EP0472930A2 - Trieur pneumatique de préférence vertical - Google Patents

Trieur pneumatique de préférence vertical Download PDF

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Publication number
EP0472930A2
EP0472930A2 EP91112707A EP91112707A EP0472930A2 EP 0472930 A2 EP0472930 A2 EP 0472930A2 EP 91112707 A EP91112707 A EP 91112707A EP 91112707 A EP91112707 A EP 91112707A EP 0472930 A2 EP0472930 A2 EP 0472930A2
Authority
EP
European Patent Office
Prior art keywords
outlet
air
classifying
classifier according
cover plate
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
Application number
EP91112707A
Other languages
German (de)
English (en)
Other versions
EP0472930A3 (en
EP0472930B1 (fr
Inventor
Roland Dr.-Ing. Nied
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from DE4024440A external-priority patent/DE4024440A1/de
Priority claimed from DE4025247A external-priority patent/DE4025247A1/de
Application filed by Individual filed Critical Individual
Publication of EP0472930A2 publication Critical patent/EP0472930A2/fr
Priority claimed from US07/900,310 external-priority patent/US5244481A/en
Publication of EP0472930A3 publication Critical patent/EP0472930A3/de
Application granted granted Critical
Publication of EP0472930B1 publication Critical patent/EP0472930B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B7/00—Selective separation of solid materials carried by, or dispersed in, gas currents
    • B07B7/08—Selective separation of solid materials carried by, or dispersed in, gas currents using centrifugal force
    • B07B7/083—Selective separation of solid materials carried by, or dispersed in, gas currents using centrifugal force generated by rotating vanes, discs, drums, or brushes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B11/00—Arrangement of accessories in apparatus for separating solids from solids using gas currents
    • B07B11/06—Feeding or discharging arrangements

