EP0180976B1 - Broyeur agitateur, en particulier broyeur agitateur à billes - Google Patents
Broyeur agitateur, en particulier broyeur agitateur à billes Download PDFInfo
- Publication number
- EP0180976B1 EP0180976B1 EP85114116A EP85114116A EP0180976B1 EP 0180976 B1 EP0180976 B1 EP 0180976B1 EP 85114116 A EP85114116 A EP 85114116A EP 85114116 A EP85114116 A EP 85114116A EP 0180976 B1 EP0180976 B1 EP 0180976B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- agitator
- air
- outlet
- mill
- housing
- 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.)
- Expired - Lifetime
Links
- 239000000463 material Substances 0.000 claims abstract description 17
- 238000010276 construction Methods 0.000 claims 1
- 238000003756 stirring Methods 0.000 description 15
- 238000001816 cooling Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 5
- 239000002245 particle Substances 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 239000011362 coarse particle Substances 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 238000013021 overheating Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- QNRATNLHPGXHMA-XZHTYLCXSA-N (r)-(6-ethoxyquinolin-4-yl)-[(2s,4s,5r)-5-ethyl-1-azabicyclo[2.2.2]octan-2-yl]methanol;hydrochloride Chemical compound Cl.C([C@H]([C@H](C1)CC)C2)CN1[C@@H]2[C@H](O)C1=CC=NC2=CC=C(OCC)C=C21 QNRATNLHPGXHMA-XZHTYLCXSA-N 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- 230000004323 axial length Effects 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000001143 conditioned effect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000007717 exclusion Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Images
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
-
- 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
- B02C2017/165—Mills in which a fixed container houses stirring means tumbling the charge with stirring means comprising more than one agitator
Definitions
- the invention relates to an agitator mill, in particular an agitator ball mill according to the preamble of claim 1.
- a mill is already known from DE-A-1 757 942.
- the inlet is located in or near one end of the essentially cylindrical housing or grinding container and the outlet is in or near the opposite end wall.
- Pipe sockets are provided as the inlet and outlet.
- the invention has for its object to provide a device of the type mentioned, which has a relatively large throughput with a small, compact design with good grain distribution in the outlet.
- the solution to this problem is specified in the characterizing part of claim 1.
- the outlet is therefore provided in the upper housing wall.
- a relatively large space is available here.
- the outlet expediently extends over essentially the entire length and width of the upper housing wall.
- a large air flow can be passed through the large outlet at a relatively low speed, so that a correspondingly large cooling of the mill and the ground material is achieved. Thanks to the relatively small, even flow in the large-area outlet, you get a relatively even fine material with a uniform grain distribution.
- This classifying effect in the outlet can be increased by means of a deflecting grille made of inclined slats in the outlet, which adhere very coarse coarse particles (so-called "spray particles”) and above all the grinding media.
- a further improvement is achieved in that the inlet extends parallel to the (at least one) stirring shaft, essentially over the entire length of the stirring shaft (claim 5).
- a large throughput corresponds to the large inlet, since the inlet extends over the entire length of the mill, the entire volume is used evenly.
- the ground material is expediently introduced (blown in) into the mill with air, that is to say the inlet is designed as a ground material air inlet. At the same time as the regrind, the air is distributed evenly over the entire length of the mill, which is thus cooled evenly; local overheating is avoided.
- the agitator shaft can be hollow (claim 8), so that air is sucked in from the outside through the plane shaft and let into the mill for the purpose of uniform cooling.
- the stirring elements seated on the stirring shaft can be hollow and can be provided with at least one outlet for air (claim 9).
- the air is distributed particularly evenly over the entire grinding bed - the cooling is correspondingly uniform and, in particular, the finer particles of the ground material are automatically discharged to the outlet. This reduces the average residence time; the energy expenditure, the stress caused by an increase in temperature are reduced, the throughput is increased.
- a further embodiment of the invention provides a plurality of agitator shafts next to one another, preferably two rows of three agitator shafts each (claims 6 and 7). Accordingly, the throughput is increased - with a very compact design or small space requirement.
- the air introduced into the mill can also be cooled or conditioned; a different gas can be used instead of air.
- the mill according to the invention has an essentially box-shaped, rhombohedron-shaped housing 1 with two vertical end walls 2, 3, the lower wall 4, the upper wall 5 and two inclined ones Side walls 6, 7 on. The edges between the inclined side walls and the bottom or top wall are rounded.
- this cross-sectionally rhombic housing FIG. 1
- six agitator shafts 8 with agitating elements 9 are arranged, in two rows with three shafts each next to one another.
- the orbits of the agitator arms overlap; the stirring arms are axially offset accordingly (cf. FIGS. 1 and 2).
- the upper row of agitator shafts is offset by half the axial distance from the lower.
