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WO2019035729A1 - Procédé pneumatique de séparation de matières de base d'origine minérale ou industrielle en fonction de la forme des particules - Google Patents

Procédé pneumatique de séparation de matières de base d'origine minérale ou industrielle en fonction de la forme des particules Download PDF

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Publication number
WO2019035729A1
WO2019035729A1 PCT/RU2017/000594 RU2017000594W WO2019035729A1 WO 2019035729 A1 WO2019035729 A1 WO 2019035729A1 RU 2017000594 W RU2017000594 W RU 2017000594W WO 2019035729 A1 WO2019035729 A1 WO 2019035729A1
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WO
WIPO (PCT)
Prior art keywords
particles
chamber
raw materials
air
separating
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.)
Ceased
Application number
PCT/RU2017/000594
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English (en)
Russian (ru)
Inventor
Андрей Иванович СТЕПАНЕНКО
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Individual
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Individual
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Publication date
Application filed by Individual filed Critical Individual
Priority to PCT/RU2017/000594 priority Critical patent/WO2019035729A1/fr
Priority to EA201900111A priority patent/EA037602B1/ru
Publication of WO2019035729A1 publication Critical patent/WO2019035729A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B4/00—Separating solids from solids by subjecting their mixture to gas currents
    • B07B4/08—Separating solids from solids by subjecting their mixture to gas currents while the mixtures are supported by sieves, screens, or like mechanical elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B7/00—Selective separation of solid materials carried by, or dispersed in, gas currents
    • B07B7/08—Selective separation of solid materials carried by, or dispersed in, gas currents using centrifugal force

