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WO2004041436A2 - Debourbeur rotatif - Google Patents

Debourbeur rotatif Download PDF

Info

Publication number
WO2004041436A2
WO2004041436A2 PCT/ZA2003/000162 ZA0300162W WO2004041436A2 WO 2004041436 A2 WO2004041436 A2 WO 2004041436A2 ZA 0300162 W ZA0300162 W ZA 0300162W WO 2004041436 A2 WO2004041436 A2 WO 2004041436A2
Authority
WO
WIPO (PCT)
Prior art keywords
screen member
fraction
scrubber
scrubber according
side 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/ZA2003/000162
Other languages
English (en)
Other versions
WO2004041436A3 (fr
Inventor
Gerald Anthoney De Jongh
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 AU2003291209A priority Critical patent/AU2003291209A1/en
Publication of WO2004041436A2 publication Critical patent/WO2004041436A2/fr
Publication of WO2004041436A3 publication Critical patent/WO2004041436A3/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
    • B03B5/48—Washing granular, powdered or lumpy materials; Wet separating by mechanical classifiers
    • B03B5/52—Spiral classifiers
    • 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
    • B03B5/48—Washing granular, powdered or lumpy materials; Wet separating by mechanical classifiers
    • B03B5/56—Drum classifiers
    • 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
    • B03B9/00—General arrangement of separating plant, e.g. flow sheets
    • 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
    • B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/18—Drum screens
    • 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
    • B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/18—Drum screens
    • B07B1/22—Revolving drums

