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WO2019178653A1 - Hydrocyclone pour circuit de concassage - Google Patents

Hydrocyclone pour circuit de concassage Download PDF

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Publication number
WO2019178653A1
WO2019178653A1 PCT/BG2018/000014 BG2018000014W WO2019178653A1 WO 2019178653 A1 WO2019178653 A1 WO 2019178653A1 BG 2018000014 W BG2018000014 W BG 2018000014W WO 2019178653 A1 WO2019178653 A1 WO 2019178653A1
Authority
WO
WIPO (PCT)
Prior art keywords
nozzle
water chamber
hydrocyclone
flange
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.)
Ceased
Application number
PCT/BG2018/000014
Other languages
English (en)
Russian (ru)
Inventor
Крассимир ИОНКОВ
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to PCT/BG2018/000014 priority Critical patent/WO2019178653A1/fr
Publication of WO2019178653A1 publication Critical patent/WO2019178653A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
    • B03B5/00—Washing granular, powdered or lumpy materials; Wet separating
    • B03B5/28—Washing granular, powdered or lumpy materials; Wet separating by sink-float separation
    • B03B5/30—Washing granular, powdered or lumpy materials; Wet separating by sink-float separation using heavy liquids or suspensions
    • B03B5/32—Washing granular, powdered or lumpy materials; Wet separating by sink-float separation using heavy liquids or suspensions using centrifugal force
    • B03B5/34—Applications of hydrocyclones
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04C—APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
    • B04C5/00—Apparatus in which the axial direction of the vortex is reversed