Definitions

  • the invention relates to the field of enrichment of mineral and technogenic raw materials and can be used to create mobile enrichment plants for processing and classifying raw materials according to the form in almost any weather conditions, including at ambient temperatures from -50 to + 50 ° C.
  • the method of processing must provide for the possibility of quickly and smoothly changing the technological regimes depending on the properties of the processed raw material (mass and particle size, density and shape), which will allow the creation of mobile concentrating plants of modular type using the same type of equipment with a low level of capital costs for their delivery and installation.
  • the method of enrichment of raw materials should be highly efficient, ensuring high quality of the products obtained, as well as ensuring that after its use only those wastes that are not suitable for further processing or direct application remain.
  • the technology of enrichment of raw materials should be all-weather and year-round in order for the process to take place not seasonally with temporary attraction of labor resources, but go all the time — with year-round employment of the local population. For this reason, the enrichment process cycle must include an ambient air temperature range from -50 to +50 ° C and should allow equipment to be placed under an open sky or with the use of lightweight shelters.
  • the main disadvantage of this method is the low separation efficiency and the possibility of implementing the process only on coarse material, despite the fact that it is necessary to recycle to a greater extent fine material in the industry.
  • Analysis of waste materials from the processing of natural materials with the extraction of mica using a similar technology showed that as a result, about half of the commercial mica with a grain size of 13-50 mm was lost, and the extraction of mica in smaller classes did not occur at all.
  • the closest to the claimed technical solution is the method of pneumatic enrichment of mineral raw materials (see. Eurasian patent N ° 022959, Cl. B07B 4/08, B03B 4/04, 2016), including placing enriched raw materials on an air-permeable surface that intersects a vertical chamber with an ascending air flow, lifting light fractions from an air-permeable surface, made in the form of a conveyor, missed below the bottom of the vertical base chamber, in which the choice of the air flow rate forms a volume pseudo-boiling layer of particles of a given density, into which particles of a lower density fall and pass freely through it, and then ascending a sound stream is transferred from the vertical chamber to the gravitational sedimentation chamber.
  • this method it is possible to separate materials not only in terms of density, but also in form, due to the fact that planar or needle-shaped grains have a greater ratio of the aerodynamic drag force to the particle weight.
  • the known method allows for year-round enrichment of raw materials in the open air or with the use of light-weight shelters, as well as a quick reorganization of the technological process for the processing of various types of mineral raw materials by changing the air flow rate.
  • the main disadvantage of this method is its functional limitations in the separation of mineral and technogenic raw materials, which contain many flat or filamentary particles.
  • This invention is based on the task of expanding the functional capabilities of the pneumatic method of separating particles, which can enrich particles of different types differing in shape by various degrees.
  • mineral raw materials and industrial wastes such as mica, asbestos ore, gravel, and household waste.
  • This task in the pneumatic method of separating mineral and technogenic raw materials in the form of particles including placing the processed raw materials on an air-permeable surface made in the form of a conveyor, running below the level of the lower base of the separation chamber, in which a volume pseudo-boiling fluid is formed a layer of particles of a given density, into which particles of lower density get into and freely pass through it, and then are transferred by ascending air flow from
  • the vertical chamber is gravitationally deposited by an additional air flow directed tangentially oriented towards the chamber wall into the separation chamber, creating auxiliary vortex flows near the walls and the lower base of the chamber, and then the ascending air flows , needle-shaped or filiform and transfer them to a gravitational sedimentation chamber, in which they create one or more counter-directed vortex flows, precipitating the particles in the chamber, from which they then remove are.
  • a contact method of exposure is used, for example, by mechanical scrapers, or a contactless method, for example, by exposure to an air stream or a combination of both of these methods.
  • the claimed pneumatic method of separation of mineral and technogenic raw materials in the form of particles allows the separation of mineral raw materials into almost any number of fractions having different shapes during one cycle of movement on the conveyor, while the method separates fractions with high efficiency and productivity that has no analogues among known methods of pneumatic separation of thin flat or filamentary particles, and therefore, meets the criterion of "inventive step".
  • Figure 1 presents the setup for the implementation of the proposed method of separation of mineral and technogenic raw materials in the form of particles, where: 1 - air-permeable conveyor with particles of enriched mineral raw materials 2; 3 - separation chamber with a lower base 4, a tangential nozzle 5, forcing air flow 6, and a mechanism for turning the direction of the jet 7; the upper part of the separation chamber 3 is connected by the air duct 8 to the gravitational deposition chamber 9, the lower base of which 10, is equipped with a rotary sluice gate 1 1 for periodically pouring out the particle-shaped fraction 12 of the raw material 12; the deposition chamber 9 through the duct 13 is connected to the exhaust fan 14; 15 - tangential duct, creating a stream of air 16, opposite to the stream of air 17 with particles of raw materials entering the chamber 9; 18 - air flow without raw materials, sucked from the chamber 9.
