WO2010074603A1 - Способ измельчения материала и устройство для его осуществления - Google Patents
Способ измельчения материала и устройство для его осуществления Download PDFInfo
- Publication number
- WO2010074603A1 WO2010074603A1 PCT/RU2009/000671 RU2009000671W WO2010074603A1 WO 2010074603 A1 WO2010074603 A1 WO 2010074603A1 RU 2009000671 W RU2009000671 W RU 2009000671W WO 2010074603 A1 WO2010074603 A1 WO 2010074603A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- grinding chamber
- air
- mixture
- crushed material
- blades
- Prior art date
Links
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
- B02C19/00—Other disintegrating devices or methods
- B02C19/0012—Devices for disintegrating materials by collision of these materials against a breaking surface or breaking body and/or by friction between the material particles (also for grain)
- B02C19/0018—Devices for disintegrating materials by collision of these materials against a breaking surface or breaking body and/or by friction between the material particles (also for grain) using a rotor accelerating the materials centrifugally against a circumferential breaking surface
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C13/00—Disintegrating by mills having rotary beater elements ; Hammer mills
- B02C13/20—Disintegrating by mills having rotary beater elements ; Hammer mills with two or more co-operating rotors
- B02C13/205—Disintegrating by mills having rotary beater elements ; Hammer mills with two or more co-operating rotors arranged concentrically
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C19/00—Other disintegrating devices or methods
- B02C19/0012—Devices for disintegrating materials by collision of these materials against a breaking surface or breaking body and/or by friction between the material particles (also for grain)
- B02C19/0018—Devices for disintegrating materials by collision of these materials against a breaking surface or breaking body and/or by friction between the material particles (also for grain) using a rotor accelerating the materials centrifugally against a circumferential breaking surface
- B02C19/0031—Devices for disintegrating materials by collision of these materials against a breaking surface or breaking body and/or by friction between the material particles (also for grain) using a rotor accelerating the materials centrifugally against a circumferential breaking surface by means of an open top rotor
- B02C19/0037—Devices for disintegrating materials by collision of these materials against a breaking surface or breaking body and/or by friction between the material particles (also for grain) using a rotor accelerating the materials centrifugally against a circumferential breaking surface by means of an open top rotor with concentrically arranged open top rotors
Definitions
- the invention relates to devices for grinding materials of mineral and plant origin and can be used in the construction, mining, chemical, energy and other industries.
- a known method of grinding material including the supply of the crushed material, dispersal of the crushed material with the formation of jets of the mixture from the crushed material and air and the subsequent supply of the mixture to the grinding chamber and the removal of the finished product.
- a device for grinding material is known, with the help of which the above technology is implemented and which comprises a housing with devices for supplying the material to be ground and for removing the finished product, a grinding chamber coaxially mounted in the housing with the possibility of rotation of two rotors and mounted on one of the rotors of the nozzle for the formation of jets of a mixture of crushed material and air.
- the material is milled by performing multiple collisions of the milled material with rotating targets, which are located on concentric circles and are mounted on rotors.
- the known method and apparatus described above allow a large percentage of unmilled particles of the material to be ground in the finished product due to the possibility that some particles of the material to be ground may not come into contact with at least some of the targets.
- the appearance of ground particles in the finished product reduces its uniformity, which, in turn, requires re-grinding.
- the implementation of known technologies and the device requires increased energy consumption, since the grinding of the material is carried out only due to the collision of the particles of destructible material with an artificial obstacle (targets). This circumstance increases the energy intensity of the grinding process.
- the closest in technical essence and in the achieved technical result to the claimed technology is a method of grinding material, including the supply of the crushed material, dispersal of the crushed material with the formation of jets of the mixture from the crushed material and air and subsequent supply of the mixture to the annular grinding chamber, the simultaneous supply to the annular grinding chamber air flow towards the jets of the mixture and removal of the finished product.
