CN109590073A - A kind of fine grinding system of slag - Google Patents
A kind of fine grinding system of slag Download PDFInfo
- Publication number
- CN109590073A CN109590073A CN201811575974.7A CN201811575974A CN109590073A CN 109590073 A CN109590073 A CN 109590073A CN 201811575974 A CN201811575974 A CN 201811575974A CN 109590073 A CN109590073 A CN 109590073A
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- Prior art keywords
- clinker
- mill
- slag
- grinding
- fixed
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C15/00—Disintegrating by milling members in the form of rollers or balls co-operating with rings or discs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
- B01F27/90—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with paddles or arms
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C15/00—Disintegrating by milling members in the form of rollers or balls co-operating with rings or discs
- B02C15/003—Shape or construction of discs or rings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C15/00—Disintegrating by milling members in the form of rollers or balls co-operating with rings or discs
- B02C15/004—Shape or construction of rollers or balls
-
- 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
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- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Crushing And Grinding (AREA)
Abstract
The invention discloses a kind of fine grinding systems of slag, including grinding case, the bottom of the grinding case is supported on the ground by more support columns, clinker mill and slag mill are from top to bottom successively arranged in the grinding case, the inside of grinding case is from top to bottom successively divided into clinker and rolls room by clinker mill and slag mill, slag rolls room and teeter chamber, the clinker mill passes through clinker driving equipment suspension in the inner top of grinding case, the slag mill is supported on the inside of grinding case by linkage driving device, it is transversely provided on the top surface of the slag mill and clinker mill and multiple rolls roller, the rabbling mechanism for mix cement clinker and slag is equipped in the teeter chamber；The present invention by locellus be individually rolled into powder after be stirred for solving the problems, such as that both previous slag and clinker grindability difference are larger in a manner of mixed grinding, the Gao Bibiao after substantially increasing slag and clinker grinding is long-pending and fineness.
Description
Technical field
The present invention relates to a kind of grinding agitating device system, specifically a kind of fine grinding system of slag.
Background technique
Slag is the byproduct of steel plant's blast furnace ironmaking, is in light grey glass crystal graininess after water quenching quenching,
Belong to industrial residue material.Slag has more than 40 years history in China as cement mixture, but most of is by slag
With clinker together grinding, belong to extensive application, the slag with " latent hydraulicity " is to produce the best mixing material of cement
Material, slag can produce ordinary portland cement (P O) and portland slag cement (P S), common Portland water as mixing material
Mud national Specification: fine slag contents are no more than 15% in P O, and fine slag contents can be 20% ~ 70% in P S.Cause
This, P S to maximally utilise slag and reduce manufacture of cement cost it is more meaningful.
But the production method of traditional P S is that clinker and slag is interior in milling equipment (predominantly ball mill)
Combined grinding forms, and because both clinker and slag grindability difference are larger, slag average particle size is bigger than normal in gained cement, and fine powder contains
Measure low, potential activity cannot be played effectively, affect the performances such as the early strength of cement, also restrict mentioning for fine slag contents
It is high.Thicker with the miberal powder after clinker mix grinding since the grindability of slag and clinker differs greatly, specific surface area is
300m2/kg or so, in hydrated cementitious, the activity of slag cannot be given full play to, and the slag of coarseness is in cement hydration process
Only play the filling effect of micro-aggregate.
Therefore, in view of the above-mentioned problems, we need a kind of grinding that can be sufficiently milled to slag and clinker
Device.
Summary of the invention
The purpose of the present invention is to provide a kind of fine grinding systems of slag, to solve mentioned above in the background art ask
Topic.
To achieve the above object, the invention provides the following technical scheme:
The bottom of a kind of fine grinding system of slag, including grinding case, the grinding case is supported on the ground by more support columns,
Clinker mill and slag mill are from top to bottom successively arranged in the support column, clinker mill and slag mill will be in grinding casees
Portion is from top to bottom successively divided into that clinker rolls room, slag rolls room and teeter chamber, and the slag rolls room and cement is ripe
Material rolls and offers slag feed inlet and clinker feed inlet on the rear panel of room respectively, and the interior bottom of the teeter chamber is equipped with multiple
It for the stirring discharge port of discharging, stirs and material valve deck is installed in discharge port outer openings, the clinker mill is driven by clinker
Dynamic device is suspended on the inner top of grinding case, and the slag mill is supported on the inside of grinding case, institute by linkage driving device
It states and closed entirety is formed by striker plate between slag mill and clinker mill side wall and the inner wall of support column, on the striker plate
Equipped with multiple drain spouts for blanking, electromagnetism open-and-close mechanism, the slag mill and clinker mill are equipped in the drain spout
Top surface on be transversely provided with it is multiple roll roller, the roller that rolls is driven by the motor that rolls being mounted on grinding case lateral wall
It is dynamic, the rabbling mechanism for mix cement clinker and slag is equipped in the teeter chamber.
