EP1888243A2 - Verfahren und vorrichtung zur herstellung disperser mineralischer produkte - Google Patents
Verfahren und vorrichtung zur herstellung disperser mineralischer produkteInfo
- Publication number
- EP1888243A2 EP1888243A2 EP06755254A EP06755254A EP1888243A2 EP 1888243 A2 EP1888243 A2 EP 1888243A2 EP 06755254 A EP06755254 A EP 06755254A EP 06755254 A EP06755254 A EP 06755254A EP 1888243 A2 EP1888243 A2 EP 1888243A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- classifier
- particles
- mineral
- flow
- separation chamber
- 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.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C7/00—Separating solids from solids by electrostatic effect
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
- B02C23/08—Separating or sorting of material, associated with crushing or disintegrating
- B02C23/10—Separating or sorting of material, associated with crushing or disintegrating with separator arranged in discharge path of crushing or disintegrating zone
- B02C23/12—Separating or sorting of material, associated with crushing or disintegrating with separator arranged in discharge path of crushing or disintegrating zone with return of oversize material to crushing or disintegrating zone
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
- B02C23/08—Separating or sorting of material, associated with crushing or disintegrating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
- B03C3/02—Plant or installations having external electricity supply
- B03C3/04—Plant or installations having external electricity supply dry type
- B03C3/14—Plant or installations having external electricity supply dry type characterised by the additional use of mechanical effects, e.g. gravity
- B03C3/15—Centrifugal forces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C7/00—Separating solids from solids by electrostatic effect
- B03C7/006—Charging without electricity supply, e.g. by tribo-electricity, pyroelectricity
Definitions
- the invention relates to a method and apparatus for producing disperse mineral products, comprising a mill, a flow classifier and a system for separating the dispersion air.
- the comminuted mineral raw material is enriched and purified in an aqueous suspension by flotation, by magnetic separation or by density sorting. After cleaning, the mineral filler is finely ground in aqueous suspension and sold as a suspension, so-called "slurry.” Dry-powder could also be made from a wet-processed mineral substance, but the substance would have to be dehydrated and thermally dried, but this is very energy intensive and expensive.
- treatment processes are generally used in which the mineral raw material is comminuted and classified by dry grinding and sifting.
- flow classifiers are used to classify mineral products.
- the particles produced in the milling must be dispersed in air and separated to obtain an efficient classification in the flow classifier.
- the products produced by the flow classifier are separated from the air in downstream dedusting plants.
- a complete particle dissection and dedusting system is installed in plants for grinding and classifying mineral substances.
- the raw material can not be cleaned or only very inefficient. Therefore, for the production of high-quality disperse mineral products, especially fillers, only very pure and high-quality raw materials used raw ⁇ who, however, are available only to a limited extent.
- the invention is therefore based on the object to provide a method and an apparatus according to the preamble of claim 1, in which the minerali cal raw material is efficiently cleaned from the foreign particles, so that for the production of high-quality disperse mineral products, in particular fillers, also less pure starting raw materials can be used.
- plastic waste is electro-static separated.
- a mixture of plastic particles in air is charged electrostatically in a rotating drum and passed through sieve holes at the circumference of the drum into a chute in which positive / negative electrodes are provided on both sides of the drop path for the electrostatic separation of the particles according to their different charge are.
- the charging of the particles takes advantage of the triboelectric charging resulting from the intensive friction of the solid particles on one another and on the parts of the classifier, in particular the rotor and stator parts of a centrifugal force separator.
- chen-dispersion for the electrostatic separation of the impurities from the value particles is passed through an electrostatic separation chamber, which is switched between ⁇ rule Strömungsklassierer and Heilabscheidesystem in the process.
- connecting pipe between the flow classifier and the electrostatic separation chamber can consist of or be lined with electrically conductive material and the electrically conductive parts can be connected to a pole of a DC voltage source (claim 4).
- the electrostatic separation chamber may be inserted into the fine material flow or in the coarse material flow of the flow. Apart from the subsequent electrostatic sorting, the electrostatic charge is also already advantageous for the viewing process itself, since the electrostatically charged particles are distributed more uniformly in the air flow.
- the choice of material depends on the electrons from ⁇ work function to be separated, mineral components, and can materials such as lytetrafluorethylen steel, copper, brass, polyvinyl comprise Polyvinyl chloride, aluminum or ceramic materials.
- the electron work function is the work required to remove an electron from the top energy band of a solid state atom; it is equal to the difference of the potential energies of an electron between the vacuum level u. the Fermi level.
