CN110420747A - The system and method that graphite and diamond mixed-powder are classified - Google Patents
The system and method that graphite and diamond mixed-powder are classified Download PDFInfo
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- CN110420747A CN110420747A CN201910625790.5A CN201910625790A CN110420747A CN 110420747 A CN110420747 A CN 110420747A CN 201910625790 A CN201910625790 A CN 201910625790A CN 110420747 A CN110420747 A CN 110420747A
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- cylinder
- underflow
- graphite
- mixed slurry
- diamond
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
- B02C23/18—Adding fluid, other than for crushing or disintegrating by fluid energy
- B02C23/20—Adding fluid, other than for crushing or disintegrating by fluid energy after crushing or disintegrating
-
- 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
Abstract
System and method the invention discloses being classified to graphite and diamond mixed-powder.Wherein, system includes: grinding device and rotation multistage separator, and rotation multistage separator includes: ontology, from top to bottom successively includes upper cylinder, transition cylinder and underflow cylinder；The diameter of upper cylinder is greater than the diameter of underflow cylinder, and the diameter of transition cylinder is gradually reduced along the direction of upper cylinder to underflow cylinder；The open top of upper cylinder, and apical lateral wall is equipped with upward outwardly extending flange, the apical lateral wall formation overflow launder of flange and upper cylinder；Mixed slurry inlet pipe, one end are connected with mixed slurry outlet, and the other end is protruded into upper cylinder by the top of upper cylinder；It is rotated into water pipe, is located on the lower sides of underflow cylinder, and is extended along the tangential direction of underflow column side wall；And upper outflux, middle section outlet and underflow outlet.The system with simple and effective can carry out multipass sort to graphite and diamond matrix material.
Description
Technical field
The present invention relates to chemical fields, specifically, the present invention relates to be classified to graphite and diamond mixed-powder
System and method.
Background technique
Production diamond generally use instantaneous quiescent or dynamic super-voltage superelevation temperature technique, make carbon raw material (such as
Graphite etc.) directly become being changed into diamond from solid-state or molten state, finally obtain micron-sized polycrystal powder.By taking graphite as an example
For producing diamond, only have about 1/5th graphite that can be changed into diamond under high pressure, so needing to produce
Graphite and diamond efficiently separate in product.Existing technology includes: that the mixed acid graphite oxide such as (1) perchloric acid or nitric acid-sulfuric acid is
Gas, thus realize separation, but it is a large amount of unfavorable to environment using acid, and operation difficulty is big；(2) shaking table, the side such as gravity treatment are used
Formula separates, but higher cost, carat loss be big；(3) using vapor-phase chemical oxidative method separation diamond and graphite, belong to
High-temperature chemical reaction, at high cost, low efficiency；(4) microwave oxidizing roasting method complex technical process is used, equipment requirement is high, separation
Cost is big.
Current existing separation method, which is substantially all, is related to chemical reaction process, more poisonous fumes, spent acid, dust pollution,
Working environment is severe, subsequent pollution treatment higher cost, and separative efficiency is low.Thus, it is existing that graphite and diamond are classified
Means still have much room for improvement.
Summary of the invention
The present invention is directed to solve at least some of the technical problems in related technologies.For this purpose, of the invention
One purpose is the system and method for proposing to be classified graphite and diamond.This is classified graphite and diamond
System with simple and effective can carry out multipass sort to graphite and diamond matrix material.
In one aspect of the invention, the invention proposes what a kind of pair of graphite and diamond mixed-powder were classified is
System.According to an embodiment of the invention, the system includes:
There is mixed-powder entrance and mixed slurry to export for grinding device, the grinding device；
Rotation multistage separator, the rotation multistage separator include:
Ontology, the ontology from top to bottom successively include upper cylinder, transition cylinder and underflow cylinder, the upstream cylinder
Diameter be greater than the diameter of the underflow cylinder, the diameter of the transition cylinder is along the upper cylinder to the underflow cylinder
Direction is gradually reduced；Wherein, the apical lateral wall of the open top of the upper cylinder, the upstream cylinder is equipped with upwards outward
The apical lateral wall of the flange of extension, the flange and the upper cylinder forms overflow launder；
One end of mixed slurry inlet pipe, the mixed slurry inlet pipe is connected with mixed slurry outlet, and the other end is by institute
The top for stating upper cylinder is protruded into the upper cylinder；
It is rotated into water pipe, the water pipe that is rotated into is located on the lower sides of the underflow cylinder, and along the underflow column
The tangential direction of body sidewall extends；
Upper outflux, the upper outflux are located at the bottom of overflow launder；
Middle section outlet, the middle section outlet is located on the middle and upper part side wall of the upper cylinder, and is located at the upper outflow
The lower section of mouth；
Underflow outlet, the underflow outlet are located at the top of the underflow cylinder, and the underflow outlet is communicated with underflow pipe
Road, the underflow pipeline extend along the tangential direction of the underflow cylinder.
