CN115487909A - Grinding system and method for silicon micropowder - Google Patents

Grinding system and method for silicon micropowder Download PDF

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Publication number
CN115487909A
CN115487909A CN202211294430.XA CN202211294430A CN115487909A CN 115487909 A CN115487909 A CN 115487909A CN 202211294430 A CN202211294430 A CN 202211294430A CN 115487909 A CN115487909 A CN 115487909A
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Prior art keywords
grinding
powder
magnetic separation
disc
motor
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CN202211294430.XA
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Chinese (zh)
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CN115487909B (en
Inventor
周蔚
徐亚新
尹钢明
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Guangzhou Yushun New Material Co ltd
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Guangzhou Yushun New Material Co ltd
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Priority to CN202211294430.XA priority Critical patent/CN115487909B/en
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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
    • B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
    • B02C17/16—Mills in which a fixed container houses stirring means tumbling the charge
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
    • B02C17/16—Mills in which a fixed container houses stirring means tumbling the charge
    • B02C17/163—Stirring means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
    • B02C17/18—Details
    • B02C17/183—Feeding or discharging devices
    • B02C17/1835—Discharging devices combined with sorting or separating of 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
    • B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
    • B02C17/18—Details
    • B02C17/183—Feeding or discharging devices
    • B02C17/186—Adding fluid, other than for crushing by fluid energy
    • B02C17/1865—Adding fluid, other than for crushing by fluid energy after crushing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C25/00—Control arrangements specially adapted for crushing or disintegrating
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/62—Plastics recycling; Rubber recycling

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  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Grinding-Machine Dressing And Accessory Apparatuses (AREA)
  • Crushing And Grinding (AREA)

Abstract

The invention belongs to the field of machining, and particularly relates to a system and a method for grinding silicon micropowder, wherein the system comprises a grinder body and a motor, and the motor comprises a rotating shaft, the rotating shaft is fixedly provided with a grinding cylinder, a spiral magnetic separation disc and a recovery ball grinding disc from top to bottom in sequence, the grinding cylinder comprises an outer cylinder and an inner cylinder which are sleeved, the bottom of the inner cylinder is provided with a plurality of inner cylinder outlets, the outer cylinder is communicated with the inner cylinder through the inner cylinder outlets, the bottom of the outer cylinder is provided with a connecting channel and is communicated with the spiral magnetic separation disc through the connecting channel, the spiral magnetic separation disc comprises a powder inlet arranged close to the center and a powder outlet arranged at the edge, a spiral channel is arranged between the powder inlet and the powder outlet, an electromagnetic coil is arranged in a chassis of the spiral magnetic separation disc, the classification collector is communicated with a plurality of powder trapping ports through a pipeline, and the powder trapping ports are distributed on the inner wall of a shell at positions corresponding to the powder outlets.

