CN108311295A - A kind of compound force field step reinforcing centrifugal ore separator - Google Patents

A kind of compound force field step reinforcing centrifugal ore separator Download PDF

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Publication number
CN108311295A
CN108311295A CN201810366666.7A CN201810366666A CN108311295A CN 108311295 A CN108311295 A CN 108311295A CN 201810366666 A CN201810366666 A CN 201810366666A CN 108311295 A CN108311295 A CN 108311295A
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rotating cylinder
force field
sorting
weight product
product
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CN201810366666.7A
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CN108311295B (en
Inventor
韦鲁滨
马立成
曾鸣
朱学帅
周颀峰
裴心雨
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China University of Mining and Technology Beijing CUMTB
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China University of Mining and Technology Beijing CUMTB
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B04CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04BCENTRIFUGES
    • B04B3/00Centrifuges with rotary bowls in which solid particles or bodies become separated by centrifugal force and simultaneous sifting or filtering
    • B04B3/08Centrifuges with rotary bowls in which solid particles or bodies become separated by centrifugal force and simultaneous sifting or filtering discharging solid particles by bowl walls in the form of endless bands
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B04CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04BCENTRIFUGES
    • B04B11/00Feeding, charging, or discharging bowls
    • B04B11/02Continuous feeding or discharging; Control arrangements therefor

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  • Centrifugal Separators (AREA)
  • Separation Of Solids By Using Liquids Or Pneumatic Power (AREA)

Abstract

A kind of compound force field step reinforcing centrifugal ore separator, belongs to compound force field centrifugal separation equipment field.Sorting rotating cylinder is mainly constituted by, lower two rotating cylinders, slurry feeds the pan feeding distributor rotated with upper rotating cylinder, is evenly distributed to wall surface and carries out film concentration;When particle enters in reflex circle, the radial pulsation under back-flushing effect promotes particle loosely and strengthens layering;The variable division piece being arranged at weight product discharge gate can adjust the split position of weight product in bed, so that weight product is continuously discharged, light product throws away by centrifugal force and selected again into lower rotating cylinder through water diversion part.Since centrifugal force suffered by upper and lower two rotating cylinders is different, lower rotating cylinder then assumes responsibility for opposite fine particle separation, can not only realize the continuous pulp discharge and step intensified sorting that particle is sorted in compound force field, improves sharpness of separation;And needed according to user, the ore separators can select essence, two kinds of products of tail or essence, in, three kinds of products of tail.