The system according to an embodiment of the present invention being classified to graphite and diamond mixed-powder is filled first with grinding
It sets and the mixed-powder containing graphite and diamond is ground, obtain mixed slurry.Mixed slurry to be fractionated passes through
Mixed slurry inlet pipe is supplied into rotation multistage separator, while being pumped into wash water into underflow cylinder by being rotated into water pipe,
Be rotated into water pipe along underflow column side wall tangential direction extend structure design so that wash water water flow along underflow cylinder inner wall
Tangent line enters and is formed the vortex water flow rotated upwards, mixes with the mixed slurry being passed through.In rotation multistage separator, mix
Specific gravity is larger in conjunction slurry or the biggish diamond particles of partial size deposit downwards, is discharged by underflow outlet；Specific gravity it is smaller or
The lesser graphite particle of partial size then follows the vortex water flow rotated upwards to move upwards, and overflows into overflow from upper cylinder top
Slot, and be discharged from upper outflux；And it is medium at the specific gravity and partial size of the part graphite in mixed slurry, it will not both sink down into underflow
Exit, the top that will not float up to upper cylinder are overflowed, this part graphite is then by being located in upper cylinder middle and upper part
Section outlet discharge.As a result, by may be implemented using the system of the invention being classified to graphite and diamond mixed-powder
When mixed slurry continuous feed, graphite in mixed slurry and diamond are separated incessantly, while to the graphite of different-grain diameter
It is classified, the classification of the separation and wherein graphite that make mixed slurry is completed at the same time, to significantly improve classification efficiency, and can
The graphite particle of different-grain diameter is obtained by adjusting technological parameter.
In addition, the system according to the above embodiment of the present invention being classified to graphite and diamond mixed-powder can be with
With following additional technical characteristic:
In some embodiments of the invention, the middle section outlet includes multiple, and multiple middle section outlets are on described
It is distributed along longitudinal direction on the side wall of fluidization tower body.
In some embodiments of the invention, the diameter ratio of the upper cylinder and the underflow cylinder is (1.2~2):
1。
In some embodiments of the invention, the side wall of the transition cylinder and the angle of vertical direction are 25~35 °.
In some embodiments of the invention, the mixed slurry inlet pipe protrudes into 4/5~3/4 length in the upper cylinder
Place.
In some embodiments of the invention, the system being classified to graphite and diamond mixed-powder is further
It include: water supply pipe；The side wall that the water supply pipe passes through the upper cylinder protrudes into the upper cylinder, and extends to described mixed
Below the outlet for closing slurry inlet pipe.
In another aspect of this invention, the invention proposes a kind of systems using above-described embodiment to graphite and diamond
The method being classified.According to an embodiment of the invention, this method comprises: by being supplied containing the mixed-powder of graphite and diamond
It is ground into grinding device, to obtain mixed slurry；The mixed slurry is supplied by mixed slurry inlet pipe
Into rotation multistage separator, wash water is supplied to the rotation multistage separator using water pipe is rotated into, is washed using described
The upward eddy flow water flow of water carries out classification processing to the mixed slurry, to obtain the graphite and diamond of different-grain diameter respectively
Particle.
