn from the point at which partition walls 133 and 135 touch the inner mixer wall to rod member 137 define acute angles B. Similarly, normal lines drawn from the point at which the partition walls 132, 134, and 136 touch rod member 137 to the inner mixer wall define acute angles B. Typically, angles B are approximately 15°. If the partition walls were rotated counterclockwise, the top surfaces of the partition walls would show the cascading profile shown in Fig. 5. This construction provides easier overflow of particles from one compartment to the next compartment.
  • the specific heights of the partition walls in the mixers will be somewhat dependent upon the flow characteristics of the materials to be blended in the mixers.
  • the flow characteristics of particulate materials are proportional to their angles of repose. For many materials, such angles are known and reported in the literature. Where such angles are not known, they can be readily determined by known methods.
  • the required differentials in height between adjacent partition walls will be directly proportional to the angles of repose of the materials to be blended.
  • the highest of the partition walls should extend to the top of the mixer. This will prevent any flow of charged material to the last of the concentrically arranged storage compartments.
  • Each of the remaining partition walls should have its height reduced by the amount required to provide ready overflow from one filled storage compartment to the adjacent unfilled compartment.
  • Fig. 2 shows the two mixers in direct vertical alignment.
  • the arrangement has a minimum space requirement, but requires that the transfer conduit 40 to be positioned at an angle from the field of gravity.
  • the lower mixer can be offset somewhat from the first mixer to provide a direct drop from the discharge port of the top mixer to the entry port of the bottom mixer.
  • each of the mixers should be completely emptied before the material to be blended is charged thereto.
  • the volume of each batch of particulate material to be used should be, to the extent practical, precisely equal to the volumetric storage capacity of the several storage compartments. * It will be recognized that some free space will remain above each of the storage compartments. If the batch to be blended is larger than the storage capacity of the several compartments, *In subsequent discussions, the total capacity of the several compartments will be referred to as the mixer's "effective capacity." the excess particulate material will occupy a portion of the designed free space provided in the mixer. As the content of each of the individual storage compartments is discharged at the same rate, any excess material initially occupying the designed free space will not be mixed with any of the material stored in the storage compartments.
  • the batch size should be selected to completely fill 2, 3, or more compartments of the mixers. Such undersized batches, in a single pass through the apparatus, will not be as well blended as full size batches. If a more homogeneous blend is required, such undersized batches should be passed through the apparatus two or more times.
  • each batch will be concentrated in one or more compartments in the top mixer.
  • the contents When the contents are discharged from the top mixer, it will be well blended with the contents of the other compartments.
  • the same mixing action takes place in the lower mixer(s) and it is readily seen that the final lot of material discharged from the bottommost mixer will be homogeneously blended.
  • the apparatus is well suited to prepare blends of an additive with particulate polymer at low cost.
  • a typical blend that can be prepared is polyethylene containing a slip agent such as erucamide.
  • the erucamide will be dispersed in polyethylene pellets at a concentration significantly higher than desired in the resin to be delivered to the customer.
  • the additive concentration will be six times the concentration desired in the final product.
  • This concentrate will be prepared by any desired method as by compounding in an estruder. A lot of this polymer concentrate having a volume equivalent to one-sixth of the mixer's effective capacity will be charged to the top mixer. When employing the apparatus illustrated in Figs. 1 and 2, the concentrate will completely fill compartment a.
  • a second lot of the polymer containing no erucamide, having a volume equivalent to five-sixths of the mixer's effective capacity then will be charged to the top mixer.
  • the additive-free resin will completely fill compartments b, c, d, e, and f.
  • valve 15 of the top mixer is opened, the contents of each compartment a, b, c, d, e, and f are discharged at essentially equivalent volumetric rates.
  • the particles flowing through conduit 40 into the second mixer will contain, on an average, equal volumes of particles from each compartment of the top mixer.
  • each compartment will be filled with a mixture containing on a volume basis, one part of the concentrate and five parts of the additive-free polymer. Any deviations from the desired 1:5 ratio will be small.
  • the final product will contain 1 particle of concentrate for each '5 particles of additive-free polymer.
  • a typical series of polymer products of this type are film grade polymers containing a slip agent such as erucamide and a specific colorant for each polymer product.
  • a first polymer master batch containing erucamide will be prepared as previously described.
  • a master batch also will be prepared for each polymer product and will contain the colorant at a concentration substantially six times the concentration desired in the finished product.