Definitions

  • the present invention relates to an air classifier with a classifying wheel.
  • the classifying wheel has two cover disks which are held at a predetermined distance from one another with the interposition of blades near the outer circumference.
  • This classifying wheel is rotatably mounted about an axis in a fixed housing.
  • the material to be sifted consists of coarser and finer dust particles that are carried in an air stream and form the product stream that is introduced into the housing. It reaches the classifying wheel in the radial direction. In it the coarser dust particles are separated from the air flow and the air flow with the fine dust particles axially leaves the sight wheel through a discharge pipe.
  • the air flow with the fine dust particles can be fed to a filter in which air and fine dust are separated from one another.
  • a general aspect of the present invention is to design such an air classifier in such a way that the flow conditions are improved in order to save energy, in order to improve the effectiveness with regard to the separation performance and in order to enable a compact construction.
  • the flow speed should be able to be changed in relation to the values to take into account special operating conditions, which inevitably occur when the two cover disks or at least their mutually facing sides or surfaces run parallel to one another, as is the case with known air classifiers.
  • the coarse particles were removed from the original raw gas stream and removed from the separator housing.
  • the remaining raw gas stream with the smaller, lighter-weight particles remaining in it flows into the air classifier according to FIG. 1 or according to FIG. 2, although these smaller, lighter-weight particles are also different with regard to their size or weight, that is to say with regard to their "mass" .
  • a classifier wheel which in turn has a first cover plate 1 on the outflow side, which is upper in the case of a vertical arrangement of the classifier, and a second cover plate 2 which is axially offset with respect thereto and in the case of a vertical arrangement of the classifier.
  • a first cover plate 1 on the outflow side which is upper in the case of a vertical arrangement of the classifier
  • a second cover plate 2 which is axially offset with respect thereto and in the case of a vertical arrangement of the classifier.
  • blades 3 are fixedly arranged on the outer circumference of the outflow-side and second cover disks 1, 2 by holding the two cover disks together, for example by bolts, and holding the blades between them.
  • Cover disks and blades form the classifying wheel rotating about its longitudinal axis 4.
  • This longitudinal axis 4 can in principle stand vertically and mark a standing classifier or it can lie horizontally and mark a lying wind classifier.
  • the outlet connection 5 is firmly connected to the outflow-side cover plate 1. It is inserted as a dip tube with section 6 into the interior of the sight wheel 1 to 3 in order to be connected in a rotationally fixed manner within the sight wheel to the cover disk 1 on the outflow side.
  • the outlet nozzle above the cover plate 1 is widened in a funnel shape; Arrows and outflows of the visual air enriched with fine dust coming from a separator are indicated by arrows 8.9.
  • the classifying wheel and the outlet port 5 assigned to the classifying wheel are arranged in a housing which consists of a pot-shaped lower part 10 and an upper cover 11.
  • the two housing parts 10, 11 lie one above the other in peripheral flanges 12, 13 and are detachably connected to one another by screw connections 14 inserted through these peripheral flanges.
  • the lower housing part 10 has a lateral bracket 15, in which the cover 11 is pivotally mounted about its longitudinal axis by means of a pin 16. To pivot the cover 11 about the longitudinal axis of the pin 16, the screw connections 14 inserted through the flanges 12, 13 are released.
  • the cover 11 is provided with a neck-shaped extension 17, in which the outlet connection 5, with an upper, cylindrical tubular section 18, is rotatably mounted about its longitudinal axis in two axially offset bearings 19, 20.
  • the outlet nozzle is connected to a vacuum source, not shown.
  • the drive torque for the compressor wheel is partially introduced at the upper end of the outlet nozzle 5, 6 or 18, for which purpose, for example, outside the upper end of the neck-shaped extension 17, which is releasably closed by a cover, a pulley 21 connected to the outlet nozzle and acting on it Drive belts 22 are shown; in part, the drive torque is also introduced via the second cover disk 2, in that a belt drive 30, 31 is assigned to a bearing bolt 24 of the cover disk 2 outside a shoulder 27 of the bearing housing part 10.
  • the belt drives 21, 22 on the one hand and 30, 31 on the other hand are matched to one another in such a way that the two cover disks 2, 3 are driven at the same speed or in a desired different speed ratio.
  • the second cover disk 2 which is lower in the case of a vertical arrangement of the air classifier, is fastened to the bearing pin 24 by means of a pin 23, which is rotatably mounted about its longitudinal axis in bearings 25, 26 in the neck-shaped extension 27 of the lower housing part 10.
  • a guide tube 32 is arranged concentrically with the rim of the blades 3 and outside of this blade rim and is held with support blades 33 in the lower housing part 10 such that it surrounds the blade rim 3 concentrically.
  • an inlet connection 34 opens radially into the lower housing part 10 directly above the housing base for introducing the classifying air.
  • an inlet connection 35 for the material opens radially into the lower housing part 10 and is conveyed into the housing by means of an inlet screw 36 arranged in the inlet connection 35.
  • the classifying air enters through the connecting piece 34, the material through the connecting piece 35 into the lower housing part 10, whereupon the classifying air enriched with good through the annular channel 37 between the guide tube 32 and the wall of the lower part 10 through a manifold 38 is supplied in the housing cover 11, in which a flow reversal takes place.
  • the well-enriched classifying air now gets into the area inside the guide tube 32 to be sucked in from there in the radial direction into the classifying wheel, where the coarse-grained material is separated off on the blades 3, so that classifying material laden with fine material enters the classifying wheel.