The method according to an embodiment of the present invention being classified to graphite and diamond mixed-powder is filled first with grinding
It sets and the mixed-powder containing graphite and diamond is ground, obtain mixed slurry.Mixed slurry to be fractionated passes through
Mixed slurry inlet pipe is supplied into rotation multistage separator, while being pumped into wash water into underflow cylinder by being rotated into water pipe,
Be rotated into water pipe along underflow column side wall tangential direction extend structure design so that wash water water flow along underflow cylinder inner wall
Tangent line enters and is formed the vortex water flow rotated upwards, mixes with the mixed slurry being passed through.In rotation multistage separator, mix
Specific gravity is larger in conjunction slurry or the biggish diamond particles of partial size deposit downwards, is discharged by underflow outlet；Specific gravity it is smaller or
The lesser graphite particle of partial size then follows the vortex water flow rotated upwards to move upwards, and overflows into overflow from upper cylinder top
Slot, and be discharged from upper outflux；And it is medium at the specific gravity and partial size of the part graphite in mixed slurry, it will not both sink down into underflow
Exit, the top that will not float up to upper cylinder are overflowed, this part graphite is then by being located in upper cylinder middle and upper part
Section outlet discharge.As a result, by may be implemented using the system of the invention being classified to graphite and diamond mixed-powder
When mixed slurry continuous feed, graphite in mixed slurry and diamond are separated incessantly, while to the graphite of different-grain diameter
It is classified, the classification of the separation and wherein graphite that make mixed slurry is completed at the same time, to significantly improve classification efficiency, and can
The graphite particle of different-grain diameter is obtained by adjusting technological parameter.
In addition, the method according to the above embodiment of the present invention being classified to graphite and diamond mixed-powder can be with
With following additional technical characteristic:
In some embodiments of the invention, by adjusting the charging rate of the mixed slurry and to the Rotatable water inlet
It is passed through the flow velocity of wash water in pipe, adjusts the partial size of the isolated graphite and diamond particles.
In some embodiments of the invention, the charging rate of the mixed slurry is 300~500mL/min, Xiang Suoshu
Being rotated into and being passed through the flow velocity of wash water in water pipe is 220~280mL/min, by the graphite particle for the small particle that upper outflux is isolated
Partial size is 10.0~25.0 μm；It is 25.0~50.0 μm by the partial size that the graphite particle of middle partial size is isolated in middle section outlet；The bottom of by
The partial size that outflux isolates diamond particles is greater than 45.0 μm.
In some embodiments of the invention, the charging rate of the mixed slurry is 450~500mL/min, Xiang Suoshu
Being rotated into and being passed through the flow velocity of wash water in water pipe is 200~220mL/min, by the graphite particle for the small particle that upper outflux is isolated
Partial size is 10.0~15.0 μm；It is 15.0~40.0 μm by the partial size that the graphite particle of middle partial size is isolated in middle section outlet；The bottom of by
The partial size that outflux isolates diamond particles is greater than 30.0 μm.
Additional aspect and advantage of the invention will be set forth in part in the description, and will partially become from the following description
Obviously, or practice through the invention is recognized.
Detailed description of the invention
Above-mentioned and/or additional aspect of the invention and advantage will become from the description of the embodiment in conjunction with the following figures
Obviously and it is readily appreciated that, in which:
Fig. 1 is the structural schematic diagram of the system according to an embodiment of the invention being classified to graphite and diamond；
Fig. 2 is that rotation multistage separates in the system according to an embodiment of the invention being classified to graphite and diamond
Device underflow column structure schematic diagram.
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to is used to explain the present invention, and is not considered as limiting the invention.
In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside", " axis
To ", " radial direction ", the orientation or positional relationship of the instructions such as " circumferential direction " be to be based on the orientation or positional relationship shown in the drawings, be only for
Convenient for the description present invention and simplify description, rather than the device or element of indication or suggestion meaning there must be specific side
Position is constructed and operated in a specific orientation, therefore is not considered as limiting the invention.
In the description of the present invention, the meaning of " plurality " is at least two, such as two, three etc., unless otherwise clear
It is specific to limit.
In the present invention unless specifically defined or limited otherwise, the terms such as " installation ", " connected ", " connection ", " fixation "
It shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or is integral；It can be mechanical connection,
It is also possible to be electrically connected；It can be directly connected, can also can be inside two elements indirectly connected through an intermediary
The interaction relationship of connection or two elements, unless otherwise restricted clearly.For the ordinary skill in the art,
The specific meanings of the above terms in the present invention can be understood according to specific conditions.
In the present invention unless specifically defined or limited otherwise, fisrt feature in the second feature " on " or " down " can be with
It is that the first and second features directly contact or the first and second features pass through intermediary mediate contact.Moreover, fisrt feature exists
Second feature " on ", " top " and " above " but fisrt feature be directly above or diagonally above the second feature, or be merely representative of
First feature horizontal height is higher than second feature.Fisrt feature can be under the second feature " below ", " below " and " below "
One feature is directly under or diagonally below the second feature, or is merely representative of first feature horizontal height less than second feature.
