WO2022177525A1 - Spiral geometry grinding mill - Google Patents
Spiral geometry grinding mill Download PDFInfo
- Publication number
- WO2022177525A1 WO2022177525A1 PCT/TR2021/051460 TR2021051460W WO2022177525A1 WO 2022177525 A1 WO2022177525 A1 WO 2022177525A1 TR 2021051460 W TR2021051460 W TR 2021051460W WO 2022177525 A1 WO2022177525 A1 WO 2022177525A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- mill
- grinding
- spiral
- grinding media
- mill body
- Prior art date
Links
- 238000000227 grinding Methods 0.000 title claims abstract description 75
- 239000000463 material Substances 0.000 claims abstract description 25
- 238000000034 method Methods 0.000 claims abstract description 14
- 230000008569 process Effects 0.000 claims abstract description 8
- 239000004568 cement Substances 0.000 claims abstract description 5
- 239000002184 metal Substances 0.000 claims abstract description 5
- 229910052500 inorganic mineral Inorganic materials 0.000 claims abstract description 4
- 239000011707 mineral Substances 0.000 claims abstract description 4
- -1 mine Substances 0.000 claims abstract 2
- 230000033001 locomotion Effects 0.000 claims description 25
- 238000005265 energy consumption Methods 0.000 claims description 4
- 230000008859 change Effects 0.000 claims description 2
- 238000006073 displacement reaction Methods 0.000 abstract 1
- 229910000831 Steel Inorganic materials 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000010423 industrial mineral Substances 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 239000000919 ceramic Substances 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 238000003801 milling Methods 0.000 description 2
- 230000002829 reductive effect Effects 0.000 description 2
- 239000005060 rubber Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000001238 wet grinding Methods 0.000 description 2
- 229920000297 Rayon Polymers 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 230000001010 compromised effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000009837 dry grinding Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000003252 repetitive effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 102200004779 rs2232775 Human genes 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/02—Frames; Beds; Carriages
-
- 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
- B02C17/10—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 with one or a few disintegrating members arranged in the container
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B31/00—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor
- B24B31/02—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor involving rotary barrels
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
Definitions
- the invention relates to balls and rod mills used for grinding industrial mine and minerals, mainly cement and metal ores.
- the invention particularly relates to spiral geometry ball or bar grinding mill with reduced energy consumption by bringing mill structure from circular form to spiral form and thus making consumed energy more efficient.
- Ball and rod mills are used for grinding industrial mine and minerals, mainly cement and metal ores.
- Ball and rod mills have wet, dry, autogenous, semi-autogenous, continuous feeding or fill, gear driven, neck driven or direct on-body engine winding adapted grinding methods.
- Inner parts of them have steel, rubber or ceramic lining.
- Said ball mills are rotating tubes of cylinder shape comprising steel or ceramic balls therein.
- balls apply pressure onto inner wall rotating under effect of centrifugal force.
- Balls rotate together with mill wall and travel up inside mill by help of friction force created by the pressure.
- Weight of balls defeats centrifugal force effect at a certain point inside wall and balls fall inside mill.
- mill rotate at a certain RPM balls go up and fall down continuously. Since all of balls do not touch wall, many balls move within the pile of other balls contacting wall. The motion created by such pile of balls is called cascade. Material fed into mill for grinding is crushed inside the cascade, is subject to friction, pressure and in the end is chipped and ground.
- central weight of the cascade is at a certain distance from mill rotation axis and applies a tangential force onto rotation axis.
- the moment created by such force at a certain RPM determines power of mill and power consumption in a certain period of running.
- Components such as diameter of mill, number of balls therein, RPM, lining structure specify place of cascade and the moment applied by cascade onto mill.
- Type of the cascade movement determines nature of grinding work in the mill, mill performance.
- ball mills can be of continued type wherein material is continuously fed and ground material is continuously are given from the mill or batch type wherein discharged after completion of grinding.
- Said rod mills are the mills where steel bar form are used as grinding material instead of ball.