Description

Grinding system and method for silicon micropowder
Technical Field
The invention belongs to the field of machining, and particularly relates to a grinding system and method for silicon micropowder.
Background
In the prior art, powder grinding, magnetic separation and classification are performed by using different devices, dust dispersion can be caused in the transfer process, environmental pollution is caused, and human health is influenced, for example, in the prior art, a CN201821540642.0 regenerative tire grinding and sorting system is provided, the magnetic separator comprises a rubber block crusher and a magnetic separator, the magnetic separator comprises a rubber powder belt conveyor, a metal scrap belt conveyor, a magnetic separation roller, a cover body and a rubber powder tiling device, the discharge end of the rubber powder belt conveyor is higher than the feed end, the feed end of the rubber powder belt conveyor is positioned below a rubber powder discharge port of a vibrating screen, the metal scrap belt conveyor is positioned on one side of the discharge end of the rubber powder belt conveyor, when the rubber powder enters the lower part of the magnetic separation roller, a fan-shaped magnet adsorbs metal in the magnetic separation roller on a rolling surface of the rubber powder belt, when the metal rotates to a region separated from the fan-shaped magnet, the metal is thrown off from the magnetic separation roller, the metal scrap thrown off cover body falls onto the metal scrap belt conveyor, the magnetic separation roller is installed through a screw, and the problem that the metal scrap falling off of the magnetic separation roller is taken away from the magnetic separation roller, and the metal scrap conveyor is solved, and the problem that the secondary rubber powder grinding process of the magnetic separation roller is that the existing metal scrap conveyor is not required by the magnetic separation roller.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a grinding system and method of silicon micropowder.
The technical scheme adopted by the invention for solving the technical problems is as follows: grinding system of silica micropowder, including grinding quick-witted body and motor, grind quick-witted body and include the casing, the inside central point of casing puts the pivot that is equipped with through the bearing, the motor shaft interlock of belt and motor is passed through in the pivot, pivot from the top down is fixed grinding vessel, spiral magnetic separation dish, the recovery ball mill of being equipped with in proper order, the grinding vessel is including the urceolus, the inner tube that the cover was established, the bottom of inner tube is equipped with a plurality of inner tube exports, and the urceolus passes through inner tube export and inner tube intercommunication, the bottom of urceolus is equipped with interface channel, through interface channel and spiral magnetic separation dish intercommunication, spiral magnetic separation dish is including setting up at the powder import that is close to central point and setting up the powder export at the edge, be equipped with spiral channel between powder import and the powder export, spiral magnetic separation dish's chassis embeds there is solenoid, still includes hierarchical collector, hierarchical collector passes through a plurality of powder entrapment mouths of pipeline intercommunication, powder entrapment mouth distributes in the position that shell inner wall corresponds the powder export.
Furthermore, the grinding cylinder is obliquely fixed on the rotating shaft through a first fixing piece, the spiral magnetic separation disc is horizontally fixed on the rotating shaft through a second fixing piece, and the recovery ball milling disc is horizontally fixed on the rotating shaft through a third fixing piece.
Furthermore, a plurality of grinding rods are fixedly arranged on the corresponding rotating shaft in the grinding cylinder.
Furthermore, a first-stage filtering screen is arranged in the outlet of the inner barrel, and a second-stage filtering screen is arranged in the connecting channel.
Further, the spiral magnetic separation disc comprises a top disc and a bottom disc, and a spiral baffle is arranged between the top disc and the bottom disc and serves as a spiral channel.
The grinding method of the silicon micropowder comprises the following steps:
putting quartz powder into an inner cylinder of a grinding roller, grinding the quartz powder into silicon powder through a grinding rod and a grinding medium, primarily filtering the silicon powder to an outer cylinder through a first-grade filter screen, then carrying out second-grade grinding in the outer cylinder until the silicon powder can pass through a second-grade filter screen, then entering a magnetic separation disc, enabling the silicon powder to pass through a spiral channel of the spiral magnetic separation disc to an outlet position through rotation, enabling a powder trapping port to trap the silicon powder with corresponding grade through different negative pressure regulation and control in a grading collector, and further refining and grading the silicon powder;
and for silicon powder which does not meet the grading requirement, the silicon powder directly falls into the recovery ball grinding disc at the bottom, and continuously rotates synchronously along with the rotating shaft, the ball grinding medium is used for continuously carrying out ball grinding, the silicon powder in the recovery ball grinding disc is uniformly collected after the machine is stopped, the silicon powder is fed from the material port again, the grinding and magnetic separation grading operation is continuously carried out, and the steps of circular grinding, magnetic separation and grading are carried out.
Further, the step of collecting the silica powder of the corresponding gradation at the powder collecting port by different negative pressure regulation and control in the classifying collector concretely comprises the steps of providing a negative pressure pump in the classifying collector, and controlling the relation between the rotation of the motor and the power of the negative pressure pump in the classifying collector:
firstly, controlling the rotation of a motor according to cycles, gradually accelerating the motor to Vmax in each rotation cycle, and then decelerating the motor to Vmin by taking a function F with unknown parameters as a deceleration rate, wherein F is a function related to time, and the unknown parameters in the function have initial values; controlling the power of a negative pressure pump in the grading collector in the deceleration process of the motor to take a function F with unknown parameters as a target value, wherein F is a function related to time, and the unknown parameters in the function have initial values; and adjusting and determining the most preferable combination of the unknown parameters of F and F for different grinding targets in the rotation of the motor and the power change of the negative pressure pump in the grading collector, and performing feedback control on the rotation of the motor and the power change of the negative pressure pump in the grading collector, so that the silicon micro powder with corresponding grading can be collected based on the powder collecting port.
Advantageous effects
The grinding system provided by the invention integrates grinding, magnetic separation and classification into a whole, and is arranged on a rotating shaft to synchronously rotate, so that the energy is saved and the emission is reduced, materials are ground into fine particles from a grinding inner cylinder through a grinding rod and a grinding medium, the ground particles enter an outer cylinder from an outlet at the bottom of the inner cylinder along with the rotation of the rotating shaft, are continuously ground in the outer cylinder and then enter a spiral magnetic separation disc through a magnetic separation channel, an inlet of the spiral magnetic separation disc is arranged at a position close to the center, an outlet is arranged at the edge of a disc body, a spiral channel is arranged from the inlet to the outlet, an electromagnetic coil is arranged in the disc, so that the magnetic separation is more sufficient, a powder collecting port is arranged at the outlet of the spiral magnetic separation disc, powder with the wind negative pressure regulation of a classification collector, powder with different particle sizes is collected, the ground silicon powder is subjected to classification collection, the obtained silicon powder meets the classification requirement of classification, the purity is high, the silicon powder with larger particle size cannot be collected by the powder collecting port, a recovery ball grinding disc at the bottom, the grinding disc continuously rotates synchronously along with the rotating shaft, the ball milling medium is continuously subjected to ball milling, the uniform ball collection after the shutdown, the recovery ball in the recovery ball is collected, and the grinding disc is put into a material port again, and the grinding operation of the magnetic separation operation is carried out again.
The grinding cylinder is obliquely fixed on the rotating shaft through the first fixing piece, eccentric grinding is carried out, and grinding media are concentrated, so that grinding is more sufficient and fine. Further be provided with the negative pressure pump in this application fractional collector, the rotation of control motor and the relation between the interior negative pressure pump power of fractional collector, powder entrapment mouth can the entrapment silica micropowder of corresponding gradation like this.
Drawings
FIG. 1 is a schematic view of the overall structure of the fine silica powder grinding system of the present invention;
FIG. 2 is a top view of a spiral magnetic separation disk in the micropowder grinding system of the invention;
FIG. 3 is a schematic diagram showing the internal structure of a spiral magnetic separation disk in the fine silicon powder grinding system of the present invention.
In the figure, 1, a grinder body, 2, a shell, 3, a motor, 4 rotating shafts, 41, a grinding rod, 42, a first fixing piece, 43, a second fixing piece, 44, a third fixing piece, 5, a grinding cylinder, 51, an outer cylinder, 52, an inner cylinder, 53, an inner cylinder outlet, 54, a connecting channel, 6, a spiral magnetic separation disc, 61, a powder inlet, 62, a powder outlet, 63, a spiral channel, 7, a recovery ball grinding disc, 8, a grading collector, 9, a powder collecting port and 10, a material inlet.
Detailed Description
The application discloses grinding system of silica micropowder, as shown in fig. 1-3, including grinding machine body 1 and motor 3, grinding machine body 1 includes casing 2, the inside central point of casing 2 puts the pivot 4 that is equipped with through the bearing, the motor shaft interlock of pivot 4 through belt and motor 3, 4 from the top down in proper order fixes being equipped with grinding vessel 5, spiral magnetic separation dish 6, retrieves ball-milling dish 7, the urceolus 51, the inner tube 52 that grinding vessel 5 was established including the cover, the bottom of inner tube 52 is equipped with a plurality of inner tube exports 53, and urceolus 51 passes through inner tube export 53 and inner tube 52 intercommunication, the bottom of urceolus 51 is equipped with interface channel 54, through interface channel 54 and 6 intercommunication of spiral magnetic separation dish, spiral magnetic separation dish 6 is including setting up at the powder import 61 that is close to central point and setting up at the powder export 62 at the edge, be equipped with spiral passageway 63 between powder import 61 and the powder export 62, spiral magnetic separation dish 6 is including top dish and chassis, and the baffle that is provided with the spiral shape between top dish and the chassis is as spiral passageway 63. An electromagnetic coil is arranged in a chassis of the spiral magnetic separation disc 6, the spiral magnetic separation disc also comprises a grading collector 8, the grading collector 8 is communicated with a plurality of powder collecting ports 9 through pipelines, and the powder collecting ports 9 are distributed on the inner wall of the shell 2 at positions corresponding to the powder outlets 62; grinding and magnetic separation are arranged on a rotating shaft 4 to synchronously rotate, energy is saved, emission is reduced, materials are ground into fine particles from a grinding inner barrel 51 through a grinding rod 41 and a grinding medium, the ground particles