Description

A kind of compound force field step reinforcing centrifugal ore separator
Technical field
The present invention relates to a kind of compound force field steps to strengthen centrifugal ore separator, belongs to compound force field centrifugal separation equipment technology Field.
Background technology
Gravity separation is in gravitational field, using the difference of relative density, granularity, shape between different minerals particle in medium In the process that is detached of rate of settling difference.In gravitational field, the sorting for subparticle is only difficult by gravity So that it is effectively settled, reaches effective sorting.Compared to gravitational field, particle in centrifugal force field suffered centrifugal force far more than gravity. The introducing of centrifugal force field can accelerate the radial sedimentation of particle, amplify different densities particle sinking speed difference, make micro-size fraction Mineral also can effectively be sorted according to density variation, to reduce grain sorting lower limit, improve sharpness of separation.
Centrifugal classification equipment based on centrifugal force field exploitation has two classes, one kind be rotate in a device by slurry generate compared with Big centrifugal force expands differential settlement between particle, achievees the effect that sorting separation, such as cyclone and spiral concentrator;It is another kind of to be Sorting rotating cylinder rotation drives slurry rotation to generate powerful centrifugal force, and particle is promoted to detach.Since cyclone is to pass through forced feed Fluid rotary is caused to move, cyclone is although simple in structure, but relationship is multiple between structural parameters and operating parameter and separating effect Miscellaneous, flow field is difficult to, sharpness of separation with it is particularly thorny in treating capacity.For example, it need to be adopted to obtain good separating effect Strengthen centrifugal force field with small diameter cyclone, but diameter reduces the production capacity for constraining cyclone;Feed force is improved, is had Help improve the processing capacity of cyclone, but excessively high feed force causes to sort the raising of area's ore pulp turbulence level so that sorting effect Fruit is deteriorated.
Currently, being regulated to means to strengthen flow field, people have invented a series of dependence mechanical rotation excitation fluid rotary fortune Dynamic sorting unit, Knelson and Falcon are such representative centrifugal beneficiating equipments, and 60-300 times is generated in machinery rotation In the centrifugal field of acceleration of gravity, the intergranular rate of settling and very big reinforcing has been obtained by Density Separation effect;Draw simultaneously Entering fluidization back-flushing makes mobility of bed, the small particle of density become overflow with back-flushing, and the big particle of density overcomes back-flushing It is deposited in discharge in enrichment slot.The combination of centrifugal force field and the effect of fluidization back-flushing, effectively increases sharpness of separation.
Knelson and Falcon centrifugal ore separators have been applied successfully to the precious and rare metals recoveries such as gold, but Knelson and Falcon ore separators can't realize weight product continuous pulp discharge truly.Although Knelson and Falcon ore separators is adopted Continuous pulp discharge is realized with air valve, but air valve is easy to block, particularly with slime separation, weight product yield is larger, causes Separating effect is bad.The injection flow and adverse current continuous pulp discharge centrifugal ore separator of domestic-developed will be sunk using spraying water with high pressure Product is gone out in the product of drum inner wall, though solving the problems, such as continuous pulp discharge, still needs to realize under the slow-speed of revolution or shutdown status.This Outside, current mechanical rotating centrifugal sorting machine can only once be sorted in rotating cylinder, if need 2 times it is selected or scan, can only will Two sorting machine series connection are selected again, cause complex process, equipment investment and operating cost big.
To sum up, the major defect of existing centrifugal ore separator is to be unable to continuous pulp discharge to cause operation discontinuous, in ore dressing It can only once be sorted in machine, assorting room lacks the setting that step is strengthened.Therefore, it is necessary to the structure of centrifugal ore separator into Row improves, and realizes real intensified sorting and continuous pulp discharge, improves minerals separation precision.
Invention content
A kind of compound force field step provided by the invention strengthens centrifugal ore separator, and purpose is selected aiming at existing centrifugation Above-mentioned deficiency present in mine equipment, ore pulp, more force field step intensified sortings, Neng Goulian can effectively be disperseed by providing one kind The compound force field step of continuous sorting and discharge strengthens centrifugal ore separator, to improve sharpness of separation and production efficiency.
The present invention is achieved through the following technical solutions:
A kind of compound force field step strengthens centrifugal ore separator, structure include central feed tube (1), distributor (2), it is upper in turn Cylinder (3), lower interior rotating cylinder (4), upper outer rotaring tube (5), lower outer rotaring tube (6), water diversion part (7), weight product slot (8), light product slot (9), air-cored axis (10), motor (11), rotary joint (12), recoil water hole (13), reflex circle (14), variable division piece (15), Weight product discharge gate (16).It is characterized in that constituting sorting rotating cylinder by upper and lower two rotating cylinders, divided above and below by hollow axis connection Select rotating cylinder, air-cored axis are mounted on by bearing arrangement in rack, two recoil water pipes be mounted in air-cored axis respectively with two points Cylinder bottom is selected to connect, motor drives air-cored axis and sorting rotating cylinder to rotate together by V belt wheels, is arranged at weight product discharge gate Variable division piece can adjust openings of sizes, so as to adjust the split position of bed weight product, weight product be made continuously to arrange Go out.The weight product of upper rotating cylinder sorting is product of attaching most importance to from discharge gate discharge, and light product is thrown away by centrifugal force to be entered through water diversion part The lower rotating cylinder that step is strengthened selects again.
Center feed pipe (1) bottom end of the ore separators is connected with back taper pan feeding distributor (2), and material is evenly distributed Onto separation tube inner wall.
The ore separators is mainly made of upper and lower two rotating cylinders, and each rotating cylinder is again by interior (3,4), outer (5,6) two sleeves Composition, constitutes closed water cavity between inside and outside sleeve, and the inclination angle of interior rotating cylinder and vertical direction is 8-20 °.
Rotating cylinder middle and lower part is uniformly provided with 1-3 circle recoils water hole (13) in the ore separators, promotes ore pulp to move upwards, is visiing The effect of lattice promise shearing effect carries out film concentration.
The trapezoidal reflex circle (14) of a circle, the evenly distributed circle back-flushing in reflex circle lower part are arranged at rotating cylinder top in the ore separators 2-8 weight product discharge gate is symmetrically opened on hole, reflex circle top, and discharge gate size is 3-8mm.
Rotating cylinder reflex ring recess bottom is provided with 1-3 and encloses evenly distributed recoil water hole (13) in the ore separators, and recoil water hole is straight greatly Diameter size is 0.5-1.5mm;When particle enters in reflex circle, bed radial pulsation under the effect of fluidization back-flushing of formation, Promote particle loosely and strengthens layering.
Variable division piece (15), cutting plate size and discharge are set in the ore separators at the discharge gate of rotating cylinder reflex circle top Mouth size is identical;By adjusting variable division piece openings of sizes, and then the split position of bed weight product is adjusted, realizes product Continuous discharge.
The air-cored axis of the ore separators are made of Liang Ge different sizes air-cored axis (10) socket, and the back-flushing of interior air-cored axis is logical Road is connected with the outer barrel bottom of upper sorting rotating cylinder;The recoil aquaporin of outer air-cored axis is connected with the outer barrel bottom of lower sorting rotating cylinder.
The upper and lower rotating cylinder of the ore separators is detachable, upper rotating cylinder (3) and interior air-cored axis (10) end by reverse thread (with Direction of rotation is opposite) connection;Lower rotating cylinder (4) is by interior air-cored axis (10) and outer space core shaft end by reverse thread (with rotation side To on the contrary) connection, it is equipped with fixed and sealing ring in the inner sleeve bottom of lower sorting rotating cylinder.
Rotary joint (12) is installed in the inside and outside air-cored axis lower part of the ore separators respectively, controls upper and lower sorting rotating cylinder recoil Water flow velocity size.
Weight product is provided with weight product channel (8) after rotating cylinder sorting on the ore separators, is discharged by weight product channel;Gently Water diversion part (7) gravity flow of product setting enters lower separation tube (4) and selects again, and light product is discharged from light product channel (9) after sorting It collects, weight product is discharged by weight product channel (8), or separately channel is added to be discharged as intermediate product.
The operation principle of the present invention is that motor drives rotating cylinder rotation up and down to generate centrifugal force, feeds rotating cylinder pan feeding point Coarse slime on orchestration is evenly distributed to wall surface with cylinder rotation, is moved upwards under the promotion of centrifugal force axial thrust load, light Grain is discharged under back-flushing and centrifugation force effect from overflow at the top of upper rotating cylinder, and weight particle overcomes back-flushing to act on shape in reflex circle At bed, the variable division piece being arranged at weight product discharge gate can adjust openings of sizes, so as to adjust bed weight The split position of product, segmented is continuously discharged from weight product discharge gate.The weight product of upper rotating cylinder sorting is discharged from discharge gate Attach most importance to product, the lower rotating cylinder that light product enters step reinforcing selects again, and assorting room is similar to upper rotating cylinder.