- the closest in technical essence and in the achieved technical result to the claimed method is a device for grinding material, which contains a housing with devices respectively for feeding the crushed material and for removing the finished product, a grinding chamber of a ring shape coaxially mounted in the housing with the possibility of rotation of two rotors, blades mounted on one of the rotors for acceleration and feeding of the crushed material into the grinding chamber and blades mounted on the second rotor for Get air into the grinding chamber.
- the known technologies and devices selected as the closest analogues partially eliminate the disadvantages of the known technical solutions described above, since they reduce the energy consumption of the grinding process due to the impact of the oncoming air flow in the grinding chamber on the particles to be ground.
- the disadvantages of the known technical solutions include the impossibility of grinding materials with a given dispersion due to the relatively large percentage of non-ground particles of materials in the finished product. As a result, the manufacturer the process is reduced due to the need for repeated grinding of the material.
- the invention is aimed at solving the problem of creating such a technology and device that would ensure high performance of the process of grinding material.
- the technical result that can be obtained by implementing the invention is to reduce the percentage of unmilled particles of the material by increasing the residence time of the particles of the crushed material in the grinding chamber while simultaneously intensifying the process of collision of the particles of crushed material with each other.
- the problem is solved due to the fact that in the method of grinding the material, which includes the supply of the crushed material, dispersal of the crushed material with the formation of jets of a mixture of crushed material and air and subsequent supply of the mixture to the annular grinding chamber, the simultaneous flow of air into the annular grinding chamber towards the jets of the mixture and removal of the finished product, along the perimeter of the annular grinding chamber create local periodic changes in pressure and flow rate air and / or pressure and velocity of the jets of the mixture.
- the problem is solved due to the fact that in the device for grinding material, which contains a housing with devices respectively for feeding the crushed material and for removing the finished product, the grinding chamber is annular, coaxially mounted in the housing with the possibility of rotation of two rotors mounted on one of the rotors of the blade for dispersal and supply of the crushed material to the grinding chamber and blades mounted on the second rotor for supplying air to the grinding chamber, the blades for acceleration and under
- the materials to be ground into the grinding chamber and / or blades for supplying air to the grinding chamber are installed with a variable pitch.
- FIG. 1 shows a device for grinding material, a section
- FIG. 2 is a section along AA in FIG. one.
- the material is preliminarily prepared for grinding by breaking it down to particles of a certain size using any known device, for example, using a crusher or mill. Then, the material thus ground up is fed into the grinding chamber using any known device depending on the loading location, for example, by force using a screw feeder or by gravity using a loading funnel and a batcher.
- the crushed material it is accelerated, that is, the speed of its movement is increased. Simultaneously with the acceleration of the crushed material, the formation of jets of the mixture consisting of the crushed material and air is formed, and the subsequent supply of jets of the mixture directly to the grinding chamber.
- an air flow is directed into the annular grinding chamber towards the jets of the mixture, consisting of the crushed material and air.
- particles of ground material moving at high speed in a jet of a mixture under the action of an air flow moving towards them change the direction of motion in the opposite direction and collide with particles of ground material coming into the grinding chamber after them.
- the particles of the crushed material collide they are destroyed.
- around the perimeter of the annular grinding chamber create local periodic changes in the pressure and air flow rate and / or pressure and the speed of the jets of the mixture. According to one embodiment of the method, only the pressure and the velocity of the air flow entering towards the jet of the mixture are changed, and the magnitude of the pressure and velocity of the mixture jets remains unchanged.
- the particles of the crushed material are subjected to a local periodically changing effect either from the side of the air flow, or from the side of the jets of the mixture, or from both sides simultaneously.
- the amount of displacement of particles of the crushed material in the annular grinding chamber increases significantly, which significantly increases the probability of collision of the particles of crushed material with each other.
- the finished product is removed from the annular grinding chamber using any known device, depending on the place of unloading, for example, using a fan or discharge pipe.
- any known device for example, using a fan or discharge pipe.
