EP1896184A2 - Verfahren und vorrichtung zur erzaufbereitung - Google Patents
Verfahren und vorrichtung zur erzaufbereitungInfo
- Publication number
- EP1896184A2 EP1896184A2 EP07711232A EP07711232A EP1896184A2 EP 1896184 A2 EP1896184 A2 EP 1896184A2 EP 07711232 A EP07711232 A EP 07711232A EP 07711232 A EP07711232 A EP 07711232A EP 1896184 A2 EP1896184 A2 EP 1896184A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- container
- mineral products
- ring elements
- product
- rotor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
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
- 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
Definitions
- the invention relates to a method and a device for comminuting natural or artificial mineral products.
- the object of the present invention is to provide a method and an apparatus for the production and crushing of natural artificial mineral products, in which the energy input can be substantially reduced.
- the mineral products which are pre-shredded from an upstream process, in a further working process continuously dry further comminuted and then wetted with liquid.
- This produced pumpable suspension then undergoes a process in which it is finely pre-ground. This stage is followed by a final stage, in the desired final fineness is obtained.
- This process takes place either on external agitator mills or on so-called gap mills with a gap of less than 1 mm.
- the process is intended primarily for industrial use, for throughputs of 1 to 60 tonnes per hour of solids.
- the dispersion is operated quasi stationary in combination with a circulation container.
- the agitator front-end mill arranged at the end of the comminution process is continuously supplied with products from the circulating container for the stationary dispersion.
- dry grinding is done either by mechanical impact mills, which accelerate the product and spin against a baffle or in which direct the coarse by high pressure in the form of an air or liquid jet against baffles or against oppositely directed product beams.
- the product at the end of the stationary comminution process, can be passed through an annular gap whose gap width is between 50 nm and 3 mm.
- the suspension of mineral products receives their final fineness or the fineness with which the final fineness is achieved in a subsequent process with low energy expenditure.
- the annular gap may also be a size of 500 nm to 2 mm.
- the device according to the invention for the treatment of mineral products at low energy consumption comprises a container which has a solids feed and a strength feed and an outlet. Over the length of the container between the solids inlet and the outlet 4 process chambers are distributed over the longitudinal axis of the container.
- the first process chamber alixvorzerklem réelles worn, which consists of a combination of grinding pins on the grinding container and grinding pins on a shaft. Also possible in the first process chamber, the arrangements of mechanical impact and roller mills and pneumatic impact mills and others for grinding in countercurrent. Depending on the energy available at the production site, the drive modes of the individual processing means are selected. According to a design of the device according to the invention, the first process space for pre-shredding is followed by a second process space for the wetting of the driers.
- tools are arranged in this second process space which radially accelerate the driers, thereby improving the wetting between the tools and the container wall, since the product comes in finely divided contact with the liquid and thus any powdered particles on its surface is provided with liquid.
- milling and mixing tools are provided in the third process chamber for increasing the homogeneity of the product consisting of dry substances and liquid, which are arranged both on the stirring shaft and on the container wall.
- the combination of rotating and stationary tools produces high centrifugal forces with high energy input.
- the device consists in this embodiment of ring elements, one of which is provided stationary and the other rotating.
- the two ring elements are made of wear-resistant material, such as ceramic, SiC, phenolic or epoxy resin, carbide, PU, rubber or elastomer or at least coated with these aforementioned materials.
- the ring elements are both detachable from the container and connected to the shaft.
- the distance between the two ring elements is 50 nm to 3 mm, preferably 500 nm to 2 mm.
- a rotor is located in the outlet area, on whose circumference wings are arranged.
- the wings also influence the residence time of the product between the ring elements, so that even with a relatively small gap width between the ring elements a sufficient flow rate is generated.
- the flow rate between the ring elements of the product can be adjusted or varied.
- the ring elements may be made of wear-resistant material, for certain products also offers a coating of the inner surface of the container in the process chambers 1, 2 and 3 for the purpose of longevity of the device or contamination of the product with abrasion from the grinding container.
- FIG. 1 shows a longitudinal section of a schematic representation of the device according to the invention with a discharge rotor
- FIG. 2 shows a longitudinal section of a schematic representation of the device according to the invention with a discharge rotor with additional milling device
- FIG. 3 Flow chart for the production process.
