WO2008122860A1 - Procédé de stockage temporaire de mélanges de poudres et silos de stockage pour la mise en oeuvre dudit procédé - Google Patents

Procédé de stockage temporaire de mélanges de poudres et silos de stockage pour la mise en oeuvre dudit procédé Download PDF

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Publication number
WO2008122860A1
WO2008122860A1 PCT/IB2008/000795 IB2008000795W WO2008122860A1 WO 2008122860 A1 WO2008122860 A1 WO 2008122860A1 IB 2008000795 W IB2008000795 W IB 2008000795W WO 2008122860 A1 WO2008122860 A1 WO 2008122860A1
Authority
WO
WIPO (PCT)
Prior art keywords
powder mixture
storage silo
stage
silo
powder
Prior art date
Application number
PCT/IB2008/000795
Other languages
English (en)
Inventor
Vainer Marchesini
Massimo Passerini
Lamberto Vincenzi
Original Assignee
Wam S.P.A.
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
Application filed by Wam S.P.A. filed Critical Wam S.P.A.
Priority to CN2008800155664A priority Critical patent/CN101678292B/zh
Publication of WO2008122860A1 publication Critical patent/WO2008122860A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28C7/00—Controlling the operation of apparatus for producing mixtures of clay or cement with other substances; Supplying or proportioning the ingredients for mixing clay or cement with other substances; Discharging the mixture
    • B28C7/0046—Storage or weighing apparatus for supplying ingredients
    • B28C7/0053—Storage containers, e.g. hoppers, silos, bins
    • B28C7/0076—Parts or details thereof, e.g. opening, closing or unloading means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/60—Mixing solids with solids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
    • B01F27/92—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with helices or screws
    • B01F27/921—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with helices or screws with helices centrally mounted in the receptacle
    • B01F27/9211—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with helices or screws with helices centrally mounted in the receptacle the helices being surrounded by a guiding tube
    • 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
    • B65D88/54—Large containers characterised by means facilitating filling or emptying
    • B65D88/64—Large containers characterised by means facilitating filling or emptying preventing bridge formation
    • 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
    • B65D2588/00—Large container
    • B65D2588/54—Large container characterised by means facilitating filling or emptying
    • B65D2588/64—Large container characterised by means facilitating filling or emptying preventing bridge formation
    • B65D2588/645—Large container characterised by means facilitating filling or emptying preventing bridge formation through walls being deformable
    • 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
    • B65D88/30—Hoppers, i.e. containers having funnel-shaped discharge sections specially adapted to facilitate transportation from one utilisation site to another