  • the top mixer will be first charged with one of the master batches and then the second master batch.
  • This charging order will fill compartment a with one master batch and compartment b with the second master batch.
  • the mixer then is filled with uncompounded or additive-free polymer.
  • the valve 15 of the top mixer is open, the contents of each compartment a, b, c, d, e, and f are discharged at essentially equivalent volumetric rates.
  • the particles flowing through conduit 40 into the second mixer will contain, on an average, one volume part of the first master batch, one volume part of the second master batch, and four volume parts of the uncompounded or additive-free polymer.
  • the first essential step is to prepare a polymer master batch of the desired additive(s) at a concentration such that the master batch will be included in the final batch in a volumetric proportion such that the master batch will fill one or an even number of compartments of the top mixer.
  • the master batch containing the additive should be charged to the first mixer in such a manner as to be contained entirely within one or an even number of the compartments of the mixer. This is done most conveniently by charging the master batch to the mixer prior to charging the uncompounded or additive-free polymer to the mixer.
  • Another application of the apparatus of the invention is to increase the homogeneity of a batch of polymer particles which for any reason are more heterogeneous in composition than desired. Again, in the manufacture of polyethylene by high pressure autoclave process, it is sometimes noted that undesirably wide fluctuations of melt index are.present in the product exiting the reactor. By passing such batches of polymer through the apparatus of the invention, the various segments of the initial batch become blended so that the entire batch of polymer discharged from the bottommost mixer is more homogeneous with respect to melt index.
  • Fig. 7 shows five (5) mixers 1, 2, 3, 4, and 5 arranged in horizontal alignment. Each mixer is identical in size and construction. A product delivery line 50 fitted with valves 52 feeds particulate polymer to the mixers via lines 54. As subsequently described, each mixer is filled in sequence. At the time of discharge, valves 15 of each of mixers 1, 2, 3, 4, and 5 are opened simultaneously so as to discharge the particulate polymer onto an endless conveyor belt 60.
  • Fig. 8 illustrates that the product from the several mixers forms layers on the belt 60 with layer a being the product discharged from mixer 1, layer b being the product discharged from mixer 2, and so forth. The particulate product is discharged from belt 60 to a packaging station not shown.
  • each of mixers 1, 2, 3, 4, and 5 will be empty at the beginning of the'operational cycle.
  • Particulate polymer such as pelleted polyethylene
  • This material begins to fill compartment a of mixer 1.
  • compartment a is filled, the polymer particles flowing into mixer I overflow wall 32 and begin filling compartment b. This action is continued until each of the compartments of mixer 1 is filled.
  • the flow of the particulate polymer to mixer 1 will be measured and first valve 52 will be closed at the appropriate time so that the volume of particulate polymer charged will be, to the extent practical, precisely equal the volumetric storage capacity of the several storage compartments of the mixer. It will be recognized that some free space will remain above each of the storage compartments of the mixer. This is desirable for reasons discussed supra.
  • mixers 2, 3, 4, and 5 will be filled in sequence in the same manner.
  • the conveyor belt 60 is started and the valves 15 of each of mixers 1, 2, 3, 4, and 5 are opened simultaneously and product from each mixer is discharged through lines 56.
  • the product being discharged from each mixer will contain an equal volume fraction from each of storage compartments a, b , c, d, e, and f. It is thus seen that the product being discharged, by reason of containing an equal volume fraction from each of the storage compartments, blends particulate polymer produced over a significant time period and tends to even out periodic variations in product properties such as melt index.
  • the particulate polymer tends to form layers a, b, c, d, and e on conveyor belt 60.
  • Each layer of course is homogeneous by reason of being a blend formed by mixing material from the six storage compartments of each mixer.
  • the material in each of the layers a, b, c, d, and e becomes intimately mixed.
  • the material that is packaged and delivered to the user is made up of substantially equal proportions of material from each of the 30 storage compartments in the five mixers illustrated. Accordingly, the periodic variations in polymer properties are evened out.
  • the apparatus of Fig. 7 can be modified by employing a pneumatic conveying system in lieu of the conveyor belt shown.
  • lines 56 are connected to a large capacity pneumatic conveying line.
  • Gate valves 15 are replaced with rotary feeders which function as discharge valves.
  • the apparatus and method of the invention are particularly well suited for the manufacture of large batches of particular polymers.
  • a series of five bins each of which contains an effective volumetric capacity of about 6,500 ft 3 (184 m 3 )
  • it is possible to prepare single uniform batches of one million pounds (472,000 kilos) of polyethylene.
  • These figures are based upon the consideration that the density of polyethylene pellets is about 32 1bs/ft 3 (513 kilos/m 3 ).
  • Storage bins of this capacity are easily manufactured.
  • the bins should be constructed to discharge product at a rate of at lease about 650 ft 3 /hour (18.4 m 3 /hour).

