EP3238828A1 - Helical conveyor centrifuge for the wet mechanical separation of solids - Google Patents
Helical conveyor centrifuge for the wet mechanical separation of solids Download PDFInfo
- Publication number
- EP3238828A1 EP3238828A1 EP17159643.0A EP17159643A EP3238828A1 EP 3238828 A1 EP3238828 A1 EP 3238828A1 EP 17159643 A EP17159643 A EP 17159643A EP 3238828 A1 EP3238828 A1 EP 3238828A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- screw
- separated
- solids
- shaft
- coil
- 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.)
- Pending
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B1/00—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles
- B04B1/20—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles discharging solid particles from the bowl by a conveying screw coaxial with the bowl axis and rotating relatively to the bowl
-
- 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
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B5/00—Washing granular, powdered or lumpy materials; Wet separating
- B03B5/62—Washing granular, powdered or lumpy materials; Wet separating by hydraulic classifiers, e.g. of launder, tank, spiral or helical chute concentrator type
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B11/00—Feeding, charging, or discharging bowls
- B04B11/02—Continuous feeding or discharging; Control arrangements therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B7/00—Elements of centrifuges
- B04B7/08—Rotary bowls
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B1/00—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles
- B04B1/20—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles discharging solid particles from the bowl by a conveying screw coaxial with the bowl axis and rotating relatively to the bowl
- B04B2001/2041—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles discharging solid particles from the bowl by a conveying screw coaxial with the bowl axis and rotating relatively to the bowl with baffles, plates, vanes or discs attached to the conveying screw
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B1/00—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles
- B04B1/20—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles discharging solid particles from the bowl by a conveying screw coaxial with the bowl axis and rotating relatively to the bowl
- B04B2001/205—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles discharging solid particles from the bowl by a conveying screw coaxial with the bowl axis and rotating relatively to the bowl with special construction of screw thread, e.g. segments, height
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B1/00—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles
- B04B1/20—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles discharging solid particles from the bowl by a conveying screw coaxial with the bowl axis and rotating relatively to the bowl
- B04B2001/2058—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles discharging solid particles from the bowl by a conveying screw coaxial with the bowl axis and rotating relatively to the bowl with ribbon-type screw conveyor
Definitions
- the invention relates to a screw centrifuge for wet-mechanical separation of solids according to their density with a rotating cylindrical drum with two conical drums connected and openings for the discharge of the separated substances as a sink and Weggut and the separating liquid, and a rotating shaft with openings for the entry of solids to be separated, wherein the shaft has two counter-rotating screw flights, wherein a baffle plate is arranged on the shaft in the axial direction between the entry opening for the substances to be separated and the discharge for the Sinkgut, wherein the outer coil of the screw for the Sinkgut with an overlap the inner helix of the screw for the Weggut, wherein the helix are in opposite directions.
- Such screw centrifuges are eg from the EP 0 553 793 B1 known. Such machines are limited in throughput for the light goods or floating. If the established throughput is increased, the machine locks with the product.
- Other similar machines are from the DE 195 16 636 A1 or the EP 1485 205 B1 known. Such machines are used for a 3-phase separation of mixtures, for example, different plastic fractions and a separating liquid. By suitable choice of the separating liquid in the density, several different fractions can be separated in multi-stage process. Further describes the DE 3134935 A1 a decanter centrifuge for separating one solid phase and two liquid phases. A separation of light goods or floating is not possible here. Also the decanter centrifuge of DE 2612696 does not allow separation of floating material.
- the US 2528974 describes a centrifugal separator for the separation of solid and liquid, which also no three-phase separation is possible.
- the spiral separator of the US4781822 separates two types of particles according to density or size.
- the aim of the invention is therefore to achieve better separation and higher throughput in a three-phase separation.
- the invention is therefore characterized in that the screw for the floating material is designed as a multi-start screw.
- the throughput can be greatly increased with the same separation quality and product residual moisture, whereby a significant reduction of blockage / blocking of the machine is achieved despite higher throughputs.