Compared with existing centrifugal ore separator, the present invention has the following advantages:
1, structure innovation constitutes sorting rotating cylinder using dismountable upper and lower two rotating cylinders, forms the sorting of two chambers, above and below Sorting rotating cylinder successively provides step centrifugal force, intensified sorting process.
2, by the way that variable division piece is arranged in discharge gate, the split position of bed weight product can be adjusted, realizes weight It is continuously discharged from discharge gate after product segmentation.
3, air-cored axis and rotary joint connect, and control upper and lower sorting rotating cylinder recoil water flow velocity respectively using rotary joint, with Meet upper and lower sorting rotating cylinder and sorts the fluidization water speed.
Description of the drawings
Fig. 1 is the front view that a kind of compound force field step of the present invention strengthens centrifugal ore separator;
Fig. 2 is the interior barrel configuration of the present invention;
Fig. 3 is variable division piece schematic diagram at discharge gate in the reflex circle of the present invention.
Specific implementation mode
Preferably to describe the present invention, below in conjunction with the accompanying drawings to compound force field step of the present invention strengthen centrifugal ore separator do into One step is described in detail.
A kind of compound force field step of the present invention as shown in Figure 1 strengthens the main structure figure of centrifugal ore separator and combines Fig. 2 Find out, a kind of compound force field step of the present invention strengthens centrifugal ore separator by central feed tube (1), distributor (2), upper interior rotating cylinder (3), lower interior rotating cylinder (4), upper outer rotaring tube (5), lower outer rotaring tube (6), water diversion part (7), weight product slot (8), light product slot (9), Air-cored axis (10), rotary joint (12), recoil water hole (13), reflex circle (14), variable division piece (15), produce motor (11) again Object discharge gate (16) is constituted.Upper and lower two rotating cylinders are made of inside and outside two sleeves respectively, and closing water is constituted between inside and outside sleeve Chamber, back-flushing enter inner sleeve through water hole.
The inner sleeve of the ore separators and the inclination angle of vertical direction are 15 °, and interior rotating cylinder middle and lower part is uniformly provided with circle recoil Water hole (13), back-flushing pore diameter size are 1.5mm, spacing 10mm;Ore pulp is promoted to move upwards, in Bai Genuo shearing effects Effect carries out in film concentration;Upper cartridge has a circle reflex circle (14), the evenly distributed circle recoil water hole in reflex circle lower part (13), back-flushing pore diameter size is 1mm, spacing 10mm;Particle into reflex circle makes the bed to be formed in fluidization The lower radial pulsation of back-flushing effect, promotes particle loosely and strengthens layering, two weight product discharge gates (16) are symmetrically opened on top, are arranged Material mouth size is 5mm, and variable division piece (15) is arranged at discharge gate, by adjusting variable division piece openings of sizes, and then is adjusted The split position of bed weight product realizes that product is continuously discharged.
The upper and lower rotating cylinder of the ore separators is connected by air-cored axis (10), and air-cored axis are by two different size of air-cored axis Socket composition, the recoil aquaporin of interior air-cored axis are connected with the outer barrel bottom of upper sorting rotating cylinder;The recoil aquaporin of outer air-cored axis It is connected with the outer barrel bottom of lower sorting rotating cylinder, air-cored axis are mounted on by bearing arrangement in rack, and two recoil water pipes are mounted on It is connect respectively with two sorting cylinder bottoms in air-cored axis, rotary joint (12) is installed in inside and outside air-cored axis lower part respectively, control Upper and lower sorting rotating cylinder recoil water flow velocity size.
The ore separators drives air-cored axis and sorting rotating cylinder to rotate together by motor (11) by V belt wheels, and material is fed It is evenly distributed to wall surface with cylinder rotation on upper rotating cylinder pan feeding distributor (2), is transported upwards under the promotion of centrifugal force axial thrust load Dynamic, light particle is discharged under back-flushing and centrifugation force effect from overflow at the top of upper rotating cylinder, and it is next that weight particle overcomes back-flushing to act on Bed is formed in multiple circle, segmented (15) are continuously discharged from weight product discharge gate (16).The weight product of upper rotating cylinder sorting is from row Material mouth discharge is attached most importance to product, light product thrown away by centrifugal force enter through water diversion part (7) step reinforcing lower rotating cylinder select again into The lower rotating cylinder for entering step reinforcing selects again, and assorting room is similar to upper rotating cylinder.