In one aspect of the invention, the invention proposes what a kind of pair of graphite and diamond mixed-powder were classified is
System.According to an embodiment of the invention, the system includes: grinding device 100 and rotation multistage separator 200 with reference to Fig. 1.Its
In, grinding device 100 has mixed-powder entrance (attached to be not shown in the figure) and mixed slurry outlet (attached to be not shown in the figure).Rotation
Multi-stage separation device 200 includes:
Ontology 10, ontology 10 from top to bottom successively include upper cylinder 11, transition cylinder 12 and underflow cylinder 13, upper fluidization tower
The diameter of body 11 is greater than the diameter of underflow cylinder 13, and the diameter of transition cylinder 12 is along upper cylinder 11 to the direction of underflow cylinder 13
It is gradually reduced；Wherein, the open top of upper cylinder 11, the apical lateral wall of upper cylinder 11 are equipped with outwardly extending upwards turn over
The apical lateral wall of side 41, flange 41 and upper cylinder 11 forms overflow launder 40；
One end of mixed slurry inlet pipe 20, mixed slurry inlet pipe 20 is connected with mixed slurry outlet, and the other end is by upper fluidization tower
The top of body 11 is protruded into upper cylinder 11；
It is rotated into water pipe 30, water pipe 30 is rotated into and is located on the lower sides of underflow cylinder 13, and along 13 side of underflow cylinder
The tangential direction of wall extends；
Upper outflux 50, upper outflux 50 are located at the bottom of overflow launder 40；
Middle section outlet 60, middle section outlet 60 is located on the middle and upper part side wall of upper cylinder 11, and is located at upper outflux 50
Lower section；
Underflow outlet 70, underflow outlet 70 are located at the top of underflow cylinder 13, and it is (attached that underflow outlet 70 is communicated with underflow pipeline
It is not shown in the figure), underflow pipeline extends along the tangential direction of underflow cylinder 13.
The system according to an embodiment of the present invention being classified to graphite and diamond mixed-powder is filled first with grinding
It sets and the mixed-powder containing graphite and diamond is ground, obtain mixed slurry.Mixed slurry to be fractionated passes through
Mixed slurry inlet pipe is supplied into rotation multistage separator, while being pumped into wash water into underflow cylinder by being rotated into water pipe,
Be rotated into water pipe along underflow column side wall tangential direction extend structure design so that wash water water flow along underflow cylinder inner wall
Tangent line enters and is formed the vortex water flow rotated upwards, mixes with the mixed slurry being passed through.In rotation multistage separator, mix
Specific gravity is larger in conjunction slurry or the biggish diamond particles of partial size deposit downwards, is discharged by underflow outlet；Specific gravity it is smaller or
The lesser graphite particle of partial size then follows the vortex water flow rotated upwards to move upwards, and overflows into overflow from upper cylinder top
Slot, and be discharged from upper outflux；And it is medium at the specific gravity and partial size of the part graphite in mixed slurry, it will not both sink down into underflow
Exit, the top that will not float up to upper cylinder are overflowed, this part graphite is then by being located in upper cylinder middle and upper part
Section outlet discharge.As a result, by may be implemented using the system of the invention being classified to graphite and diamond mixed-powder
When mixed slurry continuous feed, graphite in mixed slurry and diamond are separated incessantly, while to the graphite of different-grain diameter
It is classified, the classification of the separation and wherein graphite that make mixed slurry is completed at the same time, to significantly improve classification efficiency, and can
The graphite particle of different-grain diameter is obtained by adjusting technological parameter.
Below with reference to Fig. 1 and 2 further to the system according to an embodiment of the present invention being classified to graphite and diamond
It is described in detail.
According to an embodiment of the invention, ontology 10 is from top to bottom respectively upper cylinder 11, transition cylinder 12 and underflow column
Body 13, the diameter of underflow cylinder 13 are less than the diameter of upper cylinder 11, and 12 reduced diameter of transition cylinder is to connect upstream
The bottom end of cylinder 11 and the top of underflow cylinder 13.It can be significantly improved by the way that the lesser underflow cylinder 13 of diameter is arranged in bottom end
Wash water enters the vortex effect of rear water flow, and then can break up completely graphite and diamond mixed slurry, so that solid particle
Disperse as far as possible, improves grading effect.