  • This fine air laden sight air is deflected in the sight wheel in an axial flow direction and is now sucked off through the dip tube 5.
  • the fine material is also filtered out of the air in a filter downstream of the dip tube section 18.
  • the material that is too coarse reaches the area below the second cover plate 2 along the second cover plate 2 in order to be further processed from there in a suitable manner. It becomes the classifier housing taken in a suitable place and in a suitable manner, which however should not be explained in detail because it is not part of the invention.
  • the interior of the housing 10, 11 is easily accessible and cleaning and maintenance, in particular of the classifying wheel part with the upper cover disc 1 and the blades 3 removed from the lower cover disc 2, and, if appropriate, its repair are easily possible.
  • the entire vertical air classifier is enclosed by a housing which essentially consists of the upper housing part 40 and the lower housing part 41.
  • Upper housing part 40 and lower housing part 41 are each provided with an outwardly directed peripheral flange 42 and 43 on the upper and lower edge.
  • the two flanges 42, 43 lie on one another and are fixed against one another by suitable means.
  • suitable means for fixing are, for example, screw connections. Clamps or the like can also serve as releasable fastening means.
  • both flanges are connected to one another by a joint 44 in such a way that the upper housing part 40 can be pivoted upwards in the direction of arrow 45 relative to the lower housing part 41 after the flange connection means have been released, and the upper housing part 40 from below, the lower housing part 41 is accessible from above.
  • the lower housing part 41 in turn is formed in two parts and it consists essentially of the cylindrical visible space housing 46 with the flange 43 at its upper open end and the discharge cone 47, which tapers conically downwards.
  • the discharge cone 47 and the viewing space housing 46 lie on top of one another at the upper and lower ends with flanges 48, 49 and both flanges 48, 49 of the discharge cone 47 and the viewing space housing 46 are connected to one another like the flanges 43, 44 by releasable fastening means.
  • the classifier housing assembled in this way is suspended in support arms 50, several of which are distributed as uniformly as possible over the circumference of the compressor housing and act on the cylindrical classroom housing 46.
  • An essential part of the built-in housing of the air classifier is in turn the classifying wheel with the upper cover plate 1, the lower downstream classing plate 2 axially spaced apart from this and the arranged between the outer edges of the two classing plates 1, 2, firmly connected to it and evenly distributed over the circumference of the classifying wheel Buckets 3 appropriate contour.
  • the driving of the classifying wheel is effected via the upper cover plate 1, while the lower cover plate 2 is the cover plate on the outflow side.
  • the bearing of the classifying wheel comprises an expediently positively driven shaft 51 which is led out of the classifier housing with the upper end and carries the classifying wheel in a rotationally fixed manner within the classifier housing in a rotationally fixed position.
  • the sight wheel shaft 51 is led out of the classifier housing in a pair of machined plates 52, 53, which close off the housing at the upper end of an upwardly frustoconical housing end section 54, guide the shaft and seal this shaft passage without obstructing the rotational movements of the shaft.
  • the upper plate 53 can expediently be assigned as a flange to the shaft 51 in a rotationally fixed manner and can be rotatably supported on the lower plate 52, which in turn is assigned to the housing end section 54, via rotary bearings 55.
  • the underside of the outflow-side cover plate 2 lies in the common plane between the flanges 43, 44, so that the classifying wheel is arranged in its entirety within the foldable upper housing part.
  • the upper housing part 40 also has the product feed port 56, which is a tube, the longitudinal axis of which runs parallel to the axis of rotation of the classifying wheel 11 and its drive shaft 51 and which is arranged as far out as possible.
  • the viewing space housing 46 accommodates the tubular outlet connection 57 which is arranged coaxially with the viewing wheel and which lies with its upper end just below the outflow-side cover disk 2 of the viewing wheel, but without being connected to it.
  • an outlet chamber 58 is placed in the same axis, which is also tubular, but the diameter of which is considerably larger than the diameter of the outlet connector 57, at least twice as large as the diameter of the outlet connector.
  • the outlet port is inserted into an upper cover plate 59 of the outlet chamber 58, at the bottom the outlet chamber 58 is closed by a removable cover 60.
  • outlet nozzle 57 and outlet chamber 58 is held in a plurality of support arms 61, which are distributed in a star shape evenly over the circumference of the unit, with their inner ends in the region of the outlet nozzle firmly connected to the unit and with their outer ends attached to the classifier housing.
  • the outlet connection 57 is surrounded by a conical ring housing 62, the lower, larger outer diameter of which is at least approximately that Diameter of the outlet chamber and its upper, smaller outer diameter corresponds at least approximately to the diameter of the classifying wheel.
  • the support arms 61 end on the conical wall of the ring housing 62 and are firmly connected to this wall, which in turn is part of the structural unit comprising the outlet connector 57 and the outlet chamber 58.
  • the support arms 61 and the ring housing 62 are parts of a purge air device, the purge air preventing the ingress of matter from the interior of the view space housing 46 into the gap between the view wheel or its lower cover plate 2 and outlet connection 57.
  • the support arms 61 are designed as tubes, their outer end sections are led through the wall of the classifier housing and are connected via a suction filter 63 to a purge air source.
  • the ring housing 62 is closed at the top by a perforated plate 64 and the gap itself can be adjustable by an axially adjustable ring disk in the area between the perforated plate 64 and the lower cover disk 2 of the sight wheel 1, 2, 3.