- FIG. 1 shows a device with a container 10.
- This container is divided into four process chambers 12, 16, 21, 22.
- the solids inlet 11 At the upper side of the first process chamber 12 is the solids inlet 11, which is inclined in the flow direction or to the shaft 14 .
- the comminuting device 13, which is arranged in the first process chamber 12, consists of grinding elements 15, for example grinding pins which are fastened to the shaft 14, and grinding elements 30 likewise have milling pins which are fastened to the inner wall of the container 10. Introduced in the direction of the arrow driers so get into the first process space and are pre-crushed between the grinding elements 15 and 30.
- the pre-shredded product passes into the second process chamber 16, in which radially acting tools 18, 19 are arranged.
- the two tools 18 and 19 accelerate the product, so that the predominantly tangentially introduced via the liquid inlet 17 liquids is introduced homogeneously into the rotating dry product. Due to the rotation of the dry product and the tangential introduction of the liquids, there are almost no differential speeds between Dry matter and liquid whereby the wetting process gets a higher efficiency.
- comminution elements in the form of grinding pins 15 are likewise arranged in the third process space 21 over a length extended with respect to the process space 12. Also between these grinding pins arise due to the rotating pins and the stationary pins differential speeds, which affect the product and lead to an increased energy input.
- the third process space is executed only shortened.
- FIG. 2 shows a fourth process chamber 22, in which not only a rotor 25 is placed with wings 29, but a further crushing device sits out of
- Ring elements 23, 24 consists. Since the arrangement of the ring elements 23, 24 is axially displaced, the mineral product flows or better through than
- Reibspalt / annular gap 27 designated gap between the ring members 23 and 24 therethrough.
- these two elements edit the meanwhile liquid mineral product either to final fineness or to fineness, as
- Task size for further treatment on agitator mills is desired.
- the ring elements 23, 24 as well as the tools 15, 30 and 19, 20 if necessary made of wear-resistant material such as ceramic, SiC, phenolic or epoxy resin, cemented carbide, PU, rubber or elastomer.
- wear-resistant material such as ceramic, SiC, phenolic or epoxy resin, cemented carbide, PU, rubber or elastomer.
- the same material configuration is also possible for the discharge rotor or the blades on the discharge rotor.
- FIG. 3 shows the flow chart of the product and the liquid substances during production with the grinding and dispersing devices 32 shown in FIG. 1 and FIG. 2.
- the quantity regulation FQC reaches the dry substances in amounts of from 1 to 60 tons per hour and up to a size of up to 30 mm to the first process room in which the dry pre-shredding takes place; here symbolically designed as roller mills.
- the supply lines for the liquid auxiliaries, solvents, stabilizers, binders, condenser (H 2 O) etc. then lead laterally into the area of the second process space. At the bottom left, the line leads from the fourth process space or the outlet for the treated suspension of solids and liquid in an intermediate container of 100 liters to 100 m 3 .
- the suspension can be fed again to the container 10 for a second comminution or dispersion process. If the dispersing operation and the pre-shredding are sufficient, the intermediate container 34 or directly the container 10 is followed by an agitator mill or agitator ball mill 36 in order to provide the product with the necessary final fineness.
