CN111644236A - External grading grinding system and method for vertical mill for high-content fine powder raw materials - Google Patents
External grading grinding system and method for vertical mill for high-content fine powder raw materials Download PDFInfo
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- CN111644236A CN111644236A CN202010645602.8A CN202010645602A CN111644236A CN 111644236 A CN111644236 A CN 111644236A CN 202010645602 A CN202010645602 A CN 202010645602A CN 111644236 A CN111644236 A CN 111644236A
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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
- B02C15/00—Disintegrating by milling members in the form of rollers or balls co-operating with rings or discs
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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
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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
- B02C23/02—Feeding 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
- 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
- B02C23/08—Separating or sorting of material, associated with crushing or disintegrating
- B02C23/16—Separating or sorting of material, associated with crushing or disintegrating with separator defining termination of crushing or disintegrating zone, e.g. screen denying egress of oversize material
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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
- B02C23/24—Passing gas through crushing or disintegrating zone
- B02C23/30—Passing gas through crushing or disintegrating zone the applied gas acting to effect material separation
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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
- B02C23/24—Passing gas through crushing or disintegrating zone
- B02C23/32—Passing gas through crushing or disintegrating zone with return of oversize material to crushing or disintegrating zone
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B11/00—Arrangement of accessories in apparatus for separating solids from solids using gas currents
- B07B11/06—Feeding or discharging arrangements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B4/00—Separating solids from solids by subjecting their mixture to gas currents
- B07B4/02—Separating solids from solids by subjecting their mixture to gas currents while the mixtures fall
- B07B4/025—Separating solids from solids by subjecting their mixture to gas currents while the mixtures fall the material being slingered or fled out horizontally before falling, e.g. by dispersing 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
- B02C15/00—Disintegrating by milling members in the form of rollers or balls co-operating with rings or discs
- B02C2015/002—Disintegrating by milling members in the form of rollers or balls co-operating with rings or discs combined with a classifier
Abstract
The invention discloses a system and a method for grinding a fine powder high-content powdery raw material by external grading of a vertical mill.A grinding main machine comprises a grinding disc device and a grinding roller device which are arranged in a main machine cover cylinder, a material guide pipe positioned above the grinding disc is arranged in the main machine cover cylinder, and a main machine discharge hole is formed at the bottom of the main machine cover cylinder; the grading unit outside the host comprises a grader, a disperser, a hopper and a volute air inlet device which are communicated, wherein an air inlet pipe communicated with the atmosphere is arranged on the volute air inlet device, and a discharge port of the volute air inlet device is communicated with a material guide pipe through the storage hopper; the feeding unit comprises a raw material bin and a lifting machine, the raw material bin is communicated with a feeding hole of the lifting machine through a conveying metering scale, a discharging hole of the lifting machine is communicated with a classifier through a feeding screw machine, and a discharging hole of a host machine is communicated with the feeding hole of the lifting machine; the dust collection and air induction unit comprises a pulse dust collector and an induced draft fan which are communicated, and the pulse dust collector is communicated with the grader. The invention reduces the over-grinding of the fine powder in the material, improves the productivity and reduces the energy consumption.
Description
Technical Field
The invention relates to a powder processing technology, in particular to a system and a method for grinding a high-content fine powder raw material by external grading of a vertical mill.
Background
In the traditional grinding process of a vertical grinder, a feeding mode is that a material is fed into the grinder through a feeder and falls onto a grinding disc to be directly ground, and a fine powder part meeting the fineness requirement and a particle part not meeting the requirement in the material are mixed together to be ground.
Research shows that when the vertical mill grinds the material, when the content of fine powder meeting the fineness requirement in the material is more than 50%, the fine powder meeting the fineness requirement is redundant, and the excessive content of the fine powder in the material is not beneficial to the formation and the stability of a material layer of the vertical mill, so that the equipment vibrates, and the energy waste and the equipment damage are caused.
In order to reduce the accumulation of materials on the grinding disc and avoid transitional grinding, the utility model with the authorization notice number of CN 205833268U provides a vertical external circulation flour mill, which is characterized in that powder in a vertical mill host is timely led out and is separated by a grader arranged outside the vertical mill host, qualified fine powder is collected by a dust collector, and unqualified powder is led into the vertical mill host and is milled again.