Definitions

  • the invention relates to a method for temporarily storing powder mixtures and a storage silo for actuating the method.
  • the invention relates to storage of pre-mixed materials for building, for example mortar and cement mixes.
  • Prepared materials of this type are usually stored internally of storage silos, generally of considerable size. These storage silos comprise a lower hopper, usually truncoconical, on a bottom of which a discharge mouth opens for extraction of the stored material.
  • a disadvantage of the storage of powder mixes internally of the above- described type of silo relates to the risk of stratification of the various powders of different granulometry constituting the mixture. The selective depositing of the powders might cause substantial alterations in the material extracted from the discharge mouth with respect to the original composition thereof. In practice, considering the case of storage of a pre- mixed preparation for mortar, it can happen that the material extracted contains a percentage of bond which is not sufficient for a direct use thereof.
  • a further drawback normally connected with storage of powder material internally of silos of the present type relates to the extraction of material by force of gravity.
  • the descent of the material internally of the lower hopper can be obstructed by the formation of static structures on the part of the material itself.
  • These structures which are like architectural arches, originate when the loose material becomes arranged above the discharge mouth, creating a statically-balanced vaulted conformation.
  • the formation of these vaults have to be prevented from forming up in the material; or at least they have to be broken up.
  • the simplest and most widely-used thereof is percussion on the external walls of the silo to generate pressure waves which propagate towards the inside of the structure. This solution, however, apart from requiring frequent maintenance of the silo, is not particularly effective and the times required for the extraction of the material in the presence of high moisture levels can be very long.
  • the aim of the present invention is to provide a method for temporary storage of powder mixtures, and a relative storage silo therefor, which can guarantee homogeneous distribution of the various powders constituting the mixture extracted at the end of the storage period.
  • An advantage of the method and relative apparatus described relates to the ease of extraction of the mixture of powders stored in the silo, as the lasting formation of vaults and bridges is excluded. Disclosure of Invention
  • figure 1 is a view in vertical elevation of a storage silo of the present invention, partially sectioned;
  • figure 2 is a section of an upper part of a storage silo during a stage of introduction of the powder mixture internal of the silo according to the method of the invention;
  • figure 3 is a second of an upper part of a storage silo during a stage of movement of the powder mixture internal of the silo according to the method of the invention;
  • figure 4 is an exploded perspective view of a lower part of a silo of the present invention;
  • figure 5 is a section of the discharge mouth of a silo of the present invention, at a formation of a vaulted arch by a build-up of the stored powder mixture;
  • figure 6 is a section view of the discharge mouth of a silo at a stage of extraction of the powder mixture
  • a storage silo 1 for actuating the method for temporarily storing powder mixtures of the present invention.
  • the storage silo 1 must be considered in the normal operating configuration thereof, i.e. vertically assembled with the discharge mouth facing downwards.
  • the operating configuration is shown in figure 1.
  • the storage silo 1 comprises a main storage chamber 10 which inferiorly communicates with a hopper 11 provided with a discharge mouth 3.
  • the storage chamber 10 is preferably cylindrical, with an internal diameter which is equal to the maximum internal diameter of the hopper 11, preferably truncoconical, with which it communicates.
  • the storage silo 1 further comprises an opening 6 for the introduction of the powder mixtures to be stored in the main storage chamber 10.
  • the storage silo 1 of the present invention further comprises a vertical screw 2, rotatably associated to the longitudinal axis x of the silo and predisposed for moving the powder mixtures stored internally thereof.
  • the screw 2 comprises a propeller 16 which couples to a central shaft 13.
  • the central shaft 13 extends along the longitudinal axis x of the storage silo 1, starting from the top of the silo down to in proximity of the discharge mouth 3.
  • the central shaft 13 is advantageously connected at an upper end 13b thereof with the top of the storage silo 1.
  • the central shaft 13 is operatively connected to a motor 14.
  • the motor 14 is preferably arranged outside the storage silo 1 and is connected via a gear reducer 15 to the upper end 13b of the central shaft 13.
  • the central shaft 13 is preferably made of a metal material.
  • the propeller 16 is associated to the external surface of a hollow cylindrical element predisposed to couple axially with at least a part of the extension of the central shaft 13.
  • the propeller 16 and the hollow cylindrical element on which it is fashioned are advantageously realised in a deformable plastic material, preferably a techno-polymer.
  • the propeller 16 comprises an initial tract 16a at the lower end of the central shaft 13, and a final tract 16b which is interrupted before the upper end 13b of the shaft.
  • the storage silo 1 of the invention advantageously comprises internally thereof a vertical central channel 7, provided with a lower mouth 7a and an upper mouth 7b.