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
EP82300882A 1981-03-02 1982-02-22 Appareil mélangeur statique Withdrawn EP0060046A1 (fr)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
US23981581A 1981-03-02 1981-03-02
US239815 1981-03-02
US06/250,988 US4360044A (en) 1981-04-03 1981-04-03 Polymer mixing apparatus
US250988 1981-04-03
US06/268,957 US4385840A (en) 1981-03-02 1981-06-01 Mixing apparatus
US268957 2002-10-11

Publications (1)

Publication Number Publication Date
EP0060046A1 true EP0060046A1 (fr) 1982-09-15

Family

ID=27399280

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82300882A Withdrawn EP0060046A1 (fr) 1981-03-02 1982-02-22 Appareil mélangeur statique

Country Status (2)

Country Link
EP (1) EP0060046A1 (fr)
CA (1) CA1170649A (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2558387A1 (fr) * 1984-01-19 1985-07-26 Recycloplast Ag Procede de melange de matieres pouvant s'ecouler comme des matieres en vrac, en un rapport de melange reglable, en tant que partie d'un procede de traitement de ces matieres, et agencement pour la mise en oeuvre de ce procede
GB2254798A (en) * 1991-04-19 1992-10-21 Waeschle Maschf Gmbh Mixing silo
EP0521337A1 (fr) * 1991-06-29 1993-01-07 FRIEDRICH THEYSOHN GmbH Procédé de mélange et dispositif de mélange attaché à une extrudeuse pour des matières primaires et des composants en petite quantité en particulier des additions colorantes
DE10332233A1 (de) * 2003-07-16 2005-02-24 Motan Materials Handling Gmbh Mischsilo
KR101140979B1 (ko) * 2008-03-26 2012-05-03 타이코 일렉트로닉스 코포레이션 로우 프로파일 단자 위치 확정 부재를 구비하는 커넥터 조립체
EP2497565A1 (fr) 2011-03-11 2012-09-12 Bayer MaterialScience AG Silo de mélange
EP3170737A4 (fr) * 2014-07-14 2018-03-21 NK Co. Ltd. Dispositif de stockage et de dissolution de produit chimique pour la désinfection d'eau de ballast
CN105857967B (zh) * 2016-05-16 2019-07-23 平原县三兴饲料厂 一种防分级容器及防分级饲料仓和防分级车载散料罐