- a device for grinding material contains a housing 1 with a device 2 for feeding the crushed material (shown schematically in the drawings) and with a device 3 for removing the finished product (shown schematically in the drawings).
- the device 2 for feeding the crushed material into the housing 1 of the device can be made, for example, in the form of a screw feeder (with a vertical arrangement of the housing 1) of any known design, forcing the grind material into the cavity of the housing 1, or a funnel with a dispenser (with a horizontal arrangement of the housing 1) through which the crushed material in certain volumes under the action of gravity enters the cavity of the housing 1.
- Device 3 for removing the finished product from the housing 1 device can be performed, for example, in the form of a pipe (with a vertical arrangement of the housing 1) through which the finished material is removed from the housing under the action of gravity, or in the form of an air pump (with the horizontal location of the housing 1), which forcibly removes the finished product from housing 1.
- a pipe with a vertical arrangement of the housing 1
- an air pump with the horizontal location of the housing 1
- the rotor 4 and rotor 5 are mounted rotatably in the cavity of the housing 1.
- the rotor 4 is kinematically connected to a motor (not shown in the drawings) by means of a shaft 6, for which, for example, an electric, hydraulic or pneumatic motor can be used.
- the rotor 5 using the shaft 7 is kinematically connected with the engine (not shown in the drawings) of any known design.
- the transmission of torque to the shaft 6 and shaft 7 can be carried out through an appropriate gearbox both from a common engine and from an individual engine.
- a grinding chamber 8 In the cavity of the housing 1 there is a grinding chamber 8, which has an annular shape.
- the blades 9 are fixed on the rotor 5 to disperse the crushed material and feed it into the grinding chamber 8.
- the blades 9 can have a streamlined shape, for example, a pterygoid or plate shape (not shown in the drawings) and are connected to the rotor 5 using a detachable or one-piece connection.
- the blades 10 are fixed on the rotor 4 to supply air to the grinding chamber 8.
- the blades 10 may have a streamlined shape, for example, a pterygoid or plate shape (not shown in the drawings) and connected to the rotor 4 using a detachable or one-piece connection.
- the blades 9 for accelerating and feeding the crushed material into the grinding chamber 8 are installed with a variable pitch (Ai, A 2 and Az), that is, the length of the arc defining the distance between the side surfaces of two successively arranged blades 9 for acceleration and feeding the crushed material into the grinding chamber 8, more or less than the length of the arc, which determines the distance between the side surfaces of an adjacent pair of two consecutive blades 9 for acceleration and hearth chi of the crushed material into the grinding chamber 8, that is, the following condition is satisfied Ai> A 2 > Az.
- the blades 10 for supplying air to the grinding chamber 8 are installed with a constant step (not shown in the drawings).
- a structural embodiment of the device for grinding the material of the blade 9 for acceleration and feeding the crushed material into the grinding chamber 8 is installed with a constant step (not shown in the drawings).
- the blades 10 for supplying air to the grinding chamber 8 are installed with a variable pitch (Bi, B 2 and Bz), that is, the length of the arc defining the distance between the side surfaces of two successively arranged blades 10 for supplying air to the grinding chamber 8, more or less the arc length defining the distance between the side surfaces of the adjacent pair of two successive blades 10 to supply air to the grinding chamber 8, i.e.
- the third embodiment of the device provides that the blades 9 for accelerating and feeding the crushed material into the grinding chamber 8 are installed with a variable pitch (Ai, A 2 and Az) and the blades 10 for supplying air to the grinding chamber 8 are installed with a variable pitch (B b 2 and B 3 ) (Fig. 2).
- a device for grinding material works as follows.
- the rotation drives of the shafts 6 and 7 are turned on, which transmit the torque to the corresponding rotor 4 and 5.
- the rotors 4 and 5 rotate in opposite directions.
- a previously prepared crushed material is fed into the cavity of the housing 1 using the device 2 for feeding the crushed material.