Definitions

  • This invention relates to a rotary scrubber used for the scrubbing of particulate materials such as ore, stone, gravel, sandstone etc.
  • the invention provides a rotary scrubber for particulate materials which includes a rotatable, cylindrical body with an inlet at a first end thereof, an outlet at a second end thereof, an inner side wall and an outer side wall, and an elongate, tubular first screen member which extends at least partially from the inlet into the body.
  • the body may include a lining formation in the form of a rubber lining on the inner side wall to provide at least limited protection to the body from the particulate materials scrubbed inside the body.
  • the body may include a plurality of elevation formations attached to the inner side wall. Each elevation formation may be in the form of an upstanding rib.
  • the first screen member extends from the inlet to the outlet and is spaced from the inner side wall. The first screen member may move in unison with the body and may be fixed to the body. Alternatively the first screen member may be releasably attached to the body.
  • the first screen member includes a spiral formation extending along the length of the first screen member.
  • the pitch of the spiral formation may be between 110 mm and 210 mm and preferably is between 155 mfri and 165 mm.
  • the scrubber may include a support formation whereon the body is rotatably received.
  • the support formation may include a frame and a plurality of runners, each of which is rotatably attached to the frame and engaged with the outer side wall of the body.
  • the scrubber may include a drive mechanism in the form of an electromechanical mechanism or a hydraulic mechanism to rotate the body.
  • the drive mechanism includes a drive wheel which is engaged with the body.
  • the scrubber may include a discharge formation attached to the outlet.
  • the discharge formation may be cylindrically shaped and may include a second screen member.
  • the second screen member may include a plurality of apertures, each of which may have a diameter of between 10 mm and 60 mm. Preferably each aperture has a diameter of between 25 mm and 35 mm.
  • the second screen member may be in the form of a trommel.
  • a first discharge chute may be in communication with the second screen . member, a second discharge chute may be in communication with a space between the first and second screen members and a third discharge chute may be in communication with the first screen member in order to transport processed particulate materials away from the discharge formation and the body.
  • a plurality of brackets may be located between the body and the first screen member.
  • the invention also extends to a rotary scrubber for particulate materials which includes a support frame, a cylindrical body with an inlet at a first end thereof, an outlet at a second end thereof, an inner side wall and an outer side wall, the body being rotatably engaged with the support frame, and an elongate, tubular first screen member which is attached to and spaced from the inner side wall and which extends inside the body from the inlet to the outlet.
  • a cylindrical discharge formation may be provided on the outlet, which discharge formation may have a second screen member.
  • the first screen member extends into the discharge formation.
  • the invention also provides a method of processing a particulate material which includes the steps of: a) feeding the particulate material into an elongate, tubular first screen member located inside a cylindrical body of a rotary scrubber; and b) separating the particulate material into a first fraction of generally a first particle size located inside the first screening member and a second fraction of generally a second particle size located outside the first screening member and inside the body, and wherein the first particle size is larger than the second particle size.
  • the method may include any one of or combination of the following steps: c) milling the first fraction within the first screening element; d) milling the second fraction within the body; and e) scrubbing the first and the second fractions within the body.
  • steps b, c, d and e take place simultaneously.
  • the method may include the step of separating the second fraction into a third fraction of generally a third particle size and a fourth fraction of generally a fourth particle size wherein the third particle size is larger than the fourth particle size.
  • the third and the fourth fractions may each be separately subjected to further processing and preferably the fourth fraction is subjected to a liquid/solid separation step.
  • the first fraction may be subjected to further processing separately from the second fraction.
  • Figure 1 is a side view of a rotary scrubber according to the invention
  • Figure 2 is a sectioned side view on the line 2-2 in Figure 1 of the scrubber of Figure 1 ;
  • Figure 3 is a sectioned side view on the line 3-3 in Figure 2 of the scrubber of Figure 1;
  • Figure 4 is a schematic representation of a method of processing particulate materials according to the invention.
  • FIGS 1, 2 and 3 of the accompanying drawings illustrate a rotary scrubber 10 which has a support 12 with which a drum 14 is rotatably engaged.
  • the support 12 has a frame 16 to which a plurality of runners 18 are attached by means of shafts 20.
  • a drive mechanism 22 in the form of an electromechanical drive of known construction is connected to a drive wheel 24.
  • the drive wheel 24 is also attached to the frame 16 by means of a shaft 20 and is engaged with the drum 14.
  • the frame 16 is made from an appropriate metal material and the runners 18 and drive wheel 24 are in the form of pneumatic tyres.
  • the electro- mechanical drive can be replaced with a hydraulic drive or any other appropriate mechanism to impart movement to the drive wheel 24.
  • the drum 14 has an elongate cylindrical shaped body 25 formed from metal sheet material with an inlet 26 at a first end 28 thereof, an outlet 30 at a second end 32 thereof and an inner side wall 34 and an outer side wall 36 on opposite sides of the sheet material.
  • the drum 14 can be of any appropriate dimensions and in this example is 5 meters in long and has a diameter of 3 meters.
  • End flanges 38A, B are respectively situated at the inlet 26 and outlet 30.
  • Stiffening rings 40A, B which extend around the outer side wall 36, reinforce the drum 14.
  • the drum 14 is cradled on the runners 18 and drive wheel 24 so that the runners 18 and the drive wheel 24 engage with the outer side wall 36.
  • the drum 14 is made in a known manner from any appropriate metal material.