  • the screw 2 is arranged inside the central channel 7; the function of the central channel 7 is to serve as a guide for the powder mixtures moved by the screw 2.
  • the central channel 7, arranged coaxially to the screw 2, is constituted by a simple cylindrical tube.
  • the internal diameter of the central channel 7 is substantially coincident, or just above, the maximum diameter of the propeller 16.
  • the central channel 7 covers the screw 2 for at least part of the longitudinal extension thereof; the central canal 7 is advantageously interrupted nearby the initial tract 16a and the final tract 16b of the propeller 16.
  • the storage silo 1 comprises a spoke-type centring device 17 associated to the screw 2 in the operating configuration of the silo.
  • the spoke-type centring device 17 enables easy mounting of the screw 2 and the various vertical components associated thereto (central channel 7, central shaft 13, propeller 16).
  • the centring device comprises a plurality of spokes 17a of a same length, radially departing from a central sleeve 17b predisposed to be crossed by the screw 2.
  • the spokes are preferably angularly equi-spaced.
  • the ends of the spokes 17a are predisposed to be constrained to the internal walls of the storage silo 1. In the described preferred embodiment, the spokes 17a are three in number.
  • the free ends thereof are shaped such as to be constrained restingly on the inclined internal walls of the truncoconical hopper 11.
  • the central sleeve 17b is externally placed over the central channel 7, with respect to which it is slidingly constrained.
  • the central sleeve 17b is connected by means of a compression spring 17c to a fixed sleeve 17d, rigidly constrained about the central channel 7 above the central sleeve 17b.
  • the storage silo 1 of the present invention comprises a lower deflector 5, rotatably associated to the longitudinal axis x of the silo itself in proximity of the upper opening 7b of the central channel 7.
  • the element is predisposed to project at least a part of the powder mixture raised by the screw 2 along the central channel 7 distancing from the longitudinal axis x of the storage silo 1 such as to redistribute it homogeneously above the whole free surface of the powder mixture stored internally of the storage silo 1.
  • the lower deflector 5 is advantageously rigidly constrained to the central shaft 13, and it is thus solid in rotation with the central shaft 13. As previously described, as the upper opening 7b of the central channel 7 near the final tract 16b of the propeller 16, the lower deflector 5 is arranged, with respect to the central shaft 13, immediately above the final tract 16b of the propeller.
  • the lower deflector 5 has a substantially truncoconical shape, with the larger base turned upward and the smaller base equal to the diameter of the cylindrical surface on which the propeller develops 16.
  • the tapered surface of the lower deflector 5 can comprise, or not, reliefs for facilitating the projection of the powder mixture in a distancing direction from longitudinal axis x.
  • the tapered surface can further exhibit a slight concavity.
  • the upper deflector 4 is rigidly constrained to the central shaft 13 and is thus solid in rotation with respect thereto.
  • the storage silo 1 comprises means for projecting a powder mixture introduced into the silo through the opening 6 in the direction of an upper deflector 4 predisposed to deviate at least a part of the powder mixture at the longitudinal axis of the storage silo 1, such that the free surface of the powder mixture deposited is convex.
  • the upper deflector 4 is rotatably associated to the longitudinal axis x of the storage silo 1, and exhibits a concave lower surface 4a.
  • the upper deflector 4 is umbrella-shaped and axialsymmetric, with the concavity, as mentioned, facing downwards.
  • the lower surface 4a thereof can comprise, or not, reliefs for facilitating the projection of the powder mixture in a distancing direction from the longitudinal axis x.
  • the upper deflector 4 is arranged on the central shaft 13 in proximity of the upper end thereof, above the lower deflector 5.
  • the means for projecting the powder mixture in the direction of the upper deflector 4 comprise a directed tube 8, associated at one of the ends thereof at the opening, the other end being arranged in proximity of the upper deflector 4 and facing towards the lower surface 4a thereof.
  • the end of the tube associated to the opening 6 is arranged below the other end.
  • the internal surface of the hopper 11 is at least partially defined by at least an elastically deformable wall 12.
  • the elastically deformable wall 12 is preferably arranged in proximity of the discharge mouth 3 of the silo.
  • the wall is predisposed to facilitate exit of the powder mixture from the discharge mouth 3, and does so by transmitting an elastic pulse to the powder mixture adjacent thereto at an elastic return of the elastically deformable wall 12, originating from a reduction in the powder load of the mixture bearing thereon, due to a raising along the central channel 7 on the part of the screw 2 of the powder mixture.
  • the silo is full and the loading of the powder mixture on the elastically deformable wall 12 causes the deformation thereof.
  • the previously-described screw 2 is set in rotation, a raising of part of the stored powder mixture is originated, and precisely in the part stored in proximity of the discharge mouth 3.
  • the raising necessarily causes a reduction in the load bearing on the elastically deformable wall 12; it follows that the wall returns into its non-deformed state.