- the crushed material enters the cavity of the housing 1 and is captured by the rotating blades 9 to disperse the crushed material and feed it into the grinding chamber 8.
- the blades 9 to disperse the crushed material and supply it to the grinding chamber 8 simultaneously capture air, as a result of which a suspension stream is formed at their exit, consisting of a mixture of the crushed material with air. In this case, the particles of the crushed material are accelerated to the rotational speed of the rotor 6.
- the blades 10 for supplying air to the grinding chamber 8 are installed with a variable pitch, it is natural that the volume of air trapped by them will be different. So the blades 10 for supplying air to the grinding chamber 8 with a large pitch (Bi) will capture a larger volume of air when the rotor 4 rotates than the blades 10 that are installed with a smaller pitch (B 2 or Bz). From this it follows that in the air stream leaving the channel formed by the blades 10 for supplying air to the grinding chamber 8 with a large step, the air pressure will be greater and the speed will be lower than in the air stream leaving the adjacent channel formed by the blades 10 for air supply to the grinding chamber 8 with a smaller step.
- the finished product is removed from the cavity of the grinding chamber 8 using the device 3 for removing the finished product.
- the rotation drive is turned on and the rotors 4 and 5 begin to rotate.
- the rotational speed of the rotors 4 and 5 is maintained equal to 5000 rpm each.
- a pre-prepared crushed material having a particle size of 4-5 mm is metered into the cavity of the housing 1 using the device 2 for feeding the crushed material.
- the crushed material is captured by the blades 9.
- a stream of air enters the chamber 8, which is created by the blades 10 installed mi on a rotating rotor 4.
Landscapes
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Disintegrating Or Milling (AREA)
- Crushing And Pulverization Processes (AREA)
- Crushing And Grinding (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BRPI0922420A BRPI0922420A2 (pt) | 2008-12-25 | 2009-12-07 | método e máquina para trituração de material |
US13/142,196 US20120305683A1 (en) | 2008-12-25 | 2009-12-07 | Material Grinding Method and a Device for Carrying out Said Method |
CN2009801527550A CN102264476A (zh) | 2008-12-25 | 2009-12-07 | 材料磨碎方法和用于执行所述方法的设备 |
EP09835331A EP2390003A1 (en) | 2008-12-25 | 2009-12-07 | Material grinding method and a device for carrying out said method |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
RU2008151417/03A RU2385768C1 (ru) | 2008-12-25 | 2008-12-25 | Способ измельчения материала и устройство для его осуществления |
RU2008151417 | 2008-12-25 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2010074603A1 true WO2010074603A1 (ru) | 2010-07-01 |
Family
ID=42287983
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/RU2009/000671 WO2010074603A1 (ru) | 2008-12-25 | 2009-12-07 | Способ измельчения материала и устройство для его осуществления |
Country Status (6)
Country | Link |
---|---|
US (1) | US20120305683A1 (ru) |
EP (1) | EP2390003A1 (ru) |
CN (1) | CN102264476A (ru) |
BR (1) | BRPI0922420A2 (ru) |
RU (1) | RU2385768C1 (ru) |