Claims (12)

1. a kind of compound force field step strengthens centrifugal ore separator, structure includes central feed tube (1), distributor (2), upper interior rotating cylinder (3), lower interior rotating cylinder (4), upper outer rotaring tube (5), lower outer rotaring tube (6), water diversion part (7), weight product slot (8), light product slot (9), Air-cored axis (10), rotary joint (12), recoil water hole (13), reflex circle (14), variable division piece (15), produce motor (11) again Object discharge gate (16).It is characterized in that constituting sorting rotating cylinder by upper and lower two rotating cylinders, by hollow axis connection, sorting turns above and below Cylinder, air-cored axis are mounted on by bearing arrangement in rack, and two recoil water pipes are mounted in air-cored axis to be turned with two sortings respectively The connection of cylinder bottom, motor drive air-cored axis and sorting rotating cylinder to rotate together, feed rotating cylinder pan feeding distributor by V belt wheels Ore pulp is with rotating cylinder rotating separation, and setting variable division piece can adjust openings of sizes at weight product discharge gate, so as to adjust The split position for saving bed weight product, makes weight product continuously be discharged.The weight product of upper rotating cylinder sorting is discharged from discharge gate is Weight product, light product by centrifugal force throw away through water diversion part enter step strengthen lower rotating cylinder select again.
2. a kind of compound force field step according to claim 1 strengthens centrifugal ore separator, it is characterised in that:The ore separators Center feed pipe (1) bottom end be connected with back taper pan feeding distributor (2), material is evenly distributed on separation tube inner wall.
3. a kind of compound force field step according to claim 1 strengthens centrifugal ore separator, it is characterised in that:The ore separators It is mainly made of upper and lower two rotating cylinders, each rotating cylinder is made of interior (3,4), outer (5,6) two sleeves again, between inside and outside sleeve Constitute closed water cavity.
4. a kind of compound force field step according to claim 3 strengthens centrifugal ore separator, it is characterised in that:The ore separators Interior rotating cylinder and vertical direction inclination angle be 8-20 °.
5. a kind of compound force field step according to claim 1 and 3 strengthens centrifugal ore separator, it is characterised in that:The choosing Rotating cylinder middle and lower part is uniformly provided with 1-3 circle recoils water hole (13) in mine machine, and back-flushing pore diameter size is 1-3mm, spacing 10- 20mm;Back-flushing promotes ore pulp to move upwards, and film concentration is carried out under the effect of Bai Genuo shearing effects.
6. a kind of compound force field step according to claim 1 and 3 strengthens centrifugal ore separator, it is characterised in that:The choosing The trapezoidal reflex circle (14) of a circle, the evenly distributed circle recoil water hole in reflex circle lower part, reflex circle top are arranged at rotating cylinder top in mine machine Symmetrical to be provided with 2-8 weight product discharge gate, discharge gate size is 3-10mm.
7. a kind of compound force field step according to claim 1 and 3 or 6 strengthens centrifugal ore separator, it is characterised in that:It is described 1-3 is provided in ore separators below rotating cylinder reflex circle discharge gate and encloses evenly distributed recoil water hole (13), recoil water hole major diameter size For 0.5-1.5mm;When particle enters in reflex circle, bed radial pulsation under the effect of fluidization back-flushing of formation promotes Grain is loosely layered with reinforcing.
8. a kind of compound force field step according to claim 1 and 3 or 6 strengthens centrifugal ore separator, it is characterised in that:It is described Variable division piece (15) is set in ore separators at rotating cylinder reflex circle discharge gate, and cutting plate size is identical as discharge gate size;Pass through Variable division piece openings of sizes is adjusted, and then adjusts the split position of bed weight product, realizes that product is continuously discharged.
9. a kind of compound force field step according to claim 1 strengthens centrifugal ore separator, it is characterised in that:The ore separators Air-cored axis by Liang Ge different sizes air-cored axis (10) socket form, interior air-cored axis recoil aquaporin with it is upper sorting rotating cylinder outside Cylinder bottom is connected;The recoil aquaporin of outer air-cored axis is connected with the outer barrel bottom of lower sorting rotating cylinder.
10. a kind of compound force field step according to claim 1 strengthens centrifugal ore separator, it is characterised in that:The ore dressing The upper and lower rotating cylinder of machine is detachable, and upper rotating cylinder (3) is (opposite to the direction of rotation) even by reverse thread with interior air-cored axis (10) end It connects;Lower rotating cylinder (4) is connect with outer space core shaft end by reverse thread (opposite to the direction of rotation) by interior air-cored axis (10), under The inner sleeve bottom for sorting rotating cylinder is equipped with fixed and sealing ring.
11. a kind of compound force field step according to claim 1 or 9 strengthens centrifugal ore separator, it is characterised in that:The choosing Rotary joint (12) is installed in the inside and outside air-cored axis lower part of mine machine respectively, controls upper and lower sorting rotating cylinder recoil water flow velocity size.
12. a kind of compound force field step according to claim 1 strengthens centrifugal ore separator, it is characterised in that:The ore dressing Weight product is provided with weight product channel (8) after rotating cylinder sorting on machine, is discharged by weight product channel;The diversion division of light product setting Divide (7) gravity flow to enter lower separation tube (4) to select again, light product is discharged from light product channel (9) and collects after sorting, and weight product passes through again Product pathways (8) discharge is collected, or separately channel is added to be discharged as intermediate product.
CN201810366666.7A 2018-04-23 2018-04-23 Composite force field step reinforced centrifugal ore separator Expired - Fee Related CN108311295B (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109833980A (en) * 2018-12-29 2019-06-04 苏州丰亚达环保科技有限公司 The exocentric structure of high-precision three phase separation
CN110801649A (en) * 2019-11-14 2020-02-18 安徽理工大学 Ore pulp centrifugal concentration separator that laboratory was used