  • the outlet from the outlet chamber 58 is formed by a tube 65, which is guided into the view chamber housing 46 from the outside and is connected to the outlet chamber 58 in a tangential arrangement.
  • a deflecting cone 66 serves to clad the opening of the fine material discharge pipe 65 to the outlet chamber 58.
  • the visible air inlet spiral 67 and the coarse material discharge 68 are assigned to the partial housing 47 in a horizontal arrangement.
  • the direction of rotation of the sight air inlet spiral 67 is opposite to the direction of rotation of the sight wheel.
  • the coarse material discharge 68 is removably assigned to the partial housing 47, a flange 69 being assigned to the lower end of the partial housing 47 and a flange 70 being assigned to the upper end of the coarse material discharge 61, and both flanges are in turn releasably connected to one another by known means when the classifier is ready for operation.
  • the dispersion zone to be designed is designated 71.
  • Machined (chamfered) flanges on the inside edge for a clean flow and a simple lining are marked with 72.
  • an interchangeable protective tube 73 is placed as a wear part on the inner wall of the outlet connector 57 and a corresponding interchangeable protective tube 74 can be placed on the inner wall of the outlet chamber 58.
  • classifying air is introduced via the classifying air inlet spiral 67 into the classifier under a pressure drop and at an appropriately selected entry speed.
  • the classifying air rises spirally upwards into the region of the classifying wheel 1-3.
  • the "product" consisting of solid particles of different masses is fed into the classifier housing via the product feed port 56.
  • the coarse material comes from this product, i.e. the proportion of particles with greater mass against the classifying air in the area of the coarse material discharge 68 and is made available for further processing.
  • the fines i.e.
  • the particle fraction with a lower mass is mixed with the classifying air, reaches radially from the outside inwards through the classifying wheel into the outlet port 57, into the outlet chamber 58 and finally via the fine material outlet pipe 65 into the fine material outlet, and from there into a filter in which air and Fines are separated from each other.
  • Coarser fine material components are thrown radially out of the classifying wheel and mixed with the coarse material in order to leave the housing with the coarse material or to rotate in the classifier housing until it has become a fine material of such a grain that it is discharged with the classifying air.
  • the classifier can in turn be well maintained by dividing the classifier housing in the manner described and assigning the classifier components to the individual partial housings, and components which have become defective can be replaced with relatively little effort and within short maintenance times.
  • FIG. 3 While the sight wheel with the two cover disks 1, 2 and the blade ring 3 arranged between them is shown in the overall arrangements according to FIG. 1, in a known, conventional form with parallel and parallel-area cover disks, the sight wheel is shown in FIG. 3 shown for the air classifier designed according to the invention.
  • the outflow-side cover plate 1 is still flat and is arranged in a plane which is perpendicular to the axis of rotation 4 of the classifying wheel and the longitudinal axis of the classifier, regardless of whether the axis of rotation and longitudinal axis 4 is vertical or horizontal. It concentrically surrounds the outlet nozzle 5. From the cover disk 1 on the outflow side, the blades 3 are directed from there toward the second cover disk 2. The blades 3 are connected to both cover disks 1, 2.
  • the lower cover plate 2 is now conical, in contrast to the prior art, and was preferably such that the distance between the second cover plate 2 and the outflow-side cover plate 1 from the rim of the blades 3 increases, preferably again continuously and preferably so that the area of the flow through the cylinder jacket remains constant for each radius between the blade outlet edges and outlet nozzle 5.
  • the outflow velocity which decreases due to the decreasing radius in known solutions, remains constant with this solution.
  • the classifying wheel 1 to 3 can be configured as shown in FIG. 3 both in the classifier design according to FIG. 1 and in the classifier design according to FIG. 2 requires no special explanation. It is only to be considered that in the case of the classifier according to FIG. 1, the classifying wheel is installed as shown in FIG. 3 ("outflow-side, upper cover plate” is class 1), while in the classifier according to FIG. 2 the classifying wheel is compared to the illustration 3 is installed rotated by 180 (the "outflow-side cover plate” 1 is the lower cover plate in the installed state).
  • connection between the downstream cover plate (upper cover plate 1 in FIG. 1 or lower cover plate 2 in FIG. 2) and outlet connection 18 (FIG. 1) or 20 (FIG. 2) also in the classifier design according to FIG 2 can be designed as shown in the classifier arrangement shown in FIG. 1, one has to imagine that the outlet connection 57 and the outlet chamber 58 are connected in a rotationally fixed manner to the lower cover plate 2 of the classifier wheel and the arms 61 are removed from the ring -housing 62 are spaced so that rotational movements of the outlet nozzle 57 and the outlet chamber 58 are possible together with the classifying wheel 1-3, whereby a ring bearing can have a centering function.
  • the structural connection between the outlet chamber 58 and the fine material discharge pipe 65 must be removed without impairing the flow medium transfer.
  • FIG. 1 belongs to FIG. 4, which shows this area larger.
  • the outlet connection 5 initially opens as in FIG. 1 into the tube section 18, which, however, still has a clear, chamber-like cross-sectional widening in the region of the bearing 20.
EP91112707A 1990-08-01 1991-07-29 Trieur pneumatique de préférence vertical Expired - Lifetime EP0472930B1 (fr)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE4024440A DE4024440A1 (de) 1990-08-01 1990-08-01 Vertikaler windsichter
DE4024440 1990-08-01
DE4025247 1990-08-09
DE4025247A DE4025247A1 (de) 1990-08-09 1990-08-09 Windsichter
US07/900,310 US5244481A (en) 1990-08-01 1992-06-18 Preferably vertical air separator