Further scheme: the clinker driving device includes clinker mill bull stick and clinker grinding mill disk-drive motor, institute
The end face center that clinker mill bull stick is vertically fixed on clinker mill is stated, the clinker mill bar rotation is fixed on grinding case
In end face center, the top of the clinker mill bull stick and the electricity in the clinker grinding mill disk-drive motor of grinding case top surface is inversely installed
Arbor is fixedly linked.
Further scheme: the linkage driving device includes linkage shaft and linkage motor, and the linkage shaft is perpendicular
It is directly fixed on teeter chamber center, the top of the linkage shaft is fixed on the bottom center position of slag mill, described
The bottom end rotation of turn axis is fixed on the bottom center position of grinding case and the electricity with the linkage motor for being mounted on grinding bottom face
Arbor is fixedly linked.
Further scheme: the rabbling mechanism includes stirring mobile jib, stirring strut and stirring cross bar, the stirring master
Bar is horizontally fixed on two sides on the bar wall of linkage shaft, vertical fixed more stirrings branch on the bottom bar wall of the stirring mobile jib
Bar, the stirring strut rotation are fixed on the bar wall of stirring mobile jib, laterally staggered fixed on the bar wall of the stirring mobile jib
More stirring cross bars.
Further scheme: the bottom bar wall surrounding of the linkage shaft rotates the shaft coupling rotation bottom of fixed truncated cone-shaped
Seat, the fixed guide slope tilted down of the bottom surface surrounding of the teeter chamber, guide slope and shaft coupling rotating base enclose
One annular funnel trough.
Further scheme: the electromagnetism open-and-close mechanism include putty plate, telescopic block, telescopic chute, adjustable spring and
Cross bar is stirred, the putty plate is arranged in drain spout and is mutually clamped with the side wall of slag mill and clinker mill sealing,
The outboard end of the putty plate is fixed in telescopic block, and the telescopic block sliding is stuck in telescopic chute, and the telescopic chute opens up
In the inside of the left and right sidewall of grinding case, the inner wall of the telescopic block and telescopic chute laterally fixed more elastic force into teeter chamber
The adjustable spring in portion, offers the magnet installing port communicated with outside grinding case on the telescopic chute, in the magnet installing port
Electromagnet is installed.
Further scheme: the slag mill and clinker mill are the disc gold that center is equipped with cylindrical protrusions
Belong to mill, the roller that rolls is metal cylinder.
Compared with prior art, the beneficial effects of the present invention are: the present invention completes the disposable powder of clinker and slag
Last hybrid manipulation, being individually rolled into after powder in the grinding mode being stirred for this locellus, solves previous slag and cement
Both clinkers grindability difference is larger, and slag average particle size is bigger than normal in gained cement, and fine powder content is low, and potential activity cannot get
The problem of effectively playing, affecting the performances such as the early strength of cement, by individually milling so that substantially increasing slag
Gao Bibiao product, fineness are modified it as having potential gelling material, and activity can sufficiently be sent out under alkaline condition
It waves, the multinomial performance of concrete and cement is made to be greatly improved and improve.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the fine grinding system of slag.
Fig. 2 be the fine grinding system of slag in along the sectional view of A-A.
Fig. 3 is the structural schematic diagram of putty plate in the fine grinding system of slag.
Fig. 4 is the structural schematic diagram of teeter chamber in the fine grinding system of slag.
Fig. 5 is the structural schematic diagram of the fine grinding system left view of slag.