  • the elastic return of the wall causes a thrust on the powder mixture adjacent thereto, with a consequent breakage of the bridge and detachment of the product on the wall, with a consequent exit of the material from the discharge mouth 3 of the silo.
  • the elastically deformable wall 12 is constituted by a first hollow truncoconical basket made of a deformable plastic material (preferably a techno-polymer) which constitutes the terminal part of the hopper 11.
  • the storage silo 1 further comprises at least a rigid cage 9, externally associated to the at least a deformable wall 12, with functions of supporting and limiting the deformation of the wall 12.
  • the rigid cage 9 is constituted by a second hollow truncoconical basket predisposed for housing the first basket, the internal walls of the second basket being slightly concave in order to enable deformation of the deformable elastic wall 12 associated thereto.
  • the method for temporary storage of powder mixtures of the present invention necessarily comprises a stage of introduction of the powder mixture internally of the storage silo 1 and a stage of extraction of the powder mixture from the discharge mouth 3 located at the bottom of the silo 1.
  • a stratification of the constituents of the mixture can occur, due to the selective depositing of the powders having various granulometries.
  • the method further comprises a stage, intermediate with respect to the two previously- described stages, of movement of the powder mixture internally of the storage silo 1.
  • the movement stage comprises a main stage of raising at least a part of the powder mixture from the bottom towards the top of the storage silo 1 actuated by means of the vertical screw 2.
  • the screw is thus set in rotation in the correct direction and raises the powder mixture from the bottom towards the top of the silo, by activation of the motor 15 operatively connected to the central shaft 13.
  • the part of the powder mixture which is raised is displaced by the screw 2 through the vertical central channel 7 having a guide function.
  • the raised powder mixture is collected in the vicinity of the lower mouth 7a of the central channel 7, and exits from the upper mouth 7b.
  • the method further comprises a second stage of projection of at least a part of the powder mixture raised by the screw 2 during the main raising stage away from the longitudinal axis x of the storage silo 1, this stage being finalised to obtaining a homogeneous distribution of the part of powder mixture interested by the main raising stage above the free surface of the powder mixture stored internally of the storage silo 1.
  • the redistribution of the powder mixture performed during this stage is necessary for preventing an accumulation of the shifted material at the central part of the site, which would threaten correct movement of the whole mass of material. Thanks to the redistribution, the free surface of the material internally of the silo is maintained substantially horizontal during the course of the distribution stage.
  • the second projection stage is actuated by means of the previously- described lower deflector 5, against which the powder mixture raised by the screw 2 along the central channel 7 impacts.
  • both the screw 2 and the lower deflector 5 are set in rotation by means of activation of the motor 15 which is operatively connected to the central shaft 13.
  • the stage of introducing the power mixture internally of the storage silo is of particular importance.
  • the free surface of the powder mixture deposited internally of the silo 1 should take on a convex shape at the end of the stage, in order to prevent accumulation of material along the walls, which would be difficult to shift.
  • the stage of introduction of the powder mixture internally of the storage silo 1 comprises a first stage of projection of the powder mixture against the lower surface of the upper deflector 4, which as already mentioned is predisposed to deviate at least a part of the powder mixture impacting on the longitudinal axis of the storage silo 1.
  • the free surface of the powder mixture deposited internally of the storage silo 1 during the stage of introduction is convex.
  • This first stage of projecting of the powder mixture is done using known means, by sending the mixture under pressure into the opening 6 of the directed tube 8.
  • the upper deflector 4 is maintained in rotation by the activation of the motor 15 operatively connected to the central shaft 13.
  • a further critical stage of the described method is the stage of extracting the powder mixture contained in the storage silo 1 through the discharge mouth 3. During this stage, as already mentioned, the formation of bridges in proximity of the discharge mouth 3 on the part of material to be discharged is prevented.
  • the stage of extraction of the powder mixture from the storage silo 1 comprises an auxiliary stage of raising at least part of the powder mixture from the bottom towards the top of the storage silo 1 by means of the screw 2.
  • This stage has the aim of reducing the load of powders in the mixture that bear on the at least an elastically deformable wall 12 arranged in proximity of the discharge mouth 3 of the storage silo 1, causing the elastic return of the wall 12 with the effect of transmitting an elastic pulse to the powder mixture adjacent thereto.
  • the elastic pulse aids extraction of the powder mixture from the discharge mouth 3 of the storage silo 1, breaking any vaulted arches which might have formed in the mixture and the detachment of the product from the wall itself.
  • the screw 2 is thus maintained in rotation by means of the activation of the motor 15 operatively connected to the central shaft 13.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Dispersion Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)