- Autogenous mills are the systems where only material grinds material inside the mill without grinding ball or rod. Semi-autogenous is the system where few amount of ball and remaining material perform grinding.
- dry and wet terms are used for ball mills.
- water is added with the material.
- Material is grinded in a full sludge medium with water and material in the mill.
- Wet grinding is conducted generally for metal ores.
- Cement and industrial minerals are also grinded in general by dry grinding.
- Rod mills are used with wet grinding.
- Lifter bars are also placed in some parts of such coating to help raise of material. The lifter bars also help delay in wearing of coating where ball and material remain on coating for longer time periods.
- the present invention particularly relates to a method for process of a viscose mass comprising solid components, being a fatty mass having solid components in a grinding system, and said system comprises a mixer and a grinding instrument and said method comprises following process steps: Feeding mass to be processed into a mixer; rotation of mass to be processed in a repetitive manner to a grinding instrument by a supply pipe from mixer for reducing size of said solid components in said grinding instrument and to mixer again by a return pipe by a replacement instrument; and additionally comprises following step: removal of at least a part of processed mass from the system by means of a branch duct provided on return line when predetermined grinding fineness is achieved; and supply of new mass to be processed into mixer and at least partial replacement of new mass to be processed at said grinding instrument by means of said replacement instrument and finally removal of at least other
- the invention relates to ball mills developed to solve said disadvantages and provide some additional advantages.
- Purpose of the invention is to provide motion of balls in distant from centre at spiral tail and motion of spiral near centre in inner diameters during rotation by help of spiral structure of the mill. Therefore, moment to raise ball of same weight decreases and energy needed is also reduced.
- Another purpose of the invention is to provide approach of material raised to drum wall to rotation axis in some times of full rotation stage or alignment with rotation axis in vertical direction during rotation motion by help of spiral form of mills bodies instead of being in full circle.
- Another purpose of the invention is to increase energy efficiencies of ball mills and reduce negative impacts caused onto economy and environment by energy consumption.
- a further purpose of the invention is to provide entire movement of cascade and thus bringing grinding stage near rotation centre by help of pressure. Thus, mill moment need is decreased.
- Another purpose of the invention is to enable operation at lower speeds by help of spiral body and thus provide energy saving.
- a further purpose of the invention is to enable operation of mill body not only in spiral form but other than circular form in different designs such as eclipse, cycloid etc. With such designs, the cascade is not stacked in certain place and will move inside mill.
- Figure - 1 shows front perspective view of spiral structure grinding mill.
- Figure - 2 shows rear perspective view of spiral structure grinding mill.
- Figure - 3 shows schematic view of movements of grinding media located inside during rotation of grinding mill of the invention.
- Figure - 4 shows schematic view of two spiral structures placed next to one another inside the mill.
- Figure - 5 shows illustrative views of different spiral forms of inner volume of grinding mill of the invention.
- Said invention relates to spiral geometry instead of circular structure of mill bodies (11) in grinding mill embodiments (10) as shown in figures 1 and 2.
- material and grinding media (111) raised at drum wall nearer to rotation axis during some times of one full rotation cycle or provide alignment thereof with rotation axis in vertical direction.
- the invention can also be applied in full ball and rod mills applied in wet, dry, autogenous, semi-autogenous, continued feed or batch methods.
- Said grinding mill embodiment (10) is as shown in Figures 1 and 2. It comprises driving members (12) installed onto a certain ground and spiral geometry mill body (11) connected thereto in horizontal position.
- grinding mill embodiments (10) 3 processes are seen in material grinding operation. They are crushing, wearing and grinding by pressure. When mill starts rotating around its axis, grinding media (111) go up and after reaching a certain height, fall downward and provides crushing of material on the ground. While said balls move from down to up inside the mill, they are worn and ground due to frictions rolled over inner surface of mill. Finally, during cascade motion, materials on mid-part of grinding media (111) pile are subjected to pressure by grinding media (111) provided therein and thus grinding is provided.