In figure: grinding case 1, support column 10, teeter chamber 11, stirring discharge port 12, material valve deck 13, slag roll room 14, mine
Slag feed inlet 15, clinker roll room 16, clinker feed inlet 17, slag mill 2, linkage shaft 20, linkage motor 21, shaft coupling
Rotating base 22, stirring mobile jib 23, stirring strut 24, stirring cross bar 25, guide slope 26, striker plate 3, drain spout 30, putty
Plate 31, telescopic block 32, telescopic chute 33, adjustable spring 34, electromagnet 35, magnet installing port 36, clinker mill 4, clinker mill
Bull stick 40, clinker grinding mill disk-drive motor 41 roll roller 5, roll motor 50.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Embodiment 1
Please refer to Fig. 1~5, in the embodiment of the present invention, a kind of fine grinding system of slag, including grinding case 1, the grinding case 1
Bottom by the support of more support columns 10 on the ground, be from top to bottom successively arranged clinker mill 4 and mine in the support column 10
The inside of grinding case 1 is from top to bottom successively divided into clinker and rolls room by sizing disk 2, clinker mill 4 and slag mill 2
16, slag rolls room 14 and teeter chamber 11, and the slag rolls room 14 and clinker is rolled and opened respectively on the rear panel of room 16
Equipped with slag feed inlet 15 and clinker feed inlet 17, the interior bottom of the teeter chamber 11 is equipped with multiple stirring dischargings for discharging
Mouth 12, stirs and is equipped with material valve deck 13 in 12 outer openings of discharge port, and the clinker mill 4 is existed by clinker driving equipment suspension
The inner top of grinding case 1, the slag mill 2 are supported on the inside of grinding case 1, the slag mill by linkage driving device
Closed entirety is formed by striker plate 3 between 2 and 4 side wall of clinker mill and the inner wall of support column 10, the striker plate 3 is equipped with
Multiple drain spouts 30 for blanking, the drain spout 30 is interior to be equipped with electromagnetism open-and-close mechanism, the slag mill 2 and clinker mill
Be transversely provided on 4 top surface it is multiple roll roller 5, it is described to roll roller 5 and roll electricity by being mounted on 1 lateral wall of grinding case
Machine 50 drives, and the rabbling mechanism for mix cement clinker and slag is equipped in the teeter chamber 11.
The clinker driving device includes clinker mill bull stick 40 and clinker grinding mill disk-drive motor 41, and the clinker mill turns
Bar 40 is vertically fixed on the end face center of clinker mill 4, and the rotation of clinker mill bull stick 40 is fixed in the top surface of grinding case 1
In the heart, the top of the clinker mill bull stick 40 and the electricity in the clinker grinding mill disk-drive motor 41 of 1 top surface of grinding case is inversely installed
Arbor is fixedly linked, and the clinker mill bull stick 40 of setting in the inner top of grinding case 1, and passes through 4 integral hanging of clinker mill
The drive of clinker grinding mill disk-drive motor 41, clinker mill 4 is whole to be rotated in the horizontal plane.
The linkage driving device includes linkage shaft 20 and linkage motor 21, and the linkage shaft 20 is fixed on vertically to be stirred
11 center of room is mixed, the top of the linkage shaft 20 is fixed on the bottom center position of slag mill 2, the linkage shaft
20 bottom end rotation is fixed on the bottom center position of grinding case 1 and the electricity with the linkage motor 21 for being mounted on 1 bottom surface of grinding case
Arbor is fixedly linked, and the linkage shaft 20 of setting plays the role of support to slag mill 2 and rotation drives.
The rabbling mechanism includes stirring mobile jib 23, stirring strut 24 and stirring cross bar 25, and the stirring mobile jib 23 is horizontal
It is fixed on two sides on the bar wall of linkage shaft 20, vertical fixed more stirrings strut on the bottom bar wall of the stirring mobile jib 23
24, the stirring strut 24, which rotates, to be fixed on the bar wall of stirring mobile jib 23, laterally staggered on the bar wall of the stirring mobile jib 23
Fixed more stirring cross bars 25, the stirring mobile jib 23 of setting can follow the linkage shaft 20 of driving slag mill 2 to turn together
It is dynamic, reduce the setting of motor, when stirring the rotation of mobile jib 23, more stirring struts 24 of stirring 23 bottom of mobile jib can stirred
The clinker and slag after agitation rolls in room 11 are mixed, strut 24 is stirred and stirring mobile jib 23 is being followed to surround linkage shaft 20
While revolution, rotation can also be carried out under the drive of frictional resistance, to stir on strut 24 when stirring 24 rotation of strut
The stirring cross bar 25 of setting laterally staggered can be stirred, and further increase the uniform of the mixing of clinker and slag stirring
Degree.