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3414164A (en) * 1967-03-06 1968-12-03 Electric Reduction Co Blending apparatus for solids
US3462130A (en) * 1964-04-30 1969-08-19 Fuller Co Method and apparatus for blending bulk solids
US3814386A (en) * 1968-11-13 1974-06-04 Plastic Materials Syst Inc Method for vibratory blending of fluid particulate materials
DE2417990A1 (de) * 1973-04-12 1974-10-24 Aquitaine Total Organico Courb Verfahren zur herstellung von zubereitungen auf der grundlage von polyvinylchlorid- oder vinylchlorid-mischpolymerisatpulvern
DE2645616A1 (de) * 1975-10-09 1977-04-21 Ici Ltd Vorrichtung und verfahren zur mischung von teilchenfoermigen stoffen
DE2659405B2 (de) * 1975-11-19 1980-05-29 Phillips Petroleum Co Verfahren zum Einbringen von Zusatzstoffen in ein festes Polymeres

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3462130A (en) * 1964-04-30 1969-08-19 Fuller Co Method and apparatus for blending bulk solids
US3414164A (en) * 1967-03-06 1968-12-03 Electric Reduction Co Blending apparatus for solids
US3814386A (en) * 1968-11-13 1974-06-04 Plastic Materials Syst Inc Method for vibratory blending of fluid particulate materials
DE2417990A1 (de) * 1973-04-12 1974-10-24 Aquitaine Total Organico Courb Verfahren zur herstellung von zubereitungen auf der grundlage von polyvinylchlorid- oder vinylchlorid-mischpolymerisatpulvern
DE2645616A1 (de) * 1975-10-09 1977-04-21 Ici Ltd Vorrichtung und verfahren zur mischung von teilchenfoermigen stoffen
DE2659405B2 (de) * 1975-11-19 1980-05-29 Phillips Petroleum Co Verfahren zum Einbringen von Zusatzstoffen in ein festes Polymeres

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2558387A1 (fr) * 1984-01-19 1985-07-26 Recycloplast Ag Procede de melange de matieres pouvant s'ecouler comme des matieres en vrac, en un rapport de melange reglable, en tant que partie d'un procede de traitement de ces matieres, et agencement pour la mise en oeuvre de ce procede
GB2254798A (en) * 1991-04-19 1992-10-21 Waeschle Maschf Gmbh Mixing silo
DE4112884A1 (de) * 1991-04-19 1992-10-22 Waeschle Maschf Gmbh Mischsilo
US5248197A (en) * 1991-04-19 1993-09-28 Waeschle Maschinenfabrik Gmbh Blending silo with compartmentalized funnel
GB2254798B (en) * 1991-04-19 1994-11-16 Waeschle Maschf Gmbh A mixing silo
EP0521337A1 (fr) * 1991-06-29 1993-01-07 FRIEDRICH THEYSOHN GmbH Procédé de mélange et dispositif de mélange attaché à une extrudeuse pour des matières primaires et des composants en petite quantité en particulier des additions colorantes
DE10332233A1 (de) * 2003-07-16 2005-02-24 Motan Materials Handling Gmbh Mischsilo
DE10332233B4 (de) * 2003-07-16 2006-04-20 Motan Materials Handling Gmbh Mischsilo
KR101140979B1 (ko) * 2008-03-26 2012-05-03 타이코 일렉트로닉스 코포레이션 로우 프로파일 단자 위치 확정 부재를 구비하는 커넥터 조립체
EP2497565A1 (fr) 2011-03-11 2012-09-12 Bayer MaterialScience AG Silo de mélange
US9028132B2 (en) 2011-03-11 2015-05-12 Bayer Materialscience Ag Mixing silo
EP3170737A4 (fr) * 2014-07-14 2018-03-21 NK Co. Ltd. Dispositif de stockage et de dissolution de produit chimique pour la désinfection d'eau de ballast
CN105857967B (zh) * 2016-05-16 2019-07-23 平原县三兴饲料厂 一种防分级容器及防分级饲料仓和防分级车载散料罐

Also Published As

Publication number Publication date
CA1170649A (fr) 1984-07-10

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