- Spiral geometry mill body (11) of the invention is a structure designed other than circular form.
- grinding media (111) are not collected on one side of mill body (11) during rotation movement but change place in a manner to get closer to centre continuously. This motion is shown in figure 3.
- FIGS 1 and 2 show perspective views of grinding mill embodiment (10). Material to be ground is fed into spiral geometry mill body (11). Then machine is run. When it starts running, mill body (11) starts to rotate around its axis with the driving provided by driving members (12). With this motion grinding media (111) therein start to move inside mill and cascade motion is started.
- Spiral structure (112) of mill of the invention prevents stacking of grinding media (111) on one single side during rotation and thus provides movement of all grinding media (111) close to centre during one quarter motion.
- driving members (12) consume less energy to rotate mill.
- outer part can be circular and inner part can have a separate spiral structure (112).
- designing in various geometries not circular such as eclipse, cycloid etc. can provide energy saving.
- spirals can be used without interlocking as well as interlocked. And in this way several spiral based mill bodies can be designed.
- Figure 5 can be examined as example to such designs. Raising and pouring motions of grinding media (111) of all designs may vary. Also rotated identical of the spiral bodies can be added onto one another. Thus, weight centres are provided on rotation centre too.
- Spiral geometry mill body (11) of the invention can be sized in line with process needs and material input and output structures may vary.
- Ball or rod mills as said grinding mill embodiment (10) are converted into the spiral structure and thus above mentioned purposes are achieved.
Landscapes
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Mechanical Engineering (AREA)
- Crushing And Grinding (AREA)
Abstract
Invention relates to mill body (11) designed in a geometry other than circular form and opposite diameters are not equal thus providing consumption of less energy by means of displacement of positions of grinding media (111) and raising and getting closer to centre and then falling onto ground to perform grinding process in grinding mill embodiments (10) where materials such as cement, metal, mine, mineral etc. are grinded.
Description
SPIRAL GEOMETRY GRINDING MILL
Technical Field
The invention relates to balls and rod mills used for grinding industrial mine and minerals, mainly cement and metal ores.
The invention particularly relates to spiral geometry ball or bar grinding mill with reduced energy consumption by bringing mill structure from circular form to spiral form and thus making consumed energy more efficient.
State of Art
Today balls and rod mills are used for grinding industrial mine and minerals, mainly cement and metal ores. Ball and rod mills have wet, dry, autogenous, semi-autogenous, continuous feeding or fill, gear driven, neck driven or direct on-body engine winding adapted grinding methods. Inner parts of them have steel, rubber or ceramic lining.
Said ball mills are rotating tubes of cylinder shape comprising steel or ceramic balls therein. During rotation of mill, balls apply pressure onto inner wall rotating under effect of centrifugal force. Balls rotate together with mill wall and travel up inside mill by help of friction force created by the pressure. Weight of balls defeats centrifugal force effect at a certain point inside wall and balls fall inside mill. In other words, while mill rotate at a certain RPM, balls go up and fall down continuously. Since all of balls do not touch wall, many balls move within the pile of other balls contacting wall. The motion created by such pile of balls is called cascade. Material fed into mill for grinding is crushed inside the cascade, is subject to friction, pressure and in the end is chipped and ground. During rotation central weight of the cascade is at a certain distance from mill rotation axis and applies a tangential force onto rotation axis. The moment created by such force at a certain RPM determines power of mill and power consumption in a certain period of running. Components such as diameter of mill, number of balls therein, RPM, lining structure specify place of cascade and the moment applied by cascade onto mill. Type of the cascade movement determines nature of grinding work in the mill, mill performance.
Also said ball mills can be of continued type wherein material is continuously fed and ground material is continuously are given from the mill or batch type wherein discharged after completion of grinding.
Said rod mills are the mills where steel bar form are used as grinding material instead of ball. Autogenous mills are the systems where only material grinds material inside the mill without grinding ball or rod. Semi-autogenous is the system where few amount of ball and remaining material perform grinding.