enter an outer barrel from an outlet at the bottom of the inner barrel along with the rotation of the rotating shaft 4, the particles are continuously ground in the outer barrel and then enter a spiral magnetic separation disc 6 through a connecting channel 54, an inlet of the spiral magnetic separation disc 6 is arranged at a position close to the center, an outlet is arranged at the edge of a disc body, a spiral-shaped channel is arranged from the inlet to the outlet, an electromagnetic coil is arranged in the disc, magnetic separation is more sufficient, a powder collecting port 9 is arranged at the outlet of the spiral magnetic separation disc 6, powder with different particle sizes is collected through wind power adjustment of a grading collector 8, the ground silicon powder is collected in a grading mode, the obtained silicon powder meets grading requirements, the purity is high, the silicon powder with larger particle size cannot be collected by the powder collecting port 9, the recovery ball milling disc 7 falls into the bottom, the synchronous rotation is continuously performed along with the rotating shaft 4, ball milling medium, the silicon powder in the recovery ball milling disc 7 after the machine is stopped, and the silicon powder is uniformly collected from the material, and the material is put into the grading operation.
The grinding cylinder 5 is obliquely fixed on the rotating shaft 4 through a first fixing piece 42, the spiral magnetic separation disc 6 is horizontally fixed on the rotating shaft 4 through a second fixing piece 43, and the recovery ball grinding disc 7 is horizontally fixed on the rotating shaft 4 through a third fixing piece 44.
The grinding cylinder is obliquely fixed on the rotating shaft 4 through the first fixing piece, eccentric grinding is carried out, and grinding media are concentrated, so that grinding is more sufficient and fine.
And a plurality of grinding rods 41 are fixedly arranged on the corresponding rotating shaft 4 in the grinding cylinder 5, so that more sufficient grinding is facilitated.
The inner cylinder outlet 53 is provided with a first-stage filter screen, the connecting channel 54 is provided with a second-stage filter screen, and the primary layer-by-layer screening is realized by arranging filter screens with different meshes.
The application also discloses a grinding method of the silicon micropowder, which comprises the following steps: putting quartz powder into an inner cylinder of a grinding roller, grinding the quartz powder into silica powder through a grinding rod and a grinding medium, putting the quartz powder into the inner cylinder of the grinding roller through a primary grade, grinding the silica powder into the silica powder through a grinding rod 41 and a grinding medium, primarily filtering the silica powder to an outer cylinder through a primary graded filter screen, then carrying out secondary grinding in the outer cylinder until the silica powder can pass through the secondary graded filter screen, then entering a magnetic separation disc, enabling the silica powder to pass through a spiral channel of a spiral magnetic separation disc 6 to an outlet position through rotation, enabling a powder trapping port 9 to trap the silica powder of the corresponding grade through different negative pressure regulation and control in a grading collector 8, and further refining and grading the silica powder;
and for silicon powder which does not meet the grading requirement, the silicon powder directly falls into the recovery ball-milling disc 7 at the bottom, and continuously rotates synchronously along with the rotating shaft 4, the ball-milling medium is used for continuously performing ball-milling, the silicon powder in the recovery ball-milling disc 7 is uniformly collected after the machine is stopped, the silicon powder is fed from the material port again, the grinding and magnetic separation grading operation is continuously performed, and the steps of circular grinding, magnetic separation and grading are performed.
In specific implementation, "through different negative pressure regulation and control in the classified collector for the silica powder of the corresponding gradation of powder entrapment mouth entrapment" specifically, be provided with the negative pressure pump in the classified collector 8, control the relation between the rotation of motor 3 and the negative pressure pump power in the classified collector 8:
the rotation of the motor 3 is first controlled periodically, the motor 3 being accelerated gradually to Vmax during each rotation period and then as a function F with unknown parameters 0 Deceleration to Vmin, where F 0 As a function of time, the unknown parameters in the function have initial values; controlling the power of the negative pressure pump in the classification collector 8 during deceleration of the motor 3 to bringFunction F of unknown parameters 2 As target value, wherein F 2 As a function of time, the unknown parameters in the function have initial values; the determination F is adjusted for different grinding targets during the rotation of the motor 3 and the change in the output of the negative pressure pump in the classifying collector 8 0 And F 2 And feedback control of the rotation of the motor 3 and the variation of the power of the negative pressure pump in the classification collector 8.
In further implementation, after the particle diameter of the grinding target is determined, the centrifugal position change function of the particles of the grinding target in the deceleration process of the motor 3 can be calculated, and then F is calculated 0 And F is the function of the change of the centrifugal position when the unknown parameter is adjusted 2 When the function of the change of the centrifugal position is matched with F 2 Is optimized, i.e. the ratio of the grinding target particles to be absorbed by the classifying collector 8 is ensured to be optimized, in which case F 2 Unknown parameter of and F 0 Is the most preferred combination.
It will be appreciated by those skilled in the art that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The embodiments disclosed above are illustrative in all respects and not restrictive. All changes which come within the scope of or are equivalent to the scope of the invention are intended to be embraced therein.