The working principle of the invention is: in use, clinker, which is imported clinker from clinker feed inlet 17, rolls room
In 16, slag is imported into slag by slag feed inlet 15 and is rolled in room 14, slag and clinker roll room 14 in slag respectively
Rolled with clinker and individually carry out preparatory grinding in room 16, slag mill 2 and roll that the mutual abrasive disk type of roller 5 rolls can be with
Slag is rolled uniformly, clinker mill 4 and roll the mutual abrasive disk type of roller 5 roll clinker can be rolled uniformly, when
When clinker and slag roll completion, electromagnet 35 is powered, the drain spout 30 on striker plate 3 is opened, keeps mine around here
Sizing disk 2 and clinker mill 4 continue to rotate, and accelerate slag by the centrifugal force of slag mill 2 and clinker mill 4 and roll room 14
It rolls the powder in room 16 with clinker to be discharged out of drain spout 30, final slag rolls room 14 and clinker rolls room 16
The interior slag powder for rolling completion and clinker powder all enter in teeter chamber 11, and the shaft 20 that links at this time drives stirring master
Two kinds of raw materials be sufficiently mixed uniformly by bar 23, stirring strut 24 and stirring cross bar 25 in teeter chamber 11, complete
The disposable powder hybrid manipulation of clinker and slag, this locellus are individually rolled into after powder in the grinding side being stirred
Formula, solves that both previous slag and clinker grindability difference are larger, and slag average particle size is bigger than normal in gained cement, fine powder
The problem of content is low, and potential activity cannot be played effectively, affects the performances such as the early strength of cement, by individually grinding
Mill is so that substantially increasing the Gao Bibiao product of slag, fineness, being modified it as having potential gelling material, in alkaline item
Activity can be not fully exerted under part, and the multinomial performance of concrete and cement is made to be greatly improved and improve.
Embodiment 2
The present embodiment the difference from embodiment 1 is that:
The bottom bar wall surrounding of the linkage shaft 20 rotates the shaft coupling rotating base 22 of fixed truncated cone-shaped, the teeter chamber 11
The fixed guide slope 26 tilted down of bottom surface surrounding.
The electromagnetism open-and-close mechanism includes putty plate 31, telescopic block 32, telescopic chute 33, adjustable spring 34 and stirring cross bar
25, the putty plate 31 is arranged in drain spout 30 and is mutually clamped with the side wall of slag mill 2 and clinker mill 4 sealing,
The outboard end of the putty plate 31 is fixed in telescopic block 32, and the sliding of telescopic block 32 is stuck in telescopic chute 33, described to stretch
Contracting slot 33 is provided with the inside of the left and right sidewall of grinding case 1, and the telescopic block 32 and the inner wall of telescopic chute 33 are laterally fixed more
Root elastic force offers the magnet communicated with outside grinding case 1 on the telescopic chute 33 to the adjustable spring 34 inside teeter chamber 11
Installing port 36 is equipped with electromagnet 35 in the magnet installing port 36.
The disc shape metal mill of cylindrical protrusions, the stone roller are equipped with centered on the slag mill 2 and clinker mill 4 are equal
Nip drum roller 5 is metal cylinder.
The working principle of the invention: the guide slope 26 of setting and shaft coupling rotating base 22 enclose an annular funnel
Slot is more efficiently discharged from stirring discharge port 12 convenient for raw material after the completion of stirring；The putty plate 31 of setting is in flexible bullet
Normal condition is stuck on the lateral wall of slag mill 2 and clinker mill 4 under the action of spring 34 and telescopic block 32, blocks drain spout
30 form a closed annular with striker plate 3, when needing to carry out blanking, open electromagnet 35, electromagnet 35 electric must have
Magnetic core attracts telescopic block 32 to 35 side of electromagnet, so that putty plate 31 is taken in telescopic chute 33, drain spout 30 is opened,
Complete the function of the closure opening of drain spout 30.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie
In the case where without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Benefit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent elements of the claims
Variation is included within the present invention.Any reference signs in the claims should not be construed as limiting the involved claims.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiments being understood that.
Claims (7)
1. a kind of fine grinding system of slag, including grinding case (1), the bottom of the grinding case (1) is by more support columns (10)
Support is on the ground, which is characterized in that is from top to bottom successively arranged clinker mill (4) and slag mill in the support column (10)
(2), the inside of grinding case (1) is from top to bottom successively divided into clinker and rolls room by clinker mill (4) and slag mill (2)
(16), slag rolls room (14) and teeter chamber (11), and the slag rolls room (14) and clinker rolls behind room (16)
Slag feed inlet (15) and clinker feed inlet (17) are offered on plate respectively, the interior bottom of the teeter chamber (11) is equipped with multiple use
In the stirring discharge port (12) of discharging, stirs and material valve deck (13), the clinker mill are installed in discharge port (12) outer openings
(4) inner top by clinker driving equipment suspension in grinding case (1), the slag mill (2) pass through linkage driving device branch
Support is led between the inside of grinding case (1), the slag mill (2) and clinker mill (4) side wall and the inner wall of support column (10)
It crosses striker plate (3) and forms closed entirety, the striker plate (3) is equipped with multiple drain spouts (30) for blanking, the material leakage
It is equipped with electromagnetism open-and-close mechanism in mouthful (30), is transversely provided with multiple roll on the top surface of the slag mill (2) and clinker mill (4)
Roller (5), the roller (5) that rolls are driven by roll motor (50) being mounted on grinding case (1) lateral wall, the stirring
The rabbling mechanism for mix cement clinker and slag is equipped in room (11).