Publications (3)

Publication Number Publication Date
EP0472930A2 true EP0472930A2 (fr) 1992-03-04
EP0472930A3 EP0472930A3 (en) 1992-10-21
EP0472930B1 EP0472930B1 (fr) 1996-10-16

Family

ID=27201521

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91112707A Expired - Lifetime EP0472930B1 (fr) 1990-08-01 1991-07-29 Trieur pneumatique de préférence vertical

Country Status (6)

Country Link
US (1) US5252110A (fr)
EP (1) EP0472930B1 (fr)
JP (1) JP3326188B2 (fr)
AT (1) ATE144169T1 (fr)
DE (1) DE59108284D1 (fr)
ES (1) ES2093052T3 (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0691159A1 (fr) * 1994-07-06 1996-01-10 Loesche Gmbh Séparateur pour broyeurs
CN1054318C (zh) * 1994-11-23 2000-07-12 李俊治 气流分级机
WO2007131502A1 (fr) * 2006-05-17 2007-11-22 Netzsch-Condux Mahltechnik Gmbh Procédé de production de très fines particules au moyen d'un broyeur à jet fluide
WO2008046403A1 (fr) * 2006-10-16 2008-04-24 Netzsch-Condux Mahltechnik Gmbh Procédé de production de particules extrêmement fines, pulvérisateur à jet approprié, séparateur pneumatique et procédé d'exploitation correspondant
WO2008046404A1 (fr) * 2006-10-16 2008-04-24 Netzsch-Condux Mahltechnik Gmbh Procédé de production de particules extrêmement fines, pulvérisateur à jet approprié, séparateur pneumatique et procédé d'exploitation correspondant
EP2218703A1 (fr) 2009-02-13 2010-08-18 Evonik Degussa GmbH Matériau isolant thermique comprenant de la silice précipitée
US8177149B2 (en) 2006-04-13 2012-05-15 Roland Nied Method for the production of very fine particles by means of a jet mill
US8864056B2 (en) 2009-09-29 2014-10-21 Evonik Degussa Gmbh Low-pressure milling process

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006048850A1 (de) * 2006-10-16 2008-04-17 Evonik Degussa Gmbh Amorphe submicron Partikel
DE102007052269A1 (de) 2007-11-02 2009-05-07 Evonik Degussa Gmbh Fällungskieselsäuren für lagerstabile RTV-1 Siliconkautschukformulierungen ohne Stabilisator
DE102017209874A1 (de) 2017-06-12 2018-12-13 Evonik Degussa Gmbh Verfahren zur Herstellung von wachsbeschichteter Kieselsäure
CN110479593A (zh) * 2019-09-05 2019-11-22 贵州省机电研究设计院 一种茶叶风选设备

Citations (9)

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Publication number Priority date Publication date Assignee Title
US2968401A (en) * 1956-09-05 1961-01-17 American Marietta Co Air classifier
US3237766A (en) * 1960-10-21 1966-03-01 Ass Portland Cement Mechanical air classifier
GB1075005A (en) * 1964-12-11 1967-07-05 Ass Portland Cement Improvements in or relating to centrifugal air classifiers
DE1507706A1 (de) * 1966-01-11 1969-07-17 Isler Dipl Ing Walter Streusichter mit Umluftgeblaese
EP0159766A2 (fr) * 1984-03-13 1985-10-30 Hosokawa Micron International Inc. Appareil pour le tri de particules
EP0195240A2 (fr) * 1985-03-13 1986-09-24 Alpine Aktiengesellschaft Trieur pneumatique avec roue de tirage résistant à l'usure
DE3638915A1 (de) * 1985-12-31 1987-07-02 Thaelmann Schwermaschbau Veb Zentrifugalwindsichter
DE3814458A1 (de) * 1988-04-28 1989-11-09 Krupp Polysius Ag Windsichter
EP0369399A2 (fr) * 1988-11-17 1990-05-23 Roland Dr.-Ing. Nied Séparateur pneumatique