According to an embodiment of the invention, the specific size specification of upper cylinder 11 is not particularly restricted.In some implementations
In example, the draw ratio of upper cylinder 11 is (5~25): 1.It is possible thereby to provide sufficiently long flow path, guarantee diamond and
Graphite solid particle can effectively be dispersed and be floated, sink after be classified.Preferred embodiment in accordance with the present invention, on
The draw ratio of fluidization tower body 11 is preferably 10:1, it is possible thereby to significantly improve analytical effect.Inventors have found that if upper cylinder 11
Draw ratio is excessive, then equipment is meticulous, and wash water flow velocity can increase in equipment, and then can take weight particle out of overflow；And upper cylinder
11 draw ratio is too small, then equipment is short and thick, and the water flow rate of climb reduces, and light particle can decline underflow.Therefore, draw ratio should not mistake
It is big or too small, control for 10:1 it is best, so as to further increase the separating effect of diamond and graphite mixed slurry.
According to an embodiment of the invention, middle section outlet 60 may include it is multiple, the outlet 60 of multiple middle sections is in upper cylinder 11
Side wall on be distributed along longitudinal direction.60 are exported by the way that multiple middle sections are arranged, the graphite particle of different-grain diameter can be isolated simultaneously, into
And meets the needs of obtaining different-grain diameter graphite microparticles.
According to an embodiment of the invention, the diameter ratio of upper cylinder 11 and underflow cylinder 13 can be (1.2~2): 1.
According to an embodiment of the invention, the side wall of transition cylinder 12 and the angle of vertical direction can be 25~35 °, preferably
It is 30 °.Specifically, the side wall of transition cylinder 12 and the angle of vertical direction be as shown in figure 1 shown in α, the side of transition cylinder 12 as a result,
Wall has tilt angle appropriate, ascending current can be enable successfully to transit to upper cylinder 11, and will not transition
Water velocity is lost, so as to further increase the classification efficiency of graphite and diamond mixed slurry.
According to a particular embodiment of the invention, as shown in Figure 1, upper cylinder 11 can pass through flange 14 by the sub- cylinder of more piece
Connection forms, and rubber mat bolt pinch seal is used between flange 14.Thus, it is possible to by the number that increases or reduce sub- cylinder come
The height of upper cylinder 11 is adjusted, and then the classification needs of different solid matters, such as specific gravity or partial size can be flexibly met
Differ unconspicuous solid particle.At the same time it can also improve diamond and graphite mixing by the height for lengthening upper cylinder 11
The grading effect of slurry.
According to a particular embodiment of the invention, transition cylinder 12 and the upper bottom end of cylinder 11 and the top of underflow cylinder 13
It is connected by welding.
According to an embodiment of the invention, mixed slurry inlet pipe 20 is protruded into upper cylinder 11 by top, and then by diamond
It is passed through in rotation multistage separator ontology with graphite mixed slurry.Specifically, mixed slurry inlet pipe 20 can be by outside
Fixed bracket is arranged to be protruded into upper cylinder 11.Inventors have found that mixed slurry inlet pipe 20 can specifically protrude into fluidization tower
Length (i.e. length shown in L as shown in figure 1) in body 11, which has the grading effect of mixed slurry, to be significantly affected.If mixed slurry into
The length that pipe 20 protrudes into upper cylinder 11 is too long (i.e. the position of 20 outlet end of mixed slurry inlet pipe is too low), will lead to mixed slurry
The settling height of middle particle is shorter, and light particle is possible to be mixed into underflow and be pulled away；Mixed slurry inlet pipe 20 protrudes into fluidization tower
The length of body 11 is too short (i.e. the position of 20 outlet end of mixed slurry inlet pipe is excessively high), will lead to weight particle it is too close apart from overflow port,
Make to weigh particle on a small quantity and light particle overflow is followed to go out, light particle product is deteriorated.Inventor passes through further investigation discovery, mixed slurry
Inlet pipe 20 protrude into it is most appropriate at 4/5~3/4 length in the upper cylinder, it is possible thereby to further increase diamond and graphite
The separating effect of mixed slurry.
It is arranged on the side wall of 13 lower part of underflow cylinder according to an embodiment of the invention, being rotated into water pipe 30, and along underflow
The tangential direction of 13 side wall of cylinder extends so that by be rotated into water flow that water pipe 30 is passed through along underflow cylinder 13 inner wall tangent line into
Enter, as shown in Figure 2.And in equipment running process, need constantly to be pumped into wash water to being rotated into water pipe 30, and along inner wall
Tangential direction, which enters, can then make water flow after entering underflow cylinder 13 with the power of upward eddying motion, and then can have
Effect drives Motion of solid particle in diamond and graphite mixed slurry and disperses, and realizes classification.