  • Figure 2 shows a drawing of the separation chamber 3 in isometry and shows the vortex flows inside the chamber: 19 — near-wall vortex flow, 20 — axial vortex flow.
  • a diagram of the vortex flows inside chamber 3 is visible.
  • Particles of the separated raw material 2 are evenly placed on the surface of the air-permeable conveyor 1 and move towards the separation chamber 3.
  • the raw material 2 falls into the zone of the volumetric fluidized bed particles of a given density, formed as a result of the upward flow of gas created by the fan 14 through the air ducts 8 and 13.
  • the separation of particles in shape occurs due to the difference in mass and aerodynamic resistance particles of different shapes.
  • flat particles have a mass several times, and sometimes several tens of times less than conventionally cuboid or spherical particles, while the aerodynamic drag of flat particles is significantly higher than the resistance of spherical particles.
  • the difference in properties leads to the fact that the speed of the soaring of particles of different shapes is significantly different.
  • needle-like or filamentary particles With flat or spherical or cubic particles. Having found themselves in the zone of the pseudo-boiling layer, the particles begin to circulate in it, and those that have a soaring speed less than the flow rate in separation chamber 3 are removed with flow 17 through the duct 8 to the deposition chamber 9.
  • Each of the chambers is connected with its gravitational sedimentation chamber 9 in the form of an inverted truncated cone with a diameter of the upper base of 2400 mm, a lower base of 900 mm and a height of 3200 mm.
  • the deposition chamber 9 has a design that provides for the formation of two oppositely directed vortices 15 and 17, while the vortex 15 is driven into the chamber 9 tangentially clockwise to its wall, and the vortex 17 is also tangential, but counterclockwise .
  • Ore particles 2 with a size of less than 1 mm wilt under the grid of conveyor 1 fall on a vibrating chute (it is conventionally not shown in Fig. 1) and are removed from further processing.
  • the air flow in chambers 3 is selected in such a way that in the first separation chamber there is a product represented by phlogopite plates with a thickness of less than 0.1 mm, and in the second chamber there are grains with a thickness of up to 1 mm.
  • the material remaining on the conveyor is represented by grains of rubble, which can be used for construction purposes.
  • the capacity of the experimental production line is up to 20 t / h.
  • Particles with a size of 5-10 mm are fed to a belt conveyor 1, with a web made of a mesh with a 3 mm cell and a width of 1000 mm moving at a speed of 1.0-2.0 m / s, over which one chamber 3 is installed, with a conical base 4, equal to the width of the conveyor - 1000 mm .
  • the cylindrical part of the chamber has a diameter of 1500 mm and a height of 1600 mm.
  • the chamber is connected to the gravity precipitation chamber 9 with an upper base diameter of 2800 mm, a lower base of 2000 mm and a height of 3700 mm.
  • Rubble particles with a size of less than 3 mm which remained in the rubble of class 5-10 due to the impossibility of their complete removal, wake up under the conveyor belt 1, fall on a vibrating trough (it is not shown conventionally in Fig. 1) and are removed from further processing.
  • the air streams 6 and 17 in the separation chamber 3 are selected in such a way that the product 3 has a flat, planar shape, and on the conveyor net 1 there remains a product represented by grains with a shape close to cubic.
  • the capacity of the experimental production line is up to 100 t / h.
  • Crushed stone of class 10-20 mm is processed on a similar installation, which differs in that the mesh size of the conveyor grid 1 is 5 mm.
  • a belt conveyor 1 with a web made of a mesh with a 10 mm cell, 500 mm wide and moving at a speed of 0.5-1.5 m / s, over which successively two cylindrical chambers 3 with conical chambers are installed bases 4, equal to the width of the conveyor - 500 mm.
  • the cylindrical part of the chamber has a diameter of 1200 mm and a height of 2000 mm.
  • Each of the chambers is connected with its gravitational sedimentation chamber 9 in the form of an inverted truncated cone with a diameter of an upper base of 2400 mm, a lower base of 900 mm and a height of 3200 mm.
  • Each chamber has a design that provides for the formation of two oppositely directed vortices 15 and 17. Particles of raw materials with a size of less than 10 mm wake up under the conveyor net 1 and fall on a vibrating chute (it is not shown conventionally in Fig. 1), which removes product from under the conveyor 1.
  • the air flow in the chambers is selected in such a way that the first chamber releases the product represented by thin materials, such as films, fabrics, paper, plastic from bottles, and in the second chamber, thicker - Gloss, which presented s basically cardboard.
  • the material remaining on the conveyor is represented by cubic-shaped grains, which are received for further processing.
  • the resulting products are then briquetted and used as fuel or raw materials for the chemical industry.
  • the capacity of the experimental production line is up to 4.5 t / h.
  • the inventive method allows you to effectively carry out pneumatic separation of particles from various mineral and industrial raw materials, differing in their form.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Combined Means For Separation Of Solids (AREA)