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US978450A (en) * 1909-10-12 1910-12-13 Jacobus J Homans Apparatus for separating scum and precipitates from sugar-juice.
US1847648A (en) * 1929-05-20 1932-03-01 Harkom John Frederick Foam breaker
US2478466A (en) * 1946-01-23 1949-08-09 Francis J Dohrer Air cleaner
US4198218A (en) * 1979-03-23 1980-04-15 Kobe, Inc. Gas separation apparatus
DE3712136C1 (de) * 1987-04-10 1988-08-04 Omya Gmbh Zentrifugalkraftsichter
FR2625925B1 (fr) * 1988-01-18 1991-11-15 Onoda Cement Co Ltd Dispositif de triage de poudre

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2968401A (en) * 1956-09-05 1961-01-17 American Marietta Co Air classifier
US3237766A (en) * 1960-10-21 1966-03-01 Ass Portland Cement Mechanical air classifier
GB1075005A (en) * 1964-12-11 1967-07-05 Ass Portland Cement Improvements in or relating to centrifugal air classifiers
DE1507706A1 (de) * 1966-01-11 1969-07-17 Isler Dipl Ing Walter Streusichter mit Umluftgeblaese
EP0159766A2 (fr) * 1984-03-13 1985-10-30 Hosokawa Micron International Inc. Appareil pour le tri de particules
EP0195240A2 (fr) * 1985-03-13 1986-09-24 Alpine Aktiengesellschaft Trieur pneumatique avec roue de tirage résistant à l'usure
DE3638915A1 (de) * 1985-12-31 1987-07-02 Thaelmann Schwermaschbau Veb Zentrifugalwindsichter
DE3814458A1 (de) * 1988-04-28 1989-11-09 Krupp Polysius Ag Windsichter
EP0369399A2 (fr) * 1988-11-17 1990-05-23 Roland Dr.-Ing. Nied Séparateur pneumatique

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0691159A1 (fr) * 1994-07-06 1996-01-10 Loesche Gmbh Séparateur pour broyeurs
CN1054318C (zh) * 1994-11-23 2000-07-12 李俊治 气流分级机
US8177149B2 (en) 2006-04-13 2012-05-15 Roland Nied Method for the production of very fine particles by means of a jet mill
US8047458B2 (en) 2006-05-17 2011-11-01 Roland Nied Method for producing very fine particles by means of a jet mill
WO2007131502A1 (fr) * 2006-05-17 2007-11-22 Netzsch-Condux Mahltechnik Gmbh Procédé de production de très fines particules au moyen d'un broyeur à jet fluide
US8074907B2 (en) 2006-10-16 2011-12-13 Roland Nied Method for generating finest particles and jet mill therefor as well as classifier and operating method thereof
US7866582B2 (en) 2006-10-16 2011-01-11 Netzsch-Condux Mahltechnik Gmbh Method for generating finest particles and jet mill therefor as well as classifier and operating method thereof
WO2008046404A1 (fr) * 2006-10-16 2008-04-24 Netzsch-Condux Mahltechnik Gmbh Procédé de production de particules extrêmement fines, pulvérisateur à jet approprié, séparateur pneumatique et procédé d'exploitation correspondant
WO2008046403A1 (fr) * 2006-10-16 2008-04-24 Netzsch-Condux Mahltechnik Gmbh Procédé de production de particules extrêmement fines, pulvérisateur à jet approprié, séparateur pneumatique et procédé d'exploitation correspondant
EP2959975A1 (fr) * 2006-10-16 2015-12-30 Nied, Roland, Dr.-Ing. Procede de production de particules fines a l'aide d'un broyeur a jet et broyeur a jet associe
WO2010091921A2 (fr) 2009-02-13 2010-08-19 Evonik Degussa Gmbh Matériau d'isolation thermique comprenant de la silice précipitée
EP2218703A1 (fr) 2009-02-13 2010-08-18 Evonik Degussa GmbH Matériau isolant thermique comprenant de la silice précipitée
US8864056B2 (en) 2009-09-29 2014-10-21 Evonik Degussa Gmbh Low-pressure milling process

Also Published As

Publication number Publication date
EP0472930A3 (en) 1992-10-21
US5252110A (en) 1993-10-12
ATE144169T1 (de) 1996-11-15
JPH04227092A (ja) 1992-08-17
ES2093052T3 (es) 1996-12-16
EP0472930B1 (fr) 1996-10-16
DE59108284D1 (de) 1996-11-21
JP3326188B2 (ja) 2002-09-17

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