- the inclination of the side walls 6, 7 corresponds to this axial offset.
- the regrind inlet 10 is provided on the inclined longitudinal wall 7 of the mill.
- This inlet 10 is designed as a shaft which extends essentially over the entire axial length of the mill (cf. FIGS. 1 and 2).
- This inlet is provided on the obliquely inclined side wall 7, which forms an angle greater than 90 degrees with the bottom wall 4 inside the mill.
- the outer wall 11 of the shaft is provided parallel to the inclined inner side wall 7 and merges into the bottom wall 4 with a curve 12.
- the inner side wall 7 ends at a distance above the bottom wall 4.
- the outlet 13 is provided in the upper wall 5 of the housing 1 and extends essentially over the entire length and width of the upper housing wall, up to the curved areas; the width of the outlet 13 thus corresponds approximately to the center distance of the outer agitator shafts 8.
- a grid of inclined rods or lamellae 14 is inserted into this large-area outlet opening.
- An intermediate piece 15b leads from the rectangular outlet opening 13 to the cylindrical classifier housing 15.
- the fine material reaches the inside of the classifier impeller 15a in the direction of the flow arrows and is separated from the classifying air as usual by means of a subsequent filter. The coarse material falls back inside the mill and is further crushed there.
- the coarse material gets back into the grinding material inlet 10 via a funnel 32 attached to the sifter housing at the bottom and an inclined pipe 33 or a slide.
- the sifter is arranged correspondingly high above the mill and by means of a pipe piece 34 connected to the outlet 13 or the intermediate piece 15b.
- the shafts 8 are designed as hollow shafts (tubes) and are provided with radial bores 16 in the interior of the mill.
- the agitator arms 9 are also hollow or tubular and are connected to the interior of the agitator shaft 8 via a radial bore.
- the stirring arms 9 have lateral openings 17 and / or an opening 18 at their outer end. Thus the inside of the mill is connected to the outside atmosphere.
- the grinding bed and the mill as a whole are cooled so that there is no overheating.
- This cooling effect makes it possible to arrange a plurality of agitator shafts 8 one above the other in rows.
- the dimensions of the mill in terms of length, width and height are practically unlimited, since the previous limitation no longer applies due to the heating.
- the grinding media and coarse material are retained by the deflector blades 14.
- Each agitator shaft 8 can be driven individually by a separate gear motor 22.
- the single drive is cheaper than a drive by a correspondingly larger motor via a transfer case, as indicated schematically in FIG. 3.
- the end walls 2, 3 are double-walled from an inner wall and an outer wall 2a, 3a together with corresponding peripheral wall parts. Compressed air is introduced into the air chambers 23, 24 thus formed by means of one compressed air connection 25 each. The compressed air constantly flows through the shaft penetrations of the inner end walls 2, 3, which additionally prevents fine material from escaping (FIG. 2).
- the regrind can be fed into the grinding room or agitation room with the exclusion of air or with additional conveying air.
- the peripheral walls - the inclined side walls 6, 7 and the lower wall 4 and upper wall 5 - are constructed with double walls from an inner wall and an outer wall 4a, 5a, 6a, 7a arranged at a distance from this.
- the cavity 27 formed in this way is pressurized with compressed air by a pipe socket attached to the outer wall 6a beatable.
- the inner walls have openings 26 for the passage of air. These air inlet openings 26 are primarily provided in the lower wall 4, but not or less in the upper area of the mill.
- the various possibilities for introducing air into the grinding bed can be used individually or cumulatively. The introduction of air via hollow stirrer shafts and stirrers is most effective.
- valves are used in the mixing arms, which block the air outlet during the upper circulation phase of each mixing arm.
- the air streams emerging from the stirring elements are thus directed essentially downwards and not upwards. This benefits the uniformity of the grinding effect over the entire volume of the mill.
- check valves 28 are installed in the stirring arms 9.
- a seat 29 for a valve ball 30 or similar valve body is provided in each stirring arm.
- the valve seat is arranged radially inside and the valve ball radially outside.
- gravity thus presses the valve ball 30 - against the centrifugal force plus the pressure force of the higher air pressure in the agitator arm 9 - onto the valve seat and thus blocks the air outlet.
- the weight of the valve ball 30 acts in the same direction as the centrifugal force and pressure force, the valve ball is therefore removed from the valve seat and the air flow is released downwards or into the lower area of the mill.
- a compression spring 31 is provided according to FIG. 4, which also limits the valve lift.