In addition, dry and wet terms are used for ball mills. For wet mills water is added with the material. Material is grinded in a full sludge medium with water and material in the mill. Wet grinding is conducted generally for metal ores. Cement and industrial minerals are also grinded in general by dry grinding. Rod mills are used with wet grinding.
Inside of ball mills is coated with steel, rubber or ceramic material durable against wearing in order to prevent drum wall wearing. Lifter bars are also placed in some parts of such coating to help raise of material. The lifter bars also help delay in wearing of coating where ball and material remain on coating for longer time periods.
In the prior art, power consumption of ball mills is high while their efficiencies are low. According to research conducted, power efficiency of ball mills is about 6 %. In other words, 6 % of supplied electric energy is consumed on grinding. The remaining is lost as heat, sound, mechanic efficiency, bearing frictions etc.
In the related art there are also other grinding machines with high energy efficiency alternative to ball mills. For instance, efficiency in vertical roller mills is about 8 % and in horror mills it is about 12 %. Although these machines have high energy efficiencies, initial investment, maintenance and other operating costs are high.
In the related art ball mills conduct crushing with balls falling from height at high speed inside cascade, wearing with those rolling and pressure force with slow motion at mid-points of cascade. In this context, grinding is conducted by mid part pressure force caused by too slow motion inside cascade. Since this part moves too slow and even hardly move, and thus creates weight at a point far from centre inside the mill, it creates moment continuously and consumes energy. In other words, it creates moment in respect to rotation movement of mill even although there is no movement. For that reason, it causes consumption of too much energy.
Several embodiments related to said ball mills are found in the prior art. One of them is European patent numbered TR2014/11178 and entitled “Stirring ball mill”. Classification class of B02C 17/16 in its abstracts reads as: “Mill comprises a milling container, a mixing spindle organized parallel to axis longitudinally in the container. A pre-crushing device connected to next part from product input provides a separation device, in other words, a sieve a grinding part protecting auxiliary grinding organs. The end of grinding aperture facing grinding part runs on static or dynamic opening protective side connected to rotating part or pre-crushing device fixed
part." This application uses spindle inside mill for grinding operation. This operation causes much energy consumption.
Another example related to said embodiment is a European patent entitled “A method for operating a ball mill and a milling system” and numbered 2018/03399. Classification class A23G 1/00, the invention in abstracts reads as “The present invention particularly relates to a method for process of a viscose mass comprising solid components, being a fatty mass having solid components in a grinding system, and said system comprises a mixer and a grinding instrument and said method comprises following process steps: Feeding mass to be processed into a mixer; rotation of mass to be processed in a repetitive manner to a grinding instrument by a supply pipe from mixer for reducing size of said solid components in said grinding instrument and to mixer again by a return pipe by a replacement instrument; and additionally comprises following step: removal of at least a part of processed mass from the system by means of a branch duct provided on return line when predetermined grinding fineness is achieved; and supply of new mass to be processed into mixer and at least partial replacement of new mass to be processed at said grinding instrument by means of said replacement instrument and finally removal of at least other part of said processed mass from said system.” Said application provides improvement about material supply to and taking back from mill. There is no development about cascade movement.
While searching patents regarding matter, the file numbered US1671283A was encountered. This application is developed to break cascade motion and provide energy gaining. However, cascade is broken in action in the mill and some of balls reach over the peak point between mill body and inner wall and pours down from other (left) side and gives back some of moment it takes. Therefore, continuous moment is needed.
In said mill, balls move along peripheral and central projections of weight centre of balls falls onto centre and adequate energy saving cannot be achieved.
Also in said mill, pressure and friction environments of balls is compromised for sake of energy saving. It is pressure and friction that perform primary grinding work in standard ball mills. With falling rather hit conducts crushing (pre-grinding) works. For that reason, mill grinding performance in said application is seen as too low mill. This performance is also likely to be achieved by crushers conducting fine crushing.
Therefore, this and other applications can be shown as examples for above mentioned disadvantages.