  • a rubber lining 42 is attached to the inner side wall 34 in order to protect the drum 14 from particulate materials (not shown) fed into the drum 14 and agitated inside the drum 14.
  • a plurality of elevation formations or lifter bars 44 are also attached to the inner side wall 34.
  • Each of the lifter bars 44 is in the form of an upstanding rib and is reinforced by a plurality of gussets 46
  • a tubular, elongate screen member 48 extends inside the drum 14 from the inlet 26 to the outlet 30.
  • the screen member 48 is spaced from the inner side wall 34 by way of a plurality of brackets 50.
  • Each bracket 50 extends radially from the screen member 48 to the inner side wall 34.
  • the screen member 48 is permanently fixed to the drum 14 by way of the brackets 50. Alternatively the screen member 48 is releasably attached to the drum 14 by way of the brackets 50 to allow replacement of the screen member 48 if required.
  • the screen member 48 is in the form of a continuous spiral which has a diameter of approximately 1 500 mm.
  • the pitch of the spiral 48 can vary according to requirements and can be between 110 mm and 210 mm. Through experimentation the applicant has found that a pitch of between 155 and 165 mm is preferable for most types of ore, stone or gravel processed in diamond recovery processes. In this example the pitch is 160 mm.
  • a feeding chute 52 extends at least partially into the screen member 48 at the inlet 46 to deliver the particulate material into the screen member 48.
  • a discharge formation or trommel 54 is attached to the drum 14.
  • the trommel 54 is cylindrically shaped and has a screen 56.
  • the screen 56 has a plurality of aperture or holes 58. Again depending on requirements the size and shape of the apertures 58 can vary and the diameter of the apertures 58 can vary between 10 mm and 60 mm. Through experimentation the applicant has found that a diameter of between 25 mm and 35 mm is preferable for ore, stone or gravel processed in diamond recovery processes. In this example the diameter is 30 mm.
  • the screen member 48 extends into the trommel 54 and a space 60 is defined between the screen 56 and the screen member 48.
  • the screen member 48 and the trommel 54 are made from appropriate metal materials.
  • a first discharge chute 62 is in communication with the apertures 58 in the screen 56.
  • a second discharge chute 64 is in communication with the space 60 and a third discharge chute 66 is in communication with the inside of the screen member 48.
  • These chutes 62, 64 and 66 are of known construction.
  • a particulate material 68 is fed into the screen member 48 by way of the feeding chute 52 while the drum 14 is rotated by the drive wheel 24.
  • the drum 14 runs on the runners 18 in a known manner which results in the continuous, displacement and agitation of the particulate material 68 inside the screen member 48.
  • particles of a size less than the pitch of the spiral (in this case 160 mm) move out of the screen member 48 towards the inner side wall 34.
  • the particulate material 68 is separated into a first fraction 69 of generally a first particle size and a second fraction 70 of generally a second particle size. It is to be understood that the first particle size is larger than the second particle size.
  • the second fraction 70 remains inside the drum 14 and is agitated in a known manner.
  • the lifter bars 44 assist in this agitation as portions of the second fraction 70 are lifted away from a lower end of the drum 14 and thrown away from the inner side wall 34. In this way the cascading action of the second fraction 70 within the drum 14 is enhanced which assists in the milling of the second fraction 70 inside the drum 14.
  • the screen member 48 moves in unison with the drum 14 and the first fraction 69 inside the screen member 48 is also agitated and milled in a known manner.
  • the spiralling structure of the screen member 48 results in the first fraction 69 being moved along the length of the screen member 48 toward the outlet 30 while the milling action of the first fraction 69 continues.
  • the screen member 48 acts as an auger on the second fraction 70 and the second fraction 70 is also displaced towards the outlet 30.
  • liquid 74 is fed into the drum 14 through the inlet 26.
  • the liquid 74 can be water or any other chemical used during the processing of the particulate material 68 which causes scrubbing of both the first and second fractions 69 and 70 inside the drum 14 while the separation and milling actions continue.
  • the first fraction 69 is discharged from the screen member 48 into the third discharge chute 66 through which the first fraction 69 is carried away to further processing 75A.
  • a second separation takes place and the second fraction 70 is separated into a third fraction 76 of generally • a third particle size and a fourth fraction 78 of generally a fourth particle size.
  • the third particle size is therefore larger than the fourth particle size 78.
  • the third fraction 76 remains in the space 60 between the screening member 48 and the screen 56, is expelled from the space 60 into the second discharge chute 64 and is carried to further processing 75B.
  • the liquid 74 and fourth fraction 78 move along the first discharge chute 62 to further processing 75C.
  • the liquid 74 and fourth fraction 78 are separated in a liquid/solid separation step 80.
  • the liquid 74 is further processed as required or recycled.
  • the fourth fraction 78 is further processed separately from the liquid 74.
  • the particulate material 68 is simultaneously milled, scrubbed and screened into three fractions.
  • the first fraction 69 is processed separately from the second, third and fourth fractions 70, 76 and 78.
  • the third and fourth fraction 76 and 78 are also processed separately from one another.
  • the support 12 may be inclined to provide gravitational flow of the particulate material 68 inside the drum 14 in order to assist in the displacement of the particulate material 68 along the length of the drum 14 from the inlet 26 towards the outlet 30.
  • brackets 50 are used to attach the screen member 48 to the drum 14 at the inlet 26 than at the outlet 30.
  • the screen member 48 in this example extends the entire length of the drum 14 it is envisaged that the screen member 48 may extend only a limited length from the inlet 26 into the drum 14.
  • the screen member 48 is used initially to separate the first and second fractions 69 and 70 so that the milling of the first fraction 69 inside the screen member 48 is initially separated from that of the second fraction 70.
  • the second fraction 70, the lining 42 and the inner side wall 34 at the inlet 26 are in this manner also protected from immediate exposure to large and heavy particles.