Abstract

L'invention concerne un procédé permettant de stocker temporairement des mélanges de poudres et un silo de stockage permettant la mise en oeuvre dudit procédé. Le procédé comprend des étapes consistant à introduire un mélange de poudres à l'intérieur d'un silo de stockage (1) et à extraire ce mélange de poudres par un orifice de décharge (3) situé au fond du silo (1) ainsi qu'une étape intermédiaire consistant à brasser le mélange de poudres à l'intérieur du silo de stockage (1). L'étape de brassage, dont le but est d'empêcher le dépôt sélectif de poudres présentant différentes granulométries, comprend une étape principale consistant à faire remonter au moins une partie du mélange de poudres du fond vers une partie supérieure du silo de stockage (1), laquelle étape principale est effectuée au moyen d'une vis verticale (2).
PCT/IB2008/000795 2007-04-06 2008-03-12 Procédé de stockage temporaire de mélanges de poudres et silos de stockage pour la mise en oeuvre dudit procédé WO2008122860A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2008800155664A CN101678292B (zh) 2007-04-06 2008-03-12 用来临时存储粉末混合物的方法和用来执行该方法的存储筒仓

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT000129A ITMO20070129A1 (it) 2007-04-06 2007-04-06 Metodo per lo stoccaggio temporaneo di miscele di polveri e silo di stoccaggio per l'attuazione di tale metodo.
ITMO2007A000129 2007-04-06

Publications (1)

Publication Number Publication Date
WO2008122860A1 true WO2008122860A1 (fr) 2008-10-16

Family

ID=39711110

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2008/000795 WO2008122860A1 (fr) 2007-04-06 2008-03-12 Procédé de stockage temporaire de mélanges de poudres et silos de stockage pour la mise en oeuvre dudit procédé

Country Status (3)

Country Link
CN (1) CN101678292B (fr)
IT (1) ITMO20070129A1 (fr)
WO (1) WO2008122860A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108579559A (zh) * 2018-05-04 2018-09-28 信易电热机械有限公司 一种混合式储料桶

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109881068A (zh) * 2019-04-04 2019-06-14 常熟理工学院 一种阻燃镁合金材料及其制备方法以及隔氧熔炉
EP3733558B1 (fr) * 2019-05-03 2022-01-26 Color Service S.r.l. Unité de dosage pour systèmes de pesage automatiques

Citations (7)

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Publication number Priority date Publication date Assignee Title
US2530814A (en) * 1945-10-12 1950-11-21 Schenley Ind Inc Apparatus for aerating liquids
GB773497A (en) * 1953-12-07 1957-04-24 George Joseph Thordahl An improved mixing machine
US4145383A (en) * 1976-09-01 1979-03-20 Howard Machinery Limited Slurry aeration method and apparatus
FR2472948A1 (fr) * 1980-01-07 1981-07-10 Sablons Fonderies Atel Agitateur destine a homogeneiser un melange de produits contenu dans un recipient
EP0170080A1 (fr) * 1984-07-28 1986-02-05 Mathis System-Technik GmbH Dispositif de distribution de matériaux en vrac dans un silo
US5248485A (en) * 1990-04-04 1993-09-28 Outokumpu Oy Method for mixing liquid, solids and gas and for simultaneously separating gas or gas and solids from the liquid
DE19605889A1 (de) * 1996-02-19 1997-08-21 Bock Norman Behälter, insbesondere Silobehälter

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Publication number Priority date Publication date Assignee Title
DE2638965A1 (de) * 1976-08-28 1978-03-02 Howard Machinery Ltd Vorrichtung und verfahren zum belueften von abwasserschlamm
CN2286070Y (zh) * 1997-04-21 1998-07-15 何懋彰 混合搅拌机

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2530814A (en) * 1945-10-12 1950-11-21 Schenley Ind Inc Apparatus for aerating liquids
GB773497A (en) * 1953-12-07 1957-04-24 George Joseph Thordahl An improved mixing machine
US4145383A (en) * 1976-09-01 1979-03-20 Howard Machinery Limited Slurry aeration method and apparatus
FR2472948A1 (fr) * 1980-01-07 1981-07-10 Sablons Fonderies Atel Agitateur destine a homogeneiser un melange de produits contenu dans un recipient
EP0170080A1 (fr) * 1984-07-28 1986-02-05 Mathis System-Technik GmbH Dispositif de distribution de matériaux en vrac dans un silo
US5248485A (en) * 1990-04-04 1993-09-28 Outokumpu Oy Method for mixing liquid, solids and gas and for simultaneously separating gas or gas and solids from the liquid
DE19605889A1 (de) * 1996-02-19 1997-08-21 Bock Norman Behälter, insbesondere Silobehälter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108579559A (zh) * 2018-05-04 2018-09-28 信易电热机械有限公司 一种混合式储料桶

Also Published As

Publication number Publication date
ITMO20070129A1 (it) 2008-10-07
CN101678292A (zh) 2010-03-24
CN101678292B (zh) 2013-05-01

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