Claims (7)

1. Grinding system of silica powder, its characterized in that, including grinding machine body (1) and motor (3), grinding machine body (1) includes casing (2), the inside central point of casing (2) puts pivot (4) that is equipped with through the bearing, the motor shaft interlock of pivot (4) through belt and motor (3), pivot (4) from the top down is fixed in proper order and is equipped with grinding vessel (5), spiral magnetic separation dish (6), retrieves ball-milling dish (7), urceolus (51), inner tube (52) established including the cover in grinding vessel (5), the bottom of inner tube (52) is equipped with a plurality of inner tube exports (53), urceolus (51) are through inner tube export (53) and inner tube (52) intercommunication, the bottom of urceolus (51) is equipped with connect the passageway (54), through connect passageway (54) and spiral magnetic separation dish (6) intercommunication, spiral magnetic separation dish (6) are including setting up at powder import (61) and the powder export (62) of setting at the edge that are close to central point of putting, powder import (61) and powder export (62) are equipped with spiral magnetic separation dish (63), spiral magnetic separation dish (6) is equipped with the classified collection dish (8), the electromagnetic coil (8) is including the hierarchical pipeline (8) that the ground, the hierarchical dust collector (8) still include the electromagnetic coil (8), the powder collecting openings (9) are distributed on the inner wall of the shell (2) at positions corresponding to the powder outlets (62).
2. The system for grinding the silicon micropowder according to claim 1, wherein the grinding cylinder (5) is fixed on the rotating shaft (4) obliquely through a first fixing member (42), the spiral magnetic separation disc (6) is horizontally fixed on the rotating shaft (4) through a second fixing member (43), and the recovery ball grinding disc (7) is horizontally fixed on the rotating shaft (4) through a third fixing member (44).
3. The system for grinding the silicon micropowder according to claim 1, wherein a plurality of grinding rods (41) are fixedly arranged on the corresponding rotating shaft (4) in the grinding cylinder (5).
4. The system for grinding fine silica powder according to claim 1, wherein a primary filter screen is provided in the inner drum outlet (53), and a secondary filter screen is provided in the connecting passage (54).
5. The system for grinding fine silicon powder according to claim 1, wherein the spiral magnetic separation disc (6) comprises a top disc and a bottom disc, and a spiral baffle is arranged between the top disc and the bottom disc as a spiral channel (63).
6. A method for grinding fine silica powder by using the system for grinding fine silica powder according to any one of claims 1 to 5, comprising the steps of:
putting quartz powder into an inner cylinder of a grinding roller, grinding the quartz powder into silicon powder through a grinding rod and a grinding medium, primarily filtering the silicon powder to an outer cylinder through a first-grade filter screen, then carrying out second-grade grinding in the outer cylinder until the silicon powder can pass through a second-grade filter screen, then entering a magnetic separation disc, enabling the silicon powder to pass through a spiral channel of the spiral magnetic separation disc to an outlet position through rotation, enabling a powder trapping port to trap the silicon powder with corresponding grade through different negative pressure regulation and control in a grading collector, and further refining and grading the silicon powder;
and for silicon powder which does not meet the grading requirement, the silicon powder directly falls into the recovery ball grinding disc at the bottom, and continuously rotates synchronously along with the rotating shaft, the ball grinding medium is used for continuously carrying out ball grinding, the silicon powder in the recovery ball grinding disc is uniformly collected after the machine is stopped, the silicon powder is fed from the material port again, the grinding and magnetic separation grading operation is continuously carried out, and the steps of circular grinding, magnetic separation and grading are carried out.
7. The method for grinding fine silicon powder according to claim 6, wherein the fine silicon powder of the corresponding gradation is collected at the powder collecting port by different negative pressure control in the classifying collector, specifically, a negative pressure pump is provided in the classifying collector (8), and the relationship between the rotation of the motor (3) and the power of the negative pressure pump in the classifying collector (8) is controlled:
the rotation of the motor (3) is controlled periodically, the motor (3) is accelerated to Vmax gradually in each rotation period, and then a function F with unknown parameters is used 0 For deceleration to Vmin, where F 0 As a function of time, the unknown parameters in the function have initial values; controlling the power of the negative pressure pump in the classification collector (8) during deceleration of the motor (3) to take a function F of unknown parameters 2 As target value, wherein F 2 As a function of time, the unknown parameters in the function have initial values; adjusting the determination F for different grinding targets during the rotation of the motor (3) and the change in the output of the vacuum pump in the classifying collector (8) 0 And F 2 And feedback-controlling the rotation of the motor (3) and the change of the power of the negative pressure pump in the grading collector (8), and collecting the silicon powder with corresponding grading based on the powder collecting port.
CN202211294430.XA 2022-10-21 2022-10-21 Grinding system and method for silicon micropowder Active CN115487909B (en)