- a favorable embodiment of the invention is characterized in that the screw flight for the material to be dewed extends to the drum and the screw flight for the floating material has a smaller outer diameter than the inner diameter of the screw flight of the screw for the dew.
- a favorable development of the invention is characterized in that the part of the overlap of the screw flight for the material to be dew directly connected to the coil for the floating, preferably welded, is. Thus, no additional supports are required, which could affect the paths of the separated goods.
- An advantageous development of the invention is characterized in that the screw is designed for the sinker as a multi-start screw. With a suitable choice of gears and pitch, the total capacity of a screw can be increased.
- the amount of product produced by the respective helical turn (the product "heap" in front of the helix) is significantly reduced compared to the single-helix helix. This supports the stability of the process, the separation of the product fractions, the transport of the respective fraction and the separation from the separation medium at significantly increased product throughputs.
- a two-piece screw conveyor 12 with screw flights 13 for discharging the Sinkgutes 16 and with screw flights 23 for discharging the floating material 17.
- the debris 16 and the floating material 17 are transported to oppositely arranged discharge openings 14, 15: the sinker 16 to one or more discharge openings 14, the floating material 17 to one or more discharge openings 15th
- the separating liquid 18 separated from the material to be dehumidified and from the floating goods is discharged via one or more nozzles 19 on the heavy goods side of the separating device 10.
- a baffle plate 20 prevents that during the separation process the floating material 17 can be detected by the coils 13 for the Sinkgut 16 and passes to the Sinkgutaustrag 14.
- the mixture of solids and separating liquid to be separated is fed via an axially arranged feed tube 21 through one or more feed openings 22 into the container interior.
- the mixture for example, suspension
- the screw conveyor 12 is usually driven at a different speed from the drum speed.
- the floating material is now detected by the worm gear 23 and conveyed to the discharge 15, the silt 16 is detected by the worm gear 13, conveyed to the discharge opening 14 and lifted out of the separating liquid due to the conical shape of the lateral surface of the drum 11 and the discharge opening 14 from the Drum 11 conveyed out.
- the conical part of the drum 11 in the region of the discharge opening 15 facilitates the separation of the floating material 17 from the separating liquid 18.
- Fig. 2 now shows a screw centrifuge according to the invention with an analogous representation to Fig. 1 was chosen. Same parts are denoted by the same reference numerals as in FIG Fig. 1 Mistake.
- additional parallel coil 13 ' This extension consists of one or more additional narrow (band) coil (s) 13 ', which (r) is arranged parallel to the coil 13 around the coil 23 (and 23') for the floating material 17 around. Due to the contrariness, there is a better separation of the solids.
- the coil 13,13 'are supported there are no separate supports required, which can constrict the helical turns of the screw and can lead to blockage / blocking of the machine.
- the worm spiral 23, 23 ' is designed to be double-threaded for the floating material 17, as a result of which a better delivery and thus a higher throughput can be achieved.
- feedstock often plastic mixtures of different densities are used, which are to be separated into swimming and Sinkgut-fractions. Depending on the application, the separation leads to a separation selectivity of well over 99% of the individual fractions.
- Fig. 3 is a cut through Fig. 2 shown along the line III-III. It shows a section through the single helix.
- the screw 12 In the upper part of the section through the first coil 23 of the screw 12 for the separation of the floating material 17 is shown.
- the second coil 23 'for the floating In the lower part can be seen a section through the second coil 23 'for the floating.
- At the outer periphery of the coil 13 'for the debris 16 is shown.
- a catchy helix for the Sinkgut 16 occurs only the coil 13 'as shown in the upper part.
- Wendel 13 As shown in the lower part of the drawing, available.
- the invention is not limited by the examples in the drawings.
- the edges of the coils can also be protected by wear pieces from excessive wear.
- the invention relates to a screw centrifuge for wet-mechanical separation of solids by their density, having a rotating cylindrical drum with two conical drums connected thereto, with openings for the discharge of the separated substances as a sink and Weggut and the separating liquid, and a rotating shaft, with openings for the entry of the solids to be separated, wherein the shaft has two opposing worm helix, wherein in the axial direction between the entry opening for the substances to be separated and the discharge opening for the Sinkgut a baffle plate is arranged on the shaft.