- the vacuum level is in this case equal to the energy of an electron at rest at a great distance from the surface / the Fermi level is the electrochemical poten tial ⁇ the electrons in the solid.
- the rotor of the classifier may be made of steel, copper or brass, because the quartz becomes negatively charged due to its higher electron work on frictional contact with steel, copper or brass, and on the other hand the calcium carbonate Due to its lower work function, it is positively charged during frictional contact with steel, copper or brass.
- the crusher is preferably a ball mill ⁇ , but it can also be a rod mill, autogenous mill, Semiautogenmühle, roller mill, pin mill, impact crusher, hammer mill, vibration mill, jet mill,
- a centrifugal separator is preferably provided, but any other type of flow classifier may be used, for example: cross-flow classifier, zig-zag classifier, distribution disc classifier, up-flow classifier, spiral cup classifier.
- the solid particles to be separated can be of any type, contour, size and source, as long as they are small enough are registered in a flow classifier and classified therein and charged triboelectrically.
- the separable solid particles should have a particle size range of less than 10 mm, wherein preferably the average particle size should be in the range between greater than 2 ⁇ m to less than 1 mm.
- To be separated mineral powder may be any of a ⁇ be arbitrary number and in any mixture of different mineral components (valuable substances and impurities) composed.
- Fig. 1 shows an embodiment in which the electrostatic separating chamber into the fine material flow flow of the flow is implemented, and the coarse material into the inlet of
- Fig. 2 shows on the basis of the enlarged section II of Fig. 1, a separator, which is connected to boost the charge to a DC voltage source.
- Fig. 3 is an enlargement of Fig. 2 and more clearly shows some insulating parts.
- FIG. 4 shows an embodiment in which the separation chamber is implemented in the coarse material stream of the flow classifier.
- the plant according to FIG. 1 contains a ball mill 1 for comminuting and digesting the mineral raw material and a centrifugal separator 2 which, in addition to the classification, simultaneously serves for the triboelectric charging of the comminuted mineral particles.
- an external direct electrical voltage 10 can be connected to one or more rotating or stationary parts of the flow classifier 2.
- the classifier basket 15 is connected to the drive motor 18 by means of the rotor shaft 25 and coupling 19.
- a slip ring 20 is mounted, which is connected via two carbon brushes 17 to one pole of a DC voltage source 10, while the other pole is grounded.
- the electrical voltage delivered by the DC voltage source 10 is transmitted via the carbon brushes 17 and the slip ring 20 to the rotor shaft 25 made of electrically conductive material and further to the separator basket 15 which is conductively attached to the rotor shaft.
- the rotor shaft 25 is in the region of the bushing covered by the fines outlet tube 14 with the sleeve 22 of electrically non-conductive material.
- the fines outlet pipe is protected by the electrical insulation layer 37 from uncontrolled voltage transitions.
- the DC rotor shaft 25 is separated by the electrically insulated clutch 19 and the electrical insulation layer 36 from the drive motor 18 ⁇ .
- the live components in the storage of the rotor shaft 25 and the slip ring 20 are separated by an electrically non-conductive protective housing 21 from the environment.
- the fine material outlet pipe 14 of the classifier is likewise insulated from the classifier housing 23 by an electrically non-conductive insulating layer 29.
- the classifying air is introduced through the sighting air inlet 16 and the crushed mineral powder 26 through the feed opening 27 into the viewing space and dispersed through the turbulent air flow 25 prevailing in the viewing space.
- Grobgutaustritt 28 are discharged from the classifier.
- Embodiment in a further is to enhance the triboelectric up the value of material particles and the impurities of the classifier 15 charge coated with a material having a work function between the electric ⁇ nenaustrittsarbeit of the valuable substance and the Verunreini ⁇ supply lies.
- the Feingutaus- may be made enters tube 14 from a material of the ⁇ sen electron work between the electron ⁇ work function of the material and that the contamination is located.
- the connecting pipe 11 between Strö ⁇ mungsklassierer 2 and the separation chamber 3 can be connected to the pole of a DC voltage source 10 is connected.
- the charged fines stream 32 passes into a preferably vertically aligned electrostatic
- Separation chamber 3 which is equipped with separation electrodes 4, 4a.
- the dispersion listed charged fine material is separated into a Dispersi ⁇ ons stream 30 containing the purified product and a dispersion stream 31, which contains the separated foreign particles.
- the two separate dispersion streams 30 and 31 are passed through a respective system for separating the air.