WO (1) | WO2010074603A1 (ru) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105346050B (zh) * | 2015-10-15 | 2017-08-25 | 顺德职业技术学院 | 螺杆与多重垂直涡轮组合式混炼挤出装置 |
CN105728147B (zh) * | 2016-03-07 | 2018-05-08 | 钟文虎 | 对撞式气流粉碎机构及粉碎机 |
CN105627695B (zh) * | 2016-03-23 | 2018-04-13 | 四川大学 | 气旋喷嘴、振动流化床和振动流化床干燥系统 |
KR20170110993A (ko) * | 2016-03-24 | 2017-10-12 | 주식회사 엘지화학 | 실리카 에어로겔 제조시스템 |
JP6839307B2 (ja) * | 2018-02-01 | 2021-03-03 | 株式会社Isaac | ジェットミル装置 |
CN113289731B (zh) * | 2021-05-20 | 2023-07-18 | 博亿(深圳)工业科技有限公司 | 一种多种分散速度的研磨系统及方法 |
CN113289733B (zh) * | 2021-05-20 | 2023-08-15 | 博亿(深圳)工业科技有限公司 | 一种能输出多种分散速度的研磨分散装置及分散方法 |
CN113546724B (zh) * | 2021-07-27 | 2022-08-26 | 广东彩格科技有限公司 | 一种高性能涂料研磨装置及工艺 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1199108B (de) * | 1961-04-26 | 1965-08-19 | Wilhelm Eirich | Rippenscheibenmuehle |
SU1581378A1 (ru) * | 1988-07-19 | 1990-07-30 | Рубежанский филиал Днепропетровского химико-технологического института им.Ф.Э.Дзержинского | Ударно-вихрева мельница |
RU2108160C1 (ru) | 1996-10-30 | 1998-04-10 | Стандарт-90 (Кипрус) Лимитед К/О Иксл. | Способ измельчения материалов и устройство для измельчения материалов |
RU2193448C2 (ru) | 2000-12-27 | 2002-11-27 | Акционерное общество закрытого типа "АФРУС" | Способ аэродинамического измельчения материалов и устройство для аэродинамического измельчения |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3802260A1 (de) * | 1988-01-27 | 1989-08-10 | Kasa Technoplan | Rotierende desintegrationsvorrichtung |
US5597127A (en) * | 1995-08-04 | 1997-01-28 | Brown David K | Ultrafines coal pulverizer |
CN1305872A (zh) * | 2001-03-07 | 2001-08-01 | 王力民 | 旋转脉动超细微粒粉溶机 |
DE10246240B4 (de) * | 2002-10-02 | 2006-09-21 | Holger Hannemann | Desintegrator |
DE10248612A1 (de) * | 2002-10-17 | 2004-04-29 | Baron, Alfred, Dr.-Ing. | Verfahren zur Herstellung von anorganischen Bindemitteln |
CN100462566C (zh) * | 2007-11-29 | 2009-02-18 | 北京航空航天大学 | 叶片沿周向非均匀分布的大小叶片叶轮及压气机 |
-
2008
- 2008-12-25 RU RU2008151417/03A patent/RU2385768C1/ru not_active IP Right Cessation
-
2009
- 2009-12-07 WO PCT/RU2009/000671 patent/WO2010074603A1/ru active Application Filing
- 2009-12-07 BR BRPI0922420A patent/BRPI0922420A2/pt not_active IP Right Cessation
- 2009-12-07 CN CN2009801527550A patent/CN102264476A/zh active Pending
- 2009-12-07 US US13/142,196 patent/US20120305683A1/en not_active Abandoned
- 2009-12-07 EP EP09835331A patent/EP2390003A1/en not_active Withdrawn
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1199108B (de) * | 1961-04-26 | 1965-08-19 | Wilhelm Eirich | Rippenscheibenmuehle |
SU1581378A1 (ru) * | 1988-07-19 | 1990-07-30 | Рубежанский филиал Днепропетровского химико-технологического института им.Ф.Э.Дзержинского | Ударно-вихрева мельница |
RU2108160C1 (ru) | 1996-10-30 | 1998-04-10 | Стандарт-90 (Кипрус) Лимитед К/О Иксл. | Способ измельчения материалов и устройство для измельчения материалов |
RU2193448C2 (ru) | 2000-12-27 | 2002-11-27 | Акционерное общество закрытого типа "АФРУС" | Способ аэродинамического измельчения материалов и устройство для аэродинамического измельчения |
Also Published As
Publication number | Publication date |
---|---|
EP2390003A1 (en) | 2011-11-30 |
CN102264476A (zh) | 2011-11-30 |
US20120305683A1 (en) | 2012-12-06 |
BRPI0922420A2 (pt) | 2015-12-15 |
RU2385768C1 (ru) | 2010-04-10 |
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