- the outer spiral of the worm for the Sinkgut an overlap with the inner single or multi-start helix of the worm for the floating, wherein the helix are in opposite directions.
- the outer spiral of the worm for the debris can also be more smooth. As a result, a particularly high throughput can be achieved with a still high selective separation and a low residual moisture content.
- the invention also relates to a screw conveyor for such a screw centrifuge.
Abstract
Die Erfindung betrifft eine Schneckenzentrifuge zur nassmechanischen Trennung von Feststoffen nach ihrer Dichte mit einer rotierenden zylindrischen Trommel (11) mit zwei konischen damit verbundenen Trommeln, mit Öffnungen (14, 15) für den Austrag der getrennten Stoffe als Sinkgut (16) und Schwimmgut (17) und der Trennflüssigkeit (18), und einer rotierenden Welle (12), mit Öffnungen (22) für den Eintrag der zu trennenden Feststoffe, wobei die Welle (12) zwei gegenläufige Schneckenwendel (13, 13', 13", 23, 23') aufweist, wobei in axialer Richtung zwischen der Eintragsöffnung (22) für die zu trennenden Stoffe und der Austragsöffnung (14) für das Sinkgut (16) eine Stauscheibe (20) auf der Welle angeordnet ist, wobei der außenliegende Wendel (13', 13") der Schnecke für das Sinkgut (16) eine Überdeckung mit dem innenliegenden Wendel (23, 23') der Schnecke für das Schwimmgut (17) aufweist, wobei die Wendel (13, 13', 13", 23, 23') gegenläufig sind. Sie ist vornehmlich dadurch gekennzeichnet, dass die Schnecke für das Schwimmgut (17) als mehrgängige Schnecke ausgeführt ist. Der außenliegende Wendel (13', 13") der Schnecke für das Sinkgut (16) kann auch mehrgängig sein. Dadurch lässt sich ein besonders hoher Durchsatz bei weiterhin hoher selektiver Trennung und gleich niedriger Restfeuchte erreichen. Die Erfindung betrifft auch eine Transportschnecke für eine derartige Schneckenzentrifuge.The invention relates to a screw centrifuge for the wet mechanical separation of solids according to their density with a rotating cylindrical drum (11) with two conical drums connected thereto, with openings (14, 15) for discharging the separated substances as degrits (16) and floating goods (17 ) and the separating liquid (18), and a rotating shaft (12), with openings (22) for the entry of the solids to be separated, wherein the shaft (12) has two counter-rotating screw flights (13, 13 ', 13 ", 23, 23 '), wherein in the axial direction between the entry opening (22) for the substances to be separated and the discharge opening (14) for the debris (16) a baffle plate (20) is arranged on the shaft, wherein the outer coil (13', 13 ") of the auger (16) has an overlap with the inner helix (23, 23 ') of the auger (17), the helix (13, 13', 13", 23, 23 ') It is primarily characterized by indicates that the screw for the floating material (17) is designed as a multi-speed screw. The outward helix (13 ', 13 ") of the worm (16) can also be more continuous, which means that a particularly high throughput can be achieved with a still high selective separation and low residual moisture content screw centrifuge.
Description
Die Erfindung betrifft eine Schneckenzentrifuge zur nassmechanischen Trennung von Feststoffen nach ihrer Dichte mit einer rotierenden zylindrischen Trommel mit zwei konischen damit verbundenen Trommeln und Öffnungen für den Austrag der getrennten Stoffe als Sinkgut und Schwimmgut und der Trennflüssigkeit, und einer rotierenden Welle mit Öffnungen für den Eintrag der zu trennenden Feststoffe, wobei die Welle zwei gegenläufige Schneckenwendel aufweist, wobei in axialer Richtung zwischen der Eintragsöffnung für die zu trennenden Stoffe und der Austragsöffnung für das Sinkgut eine Stauscheibe auf der Welle angeordnet ist, wobei der außenliegende Wendel der Schnecke für das Sinkgut eine Überdeckung mit der innenliegenden Wendel der Schnecke für das Schwimmgut aufweist, wobei die Wendel gegenläufig sind.The invention relates to a screw centrifuge for wet-mechanical separation of solids according to their density with a rotating cylindrical drum with two conical drums connected and openings for the discharge of the separated substances as a sink and Schwimmgut and the separating liquid, and a rotating shaft with openings for the entry of solids to be separated, wherein the shaft has two counter-rotating screw flights, wherein a baffle plate is arranged on the shaft in the axial direction between the entry opening for the substances to be separated and the discharge for the Sinkgut, wherein the outer coil of the screw for the Sinkgut with an overlap the inner helix of the screw for the Schwimmgut, wherein the helix are in opposite directions.