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US5338284A (en) * 1992-07-30 1994-08-16 Benjamin Knelson Centrifugal separator with substantially continuous discharge of fines
RU2184616C2 (en) * 2000-04-10 2002-07-10 Федеральное государственное унитарное Научно-исследовательское геологическое предприятие "Тульское НИГП" Centrifugal separator
US20060194685A1 (en) * 2003-03-17 2006-08-31 Lewis-Gray Alexander H Continuous centrifuge
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CN104437834A (en) * 2014-11-13 2015-03-25 江西理工大学 Centrifugal ore-dressing device and ore-dressing method thereof
CN104984837A (en) * 2015-06-29 2015-10-21 程名亭 Continuous ore discharge type centrifuge
CN204933729U (en) * 2015-07-10 2016-01-06 中国矿业大学 A kind of Bed for Fine Coal centrifugal classifier of discontinuous discharge
CN105396702A (en) * 2015-12-10 2016-03-16 中国矿业大学 Fine coal centrifugal separation equipment capable of discharging materials continuously
CN106925436A (en) * 2017-04-06 2017-07-07 昆明理工大学 A kind of sharp miniature centrifugal beneficiating equipment
CN107309098A (en) * 2017-07-12 2017-11-03 深圳市中矿海纳技术有限公司 Continuous pulp discharge type centrifugal ore separator

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Publication number Priority date Publication date Assignee Title
SU977027A1 (en) * 1981-04-22 1982-11-30 Иркутский Ордена Трудового Красного Знамени Политехнический Институт Centrifugal separator
US5338284A (en) * 1992-07-30 1994-08-16 Benjamin Knelson Centrifugal separator with substantially continuous discharge of fines
RU2184616C2 (en) * 2000-04-10 2002-07-10 Федеральное государственное унитарное Научно-исследовательское геологическое предприятие "Тульское НИГП" Centrifugal separator
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CN204933729U (en) * 2015-07-10 2016-01-06 中国矿业大学 A kind of Bed for Fine Coal centrifugal classifier of discontinuous discharge
CN105396702A (en) * 2015-12-10 2016-03-16 中国矿业大学 Fine coal centrifugal separation equipment capable of discharging materials continuously
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CN107309098A (en) * 2017-07-12 2017-11-03 深圳市中矿海纳技术有限公司 Continuous pulp discharge type centrifugal ore separator

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109833980A (en) * 2018-12-29 2019-06-04 苏州丰亚达环保科技有限公司 The exocentric structure of high-precision three phase separation
CN109833980B (en) * 2018-12-29 2023-09-15 苏州丰亚达环保科技有限公司 Centrifugal structure for high-precision three-phase separation
CN110801649A (en) * 2019-11-14 2020-02-18 安徽理工大学 Ore pulp centrifugal concentration separator that laboratory was used

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