CN108855525A - A kind of pulverized coal preparation system of high temperature gas cooled reactor nuclear fuel element graphous graphite powder - Google Patents
A kind of pulverized coal preparation system of high temperature gas cooled reactor nuclear fuel element graphous graphite powder Download PDFInfo
- Publication number
- CN108855525A CN108855525A CN201810555497.1A CN201810555497A CN108855525A CN 108855525 A CN108855525 A CN 108855525A CN 201810555497 A CN201810555497 A CN 201810555497A CN 108855525 A CN108855525 A CN 108855525A
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- CN
- China
- Prior art keywords
- powder
- fine grinding
- moving plate
- tup
- nuclear fuel
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- 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.)
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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
- B02C21/00—Disintegrating plant with or without drying of the material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C13/00—Disintegrating by mills having rotary beater elements ; Hammer mills
- B02C13/14—Disintegrating by mills having rotary beater elements ; Hammer mills with vertical rotor shaft, e.g. combined with sifting devices
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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
- B02C13/00—Disintegrating by mills having rotary beater elements ; Hammer mills
- B02C13/26—Details
- B02C13/28—Shape or construction of beater elements
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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
Abstract
The present invention relates to artificial graphite production technical fields, more particularly to a kind of pulverized coal preparation system of high temperature gas cooled reactor nuclear fuel element graphous graphite powder, including jaw crusher, 3R raymond mill and mechanical flour mill, the machinery flour mill includes blower, grader and host, the host includes fine grinding storehouse, the Moving plate being rotatably dispose in the fine grinding storehouse, the tup being fixedly installed on the Moving plate, it is installed in fine grinding storehouse and is located at the gear ring of Moving plate outer ring and the driving motor of driving Moving plate rotation, milling area is formed between Moving plate and gear ring, the pivot region of tup forms spheroidized area；By by the integration of powder fine grinding and shaping, the frequency of its host, blower and grader is controlled respectively in conjunction in raw material corase grinding and fine grinding reforming process, realize accurately controlling for powder index, solution is existing in the prior art to cause high standard nuclear fuel element to be difficult to realize the technical issues of producing in batches because the powder index of graphous graphite powder can not accurately control.
Description
Technical field
The present invention relates to artificial graphite production technical field more particularly to a kind of high temperature gas cooled reactor nuclear fuel elements with artificial
The pulverized coal preparation system of graphite powder.
Background technique
High temperature gas cooled reactor nuclear fuel element production method is：Fuel uranium after silicon carbide coats (1mm or so), it is evenly dispersed
In graphite matrix, " graphite nodule " of diameter 60mm, referred to as nuclear fuel element is made；Graphite substrate material, mainly by artificial stone
Ink powder and natural graphite powder are bonded by phenolic aldehyde data, and in nuclear fuel element, weight accounting is core up to 90% or more
One of core material during the fuel element manufacturing；It is very harsh due to having into any material in nuclear reactor
Condition requirement, the intensity of nuclear fuel element, wearability are required by it stringent.
Chinese Patent Application No. is：High temperature gas cooled reactor nuclear fuel element artificial graphite disclosed in 2016104144468
The preparation method and graphite powder of powder, disclosing preparation method is specially mixing, isostatic pressing, densification, milling, shaping
And classification is handled and is graphitized and high temperature purification step, carries out nuclear fuel element by the graphite powder that this method is prepared
When engineer testing, since graphite powder is all the shape of round or ellipse, and granule size is reasonably distributed, the combustion of core made of compacting
Expect element, inside will not form hole because of bridging phenomenon, and the density of fuel particle is big, and intensity is high, and stability is good, in reactor
In long service life.
In the above-mentioned technical solutions, it by after material coarse cutting, is milled through airflow milling, then reshaping is handled；Its gained
Powder particle size it is uncontrollable simultaneously, shaped machine carries out shaping again after being milled by airflow milling, it is well known that in reforming process
The friction between powder and setting is equally existed, and wearing is uncontrollable, therefore the powder after airflow milling and the powder after shaping
Expect while index difference and be difficult to control, leads to that the nuclear fuel element production of high standard is difficult to meet.