Derartige Schneckenzentrifugen sind z.B. aus der
Ziel der Erfindung ist es daher eine bessere Trennung und höhere Durchsatzleistung bei einer Dreiphasen Trennung zu erreichen.The aim of the invention is therefore to achieve better separation and higher throughput in a three-phase separation.
Die Erfindung ist daher dadurch gekennzeichnet, dass die Schnecke für das Schwimmgut als mehrgängige Schnecke ausgeführt ist. Damit kann der Durchsatz bei gleicher Trennqualität und Produktrestfeuchte stark erhöht werden, wobei auch eine deutliche Reduktion von Verstopfung/Verblockung der Maschine trotz höherer Durchsätze erreicht wird.The invention is therefore characterized in that the screw for the floating material is designed as a multi-start screw. Thus, the throughput can be greatly increased with the same separation quality and product residual moisture, whereby a significant reduction of blockage / blocking of the machine is achieved despite higher throughputs.
Eine günstige Ausgestaltung der Erfindung ist dadurch gekennzeichnet, dass der Schneckenwendel für das Sinkgut bis zur Trommel reicht und der Schneckenwendel für das Schwimmgut einen kleineren Außendurchmesser aufweist als der Innendurchmesser des Schneckenwendel der Schnecke für das Sinkgut. Durch diese Maßnahme und die Gegenläufigkeit der beiden Schnecken kann das Leichtgut, das auf der Trennflüssigkeit aufschwimmt, von dem inneren Wendel zum Leichtgutaustrag transportiert werden, während das Schwergut absinkt, sich an der Trommelwand sammelt und von dem äußeren Wendel zum gegenüberliegenden Austrag transportiert wird. Die Trennflüssigkeit wird hierbei gesondert über Düsen abgeschieden.A favorable embodiment of the invention is characterized in that the screw flight for the material to be dewed extends to the drum and the screw flight for the floating material has a smaller outer diameter than the inner diameter of the screw flight of the screw for the dew. By this measure and the opposing nature of the two screws, the lightweight material floating on the separating liquid can be transported from the inner spiral to Leichtgutaustrag while the heavy material drops, collects on the drum wall and is transported from the outer coil to the opposite discharge. The separating liquid is deposited separately via nozzles.
Eine günstige Weiterbildung der Erfindung ist dadurch gekennzeichnet, dass der Teil der Überdeckung der Schneckenwendel für das Sinkgut direkt mit dem Wendel für das Schwimmgut verbunden, vorzugsweise verschweißt, ist. Damit werden keinerlei zusätzliche Stützen erforderlich, die die Wege des separierten Gutes beeinträchtigen könnten.A favorable development of the invention is characterized in that the part of the overlap of the screw flight for the material to be dew directly connected to the coil for the floating, preferably welded, is. Thus, no additional supports are required, which could affect the paths of the separated goods.
Eine vorteilhafte Weiterbildung der Erfindung ist dadurch gekennzeichnet, dass die Schnecke für das Sinkgut als mehrgängige Schnecke ausgeführt ist. Bei einer geeigneten Wahl von Gängen und Steigung kann die Gesamtkapazität einer Schnecke gesteigert werden.An advantageous development of the invention is characterized in that the screw is designed for the sinker as a multi-start screw. With a suitable choice of gears and pitch, the total capacity of a screw can be increased.