Landscapes
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Crushing And Grinding (AREA)
- Crushing And Pulverization Processes (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102006012489A DE102006012489A1 (de) | 2006-03-16 | 2006-03-16 | Verfahren und Vorrichtung zur Erzaufbereitung |
PCT/DE2007/000475 WO2007104297A2 (de) | 2006-03-16 | 2007-03-15 | Verfahren und vorrichtung zur erzaufbereitung |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1896184A2 true EP1896184A2 (de) | 2008-03-12 |
Family
ID=38267535
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP07711232A Withdrawn EP1896184A2 (de) | 2006-03-16 | 2007-03-15 | Verfahren und vorrichtung zur erzaufbereitung |
Country Status (6)
Country | Link |
---|---|
US (1) | US8079535B2 (de) |
EP (1) | EP1896184A2 (de) |
CN (1) | CN101400447B (de) |
BR (1) | BRPI0709754A2 (de) |
DE (2) | DE102006012489A1 (de) |
WO (1) | WO2007104297A2 (de) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2676725B1 (de) | 2012-06-18 | 2016-03-02 | Bühler AG | Vorrichtung und Verfahren zum Mischen, insbesondere zum Dispergieren |
CN105592927B (zh) | 2013-05-21 | 2018-04-27 | Fl史密斯公司 | 用于持续监测研磨回路中的磨损的方法和装置 |
DE102013111564B3 (de) * | 2013-10-21 | 2015-02-12 | Netzsch-Feinmahltechnik Gmbh | Vorrichtung und verfahren zum starten einer rührwerkskugelmühle |
US9521929B1 (en) * | 2013-11-19 | 2016-12-20 | Vermont Herb & Spice Accessories, Inc. | Self cleaning tribological coated tobacco and herb grinders |
CN107927878B (zh) * | 2017-12-28 | 2020-12-22 | 湖南九鼎农牧有限公司 | 一种饲料筛选破碎预搅拌处理装置 |
CN109604607B (zh) * | 2018-12-19 | 2020-12-29 | 技锋精密刀具(马鞍山)有限公司 | 一种有效提高硬质合金圆刀毛坯合格率的生产工艺 |
CN111575568A (zh) * | 2020-05-15 | 2020-08-25 | 徐州华焰特种陶瓷有限公司 | 一种耐磨陶瓷辊及其制备方法 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1507652A1 (de) * | 1966-06-07 | 1969-07-24 | Spangenberg Maschf G | Mahl- und Dispergiermuehle |
DE2205646C3 (de) * | 1972-02-07 | 1979-08-30 | Gustav Spangenberg Maschinenfabrik Gmbh, 6800 Mannheim | Rührwerksmühle mit Kühlvorrichtung |
US4325514A (en) * | 1975-12-05 | 1982-04-20 | English Clays Lovering Pochin & Company Limited | Comminution of minerals |
JPH0683795B2 (ja) * | 1986-03-18 | 1994-10-26 | ホソカワミクロン株式会社 | ボ−ルミル |
CN2139024Y (zh) * | 1992-10-27 | 1993-07-28 | 杨志生 | 外循环冷却式高强力砂磨机 |
DE19504868A1 (de) * | 1995-02-14 | 1996-08-22 | Krupp Polysius Ag | Verfahren und Vorrichtung zur Zerkleinerung von feuchtem mineralischem Gut |
EP1423185B1 (de) * | 2001-08-17 | 2005-01-19 | Netzsch-Feinmahltechnik GmbH | Vorrichtung und verfahren zum vermischen eines feststoffs mit einer flüssigkeit |
US7249723B2 (en) * | 2004-07-14 | 2007-07-31 | Ngx, Inc. | Organic solvent dispersed nano-talc slurry |
-
2006
- 2006-03-16 DE DE102006012489A patent/DE102006012489A1/de not_active Withdrawn
-
2007
- 2007-03-15 BR BRPI0709754-9A patent/BRPI0709754A2/pt not_active IP Right Cessation
- 2007-03-15 DE DE112007001252T patent/DE112007001252A5/de not_active Withdrawn
- 2007-03-15 WO PCT/DE2007/000475 patent/WO2007104297A2/de active Application Filing
- 2007-03-15 CN CN2007800089795A patent/CN101400447B/zh not_active Expired - Fee Related
- 2007-03-15 EP EP07711232A patent/EP1896184A2/de not_active Withdrawn
-
2008
- 2008-09-16 US US12/211,386 patent/US8079535B2/en active Active
Non-Patent Citations (1)
Title |
---|
See references of WO2007104297A3 * |
Also Published As
Publication number | Publication date |
---|---|
US8079535B2 (en) | 2011-12-20 |
CN101400447B (zh) | 2011-09-14 |
WO2007104297A2 (de) | 2007-09-20 |
BRPI0709754A2 (pt) | 2011-07-26 |
CN101400447A (zh) | 2009-04-01 |
WO2007104297A3 (de) | 2008-01-17 |
DE102006012489A1 (de) | 2007-09-20 |
DE112007001252A5 (de) | 2009-02-19 |
US20090072057A1 (en) | 2009-03-19 |
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Legal Events
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RAX | Requested extension states of the european patent have changed |
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DAX | Request for extension of the european patent (deleted) | ||
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN |
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18W | Application withdrawn |
Effective date: 20131210 |