According to an embodiment of the invention, the open top of upper cylinder 11, formed on the apical lateral wall of upper cylinder 11
There is the flange 41 upwardly extended outward, the side wall formation overflow launder 40 of flange 41 and upper cylinder 11, the bottom of overflow launder 40 is set
There is upper outflux 50.Thus bottom continuously pumps water by being rotated into water pipe 30, and water flow is constantly vortexed in ontology to be risen, and
It is constantly overflowed by the top of upper cylinder 11.And specific gravity is smaller or the lesser particle of partial size is then as water flow moves upwards simultaneously
Finally overflow launder 40 is overflowed by top to be collected.
According to a particular embodiment of the invention, the top of flange 41 is higher by the top of upper cylinder 11.It is possible thereby to avoid
Liquid is overflowed by the top of flange 41.
According to an embodiment of the invention, the bottom of overflow launder 40 is arranged in upper outflux 50, upper outflux 50 is suitable for separation
Specific gravity and the lesser graphite particle of partial size out.
According to an embodiment of the invention, the middle and upper part of upper cylinder 11 is arranged in middle section outlet 60, and it is located at upper outflux
50 lower section.60 are exported by setting middle section, specific gravity can effectively be discharged and partial size is in medium graphite particle.
According to an embodiment of the invention, underflow outlet 70 is located at the top of underflow cylinder 13, underflow outlet 70 is communicated with bottom
Flow tube road (attached to be not shown in the figure), underflow pipeline extend along the tangential direction of underflow cylinder 13.It can from there through underflow outlet 70
The specific gravity for constantly depositing to get off in mixed slurry and the biggish diamond particles of partial size is effectively discharged.
According to a particular embodiment of the invention, underflow outlet 70 is arranged in the top for being rotated into water pipe 30, the two it is specific
Setting can be as shown in Fig. 2, it is possible thereby to be effectively discharged out underflow particle.
According to an embodiment of the invention, as shown in Figure 1, the above-mentioned system being classified to graphite and diamond mixed-powder
It can further include: water supply pipe 80.The side wall that water supply pipe 80 passes through upper cylinder 11 protrudes into upper cylinder 11, and extends
To the outlet of mixed slurry inlet pipe 20, and mouth down out.It, can be with when two kinds of particles difference of specific gravity is smaller in mixed slurry
Water supply pipe is opened, makes its rising to offset light particle subsidence velocity, weight particle keeps decline.
According to an embodiment of the invention, as shown in Figure 1, the above-mentioned system being classified to graphite and diamond mixed-powder
It can further include: support frame 90.Support frame 90 is arranged on the outer wall of ontology 10, is suitable for rotation multistage separator
200 are supported fixation.
According to a particular embodiment of the invention, the material of above-mentioned ontology can be straight carbon steel, stainless steel or organic glass.
The system according to the above embodiment of the present invention being classified to graphite and diamond mixed-powder specifically can
With by adjusting the charging rate of diamond and graphite mixed slurry inlet pipe 20 and the wash water flow velocity for being rotated into water pipe 30, adjustment by
The graphite particle particle size for the small particle that upper outflux 50 is isolated, the graphite particle that middle partial size is isolated by middle section outlet 60
Particle size and the diamond particles particle size that is discharged by underflow outlet 70.
In another aspect of this invention, the invention proposes a kind of systems using above-described embodiment to graphite and diamond
The method being classified.According to an embodiment of the invention, this method comprises: by being supplied containing the mixed-powder of graphite and diamond
It is ground into grinding device, to obtain mixed slurry；The mixed slurry is supplied by mixed slurry inlet pipe
Into rotation multistage separator, wash water is supplied to the rotation multistage separator using water pipe is rotated into, is washed using described
The upward eddy flow water flow of water carries out classification processing to the mixed slurry, to obtain the graphite and diamond of different-grain diameter respectively
Particle.