In conclusion, developments have been made in ball mills in parallel to technology and, therefore, new embodiments eliminating the above disadvantages and offering solutions to existing systems are needed.
Purpose of the Invention
Differently from the embodiments used in the present related art the invention relates to ball mills developed to solve said disadvantages and provide some additional advantages.
Purpose of the invention is to provide motion of balls in distant from centre at spiral tail and motion of spiral near centre in inner diameters during rotation by help of spiral structure of the mill. Therefore, moment to raise ball of same weight decreases and energy needed is also reduced.
Another purpose of the invention is to provide approach of material raised to drum wall to rotation axis in some times of full rotation stage or alignment with rotation axis in vertical direction during rotation motion by help of spiral form of mills bodies instead of being in full circle.
Another purpose of the invention is to increase energy efficiencies of ball mills and reduce negative impacts caused onto economy and environment by energy consumption.
A further purpose of the invention is to provide entire movement of cascade and thus bringing grinding stage near rotation centre by help of pressure. Thus, mill moment need is decreased.
Another purpose of the invention is to enable operation at lower speeds by help of spiral body and thus provide energy saving.
A further purpose of the invention is to enable operation of mill body not only in spiral form but other than circular form in different designs such as eclipse, cycloid etc. With such designs, the cascade is not stacked in certain place and will move inside mill.
The structural and characteristic features and all advantages of the invention will be understood better in the figures given below and the detailed description by reference to the figures. Therefore, the assessment should be made based on the figures and taking into account the detailed descriptions.
Brief Description of Figures
Figure - 1 shows front perspective view of spiral structure grinding mill.
Figure - 2 shows rear perspective view of spiral structure grinding mill.
Figure - 3 shows schematic view of movements of grinding media located inside during rotation of grinding mill of the invention.
Figure - 4 shows schematic view of two spiral structures placed next to one another inside the mill.
Figure - 5 shows illustrative views of different spiral forms of inner volume of grinding mill of the invention.
Reference Numbers
10. Grinding mill embodiment
11. Mill body
111. Grinding media
112. Spiral structure
12. Mill driving members
Detailed Description of an Illustrative Sample
In this detailed description, the preferred embodiments (10) of the grinding mill being subject of the invention have been described in a manner not forming any restrictive effect and only for purpose of better understanding of the matter.
Said invention relates to spiral geometry instead of circular structure of mill bodies (11) in grinding mill embodiments (10) as shown in figures 1 and 2. Thus during rotation movement it is provided to make material and grinding media (111) raised at drum wall nearer to rotation axis during some times of one full rotation cycle or provide alignment thereof with rotation axis in vertical direction. The invention can also be applied in full ball and rod mills applied in wet, dry, autogenous, semi-autogenous, continued feed or batch methods.
Said grinding mill embodiment (10) is as shown in Figures 1 and 2. It comprises driving members (12) installed onto a certain ground and spiral geometry mill body (11) connected thereto in horizontal position.
With grinding mill embodiments (10) 3 processes are seen in material grinding operation. They are crushing, wearing and grinding by pressure. When mill starts rotating around its axis, grinding media (111) go up and after reaching a certain height, fall downward and provides crushing of material on the ground. While said balls move from down to up inside the mill, they
are worn and ground due to frictions rolled over inner surface of mill. Finally, during cascade motion, materials on mid-part of grinding media (111) pile are subjected to pressure by grinding media (111) provided therein and thus grinding is provided.
Spiral geometry mill body (11) of the invention is a structure designed other than circular form. By this structure, grinding media (111) are not collected on one side of mill body (11) during rotation movement but change place in a manner to get closer to centre continuously. This motion is shown in figure 3.
Operating principle;
Figures 1 and 2 show perspective views of grinding mill embodiment (10). Material to be ground is fed into spiral geometry mill body (11). Then machine is run. When it starts running, mill body (11) starts to rotate around its axis with the driving provided by driving members (12). With this motion grinding media (111) therein start to move inside mill and cascade motion is started.
