US3682569A - Apparatus for granulating powder-like material - Google Patents

Apparatus for granulating powder-like material Download PDF

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Publication number
US3682569A
US3682569A US90524A US3682569DA US3682569A US 3682569 A US3682569 A US 3682569A US 90524 A US90524 A US 90524A US 3682569D A US3682569D A US 3682569DA US 3682569 A US3682569 A US 3682569A
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US
United States
Prior art keywords
powder
layer
container
granulating
materials
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Expired - Lifetime
Application number
US90524A
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English (en)
Inventor
Alexei Alexeevich Vagin
Veniamin Nikolaevich Shalygin
Viktor Ivanovich Shiborin
Vladimir Ilich Murakhver
Nikolai Grigorievich Sharov
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.)
DZUZHINSKY FILIAL NANCHNO-ISSLEDORATELSKOGO I KONSTRUKTORSKVGO INST KHIMICHESKOGO INST KHIMICHESKOGO MASHI-NOSTROENIA
DZUZHINSKY NANCHNO I I K I KHI
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DZUZHINSKY NANCHNO I I K I KHI
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2/00—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic
    • B01J2/12—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic in rotating drums
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2/00—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic
    • B01J2/16—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic by suspending the powder material in a gas, e.g. in fluidised beds or as a falling curtain

Definitions

  • ABSTRACT Filed! 1 1970 This invention relates to methods of granulating powder-like materials and to apparatus for accom- [211 App] 90524 plishing these methods.
  • the present invention relates to a field of technology involving granulation of powder-like materials and, more particularly, it relates to a method of granulating such materials and to an apparatus for accomplishing this method.
  • the invention can be utilized in chemical, metallurgical and other branches of industry.
  • an apparatus for the realization of said method comprising an inclined rotatable container such as cylinder provided with means for charging powder-like material thereinto, means for feeding into said container and sprinkling over the surface of a layer of powder-like material a liquid binder component, and means for discharging finished granules from the container (of, FRG Pat. No. 881,927, class 82 a, 19/07, issued in 1949).
  • An essential disadvantage inherent in the known method and apparatus consists in that the outer surface of granules thus obtained is markedly rough and porous. When pouring, transporting, drying and reloading products consisting of such granules, a great amount of dust is produced impairing the sanitary conditions in the course of further handling the product, much of the product being irrevocable lost as dust.
  • An object of the present invention is to avoid these disadvantages.
  • the invention is aimed at the solution of a technical problem of developing a method of granulating powder-like material and an apparatus for accomplishing said method that would make for producing more compact granules feating a uniform and smooth outer surface.
  • the problem of the invention can be solved by the provision of a method of granulating powder-like materials by sprinkling a layer of powder-like material with a liquid binder component in the course of a con tinuous agitation of the layer and repeated rolling of the resulting wet lumps on the free surface of the layer of powder-like material, wherein, according to the present invention, the wet lumps formed as a result of sprinkling the layer of powder-like material are periodically subjected to squeezing during their passage on the free surface of said layer.
  • an apparatus for accomplishing the method of the invention comprising a rotatably mounted container such as cylinder provided with means for charging powder-like material thereinto and with means for pulverizing inside said container the liquid binder component for sprinkling the powder-like material, according to the invention, inside said container are mounted pliable members, each made as an endless belt, secured on at least one shaft passed through the container so that the lower portion of each pliable member contacts the surface of the layer of powder-like material charged into the container.
  • the shaft passed through the container be made capable of rotation in a direction opposite to that of the container rotation. This helps effect the squeezing of the wet lumps rolling on the free surface of the layer of powder-like material accompanied with the movement of the squeezing surface of the pliable members.
  • the pliable members can be made hollow and filled with a medium such as gas, liquid or free-flowing solid material.
  • the present method of granulating powder-like materials and the apparatus for accomplishing said method, embodying the present invention provide a successful technical solution to the above-listed problems of the invention.
  • FIG. 1 is a general view of an apparatus embodying the present invention.
  • HO. 2 is a section taken on line llll of FIG. 1.
  • the method of granulating powder-like materials, according to the invention consists in the following.
  • initial powder-like materials is continuously fed via spout l to a container, in particular, cylinder 2, and the layer of charged material is sprinkled on the surface with a liquid binder component that is also continuously delivered via pipeline 3 and pulverized in fine drops with the aid of pulverizers 4.
  • Small wet lumps formed on the layer surface during the rotation of the cylinder 2 from a drive 5 are continuously agitated together with powder-like material and with each turn of the cylinder 2, pass a part of their path inside the layer and a part of the path on the surface of said layer.
  • the lumps are subjected to squeezing by pliable members 6 (FIGS.
  • the pliable members 6 can be made continuous over the length of the cylinder 2 or they can be composed of separate sections arranged longitudinally and somewhat spaced from each other. Each of said members can be made hollow in cross section.
  • the inner spaces of the pliable members can be filled with gas, liquid or free-flowing solid material such as shots.
  • Attached to the inner wall of the cylinder 2 are longitudinal extending flanges 8 unifonnly distributed over the length and circumference of the cylinder 2 which are adapted to scoop the powder-like material from the inside of the layer, when in their lower position, and to pour said material onto the wet lumps rolling under the pliable members 6, when in their extreme upper position. This helps prevent the mass of moist product from adhering to the outer surface of the pliable members 6 and to intensify the rolling of the powder-like product onto the wet lumps, thereby increasing the efficiency of the process.
  • the inner surface of the cylinder 2 can be covered with longitudinally extending rubber strips 9 attached to the wall of the cylinder 2 with their long edges.
  • the strips 9 cave in, as a result of which the crust of wet mass adhered thereto breaks up and comes off.
  • the pliable members 6 are made in the form of a thin endless belt loose-fitted on an intermediate cylinder 10 secured on the shaft 7.
  • the lower portion of the pliable members 6 sags under the effect of gravity and contacts the layer of wet lumps rolling on the surface of the layer of powder-like material.
  • the pliable members 6, however, can be set directly on one or more stationary axles parallel to the axis of the shaft 7 and secured to said shaft, for example, by means of brackets provided with bearings adapted for the passage therethrough of the shaft (not show in the drawings).
  • the cylinder 2 is also provided with a discharge chamber ll (FIG. 1), a rimmed toothed wheel 12 connected with the drive 5, and binding bands 13, and is mounted with a slight inclination towards its discharge end on bearing 14 and thrust l5 rollers,
  • the shaft 7 is rotated by a drive 16 mounted on a frame 17.
  • the cylinder 2 is provided with the flanges 8 and the longitudinally extending strips 9, however, the use of said elements for accomplishing the method according to the invention is not imperatlve.
  • the shaft 7 is made capable of rotation in a direction opposite to that of the cylinder rotation.
  • said shaft can rotate in the other direction or be loose-mounted in bearings provided on the outer side of the cylinder (not show in the drawings).
  • An apparatus for granulating powder-like materials comprising: a rotatably mounted container, made preferably as a cylinder; means for charging powderlike material into said container; means for pulverizing inside said container at liquid binder component for sprinkling powder-like material therewith; at least one shaft passing through said container; pliable members, each made as an endless belt, said pliable members being secured on said at least one shaft so that the lower portion of each of said pliable members contacts the surface of the layer of powder-like material charged into said container.