Landscapes

  • Combined Means For Separation Of Solids (AREA)
  • Separation Of Particles Using Liquids (AREA)

Abstract

L'invention concerne un débourbeur rotatif pour matières particulaires, comprenant une structure de support sur laquelle est monté de manière rotative un corps cylindrique. Ce corps cylindrique comporte une entrée située à une de ses extrémités, une sortie située à l'autre de ses extrémités, une paroi latérale interne, une paroi latérale externe et un écran tubulaire allongé, relié à la paroi latérale interne, à une certaine distance de cette dernière, et qui s'étend à l'intérieur du corps cylindrique, entre l'entrée et la sortie du corps cylindrique. L'invention concerne également un procédé de traitement de matières particulaires faisant intervenir ce débourbeur rotatif.
PCT/ZA2003/000162 2002-11-04 2003-11-03 Debourbeur rotatif Ceased WO2004041436A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2003291209A AU2003291209A1 (en) 2002-11-04 2003-11-03 A rotary scrubber

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ZA200208923 2002-11-04
ZA2002/8923 2002-11-04

Publications (2)

Publication Number Publication Date
WO2004041436A2 true WO2004041436A2 (fr) 2004-05-21
WO2004041436A3 WO2004041436A3 (fr) 2004-06-17

Family

ID=32313377

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/ZA2003/000162 Ceased WO2004041436A2 (fr) 2002-11-04 2003-11-03 Debourbeur rotatif

Country Status (2)

Country Link
AU (1) AU2003291209A1 (fr)
WO (1) WO2004041436A2 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102784711A (zh) * 2012-08-05 2012-11-21 李金泉 洗矿擦洗分级机
CN108856093A (zh) * 2018-07-14 2018-11-23 利辛县众善医药科技有限公司 一种节水高效矿石清洗设备
CN109731767A (zh) * 2019-01-07 2019-05-10 浙江环耀环境建设有限公司 用于清洗石油污染沙石的滚筒清洗筛

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US13449A (en) * 1855-08-14 l seymour
US3001338A (en) * 1954-10-28 1961-09-26 Parker Ltd Frederick Plant for washing stone
US4159242A (en) * 1977-08-08 1979-06-26 Leon Walker Coal washing apparatus
FR2745204B1 (fr) * 1996-02-26 1998-04-03 Cogema Dispositif de separation et de dosage d'objets de tailles differentes tels que des coques et des embouts provenant du cisaillage d'assemblages de combustible nucleaire irradie

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102784711A (zh) * 2012-08-05 2012-11-21 李金泉 洗矿擦洗分级机
CN108856093A (zh) * 2018-07-14 2018-11-23 利辛县众善医药科技有限公司 一种节水高效矿石清洗设备
CN108856093B (zh) * 2018-07-14 2020-05-12 中电建安徽长九新材料股份有限公司 一种节水高效矿石清洗设备
CN109731767A (zh) * 2019-01-07 2019-05-10 浙江环耀环境建设有限公司 用于清洗石油污染沙石的滚筒清洗筛

Also Published As

Publication number Publication date
AU2003291209A1 (en) 2004-06-07
WO2004041436A3 (fr) 2004-06-17
AU2003291209A8 (en) 2004-06-07

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