Because the supplied materials are mixed with fine and coarse powder and the ratio of the fine powder to the coarse powder is different, the vertical external circulation grinding mill adopts the same undifferentiated grinding system and process for the powdery raw materials with low content of fine powder and the powdery raw materials with high content of fine powder, and only partially solves the problem of transitional grinding.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide a vertical mill external grading grinding system and a method corresponding to a powdery raw material with high content of fine powder.
The external grading grinding system of the vertical mill for the powdery raw materials with high fine powder content can solve the problems in the prior art, and the technical scheme comprises a main machine of the vertical mill, a feeding unit, an external grading unit of the main machine and a dust collection and air induction unit, wherein the external grading grinding system is different from the external grading grinding system in that:
1. the milling main machine comprises a grinding disc device and a grinding roller device which are arranged in a main machine cover cylinder, wherein a grinding disc of the grinding disc device is arranged on a base and is driven to rotate by a speed reducer, grinding rollers of the grinding roller device are uniformly distributed on the circumference and roll on a grinding surface of the grinding disc under the action of a corresponding pressure mechanism, a material guide pipe positioned above the center of the grinding disc is arranged in the main machine cover cylinder, the material guide pipe upwards extends out of the top of the main machine cover cylinder, and a main machine discharge port is formed in the bottom of the main machine cover cylinder.
2. The feeding unit comprises a raw material bin and a lifting machine, the raw material bin is communicated with a feeding hole of the lifting machine through a conveying metering scale, a discharging hole of the lifting machine is communicated with a feeding hole of the side part of the disperser through a feeding screw machine, a discharging hole at the bottom of the disperser is positioned above the center of the grinding disc, and a discharging hole of the host machine is communicated with the feeding hole of the lifting machine.
3. The grading unit outside the host comprises a grading machine, a disperser and a volute air inlet device, wherein the grading machine is arranged on the disperser, the disperser is communicated with the volute air inlet device through a hopper, the volute air inlet device is communicated with the atmosphere through an air inlet pipe, and a storage hopper communicated with a material guide pipe is arranged corresponding to a discharge hole of the volute air inlet device.
4. The dust collection and air induction unit comprises a pulse dust collector and an induced draft fan, a feed inlet of the pulse dust collector is communicated with a qualified powder discharge hole of the classifier, and an air inlet of the induced draft fan is communicated with an air outlet of the pulse dust collector.
One structure of the disperser comprises a dispersing cylinder coaxially arranged at the top of a hopper, a dispersing turntable positioned below a discharge port of a feeding screw machine is coaxially arranged in the dispersing cylinder, and the dispersing turntable is connected with a dispersing motor through a bevel gear transmission pair and a belt pulley transmission pair; in one structure of the volute air inlet device, an air inlet cylinder is communicated with the bottom of a hopper through an involute air inlet cover, an air inlet pipe penetrates through a cylinder body of the air inlet cylinder, the upper end of the air inlet pipe is coaxially arranged at the communication position of the involute air inlet cover and the hopper, and the lower end of the air inlet pipe is communicated with the atmosphere outside the air inlet cylinder.
Conventionally, the air outlet of draught fan is installed the muffler in order to reduce the noise.
The grinding process flow of the external grading grinding system adopting the vertical mill for the powdery raw materials with high content of fine powder is as follows:
1. and starting the induced draft fan.
2. The materials in the raw material bin are quantitatively fed into the elevator through the conveying and metering scale, and the elevator lifts the materials and then sends the materials into the classifier through the feeding screw machine.
3. The materials fall on the disperser in the grader, and in the disperser, the materials are scattered to the periphery and are raised by upward wind, thinner materials enter the grader under the action of wind power, qualified fine powder after separation enters the pulse dust collector to be collected, and the wind filtered by the pulse dust collector is discharged into the atmosphere through the induced draft fan.
4. The unsorted powder falls into the hopper and is lifted up again by the wind power of the volute type air inlet device, and the qualified powder contained in the unsorted powder is reclassified by the grader and enters the pulse dust collector for collection.
5. The thick powder falls into the storage hopper to be collected and is discharged on the grinding disc in a centralized way through the material guide pipe, and the thick powder is thrown to the grinding surface of the grinding disc under the action of centrifugal force and is ground by the grinding roller.
6. The grinding powder falls to the bottom of the host hood barrel through the edge of the grinding disc and is led into the elevator through the host discharge port to participate in separation again together with the newly fed materials.