Die vom jeweiligen Wendelgang geförderte Produktmenge (das Produkt-"Haufwerk" vor dem Wendel) ist im Vergleich zum eingängigen Wendel deutlich reduziert. Dies unterstützt die Stabilität des Prozesses, die Trennung der Produktfraktionen, den Transport derjeweiligen Fraktion und die Abtrennung vom Trennmedium bei deutlich erhöhten Produktdurchsätzen.The amount of product produced by the respective helical turn (the product "heap" in front of the helix) is significantly reduced compared to the single-helix helix. This supports the stability of the process, the separation of the product fractions, the transport of the respective fraction and the separation from the separation medium at significantly increased product throughputs.
Die Erfindung wird nun im Folgenden anhand der Zeichnungen beispielhaft beschrieben, wobei
-
Fig. 1 eine Schneckenzentrifuge nach dem Stand der Technik -
Fig. 2 eine Schneckenzentrifuge nach der Erfindung -
Fig. 3 einen Schnitt durchFig. 2 entlang Linie III-III
-
Fig. 1 a worm centrifuge according to the prior art -
Fig. 2 a screw centrifuge according to the invention -
Fig. 3 a cut throughFig. 2 along line III-III
In
In
Die Erfindung ist nicht durch die Beispiele in den Zeichnungen beschränkt. Die Kanten der Wendeln können auch durch Verschleißstücke vor zu starkem Verschleiß geschützt werden.The invention is not limited by the examples in the drawings. The edges of the coils can also be protected by wear pieces from excessive wear.
Zusammenfassend ist festzuhalten, dass die Erfindung eine Schneckenzentrifuge zur nassmechanischen Trennung von Feststoffen nach ihrer Dichte betrifft, die eine rotierende zylindrische Trommel mit zwei konischen damit verbundenen Trommeln aufweist, mit Öffnungen für den Austrag der getrennten Stoffe als Sinkgut und Schwimmgut und der Trennflüssigkeit, und einer rotierenden Welle, mit Öffnungen für den Eintrag der zu trennenden Feststoffe, wobei die Welle zwei gegenläufige Schneckenwendel aufweist, wobei in axialer Richtung zwischen der Eintragsöffnung für die zu trennenden Stoffe und der Austragsöffnung für das Sinkgut eine Stauscheibe auf der Welle angeordnet ist. Außerdem weist der außenliegende Wendel der Schnecke für das Sinkgut eine Überdeckung mit dem innenliegenden ein- oder mehrgängigen Wendel der Schnecke für das Schwimmgut auf, wobei die Wendel gegenläufig sind. Der außenliegende Wendel der Schnecke für das Sinkgut kann auch mehrgängig sein. Dadurch lässt sich ein besonders hoher Durchsatz bei weiterhin hoher selektiver Trennung und gleich niedriger Restfeuchte erreichen. Die Erfindung betrifft auch eine Transportschnecke für eine derartige Schneckenzentrifuge.In summary, it should be noted that the invention relates to a screw centrifuge for wet-mechanical separation of solids by their density, having a rotating cylindrical drum with two conical drums connected thereto, with openings for the discharge of the separated substances as a sink and Schwimmgut and the separating liquid, and a rotating shaft, with openings for the entry of the solids to be separated, wherein the shaft has two opposing worm helix, wherein in the axial direction between the entry opening for the substances to be separated and the discharge opening for the Sinkgut a baffle plate is arranged on the shaft. In addition, the outer spiral of the worm for the Sinkgut an overlap with the inner single or multi-start helix of the worm for the floating, wherein the helix are in opposite directions. The outer spiral of the worm for the debris can also be more smooth. As a result, a particularly high throughput can be achieved with a still high selective separation and a low residual moisture content. The invention also relates to a screw conveyor for such a screw centrifuge.