- These two air separation systems consist for example of separation cyclone 7 and / or dust filter 8 and fan 9, which generates by vacuum the required air flow for the dispersion and transport of the Mine- ralstoffteilchen by the flow classifier and the separation chamber.
- the purified mineral powder passes into container 12, and the separated foreign particle powder passes into another container 13.
- Fig. 4 shows an embodiment in which the fines flow of the classifier 2 is the final product, while the coarse material flow 24 of the flow classifier is passed under supply of the required air 33 in a elektrosta ⁇ palatic separation chamber 3.
- the coarse dispersion is divided in this case flows therefore in two partial ⁇ , of which one partial stream 34, the value comprises particles is recycled to the entrance of the mill while the foreign particles containing certain other partial flow 35 - after deposition of the Dis ⁇ persions Kunststoff - treated as waste or by-product on.
- Fig. 4 corresponds substantially to the Fig. 1, the same parts are provided with the same reference numerals.
Landscapes
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Combined Means For Separation Of Solids (AREA)
- Electrostatic Separation (AREA)
- Disintegrating Or Milling (AREA)
- Extraction Or Liquid Replacement (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
- Colloid Chemistry (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102005023950A DE102005023950B4 (de) | 2005-05-20 | 2005-05-20 | Anlage zur Herstellung disperser mineralischer Produkte |
PCT/EP2006/062425 WO2006122967A2 (de) | 2005-05-20 | 2006-05-18 | Verfahren und vorrichtung zur herstellung disperser mineralischer produkte |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1888243A2 true EP1888243A2 (de) | 2008-02-20 |
EP1888243B1 EP1888243B1 (de) | 2016-07-20 |
Family
ID=36999825
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06755254.7A Not-in-force EP1888243B1 (de) | 2005-05-20 | 2006-05-18 | Vorrichtung zur herstellung disperser mineralischer produkte |
Country Status (24)
Country | Link |
---|---|
US (2) | US8083165B2 (de) |
EP (1) | EP1888243B1 (de) |
JP (1) | JP5249750B2 (de) |
KR (1) | KR101304000B1 (de) |
CN (1) | CN101203317B (de) |
AR (1) | AR053472A1 (de) |
AU (1) | AU2006248979B2 (de) |
BR (1) | BRPI0610793B1 (de) |
CA (1) | CA2608779C (de) |
DE (1) | DE102005023950B4 (de) |
DK (1) | DK1888243T3 (de) |
ES (1) | ES2599177T3 (de) |
HU (1) | HUE031621T2 (de) |
IL (1) | IL187474A0 (de) |
JO (1) | JO3198B1 (de) |
MA (1) | MA29545B1 (de) |
MY (1) | MY145538A (de) |
NZ (1) | NZ563416A (de) |
PL (1) | PL1888243T3 (de) |
PT (1) | PT1888243T (de) |
RU (1) | RU2420357C2 (de) |
UA (1) | UA92172C2 (de) |
WO (1) | WO2006122967A2 (de) |
ZA (1) | ZA200710322B (de) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2959426B1 (fr) * | 2010-04-29 | 2012-06-01 | Vicat | Installation de broyage de matieres minerales avec presse a rouleaux |
DE102011050154A1 (de) * | 2011-05-06 | 2012-11-08 | Sanovia Ag | Verfahren zur Änderung der Struktur von Mineralien |
DE102011054293A1 (de) * | 2011-10-07 | 2013-04-11 | Sanoviva Ag | Verfahren zum Herstellen eines Mittels |
WO2013177373A1 (en) * | 2012-05-25 | 2013-11-28 | Lenew Holdings, Inc. | Plastic material separation system and method |
CN103567045B (zh) * | 2012-08-09 | 2016-04-20 | 昆山市密友粉体设备工程有限公司 | 涂料成套装备环保生产线 |
KR101569584B1 (ko) * | 2013-11-21 | 2015-11-16 | 주식회사 포스코 | 하전유닛 및 이를 이용한 정전 선별장치 |
EP3135380B1 (de) * | 2015-08-27 | 2017-10-11 | Josef Fischer | Kryogenmahlvorrichtung und -verfahren |
US10710094B2 (en) * | 2016-05-18 | 2020-07-14 | Syrah Resources Ltd. | Method and system for precision spheroidisation of graphite |