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Glanulating (AREA)
  • Medicinal Preparation (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
US90524A 1969-11-24 1970-11-18 Apparatus for granulating powder-like material Expired - Lifetime US3682569A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU1378801 1969-11-24

Publications (1)

Publication Number Publication Date
US3682569A true US3682569A (en) 1972-08-08

Family

ID=20448295

Family Applications (1)

Application Number Title Priority Date Filing Date
US90524A Expired - Lifetime US3682569A (en) 1969-11-24 1970-11-18 Apparatus for granulating powder-like material

Country Status (6)

Country Link
US (1) US3682569A (enrdf_load_stackoverflow)
CA (1) CA940102A (enrdf_load_stackoverflow)
DE (1) DE2053235C3 (enrdf_load_stackoverflow)
FR (1) FR2072341A5 (enrdf_load_stackoverflow)
GB (1) GB1298968A (enrdf_load_stackoverflow)
NL (1) NL149387B (enrdf_load_stackoverflow)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3834850A (en) * 1971-10-04 1974-09-10 Huber Corp J M Apparatus for agglomerating powders
US4050869A (en) * 1974-03-11 1977-09-27 J. M. Huber Corporation Apparatus for agglomerating powders
US4213924A (en) * 1978-06-19 1980-07-22 Tennessee Valley Authority Granulation and coating by improved method of heat removal
US4582263A (en) * 1982-12-02 1986-04-15 Lever Brothers Company Apparatus for mixing or granulation of particles
US4686115A (en) * 1985-01-18 1987-08-11 Fertimont S.P.A. Process for granulating chemical products and apparatus therefor
EP3439776A4 (en) * 2016-04-05 2019-11-20 Bepex International, LLC SYSTEMS AND METHOD FOR MIXING WET AND DRY MATERIALS

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1129182A (en) * 1978-11-06 1982-08-10 Samuel Y. Tse Pelletizing method and apparatus
DE2906188C2 (de) * 1979-02-17 1982-12-30 Kalkwerk Mathis Gmbh & Co, 7801 Merdingen Verfahren zur Herstellung eines Granulats und Vorrichtung zur Durchführung des Verfahrens
US4569648A (en) * 1984-01-21 1986-02-11 Skw Trostberg Aktiengesellschaft Self-cleaning rotating drum
HU197523B (en) * 1986-04-30 1989-04-28 Eroemue Es Halozattervezoe Apparatus for wetting and simultaneous mixing dustlike and/or grainlike materials
RU2135609C1 (ru) * 1998-01-27 1999-08-27 Акционерное общество "Новолипецкий металлургический комбинат" Барабанный окомкователь

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3834850A (en) * 1971-10-04 1974-09-10 Huber Corp J M Apparatus for agglomerating powders
US4050869A (en) * 1974-03-11 1977-09-27 J. M. Huber Corporation Apparatus for agglomerating powders
US4213924A (en) * 1978-06-19 1980-07-22 Tennessee Valley Authority Granulation and coating by improved method of heat removal
US4582263A (en) * 1982-12-02 1986-04-15 Lever Brothers Company Apparatus for mixing or granulation of particles
US4686115A (en) * 1985-01-18 1987-08-11 Fertimont S.P.A. Process for granulating chemical products and apparatus therefor
EP3439776A4 (en) * 2016-04-05 2019-11-20 Bepex International, LLC SYSTEMS AND METHOD FOR MIXING WET AND DRY MATERIALS

Also Published As

Publication number Publication date
CA940102A (en) 1974-01-15
NL149387B (nl) 1976-05-17
DE2053235A1 (de) 1971-06-16
DE2053235C3 (de) 1975-11-06
NL7016509A (enrdf_load_stackoverflow) 1971-05-26
GB1298968A (en) 1972-12-06
FR2072341A5 (enrdf_load_stackoverflow) 1971-09-24
DE2053235B2 (de) 1975-03-27

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