Definitions

  • the invention relates to the field of mineral processing and more specifically to a device for classification, where a higher efficiency of the separation process is required when working with suspensions with a high solids content.
  • Known hydrocyclone [1] with improved removal of fine material from sand including: the zone of tangential injection of the supplied pulp; a separation zone following the discharge zone, with a nozzle for unloading the sands and a nozzle located axially in the inner cavity of the hydrocyclone for the upper product; at least one other inlet in the discharge zone for supplying the barrier fluid; a thin plate in the discharge zone that separates the path of the injected pulp from the path of the barrier fluid, while it mixes with the pulp in the separation zone, where the separation zone includes a conical part adjacent to the cylindrical part, which leads to the nozzle for unloading sand.
  • the objective of the invention is the creation of a hydrocyclope for the grinding chain, through which to eliminate these disadvantages.
  • hydrocyclone which includes a tangential injection zone of the feed pulp, a separation zone following the discharge zone, with a nozzle for unloading sand and a nozzle located axially in the inner cavity of the hydrocyclone for the top product.
  • the hydrocyclone consists of a cylindrical inlet section to which a supply pipe is tangentially mounted and an overflow pipe is axially mounted. Cylindrical inlet section ⁇ attached to the water chamber by means of a flange to it top cover.
  • the water chamber consists of an inner wall and an outer wall attached by thread to the lid. The inner wall of the water chamber is a cylindrical porous wall made of sintered corundum.
  • the inner wall of the water chamber is sealed at the top and bottom with rubber seals.
  • a flange is mounted in the lower part of the water chamber, which is attached from below to the flange of the conical body of the hydrocyclone. In the lower part of the conical body one lower flange is mounted, which is attached to the flange of the sand nozzle.
  • a ceramic insert with high abrasion resistance is preferably placed in the sand nozzle.
  • a nozzle for the upper product which consists of a cylindrical part tightly inserted into the overflow pipe of the feed section and a conical part, which consists of two 180 ° wings located opposite the cone forming and forming wells whose holes are directed against the direction of rotation of the pulp.
  • the cone angle of the overflow nozzle is equal to the cone angle of the hydrocyclone body.
  • the conical part of the overflow nozzle is closed by the top cover and the bottom cover.
  • Figure 1 depicts a vertical section of a hydrocyclone.
  • Figure 2 is a cross section of the plane aa of the hydrocyclone.
  • the hydrocyclone consists of a cylindrical inlet section 3 with a flange 5.
  • An inlet pipe 2 is mounted tangentially to the inlet section 3.
  • An overflow pipe 4 is mounted axially to the inlet section 3, the cover 7 of the water chamber 6 is bolted 28, 29 with nuts 30, 31 to the flange 5 entrance section .3.
  • the water chamber 6 consists of an external cylindrical wall 26, which is mounted with a thread 9 to the cover 7. Under the outer cylindrical wall 26 there is a lower flange 13 of the water chamber 6.
  • a cylindrical porous wall C sealed with rubber seals 10 is mounted in the inner cavity of the water chamber 6 12.
  • Wall 11 is made of sintered corundum, or of ceramic with increased hardness and wear resistance.
  • the outer wall 26 of the water chamber 6 is attached to the supply pipe 8. From the bottom the sides of the water chamber 6 by means of a flange 13 and a flange 14, respectively, with bolts 32,
  • the conical body 15 of the hydrocyclone is fastened.
  • the inner surface of the conical housing 15 is lined with a wear-resistant coating such as basalt or polyurethane.
  • a connecting flange 21 is mounted, which is fastened with bolts 36, 37 with nuts 38, 39, respectively, to the flange 22 of the sand nozzle 23.
  • a ceramic insert 40 with high abrasion resistance is preferably placed in the sand nozzle 23.
  • the conical part 27 is closed at the top and bottom, respectively, by the upper cover 1 and the lower cover 20.
  • the conical part 27 consists of two 180 ° wings 24, 25 located at the same distance from the axis of symmetry and forming wells 18, 19, whose holes are directed against the direction pulp rotation.
  • the angle of the cone 27 of the nozzle 16 is equal to the angle of the housing 15 of the hydrocyclone.
  • the hydrocyclone works as follows.
  • the pulp of the mill is introduced tangentially into the hydrocyclone through the pipe 2 under pressure by means of a slurry pump and swirls in the inlet section 3.
  • the swirl slides along the length of the porous wall 11, through which, water is introduced perpendicular to the direction of movement. Due to its lower specific gravity, water creates a centripetal force and carries small particles to the axis of the hydrocyclone. The magnitude of this force depends on the amount of water supplied and is determined by regulating the pressure in the water chamber 6.
  • a coarse-grained pulp fraction already washed from the sludge, goes down the conical body 15 of the hydrocyclone and is discharged through the tabs 40 of the sand nozzle 23.
  • the fine fraction located in the core of the hydrocyclone enters through the bore holes 18, 19 of the overflow nozzle 16, swirls in it and exits through the cylindrical part 17 to unload through the overflow pipe 4.
  • the diameter D 50 (diameter tr particles that fall into the coarse-grained and fine-grained fractions with the same probability) of the separation process depends on the width of the wells 18, 19, the pulp pressure, the flow rate and its grain size in the feed, the pressure in the water chamber 6, and the opening diameter of the sand 40 tab nozzles 23 and hydrocyclone geometry. Important, however, less powerful factors are the angle of the cone, ⁇ —the relationship between the heights the inlet section 3, the water chamber 6 and the conical part 15; the location of the overflow nozzle 16 and others.
  • the swirling suspension After washing in the zone of the water chamber 6, the swirling suspension passes into the separation zone, in which the overflow enters the wells 18, 19 and due to the lower pressure in the plane of the hole of the cylindrical part 17, an upward force is created.
  • the fine-grained fraction leaves through the overflow pipe 4.
  • the separation process is improved due to two reasons: 1) the creation of a centripetal force by supplying water through the porous wall 11, which is able to entrain small particles to the core and 2) turbulence is avoided due to the fact that during peripheral flow movement down There is no physical contact with the flow moving up the axis. So, due to the increased efficiency, the finished class does not return to the mill together with the circulating load, which affects positively its productivity.