Summary of the invention
The purpose of the present invention is in view of the deficiencies of the prior art, provide a kind of high temperature gas cooled reactor nuclear fuel element employment
The pulverized coal preparation system for making graphite powder, by by the integration of powder fine grinding and shaping, in conjunction in raw material corase grinding and fine grinding reforming process
The frequency of its host, blower and grader is controlled respectively, accurately controlling for powder index is realized, solves to exist in the prior art
Because the powder index of graphous graphite powder can not accurately control cause high standard nuclear fuel element be difficult to realize batch production
Technical problem.
In order to solve the above technical problems, the present invention provides a kind of high temperature gas cooled reactor nuclear fuel element graphous graphite powders
Pulverized coal preparation system, including jaw crusher, 3R raymond mill and mechanical flour mill, which includes blower and classification
Machine, which is characterized in that further include host, which includes：Fine grinding storehouse, the Moving plate being rotatably dispose in the fine grinding storehouse, fixation are set
The tup being placed on the Moving plate, the gear ring and the driving Moving plate that are installed in the fine grinding storehouse and are located at the Moving plate outer ring
The driving motor of rotation, forms milling area between the Moving plate and the gear ring, the pivot region of the tup forms spheroidized area；
Graphous graphite powder raw material are successively formed by powder through being opened in after the jaw crusher and 3R raymond grinding powder crusher machine
Feed inlet on the side wall of the fine grinding storehouse is fallen on Moving plate, is rotated through the Moving plate and is got rid of powder to the milling area with centrifugation
In interior process, the corner angle on powder are removed in a manner of collision impact through the tup while across the spheroidized area, it is real
The primary nodularization of existing powder；After powder enters in milling area outer circumference surface through Moving plate and gear ring to frictionally to powder into
Row fine grinding processing is formed by powder through tup operating and its top and is formed by vortical flow with adsorption capacity pair after fine grinding
Powder is concentrated, and in powder centralized procedure, powder is through carrying out second level ball to powder in a manner of collision impact through the tup
Change processing, the powder after second level nodularization operate the powder in generated negative pressure gas flow drive vortical flow through the blower again
Material exports after grader screening filtering, forms the powder of standard index.
As an improvement, the fine grinding storehouse is tubular construction setting, the grader is located at the top in the fine grinding storehouse, the wind
Setting is sequentially communicated in machine, grader and fine grinding storehouse.
As improvement, the grader includes the housing being fixedly installed on the fine grinding storehouse and is rotatably dispose in the housing
Interior filter core, the filter core are arranged along its axis horizontal.
As an improvement, the tup quantity is 18-30, which is uniformly arranged table thereon around the axis of the Moving plate
Face.
As an improvement, the gear ring is annular gear structure setting, and the height H of the height h of the tup and the gear ring
Between, H>h.
Beneficial effects of the present invention：
(1) it is produced, is realized to standard index by the cooperation of 3R raymond mill and mechanical flour mill in the present invention
Graphous graphite powder powder accurately controls, and is powder in conjunction with the control of blower a in 3R raymond mill and grader a frequency
Grain standard uniformly produces, and the frequency control of host, blower and grader, makes it possible to produce standard and refer in cooperative mechanical flour mill
While marking graphous graphite powder powder, production efficiency and controlling are greatly improved, and are solved existing in the prior art because of artificial stone
The technical issues of powder index of ink powder can not accurately control and high standard nuclear fuel element is caused to be difficult to realize batch production.
(2) special entity of continuous grinding disk and tup and gear ring setting in the present invention and motion mode, are realized thin to powder
To the synchronization shaping of powder particles during mill, to make the synchronous operation of fine grinding process and trimming, in conjunction with being hammered into shape on turntable
The powder after fine grinding is formed by after vortical flow is collected to shift through blower through its rotation in head operation process and is exported, then
Powder is collected through blower, while being automatically separated qualified powder and powder, realization accurately controls powder index.