The invention has the beneficial effects that:
the external grading grinding system and the external grading grinding method for the vertical mill of the powdery raw material with high content of fine powder can sort the raw material before grinding, sort out the fine powder part meeting the fineness requirement, grind the remaining coarse particles, and reduce the over grinding of the fine powder part meeting the fineness requirement in the material, thereby improving the productivity, reducing the energy consumption and improving the stability of the system operation.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of the main body of the vertical milling machine in the embodiment of fig. 1.
Fig. 3 is a schematic structural diagram of an external-host hierarchical unit in the embodiment of fig. 1.
And (3) identifying the figure number: 1. a vertical mill main machine; 1-1, a host hood cylinder; 1-2, grinding disc; 1-3, a speed reducer; 1-4, grinding rollers; 1-5, a pressurizing mechanism; 1-6, a material guide pipe; 2. a disperser; 2-1, a dispersing cylinder; 2-2, a belt pulley transmission pair; 2-3, dispersing the rotating disc; 2-4, a bevel gear transmission pair; 3. a raw material bin; 4. a hoist; 5. conveying a metering scale; 6. a feeding screw machine; 7. a storage hopper; 8. a classifier; 9. a volute air inlet device; 9-1, an air inlet cylinder; 9-2, an involute air inlet cover; 10. an air inlet pipe; 11. a pulse dust collector; 12. an induced draft fan; 13. and (4) a hopper.
Detailed Description
The technical solution of the present invention will be further explained with reference to the embodiments shown in the drawings.
The invention relates to an external grading grinding system of a vertical mill for powdery raw materials with high content of fine powder, which comprises a vertical mill main machine 1, a feeding unit, an external grading unit of the main machine and a dust collection and air induction unit.
The vertical mill main machine 1 comprises a grinding disc device and a grinding roller device which are arranged in a main machine cover cylinder 1-1, wherein a grinding disc 1-2 of the grinding disc device is arranged on a base and is driven to rotate by a motor with a speed reducer 1-3, grinding rollers 1-4 of the grinding roller device are uniformly distributed in the circumference and roll on a grinding surface of the grinding disc 1-2 under the action of a correspondingly arranged pressurizing mechanism 1-5, a material guide pipe 1-6 positioned above the grinding disc 1-2 is coaxially arranged in the main machine cover cylinder 1-1, the upper end of the material guide pipe 1-6 is led out of the top of the main machine cover cylinder 1-1, and a main machine discharge port is formed in the bottom of the main machine cover cylinder 1-1, as shown in figures 1 and 2.
The external grading unit of the host comprises a grading machine 8, a disperser 2, a hopper 13 and a volute type air inlet 9, wherein the upper opening of a dispersing cylinder 2-1 of the disperser 2 is coaxially arranged at the lower opening of a cover cylinder of the grading machine 8, the lower opening of the dispersing cylinder 2-1 is coaxially arranged at the upper opening of the hopper 13, the lower part of the cover cylinder of the grading machine 8 is provided with a feed inlet, a dispersing turntable 2-3 arranged on an output shaft of a bevel gear transmission pair 2-4 is coaxially arranged in the dispersing cylinder 2-1, and an input shaft of the bevel gear transmission pair 2-4 is connected with a belt pulley transmission pair 2-2 driven by a dispersing motor outside the dispersing cylinder 2-1; an air inlet cylinder 9-1 of the volute air inlet device 9 comprises an upper cylindrical cylinder and a lower conical cylinder, an involute air inlet cover 9-2 is coaxially arranged at the upper opening of the cylindrical cylinder of the air inlet cylinder 9-1, a lower opening of a hopper 13 is communicated with the upper cylindrical cylinder of the air inlet cylinder 9-1 through the involute air inlet cover 9-2, a discharge outlet (provided with a discharge valve) is arranged at the bottom of the conical cylinder of the air inlet cylinder 9-1, a pipe hole is formed in the conical cylinder of the air inlet cylinder 9-1 for an air inlet pipe 10 to penetrate obliquely upwards, the upper end of the air inlet pipe 10 is coaxially higher than the involute air inlet cover 9-2 and is arranged in the hopper 13, the lower end of the air inlet pipe 10 is communicated with the atmosphere outside the conical cylinder of the air inlet cylinder 9-1, the conical cylinder of the air inlet cylinder 9-1 is communicated with a guide pipe 1-6 through a storage hopper 7, fig. 2 and 3 show the drawings.