Motion steps of mill body (11) are shown in figure 3. Since diameters of spiral body mill body
(I I) are not equal, shape of grinding media (111) (cascade) changes during rotation. When motion starts, grinding media (111) are in the bottom part of the mill. Upon rotation of mill in arrow direction, grinding media (111) resting onto inner wall move upward. While grinding media
(I I I) move up, diameter of spiral body gets smaller and so it comes to centre immediately before starting to go down. Upon rotating a quarter tour in center within its body, grinding media (111) remaining motionless perform grinding operation with pressure. Flowever, since this time of remaining motionless is at a point rear centre, too little moment is needed.
Spiral structure (112) of mill of the invention prevents stacking of grinding media (111) on one single side during rotation and thus provides movement of all grinding media (111) close to centre during one quarter motion. Thus, driving members (12) consume less energy to rotate mill.
Alternative Embodiments:
Instead of entire of mill body (11) in spiral structure (112), outer part can be circular and inner part can have a separate spiral structure (112). In addition, instead of spiral geometry, designing in various geometries not circular such as eclipse, cycloid etc. can provide energy saving.
As stated, instead of single spiral in circular form as stated hereunder, placement of two or more spiral structures (112) facing one another can achieve the same purposes. As shown for circular form in figure 4, the spirals can be used without interlocking as well as interlocked. And in this way several spiral based mill bodies can be designed. Figure 5 can be examined as example to such designs. Raising and pouring motions of grinding media (111) of all designs may vary.
Also rotated identical of the spiral bodies can be added onto one another. Thus, weight centres are provided on rotation centre too.
Invention in general;
All of stages of crushing by falling, grinding by friction and grinding by pressure as material grinding steps are performed. While performing such processes, cascade gets closer to centre at each quarter rotation and therefore system consumes less energy. Friction at 1st quarter, pressure at 2nd and 3rd quarter and falling and crushing at last quarter provides grinding of the material.
Above mentioned components are calculated and designed separately for each process in line with mill grinding capacity and process needs. Spiral geometry mill body (11) of the invention can be sized in line with process needs and material input and output structures may vary.
Ball or rod mills as said grinding mill embodiment (10) are converted into the spiral structure and thus above mentioned purposes are achieved.
Claims
1. Mill body (11) wherein materials such as cement, metal, mine, mineral etc. are placed with grinding media (111) providing grinding process in mill embodiments (10) where said materials are grinded, characterized in that
• The mill body (11) is in a geometry where opposite diameters are not equal and other than circular form, wherein position of grinding media (111) located in inner part change during each quarter rotation of the mill body (11) and raises and gets closer to centre and then falls onto ground and thus less energy consumption is provided.
2. The mill body (11) according to claim 1 , characterized in that grinding media (111), located inside during rotation, are in spiral structure (112) that providing motion of grinding media (111 ) in a manner close to centre and as a whole.