Claims (6)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ATA50367/2016A AT518275B1 (en) | 2016-04-26 | 2016-04-26 | SCHNECKENZENTRIFUGE FOR WET MECHANICAL SEPARATION OF SOLIDS |
Publications (1)
Publication Number | Publication Date |
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EP3238828A1 true EP3238828A1 (en) | 2017-11-01 |
Family
ID=58261596
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP17159643.0A Pending EP3238828A1 (en) | 2016-04-26 | 2017-03-07 | Helical conveyor centrifuge for the wet mechanical separation of solids |
Country Status (5)
Country | Link |
---|---|
US (1) | US10213791B2 (en) |
EP (1) | EP3238828A1 (en) |
JP (1) | JP6840011B2 (en) |
AT (1) | AT518275B1 (en) |
CA (1) | CA2963405C (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
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AT518275B1 (en) | 2016-04-26 | 2017-09-15 | Andritz Tech And Asset Man Gmbh | SCHNECKENZENTRIFUGE FOR WET MECHANICAL SEPARATION OF SOLIDS |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2528974A (en) * | 1945-09-19 | 1950-11-07 | Process Dev Company | Method and apparatus for centrifugal separation |
EP0553793A2 (en) * | 1992-01-31 | 1993-08-04 | Klöckner-Humboldt-Deutz Aktiengesellschaft | Apparatus and method for the wet-mechanical treatment of solids |
EP1020227A1 (en) * | 1999-01-18 | 2000-07-19 | Baker Hughes (Deutschland) GmbH | Centrifuge for the wet mechanical separation of solid mixtures |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2919848A (en) * | 1956-03-14 | 1960-01-05 | Andrew F Howe | Centrifugal separation |
DE2612696A1 (en) * | 1975-04-01 | 1976-10-14 | Pennwalt Corp | FULL-CASE DECANTING CENTRIFUGE |
DE3134935A1 (en) * | 1980-09-09 | 1982-06-09 | Alfa-Laval Separation A/S, 2860 Soeborg | "CENTRAL DECANTER CENTRIFUGE" |
US4781822A (en) * | 1985-08-08 | 1988-11-01 | Minpro Pty. Limited | Spiral separator |
DE4222119C2 (en) * | 1992-07-06 | 1997-07-10 | Deutz Ag | Device and method for the wet mechanical separation of solid mixtures |
DE4305346A1 (en) * | 1993-02-20 | 1994-08-25 | Kloeckner Humboldt Deutz Ag | Device and method for the wet-wash concentration of solids |
JP2002186878A (en) * | 2000-12-21 | 2002-07-02 | Nkk Corp | Wet type specific gravity separation apparatus and operation method thereof |
DE10212187A1 (en) * | 2002-03-20 | 2003-10-02 | Hiller Gmbh | screw centrifuge |
AT518275B1 (en) | 2016-04-26 | 2017-09-15 | Andritz Tech And Asset Man Gmbh | SCHNECKENZENTRIFUGE FOR WET MECHANICAL SEPARATION OF SOLIDS |
-
2016
- 2016-04-26 AT ATA50367/2016A patent/AT518275B1/en active
-
2017
- 2017-03-07 EP EP17159643.0A patent/EP3238828A1/en active Pending
- 2017-03-30 JP JP2017067514A patent/JP6840011B2/en active Active
- 2017-04-05 CA CA2963405A patent/CA2963405C/en active Active
- 2017-04-24 US US15/494,853 patent/US10213791B2/en active Active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2528974A (en) * | 1945-09-19 | 1950-11-07 | Process Dev Company | Method and apparatus for centrifugal separation |
EP0553793A2 (en) * | 1992-01-31 | 1993-08-04 | Klöckner-Humboldt-Deutz Aktiengesellschaft | Apparatus and method for the wet-mechanical treatment of solids |
EP1020227A1 (en) * | 1999-01-18 | 2000-07-19 | Baker Hughes (Deutschland) GmbH | Centrifuge for the wet mechanical separation of solid mixtures |
Also Published As
Publication number | Publication date |
---|---|
CA2963405C (en) | 2022-04-26 |
AT518275B1 (en) | 2017-09-15 |
CA2963405A1 (en) | 2017-10-26 |
US10213791B2 (en) | 2019-02-26 |
JP6840011B2 (en) | 2021-03-10 |
JP2017196615A (en) | 2017-11-02 |
US20170304846A1 (en) | 2017-10-26 |
AT518275A4 (en) | 2017-09-15 |
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