The feeding unit comprises a raw material bin 3 and a lifting machine 4, a discharge port at the bottom of the raw material bin 3 is communicated with a feed port at the lower end of the lifting machine 4 through a conveying metering scale 5 (preferably a belt metering scale), an iron remover is arranged at the communication position of the conveying metering scale 5 and the feed port of the lifting machine 4, the feed port of the lifting machine 4 is also communicated with a main machine discharge port of a main machine cover barrel 1-1 through a pipeline, a discharge port at the upper end of the lifting machine 4 is communicated with a feed port (provided with an air locking feed valve) of a feeding screw machine 6, the front part of the feeding screw machine 6 enters the cover barrel of a grading machine 8 (below a grading rotor) through the feed port from the side, and the discharge port of the feeding screw machine 6 is positioned above the center.
The dust collection and air induction unit comprises a pulse dust collector 11 and an induced draft fan 12, a feed inlet of the pulse dust collector 11 is communicated with a qualified powder discharge hole of the classifier 8, an air inlet of the induced draft fan 12 is communicated with an air outlet of the pulse dust collector 11, and an air outlet of the induced draft fan 12 is provided with a silencer, as shown in fig. 1.
The invention relates to a vertical mill external grading grinding method for a powdery raw material with high content of fine powder, which comprises the following grinding process flows:
1. and the induced draft fan 12 is started and forms a negative pressure wind flow direction from the hopper 13 to the disperser 2, from the disperser 2 to the classifier 8, from the classifier 8 to the pulse dust collector 11, from the pulse dust collector 11 to the induced draft fan 12 and from the induced draft fan 12 to the atmosphere.
2. The fine powder high-content powdery material (the proportion of the fine powder is more than or equal to 50%) in the raw material bin 3 is quantitatively fed into the elevator 4 through the conveying metering scale 5, and the elevator 4 lifts the material and then sends the material into the classifier 8 through the feeding screw machine 6.
3. The materials fall onto a dispersion rotary table 2-3 of a disperser 2 in a classifier 8, the dispersion rotary table 2-3 rotating at a high speed scatters the materials to the periphery, the dispersed materials are upwards lifted along with negative pressure wind power, in the lifting process, the thicker materials fall into a hopper 13 and are collected in a storage hopper 7 through a volute type air inlet 9, the thinner powder enters the classifier 8 under the action of the wind power and is separated by the classifier 8, qualified fine powder enters a pulse dust collector 11, a finished product is discharged from a discharge port of the pulse dust collector 11, and clean air filtered by the pulse dust collector 11 is discharged into the atmosphere through a draught fan 12 and a silencer.
4. The unsorted powder of classifier 8 falls into the hopper 13, in the hopper 13, is raised again (spiral upwards) under the action of the wind power actively entering from the involute air inlet cover 9-2, the qualified powder contained in the unsorted powder is reclassified by the classifier 8 and enters the pulse dust collector 11 for collection.
5. Unqualified powder which is not sorted by the grader 8 falls into a hopper 13 and is collected in a storage hopper 7 through a volute type air inlet device 9, and is together with coarse materials, is intensively discharged into a grinding disc 1-2 through a material guide pipe 1-6 and is thrown into a grinding surface of the grinding disc 1-2 under the action of centrifugal force to be ground by a grinding roller 1-4.
6. In the grinding process, the materials fall from the edge of the grinding disc 1-2 to the bottom of the main machine cover cylinder 1-1 and flow back to a feed inlet of the elevator 4 through a main machine discharge hole, and the elevator 4 returns the ground materials and newly-fed materials to the classifier 8 together to participate in the separation process again.