2. the fine grinding system of slag according to claim 1, which is characterized in that the clinker driving device includes clinker
Mill bull stick (40) and clinker grinding mill disk-drive motor (41), the clinker mill bull stick (40) are vertically fixed on clinker mill (4)
End face center, the clinker mill bull stick (40) rotation is fixed in the end face center of grinding case (1), and the clinker mill turns
The top of bar (40) is fixedly linked with the motor shaft for being inversely installed in the clinker grinding mill disk-drive motor (41) of grinding case (1) top surface.
3. the fine grinding system of slag according to claim 1, which is characterized in that the linkage driving device includes linkage
Shaft (20) and linkage motor (21), the linkage shaft (20) are fixed on teeter chamber (11) center, the linkage vertically
The top of shaft (20) is fixed on the bottom center position of slag mill (2), and the bottom end of linkage shaft (20), which rotates, to be fixed
Bottom center position in grinding case (1) and motor shaft stationary phase with the linkage motor (21) for being mounted on grinding case (1) bottom surface
Even.
4. the fine grinding system of slag according to claim 3, which is characterized in that the rabbling mechanism includes stirring mobile jib
(23), strut (24) and stirring cross bar (25) are stirred, stirring mobile jib (23) is horizontally fixed on the bar wall of linkage shaft (20)
Upper two sides, vertical fixed more stirring struts (24) on the bottom bar wall of stirring mobile jib (23), the stirring strut
(24) rotation is fixed on the bar wall of stirring mobile jib (23), laterally staggered fixed more on the bar wall of stirring mobile jib (23)
It stirs cross bar (25).
5. the fine grinding system of slag according to claim 4, which is characterized in that the bottom bar of linkage shaft (20)
Wall surrounding rotates the shaft coupling rotating base (22) of fixed truncated cone-shaped, and the bottom surface surrounding of the teeter chamber (11) is fixed to dip down
Oblique guide slope (26), guide slope (26) and shaft coupling rotating base (22) enclose an annular funnel trough.
6. -5 any fine grinding system of slag according to claim 1, which is characterized in that the electromagnetism open-and-close mechanism packet
Include putty plate (31), telescopic block (32), telescopic chute (33), adjustable spring (34) and stirring cross bar (25), the putty plate
(31) setting is mutually clamped sealing, the putty in drain spout (30) and with the side wall of slag mill (2) and clinker mill (4)
The outboard end of plate (31) is fixed on telescopic block (32), and telescopic block (32) sliding is stuck in telescopic chute (33), described to stretch
Contracting slot (33) is provided with the inside of the left and right sidewall of grinding case (1), the inner wall transverse direction of the telescopic block (32) and telescopic chute (33)
The fixed more elastic force adjustable spring (34) internal to teeter chamber (11) offers and grinding case on the telescopic chute (33)
(1) the external magnet installing port (36) communicated, the magnet installing port (36) is interior to be equipped with electromagnet (35).
7. -5 any fine grinding system of slag according to claim 1, which is characterized in that the slag mill (2) and
The disc shape metal mill of cylindrical protrusions is equipped with centered on clinker mill (4) is equal, described roll roller (5) are metal cylinder.
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| CN201811575974.7A CN109590073B (en) | 2018-12-22 | 2018-12-22 | A kind of fine grinding system of slag |
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| CN201811575974.7A CN109590073B (en) | 2018-12-22 | 2018-12-22 | A kind of fine grinding system of slag |
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| CN112495548A (en) * | 2020-11-12 | 2021-03-16 | 李园媛 | Efficient raw materials grinder for bio-pharmaceuticals |
| WO2021047161A1 (en) * | 2019-09-09 | 2021-03-18 | 赣州黄金沃特发电设备有限公司 | Flywheel energy storage corn flour mill |
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| CN112604950A (en) * | 2020-12-17 | 2021-04-06 | 江苏威拉里新材料科技有限公司 | Ultrasonic vibration filtering device and filtering method |
| CN114486986A (en) * | 2021-12-16 | 2022-05-13 | 四川大学 | Frozen soil freeze thawing test's device |
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