3. The mill body (11) according to claim 1 , characterized in that the mill body (11) is not in a circular structure such as spiral, eclipse, cycloid etc. wherein grinding media (111) can move inside the mill collectively.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP21926970.1A EP4291334A4 (en) | 2021-02-19 | 2021-12-22 | Spiral geometry grinding mill |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TR2021/002379 TR2021002379A2 (en) | 2021-02-19 | SPIRAL GEOMETRIC GRINDING MILL | |
TR2021/002379A TR202102379A2 (en) | 2021-02-19 | 2021-02-19 | SPIRAL GEOMETRIC GRINDING MILL |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2022177525A1 true WO2022177525A1 (en) | 2022-08-25 |
Family
ID=77614941
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/TR2021/051460 WO2022177525A1 (en) | 2021-02-19 | 2021-12-22 | Spiral geometry grinding mill |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP4291334A4 (en) |
TR (1) | TR202102379A2 (en) |
WO (1) | WO2022177525A1 (en) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2189221A2 (en) * | 2008-11-22 | 2010-05-26 | Netzsch-Feinmahltechnik GmbH | Stirring ball mill |
CN104437762A (en) * | 2013-09-17 | 2015-03-25 | 中冶长天国际工程有限责任公司 | Ultra-fine ball mill |
EP3094187A1 (en) * | 2014-01-15 | 2016-11-23 | Caotech Beheer B.V. | A method for operating a ball mill and a milling system |
CN109107696A (en) * | 2018-10-15 | 2019-01-01 | 江西理工大学 | A kind of Symmetric Composite formula spiral shape ore grinding cylinder and its design method |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2931584A (en) * | 1956-04-09 | 1960-04-05 | Donald H Fairchild | Ball mill |
RU2716089C1 (en) * | 2019-05-06 | 2020-03-05 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Кубанский государственный аграрный университет имени И.Т. Трубилина" | Device for grinding of loose materials |
-
2021
- 2021-02-19 TR TR2021/002379A patent/TR202102379A2/en unknown
- 2021-12-22 WO PCT/TR2021/051460 patent/WO2022177525A1/en active Application Filing
- 2021-12-22 EP EP21926970.1A patent/EP4291334A4/en active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2189221A2 (en) * | 2008-11-22 | 2010-05-26 | Netzsch-Feinmahltechnik GmbH | Stirring ball mill |
CN104437762A (en) * | 2013-09-17 | 2015-03-25 | 中冶长天国际工程有限责任公司 | Ultra-fine ball mill |
EP3094187A1 (en) * | 2014-01-15 | 2016-11-23 | Caotech Beheer B.V. | A method for operating a ball mill and a milling system |
CN109107696A (en) * | 2018-10-15 | 2019-01-01 | 江西理工大学 | A kind of Symmetric Composite formula spiral shape ore grinding cylinder and its design method |
Non-Patent Citations (1)
Title |
---|
See also references of EP4291334A4 * |
Also Published As
Publication number | Publication date |
---|---|
TR202102379A2 (en) | 2021-06-21 |
EP4291334A4 (en) | 2024-05-29 |
EP4291334A1 (en) | 2023-12-20 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP2999540B1 (en) | A grinding apparatus | |
CN102284322B (en) | Vertical roller mill | |
US11396022B2 (en) | Mono roller grinding mill | |
CN105562154A (en) | Small horizontal type material crushing device | |
CN206008872U (en) | A kind of rotary shaft ball mill | |
CN2930855Y (en) | High thin chamotte crushing mill | |
CN206597577U (en) | A kind of disc type sawdust reducing mechanism | |
CN201558729U (en) | Double-layer grinder | |
CN212732380U (en) | Vertical superfine powder roller mill with material conveying channel | |
EP4291334A1 (en) | Spiral geometry grinding mill | |
CN210357395U (en) | Ore ball mill with screening function | |
CN101249465A (en) | Centrifugal grinder | |
CN100438983C (en) | Vertical mill | |
CN206577885U (en) | A kind of disintegrating machine | |
JP2001000877A (en) | Glass pulverizer | |
TR2021002379A2 (en) | SPIRAL GEOMETRIC GRINDING MILL | |
CN205687039U (en) | Conveying worm with crushing function | |
CN215586643U (en) | Rubbing crusher convenient to change tup and ring gear | |
CN205517973U (en) | Miniaturized horizontal material breaker | |
CN216261247U (en) | Dry-method ore dressing system | |
CN219596846U (en) | Vertical centrifugal crusher | |
CN215029544U (en) | Ball-milling device of pollution-free high efficiency grinding medium | |
CN202366760U (en) | Triple-rotor impact crusher | |
CN2611034Y (en) | Novel and super micro-particle water milling apparatus | |
CN211385251U (en) | Ball mill of ceramic tile production usefulness |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 21926970 Country of ref document: EP Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2021926970 Country of ref document: EP |
|
ENP | Entry into the national phase |
Ref document number: 2021926970 Country of ref document: EP Effective date: 20230912 |
|
NENP | Non-entry into the national phase |
Ref country code: DE |