(3) keep powder fine grinding multiple with tup in the process by the setting of the special construction of tup and turntable in the present invention
Contact -impact carries out corner angle removal while making powder fine grinding, make powder granule in spherical, to reduce graphous graphite powder
The bridge formation of grain part is linear, improves apparent density, the density and intensity of nuclear fuel element is improved, in conjunction with tup to rotate drive manner
Generated vortical flow realizes the control of powder index by the operating frequency control to host to the absorptive collection of tiny powder
System.
In conclusion the present invention has many advantages, such as that mechanism is reasonable, production is stable and powder norm controlling is accurate；More particularly to
A kind of pulverized coal preparation system of high temperature gas cooled reactor nuclear fuel element graphous graphite powder.
Detailed description of the invention
It, below will be to required use in embodiment description for the clearer technical solution for illustrating the embodiment of the present invention
Attached drawing be briefly described, it should be apparent that, drawings discussed below is only some embodiments of the present invention, for ability
For the those of ordinary skill in domain, without creative efforts, it is attached to can also be obtained according to these attached drawings other
Figure.
Fig. 1 is overall structure of the present invention；
Fig. 2 is the mechanical flour mill partial sectional view in the present invention；
Fig. 3 is that A-A trusts cross-sectional view in Fig. 2；
Fig. 4 is one of state diagram of the present invention；
Fig. 5 is the two of state diagram of the present invention；
Fig. 6 is grader schematic cross-sectional view；
Fig. 7 is enlarged diagram at B in Fig. 2.
Specific embodiment
Technical solution in the embodiment of the present invention is clearly and completely illustrated with reference to the accompanying drawing.
Embodiment one
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.
As shown in Fig. 1,2,3,4 and 5, a kind of pulverized coal preparation system of high temperature gas cooled reactor nuclear fuel element graphous graphite powder, packet
It includes jaw crusher 10,3R raymond mill 20 and mechanical flour mill 30, the machinery flour mill 30 and includes blower 1 and grader 2,
It is characterized in that, further including host 3, which includes：Fine grinding storehouse 31, is consolidated the Moving plate 32 being rotatably dispose in the fine grinding storehouse 31
Surely the tup 33 that is set on the Moving plate 32, be installed in the fine grinding storehouse 31 and be located at the gear ring 34 of 32 outer ring of Moving plate with
And the driving motor 35 that the driving Moving plate 32 rotates, milling area 36 is formed between the Moving plate 32 and the gear ring 34, it is described
The pivot region of tup 33 forms spheroidized area 37；Graphous graphite powder raw material are successively through the jaw crusher 10 and 3R Raymond mill
Feed inlet 311 of the powder through being opened on 31 side wall of fine grinding storehouse is formed by after powder machine 20 is broken to fall on Moving plate 32, is passed through
During the Moving plate 32 rotation is got rid of powder to the milling area 36 with centrifugation, while passing through spheroidized area 37
The corner angle on powder are removed in a manner of collision impact through the tup 33, realize the primary nodularization of powder；Powder enters milling
Outer circumference surface after in area 36 through Moving plate 32, to frictionally to powder progress fine grinding processing, is formed with gear ring 34 after fine grinding
Powder through being formed by vortical flow above the tup 33 operating and its and being concentrated with adsorption capacity to powder, in powder collection
During, powder through through the tup 33 in a manner of collision impact to powder carry out second level spheroidising, after second level nodularization
Powder again through the blower 1 operate caused by negative pressure gas flow drive vortical flow in powder, through the grader 2 sieve
It is exported after filtering, forms the powder of standard index.
Embodiment two
As shown in Fig. 2,3 and 5, wherein with component identical or corresponding in embodiment one using corresponding with embodiment one attached
Icon note hereafter only describes the distinctive points with embodiment one for simplicity；The difference of the embodiment two and embodiment one
It is：The fine grinding storehouse 31 is tubular construction setting, and the grader 2 is located at the top in the fine grinding storehouse 31, and the blower 1 divides
Setting is sequentially communicated in grade machine 2 and fine grinding storehouse 31；After Moving plate 31 and gear ring 34 carry out fine grinding processing to powder, transported through blower 1
Moving plate 32 is rotated the vortical flow absorption output being formed by containing powder by adsorption gas flow caused by turning, and realizes powder after fine grinding
The continuous output of material.