CN107716309A (zh) * | 2017-11-10 | 2018-02-23 | 上海燕龙基再生资源利用有限公司 | 用于废玻璃分拣的曲折筛分机 |
CN109078674B (zh) * | 2018-08-28 | 2020-08-11 | 安徽东升农牧科技有限公司 | 一种畜牧业用饲料破碎装置 |
KR102336832B1 (ko) * | 2021-02-03 | 2021-12-07 | 신영준 | 친환경 외부탄소원 대량 제조장치 및 이를 이용한 오폐수 처리방법 |
RU2764410C1 (ru) * | 2021-09-03 | 2022-01-17 | федеральное государственное бюджетное образовательное учреждение высшего образования «Санкт-Петербургский горный университет» | Способ сухого гравитационно-электрического обогащения угля |
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DE3825469A1 (de) * | 1988-07-27 | 1990-02-01 | Basf Ag | Verfahren zur dispergierung, zerkleinerung bzw. desagglomeration und sichtung von feststoffen |
DE3921823A1 (de) | 1989-07-03 | 1991-01-17 | Krupp Polysius Ag | Verfahren und anlage zur zerkleinerung von mahlgut |
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JP3884826B2 (ja) * | 1996-07-30 | 2007-02-21 | キヤノン株式会社 | 固体粒子の表面の処理装置、固体粒子の表面の処理方法及びトナーの製造方法 |
KR100187968B1 (ko) | 1996-08-12 | 1999-06-01 | 이재근 | 석탄회의 미연탄소분 분리장치 |
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EP1251964B1 (de) | 2000-01-21 | 2004-08-11 | The University of Western Ontario | Reibungsaufladung und elektrostatisches trennen von gemischten elektrisch isolierten teilchen |
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JP2001246290A (ja) * | 2000-03-07 | 2001-09-11 | Toshiba Corp | 金属粒子の製造方法および金属粒子の分級装置 |
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DE10154462A1 (de) * | 2001-11-08 | 2003-05-22 | Buehler Ag | Verfahren zum Isolieren von Aleuronteilchen |
-
2005
- 2005-05-20 DE DE102005023950A patent/DE102005023950B4/de not_active Expired - Fee Related
-
2006
- 2006-05-18 CA CA2608779A patent/CA2608779C/en not_active Expired - Fee Related
- 2006-05-18 ZA ZA200710322A patent/ZA200710322B/xx unknown
- 2006-05-18 ES ES06755254.7T patent/ES2599177T3/es active Active
- 2006-05-18 RU RU2007147472/03A patent/RU2420357C2/ru not_active IP Right Cessation
- 2006-05-18 EP EP06755254.7A patent/EP1888243B1/de not_active Not-in-force
- 2006-05-18 AU AU2006248979A patent/AU2006248979B2/en not_active Ceased
- 2006-05-18 PT PT67552547T patent/PT1888243T/pt unknown
- 2006-05-18 UA UAA200712717A patent/UA92172C2/ru unknown
- 2006-05-18 KR KR1020077029495A patent/KR101304000B1/ko active IP Right Grant
- 2006-05-18 HU HUE06755254A patent/HUE031621T2/en unknown
- 2006-05-18 BR BRPI0610793-1A patent/BRPI0610793B1/pt not_active IP Right Cessation
- 2006-05-18 CN CN2006800220931A patent/CN101203317B/zh not_active Expired - Fee Related
- 2006-05-18 US US11/920,609 patent/US8083165B2/en not_active Expired - Fee Related
- 2006-05-18 NZ NZ563416A patent/NZ563416A/en not_active IP Right Cessation
- 2006-05-18 JP JP2008511709A patent/JP5249750B2/ja not_active Expired - Fee Related
- 2006-05-18 WO PCT/EP2006/062425 patent/WO2006122967A2/de active Application Filing
- 2006-05-18 DK DK06755254.7T patent/DK1888243T3/en active
- 2006-05-18 PL PL06755254T patent/PL1888243T3/pl unknown
- 2006-05-19 MY MYPI20062313A patent/MY145538A/en unknown
- 2006-05-19 AR ARP060102064A patent/AR053472A1/es not_active Application Discontinuation
- 2006-05-21 JO JOP/2006/0145A patent/JO3198B1/ar active
-
2007
- 2007-11-19 IL IL187474A patent/IL187474A0/en not_active IP Right Cessation
- 2007-12-11 MA MA30475A patent/MA29545B1/fr unknown
-
2011
- 2011-11-16 US US13/297,725 patent/US8177150B2/en active Active
Non-Patent Citations (1)
Title |
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See references of WO2006122967A2 * |
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