Claims (4)
1. The external grading grinding system of the vertical mill for the high-content powdery raw materials of the fine powder comprises a vertical mill main machine (1), a feeding unit, an external grading unit of the main machine and a dust collection and air induction unit, and is characterized in that:
the grinding machine main body (1) comprises a grinding disc device and a grinding roller device which are arranged in a main body cover cylinder (1-1), a grinding disc (1-2) of the grinding disc device is arranged on a base and is driven to rotate by a speed reducer (1-3), grinding rollers (1-4) of the grinding roller device are uniformly distributed on the circumference and roll on a grinding surface of the grinding disc (1-2) under the action of a correspondingly arranged pressurizing mechanism (1-5), a material guide pipe (1-6) positioned above the center of the grinding disc (1-2) is arranged in the main body cover cylinder (1-1), the material guide pipe (1-6) extends upwards out of the top of the main body cover cylinder (1-1), and a main body discharge hole is formed in the bottom of the main body cover cylinder (1-1);
the grading unit outside the host comprises a grading machine (8), a disperser (2) and a volute type air inlet device (9), wherein the grading machine (8) is arranged on the disperser (2), the disperser (2) is communicated with the volute type air inlet device (9) through a hopper (13), the volute type air inlet device (9) is communicated with the atmosphere through an air inlet pipe (10), and a storage hopper (7) communicated with material guide pipes (1-6) is arranged corresponding to a discharge hole of the volute type air inlet device (9);
the feeding unit comprises a raw material bin (3) and a lifting machine (4), the raw material bin (3) is communicated with a feeding hole of the lifting machine (4) through a conveying metering scale (5), a discharging hole of the lifting machine (4) is communicated with a classifier (8) through a feeding screw machine (6), and a discharging hole of the main machine is communicated with the feeding hole of the lifting machine (4);
the dust collection and air induction unit comprises a pulse dust collector (11) and an induced draft fan (12), a feed inlet of the pulse dust collector (11) is communicated with a qualified powder discharge hole of the classifier (8), and an air inlet of the induced draft fan (12) is communicated with an air outlet of the pulse dust collector (11).
2. The external staged milling system of a vertical mill for high content of fine powder raw material as claimed in claim 1, wherein: the disperser (2) comprises a dispersing cylinder (2-1) coaxially mounted at the top of the hopper (13), a dispersing turntable (2-3) positioned below a discharge hole of the feeding screw machine (6) is coaxially arranged in the dispersing cylinder (2-1), and the dispersing turntable (2-3) is connected with a dispersing motor through a bevel gear transmission pair (2-4) and a belt pulley transmission pair (2-2); an air inlet cylinder (9-1) of the volute type air inlet device (9) is communicated with the bottom of the hopper (13) through an involute type air inlet cover (9-2), the air inlet pipe (10) penetrates through a cylinder body of the air inlet cylinder (9-1), the upper end of the air inlet pipe (10) is coaxially arranged at the communication position of the involute type air inlet cover (9-2) and the hopper (13), and the lower end of the air inlet pipe (10) is communicated with the atmosphere outside the air inlet cylinder (9-1).
3. The external staged milling system for a vertical mill for high content of fine powder as claimed in claim 1 or 2, wherein: and a silencer is arranged at an air outlet of the induced draft fan (12).
4. The external graded grinding method of the vertical mill for the powdery raw material with high content of fine powder is characterized in that an external graded grinding system of the vertical mill for the powdery raw material with low content of fine powder according to claim 1 or 2 is adopted, and the grinding process flow is as follows:
firstly, starting a draught fan (12);
secondly, materials in the raw material bin (3) are quantitatively fed into a lifting machine (4) through a conveying metering scale (5), and the materials are lifted by the lifting machine (4) and then are conveyed into a grading machine (8) through a feeding screw machine (6);
thirdly, the materials fall down in the disperser (2) in the classifier (8), the materials are scattered to the periphery and are lifted by upward wind in the disperser (2), thinner materials enter the classifier (8) under the action of wind power, qualified fine powder after sorting enters the pulse dust collector (11) for collection, and the wind filtered by the pulse dust collector (11) is discharged into the atmosphere through the induced draft fan (12);
the unsorted powder falls into a hopper (13) and is lifted up again by the wind power of a volute type air inlet device (9), and the qualified powder contained in the unsorted powder is reclassified by a grader (8) and enters a pulse dust collector (11) for collection;
the coarse powder falls into a storage hopper (7) to be collected and is intensively discharged onto a grinding disc (1-2) through a material guide pipe (1-6), and the coarse powder is thrown to the grinding surface of the grinding disc (1-2) under the action of centrifugal force and is ground by a grinding roller (1-4) after being added with water;
dropping the ground powder on the bottom of the main machine cover cylinder (1-1) through the edge of the grinding disc (1-2), leading the ground powder into the elevator (4) through the discharge hole of the main machine, and then carrying out secondary separation on the ground powder and the newly fed materials.
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Cited By (1)
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CN113499843A (en) * | 2021-07-27 | 2021-10-15 | 信诺科技(天津)有限公司 | Cement finish grinding system based on roller press |
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Publication number | Priority date | Publication date | Assignee | Title |
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CN113499843A (en) * | 2021-07-27 | 2021-10-15 | 信诺科技(天津)有限公司 | Cement finish grinding system based on roller press |
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