The method according to an embodiment of the present invention being classified to graphite and diamond mixed-powder is filled first with grinding
It sets and the mixed-powder containing graphite and diamond is ground, obtain mixed slurry.Mixed slurry to be fractionated passes through
Mixed slurry inlet pipe is supplied into rotation multistage separator, while being pumped into wash water into underflow cylinder by being rotated into water pipe,
Be rotated into water pipe along underflow column side wall tangential direction extend structure design so that wash water water flow along underflow cylinder inner wall
Tangent line enters and is formed the vortex water flow rotated upwards, mixes with the mixed slurry being passed through.In rotation multistage separator, mix
Specific gravity is larger in conjunction slurry or the biggish diamond particles of partial size deposit downwards, is discharged by underflow outlet；Specific gravity it is smaller or
The lesser graphite particle of partial size then follows the vortex water flow rotated upwards to move upwards, and overflows into overflow from upper cylinder top
Slot, and be discharged from upper outflux；And it is medium at the specific gravity and partial size of the part graphite in mixed slurry, it will not both sink down into underflow
Exit, the top that will not float up to upper cylinder are overflowed, this part graphite is then by being located in upper cylinder middle and upper part
Section outlet discharge.As a result, by may be implemented using the system of the invention being classified to graphite and diamond mixed-powder
When mixed slurry continuous feed, graphite in mixed slurry and diamond are separated incessantly, while to the graphite of different-grain diameter
It is classified, the classification of the separation and wherein graphite that make mixed slurry is completed at the same time, to significantly improve classification efficiency, and can
The graphite particle of different-grain diameter is obtained by adjusting technological parameter.
According to an embodiment of the invention, can be rotated into water pipe by adjusting the charging rate of mixed slurry and to described
It is passed through the flow velocity of wash water, adjusts the partial size of isolated graphite and diamond particles.A specific implementation according to the present invention
, the particle size range of graphite particle is 10.0~50.0 μ in the diamond and graphite mixed slurry obtained after milled processed
M, diamond particles partial size are greater than 40.0~300.0 μm.
According to some embodiments of the present invention, the charging rate of diamond and graphite mixed slurry is 350mL/min, Xiang Xuan
Rotating into water pipe and being passed through the flow velocity of wash water is 260mL/min, and the graphite particle for the small particle isolated by upper outflux is averaged grain
Diameter is 22.0 μm；It is 47.0 μm by the average grain diameter that the graphite particle of middle partial size is isolated in middle section outlet；It is separated by underflow outlet
The partial size of large-sized diamond particles is greater than 45.0 μm out.
According to some embodiments of the present invention, the charging rate of diamond and graphite mixed slurry is 450~500mL/
It is 200~220mL/min, the small particle isolated by upper outflux that min, Xiang Suoshu, which are rotated into and are passed through the flow velocity of wash water in water pipe,
Graphite particle partial size be 10.0~15.0 μm；It is 15.0 by the partial size that the graphite particle of middle partial size is isolated in middle section outlet
~30.0 μm；It is greater than 30.0 μm by the partial size that underflow outlet isolates large-sized diamond particles.
According to some embodiments of the present invention, it is preferable that control diamond and the charging rate of graphite mixed slurry are
480mL/min is 210mL/min to the flow velocity for being passed through wash water in water pipe is rotated into, the small particle isolated by upper outflux
The average grain diameter of graphite particle is 11.0 μm.It is 21.0 μm by the partial size that the graphite particle of middle partial size is isolated in middle section outlet；By
The average grain diameter that underflow outlet isolates large-sized diamond particles is greater than 30.0 μm.
In summary, the method being classified to graphite and diamond mixed-powder of the above embodiment of the present invention, passes through
Using rotation multistage separator, and it is excellent by the progress of the flow velocity of charging rate and wash water to diamond and graphite mixed slurry
Change, the graphite particle and diamond particles for obtaining different-grain diameter can be separated simultaneously, realize the separation and multistage of two kinds of substances
Differentiation is completed at the same time, and significantly improves the classification efficiency of diamond and graphite mixed-powder.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not
It must be directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be in office
It can be combined in any suitable manner in one or more embodiment or examples.In addition, without conflicting with each other, the skill of this field
Art personnel can tie the feature of different embodiments or examples described in this specification and different embodiments or examples
It closes and combines.
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is not considered as limiting the invention, those skilled in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, modifies, replacement and variant.