Abstract

L'invention concerne le domaine de l'industrie d'enrichissement de matières premières minérales et industrielles et peut s'utiliser pour créer des fabriques d'enrichissement mobiles destinées à la transformation et la classification de matières de base en fonction de leur forme pratiquement par tout temps, à des températures ambiantes comprises entre -50 et +50 ºC. L'invention concerne un procédé de séparation de de matières premières d'origine minérale ou industrielle en fonction de la forme des particules qui consiste à disposer les matières de base à traiter sur une surface étanche à l'air se présentant comme une bande convoyeuse qui passe en dessous de la base inférieure de la chambre de séparation dans laquelle on a formé par la sélection de débit du flux aérien une couche fluidisée profonde constituée de particules ayant une densité désirée qui se fait pénétrer et traverser sans obstacle par des particules de densité moindre qui sont ensuite transportées par un flux aérien ascendant de la chambre verticale dans la chambre de sédimentation par gravité. La nouveauté consiste en ce que l'on dirige dans la chambre de séparation un flux aérien supplémentaire orientée tangentiellement par rapport à la paroi de la chambre qui génère des tourbillons accessoires près des parois et de la base inférieure de la chambre, après que on fait entraîner par un flux aérien ascendant des particules de forme plate, pointu ou filiformes et les transporter dans la chambre de sédimentation par gravité dans laquelle on forme un ou plusieurs filets tourbillonnaires opposés qui provoquent le dépôt dans la chambres des particules qui sont ensuite évacuées.
PCT/RU2017/000594 2017-08-17 2017-08-17 Procédé pneumatique de séparation de matières de base d'origine minérale ou industrielle en fonction de la forme des particules Ceased WO2019035729A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/RU2017/000594 WO2019035729A1 (fr) 2017-08-17 2017-08-17 Procédé pneumatique de séparation de matières de base d'origine minérale ou industrielle en fonction de la forme des particules
EA201900111A EA037602B1 (ru) 2017-08-17 2017-08-17 Пневматический способ разделения минерального и техногенного сырья по форме частиц

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/RU2017/000594 WO2019035729A1 (fr) 2017-08-17 2017-08-17 Procédé pneumatique de séparation de matières de base d'origine minérale ou industrielle en fonction de la forme des particules

Publications (1)

Publication Number Publication Date
WO2019035729A1 true WO2019035729A1 (fr) 2019-02-21

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PCT/RU2017/000594 Ceased WO2019035729A1 (fr) 2017-08-17 2017-08-17 Procédé pneumatique de séparation de matières de base d'origine minérale ou industrielle en fonction de la forme des particules

Country Status (2)

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EA (1) EA037602B1 (fr)
WO (1) WO2019035729A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021064253A1 (fr) * 2019-10-03 2021-04-08 Value Ash Technologies Nv Dispositif pour le tri de particules de poudre

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU452369A1 (ru) * 1973-01-08 1974-12-05 Государственный всесоюзный дорожный научно-исследовательский институт Сепаратор дл разделени щебн по форме
SU825187A1 (ru) * 1979-01-25 1981-04-30 Предприятие П/Я А-1297 Воздушный сепаратор
WO2011142688A1 (fr) * 2010-06-21 2011-11-17 Общество С Ограниченной Ответственностью"Пpoмышлeннoe Обогащением (Ооо "Пpoмышлeннoe Обогащением) Installation de séparation pneumatique à vide de matières pulvérulentes
RU2522674C1 (ru) * 2012-10-25 2014-07-20 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Национальный исследовательский Томский государственный университет" (ТГУ) Способ газовой центробежной классификации и измельчения порошков
EA022959B1 (ru) * 2011-12-22 2016-03-31 Андрей Иванович СТЕПАНЕНКО Способ пневматического обогащения минерального сырья

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU452369A1 (ru) * 1973-01-08 1974-12-05 Государственный всесоюзный дорожный научно-исследовательский институт Сепаратор дл разделени щебн по форме
SU825187A1 (ru) * 1979-01-25 1981-04-30 Предприятие П/Я А-1297 Воздушный сепаратор
WO2011142688A1 (fr) * 2010-06-21 2011-11-17 Общество С Ограниченной Ответственностью"Пpoмышлeннoe Обогащением (Ооо "Пpoмышлeннoe Обогащением) Installation de séparation pneumatique à vide de matières pulvérulentes
EA022959B1 (ru) * 2011-12-22 2016-03-31 Андрей Иванович СТЕПАНЕНКО Способ пневматического обогащения минерального сырья
RU2522674C1 (ru) * 2012-10-25 2014-07-20 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Национальный исследовательский Томский государственный университет" (ТГУ) Способ газовой центробежной классификации и измельчения порошков

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021064253A1 (fr) * 2019-10-03 2021-04-08 Value Ash Technologies Nv Dispositif pour le tri de particules de poudre

Also Published As

Publication number Publication date
EA037602B1 (ru) 2021-04-20
EA201900111A1 (ru) 2020-05-26

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