Further, as shown in Fig. 2,4 and 6, the grader 2 includes the housing being fixedly installed on the fine grinding storehouse 31
21 and the filter core 22 that is rotatably dispose in the housing 21, the filter core 22 be arranged along its axis horizontal；In the present embodiment, by dividing
Grade machine 2 carries out in screening process powder, will rotate after the isolation of unqualified powder, bulky grain powder is driven to fall in side, real
Existing grader 2 while screening out and shift, carries out powder screening by the different location on grader 2 to bulky grain powder,
While preventing bulky grain powder from stopping to strainer, production efficiency is improved；In the present embodiment, grader 2 passes through rotation centrifugation
Mode will adsorb thereon and intransitable bulky grain powder is thrown away, and pass through the shell structure being equipped on the outside of filter core with it
Realize that the unilateral side of bulky grain powder is fallen.
Further, as it can be seen in figures 5 and 6, the tup 33 is 18-30 a and uniformly distributed and convex around the axis of the Moving plate 32
It rises and is mounted thereon surface；It is tested by many experiments, when the quantity of tup 33 is in 18-30, powder particles shape result
In uniform spherical, when the quantity of tup 33 is very few, it is unfavorable for the spherical processing of powder particles, when excessive, tup 33
The distance between it is smaller, be unfavorable for the operating of powder particles, to reduce the number of shocks of tup 33 Yu powder particles；In this reality
It applies in example, the spherical processing of powder particles, the main tup 33 driven by powder particles through air-flow in motion process with rotation
The round and smooth processing of powder particles shape corner angle is realized in collision.
In addition, as shown in Figures 4 and 5, the powder formed after 3R raymond grinding powder crusher machine is fallen within after entering in fine grinding storehouse 31
On turntable 32, during being thrown away with centrifugation to milling area 36 in 32 rotation process of turntable, hits, realize through tup 33
Preliminary shaping to powder；Powder is after turntable 32 and 34 fine grinding of gear ring processing, produced by driving tup 33 to rotate through turntable 32
Vortical flow will in the powder in milling area 36 it is poly- in absorption, then through blower 1 operate caused by adsorption gas flow carry powder
Material exports after the filtering screening of grader 2, realizes the output of standard index powder.
Further, as it can be seen in figures 5 and 6, the gear ring 34 is annular gear structure setting, and the height h of the tup 33
Between the height H of the gear ring 34, H>h；At work, powder granule is gathered in milling area 36 after the centrifugation of turntable 32 is thrown away
It is interior, it is arranged by the height that the height of gear ring 34 is greater than tup 33, during assembling powder in the area 36 that is milled, there is rotation
In tup 33 along turntable 32 radially outward pushing, realize milling area 36 in automated packing.
In the present invention, it is to be understood that：Term " center ", " longitudinal direction ", " transverse direction ", " length ", " width ", " thickness
Degree ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside", " clockwise ",
The orientation or positional relationship of instructions such as " counterclockwise " are to be based on the orientation or positional relationship shown in the drawings, and are merely for convenience of retouching
State the present invention and simplify description, rather than the equipment of indication or suggestion meaning or element must have specific orientation, Yi Te
Fixed orientation construction and operation, therefore be not considered as limiting the invention.
In addition, term " first ", " second " are used for description purposes only, it is not understood to indicate or imply opposite important
Property or implicitly indicate the quantity of indicated technical characteristic.Therefore, define " first ", the feature of " second " can be expressed or
Person implicitly includes one or more of the features.In description of the invention, the meaning of " plurality " is two or two with
On, unless otherwise specifically defined.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Any changes or substitutions that can be easily thought of under technical clarification of the invention by anyone skilled in the art, such as passes through
By the integration of powder fine grinding and shaping, in conjunction in raw material corase grinding and fine grinding reforming process respectively to its host, blower and classification
The frequency of machine controls, and realizes accurately controlling for powder index, design concept, should all cover protection scope of the present invention it
It is interior.Therefore, the scope of protection of the invention shall be subject to the scope of protection specified in the patent claim.