Landscapes

  • Cyclones (AREA)
  • Disintegrating Or Milling (AREA)

Abstract

L'invention peut être utilisée pour la classification de particules de suspensions possédant une teneur élevée en substance solide. L'hydrocyclone comprend une section d'entrée (3) sur laquelle est monté tangentiellement un tube d'alimentation (2), est monté axialement un trop-plein (4) et un corps conique (15). La chambre à eau (6) comprend une paroi externe (26) et une paroi cylindrique interne (11) faite en corindon fritté. Dans la cavité interne de la chambre à eau (6) et du corps conique (15) est monté un ajutage (16) pour le produit supérieur constitué d'une partie cylindrique (17) insérée de façon serrée dans le trop-plein (4) et la partie conique (27), cette dernière étant constituée de deux ailes à 180° (24, 25). Ces ailes sont disposées à des distances égales par rapport à l'axe de symétrie et forment des puits (18, 19) dont les orifices sont orientés de manière à faire face au sens de rotation de la pulpe. L'angle du cône d'ajutage (16) est égal à l'angle de corps conique (15). L'invention permet d'augmenter l'efficacité de séparation de particules grâce à une réduction de turbulences qui provoque un échange de particules solides entre les flux axiaux ascendant et le flux périphérique descendant.
PCT/BG2018/000014 2018-03-20 2018-03-20 Hydrocyclone pour circuit de concassage Ceased WO2019178653A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/BG2018/000014 WO2019178653A1 (fr) 2018-03-20 2018-03-20 Hydrocyclone pour circuit de concassage

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/BG2018/000014 WO2019178653A1 (fr) 2018-03-20 2018-03-20 Hydrocyclone pour circuit de concassage

Publications (1)

Publication Number Publication Date
WO2019178653A1 true WO2019178653A1 (fr) 2019-09-26

Family

ID=67986749

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/BG2018/000014 Ceased WO2019178653A1 (fr) 2018-03-20 2018-03-20 Hydrocyclone pour circuit de concassage

Country Status (1)

Country Link
WO (1) WO2019178653A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110787904A (zh) * 2019-11-18 2020-02-14 张喜升 高频振动大锥角旋流器离心选别设备
CZ309113B6 (cs) * 2020-12-21 2022-02-02 Bvt Technologies, A.S. Analytický hydrocyklón a jeho použití

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU647010A1 (ru) * 1977-05-03 1979-02-15 Якутский научно-исследовательский и проектный институт алмазодобывающей промышленности "Якутнипроалмаз" Классифицирующий гидроциклон
RU2209123C2 (ru) * 2001-03-22 2003-07-27 Тувинский институт комплексного освоения природных ресурсов СО РАН Способ обесшламливания пульпы и устройство для его осуществления
RU2292957C2 (ru) * 2005-03-21 2007-02-10 Открытое акционерное общество "Всероссийский алюминиево-магниевый институт" Гидроциклон
US20170000145A1 (en) * 2001-07-16 2017-01-05 Foret Plasma Labs, Llc Apparatus for treating a substance with wave energy from an electrical arc and a second source

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU647010A1 (ru) * 1977-05-03 1979-02-15 Якутский научно-исследовательский и проектный институт алмазодобывающей промышленности "Якутнипроалмаз" Классифицирующий гидроциклон
RU2209123C2 (ru) * 2001-03-22 2003-07-27 Тувинский институт комплексного освоения природных ресурсов СО РАН Способ обесшламливания пульпы и устройство для его осуществления
US20170000145A1 (en) * 2001-07-16 2017-01-05 Foret Plasma Labs, Llc Apparatus for treating a substance with wave energy from an electrical arc and a second source
RU2292957C2 (ru) * 2005-03-21 2007-02-10 Открытое акционерное общество "Всероссийский алюминиево-магниевый институт" Гидроциклон

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110787904A (zh) * 2019-11-18 2020-02-14 张喜升 高频振动大锥角旋流器离心选别设备
CZ309113B6 (cs) * 2020-12-21 2022-02-02 Bvt Technologies, A.S. Analytický hydrocyklón a jeho použití

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