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CN115487909B CN115487909B (en) 2023-04-25

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013180240A (en) * 2012-03-01 2013-09-12 Ihi Corp Biomass mill
CN106423508A (en) * 2016-11-29 2017-02-22 上海科利瑞克机器有限公司 Dry superfine grinding system
CN208896307U (en) * 2018-09-20 2019-05-24 湖北耐特胶业有限公司 A kind of waste tire recycling oil refining production line
CN210058446U (en) * 2019-05-31 2020-02-14 崇阳县明炬橡胶股份有限公司 Fine grinding rubber powder production equipment
CN211840032U (en) * 2019-11-25 2020-11-03 青岛常润新材料有限公司 Clay sand is purifier for processor
CN113976277A (en) * 2021-10-18 2022-01-28 天津水泥工业设计研究院有限公司 Cement external circulation vertical mill combined high-performance grinding process system

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013180240A (en) * 2012-03-01 2013-09-12 Ihi Corp Biomass mill
CN106423508A (en) * 2016-11-29 2017-02-22 上海科利瑞克机器有限公司 Dry superfine grinding system
CN208896307U (en) * 2018-09-20 2019-05-24 湖北耐特胶业有限公司 A kind of waste tire recycling oil refining production line
CN210058446U (en) * 2019-05-31 2020-02-14 崇阳县明炬橡胶股份有限公司 Fine grinding rubber powder production equipment
CN211840032U (en) * 2019-11-25 2020-11-03 青岛常润新材料有限公司 Clay sand is purifier for processor
CN113976277A (en) * 2021-10-18 2022-01-28 天津水泥工业设计研究院有限公司 Cement external circulation vertical mill combined high-performance grinding process system

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