Claims (5)
1. a kind of pulverized coal preparation system of high temperature gas cooled reactor nuclear fuel element graphous graphite powder, including jaw crusher (10), 3R thunder
Flour mill (20) and mechanical flour mill (30) are covered, which includes blower (1) and grader (2), and feature exists
In further including host (3), which includes：Fine grinding storehouse (31), the Moving plate (32) being rotatably dispose in the fine grinding storehouse (31),
The tup (33) that is fixedly installed on the Moving plate (32) is installed in the fine grinding storehouse (31) and is located at the Moving plate (32) outer ring
Gear ring (34) and the driving Moving plate (32) rotation driving motor (35), the Moving plate (32) and the gear ring (34) it
Between form milling area (36), the pivot region of the tup (33) forms spheroidized area (37)；Graphous graphite powder raw material successively pass through
Powder, which is formed by, after the jaw crusher (10) and 3R raymond mill (20) are broken is opened in the fine grinding storehouse (31)
Feed inlet (311) on side wall is fallen on Moving plate (32), is rotated through the Moving plate (32) and is got rid of powder to the mill with centrifugation
During in powder area (36), while passing through the spheroidized area (37) through the tup (33) in a manner of collision impact to powder
On corner angle removal, realize the primary nodularization of powder；After powder enters in milling area (36) outer circumference surface through Moving plate (32) with
Gear ring (34) to frictionally to powder carry out fine grinding processing, be formed by after fine grinding powder through the tup (33) operating with
Its top is formed by vortical flow and is concentrated with adsorption capacity to powder, and in powder centralized procedure, powder is through the tup
(33) second level spheroidising is carried out to powder in a manner of collision impact, the powder after second level nodularization is transported through the blower (1) again
Negative pressure gas flow caused by turning drives the powder in vortical flow, exports after the grader (2) screening filtering, forms standard
The powder of index.
2. a kind of pulverized coal preparation system of high temperature gas cooled reactor nuclear fuel element graphous graphite powder according to claim 1, special
Sign is that the fine grinding storehouse (31) is tubular construction setting, and the grader (2) is located at the top in the fine grinding storehouse (31), described
Setting is sequentially communicated in blower (1), grader (2) and fine grinding storehouse (31).
3. a kind of pulverized coal preparation system of high temperature gas cooled reactor nuclear fuel element graphous graphite powder according to claim 1, special
Sign is that the grader (2) includes the housing (21) being fixedly installed on the fine grinding storehouse (31) and is rotatably dispose in the cover
Filter core (22) in shell (21), the filter core (22) are arranged along its axis horizontal.
4. a kind of pulverized coal preparation system of high temperature gas cooled reactor nuclear fuel element graphous graphite powder according to claim 1, special
Sign is that tup (33) quantity is 18-30, which is uniformly arranged thereon around the axis of the Moving plate (32)
Surface.
5. a kind of pulverized coal preparation system of high temperature gas cooled reactor nuclear fuel element graphous graphite powder according to claim 1, special
Sign is, the gear ring (34) is annular gear structure setting, and the height of the height h of the tup (33) and the gear ring (34)
Between H, H>h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810555497.1A CN108855525A (en) | 2018-06-01 | 2018-06-01 | A kind of pulverized coal preparation system of high temperature gas cooled reactor nuclear fuel element graphous graphite powder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810555497.1A CN108855525A (en) | 2018-06-01 | 2018-06-01 | A kind of pulverized coal preparation system of high temperature gas cooled reactor nuclear fuel element graphous graphite powder |
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| CN108855525A true CN108855525A (en) | 2018-11-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810555497.1A Pending CN108855525A (en) | 2018-06-01 | 2018-06-01 | A kind of pulverized coal preparation system of high temperature gas cooled reactor nuclear fuel element graphous graphite powder |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115025855A (en) * | 2022-06-23 | 2022-09-09 | 广东众大智能科技有限公司 | Graphite grinder |
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| CN201553612U (en) * | 2009-11-27 | 2010-08-18 | 洛阳市冠奇工贸有限责任公司 | Gas flow vortex powder refining machine for producing spherical graphite |
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| CN115025855A (en) * | 2022-06-23 | 2022-09-09 | 广东众大智能科技有限公司 | Graphite grinder |
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