Claims (10)
1. the system that a kind of pair of graphite and diamond mixed-powder are classified characterized by comprising
There is mixed-powder entrance and mixed slurry to export for grinding device, the grinding device；
Rotation multistage separator, the rotation multistage separator include:
Ontology, the ontology from top to bottom successively include upper cylinder, transition cylinder and underflow cylinder, the upstream cylinder it is straight
Diameter is greater than the diameter of the underflow cylinder, and the diameter of the transition cylinder is along the upper cylinder to the direction of the underflow cylinder
It is gradually reduced；Wherein, the open top of the upper cylinder, the apical lateral wall of the upstream cylinder is equipped with to extend outwardly upwards
Flange, the apical lateral wall of the flange and the upper cylinder forms overflow launder；
Mixed slurry inlet pipe, one end of the mixed slurry inlet pipe are connected with mixed slurry outlet, and the other end is by described
The top of fluidization tower body is protruded into the upper cylinder；
It is rotated into water pipe, the water pipe that is rotated into is located on the lower sides of the underflow cylinder, and along underflow cylinder side
The tangential direction of wall extends；
Upper outflux, the upper outflux are located at the bottom of overflow launder；
Middle section outlet, the middle section outlet is located on the middle and upper part side wall of the upper cylinder, and is located at the upper outflux
Lower section；
Underflow outlet, the underflow outlet are located at the top of the underflow cylinder, and the underflow outlet is communicated with underflow pipeline, institute
The tangential direction that underflow pipeline is stated along the underflow cylinder extends.
2. system according to claim 1, which is characterized in that including multiple, multiple middle sections go out for the middle section outlet
Mouth is distributed along longitudinal direction on the side wall of the upper cylinder.
3. system according to claim 1, which is characterized in that it is described upstream cylinder and the underflow cylinder diameter ratio be
(1.2~2): 1.
4. system according to claim 1, which is characterized in that the side wall of the transition cylinder and the angle of vertical direction are
25~35 °.
5. system according to claim 1, which is characterized in that the mixed slurry inlet pipe protrudes into 4/ in the upper cylinder
At 5~3/4 length.
6. system according to claim 1, which is characterized in that further comprise: water supply pipe；The water supply pipe passes through described
The side wall of upper cylinder protrudes into the upper cylinder, and extends to below the outlet of the mixed slurry inlet pipe.
7. a kind of method being classified using the described in any item systems of claim 1~6 to graphite and diamond, feature
It is, comprising:
Mixed-powder containing graphite and diamond is supplied and is ground into grinding device, to obtain mixing slurry
Material；
The mixed slurry is supplied by mixed slurry inlet pipe into rotation multistage separator, using being rotated into water pipe to institute
Rotation multistage separator supply wash water is stated, the mixed slurry is carried out at classification using the wash water upward eddy flow water flow
Reason, to obtain the graphite and diamond particles of different-grain diameter respectively.
8. the method according to the description of claim 7 is characterized in that by adjusting the charging rate of the mixed slurry and to institute
The flow velocity for being rotated into and being passed through wash water in water pipe is stated, the partial size of the isolated graphite and diamond particles is adjusted.
9. according to the method described in claim 8, it is characterized in that, the charging rate of the mixed slurry is 300~500mL/
It is 220~280mL/min, the small particle isolated by upper outflux that min, Xiang Suoshu, which are rotated into and are passed through the flow velocity of wash water in water pipe,
Graphite particle partial size be 10.0~25.0 μm；By middle section outlet isolate middle partial size graphite particle partial size be 25.0~
50.0μm；It is greater than 45.0 μm by the partial size that underflow outlet isolates diamond particles.
10. according to the method described in claim 8, it is characterized in that, the charging rate of the mixed slurry is 450~500mL/
It is 200~220mL/min, the small particle isolated by upper outflux that min, Xiang Suoshu, which are rotated into and are passed through the flow velocity of wash water in water pipe,
Graphite particle partial size be 10.0~15.0 μm；By middle section outlet isolate middle partial size graphite particle partial size be 15.0~
40.0μm；It is greater than 30.0 μm by the partial size that underflow outlet isolates diamond particles.
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| CN110420748A (en) * | 2019-07-11 | 2019-11-08 | 中国恩菲工程技术有限公司 | For being classified the device of ternary precursor |
| CN110420752A (en) * | 2019-07-24 | 2019-11-08 | 中国恩菲工程技术有限公司 | Rotation multistage separator |
| CN110420749A (en) * | 2019-07-11 | 2019-11-08 | 中国恩菲工程技术有限公司 | For being classified the device of silicon and silicon carbide |
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