Landscapes
- Food Science & Technology (AREA)
- Engineering & Computer Science (AREA)
- Crushing And Grinding (AREA)
- Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Compositions Of Oxide Ceramics (AREA)
- Magnetic Ceramics (AREA)
- Disintegrating Or Milling (AREA)
- Cereal-Derived Products (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
- Processing Of Solid Wastes (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
- Flanged Joints, Insulating Joints, And Other Joints (AREA)
Claims (10)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT85114116T ATE50160T1 (de) | 1984-11-09 | 1985-11-06 | Ruehrwerksmuehle, insb. ruehrwerkskugelmuehle. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19843440993 DE3440993A1 (de) | 1984-11-09 | 1984-11-09 | Ruehrwerksmuehle, insbesondere ruehrwerkskugelmuehle |
DE3440993 | 1984-11-09 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0180976A2 EP0180976A2 (fr) | 1986-05-14 |
EP0180976A3 EP0180976A3 (en) | 1987-11-19 |
EP0180976B1 true EP0180976B1 (fr) | 1990-02-07 |
Family
ID=6249923
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP85114116A Expired - Lifetime EP0180976B1 (fr) | 1984-11-09 | 1985-11-06 | Broyeur agitateur, en particulier broyeur agitateur à billes |
Country Status (15)
Country | Link |
---|---|
US (1) | US4673134A (fr) |
EP (1) | EP0180976B1 (fr) |
JP (1) | JPS61171550A (fr) |
KR (1) | KR900005825B1 (fr) |
CN (1) | CN85107966B (fr) |
AT (1) | ATE50160T1 (fr) |
AU (1) | AU570613B2 (fr) |
CA (1) | CA1275993C (fr) |
DE (2) | DE3440993A1 (fr) |
DK (1) | DK155692C (fr) |
ES (1) | ES8700965A1 (fr) |
FI (1) | FI88267C (fr) |
NO (1) | NO162182C (fr) |
PT (1) | PT81438B (fr) |
ZA (1) | ZA858624B (fr) |
Families Citing this family (36)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3615491A1 (de) * | 1984-11-09 | 1987-11-12 | Omya Gmbh | Ruehrwerkskugelmuehle |
DE3615493A1 (de) * | 1984-11-09 | 1987-11-12 | Omya Gmbh | Ruehrwerkskugelmuehle mit sichtvorrichtung |
US4830289A (en) * | 1987-08-27 | 1989-05-16 | Ube Industries, Ltd. | Centrifugal fluidized grinding apparatus |
JPH01171627A (ja) * | 1987-12-28 | 1989-07-06 | Inoue Seisakusho:Kk | 湿式媒体分散機 |
DE3838981A1 (de) * | 1988-11-18 | 1990-05-23 | Eirich Walter | Ruehrwerkskugelmuehle |
FR2650198B1 (fr) * | 1989-07-26 | 1995-02-17 | Chauveau Jean Marie | Procede et broyeur pour la fabrication d'un produit forme par une suspension de particules solides dans un vehicule gras |
SE9000797L (sv) * | 1990-03-07 | 1991-09-08 | Sala International Ab | Anordning foer malning av mineralprodukter |
US5201473A (en) * | 1991-03-22 | 1993-04-13 | Central Fiber Corporation | Dry material feeder and measuring device |
DE69203643T2 (de) * | 1991-04-23 | 1995-12-21 | Ecc Int Ltd | Trockenzermahlung. |
US5289978A (en) * | 1991-07-08 | 1994-03-01 | Lundquist Lynn C | Apparatus for continuous container label removal |
US5279466A (en) * | 1991-10-10 | 1994-01-18 | Williams Robert M | Isokinetic separator apparatus |
US5236133A (en) * | 1991-12-04 | 1993-08-17 | Lundquist Lynn C | Method of container label removal |
SE469417B (sv) * | 1991-12-20 | 1993-07-05 | Sala International Ab | Saett och anordning foer finmalning av foer filleraendamaal anvaendbara mineral i torrt tillstaand |
JP2566884Y2 (ja) * | 1992-05-27 | 1998-03-30 | 三井鉱山株式会社 | 粉砕機 |
US5301812A (en) * | 1993-04-02 | 1994-04-12 | Ecc International Inc. | Air classifying apparatus with wear reducing deflector |
US5330110A (en) * | 1993-07-12 | 1994-07-19 | Williams Robert M | Apparatus for grinding material to a fineness grade |
ATE212707T1 (de) | 1994-05-06 | 2002-02-15 | Ecc Internat Ltd | Trocknung von suspensionen von materialien |
DE4447321C2 (de) * | 1994-12-31 | 1999-07-22 | Omya Gmbh | Rührwerksmühle für die nasse Feinzerkleinerung, mit Separator zur Zurückhaltung von Mahlperlen |
US5662279A (en) * | 1995-12-05 | 1997-09-02 | Eastman Kodak Company | Process for milling and media separation |
DE19601594C2 (de) * | 1996-01-18 | 1998-07-23 | Fritsch Gmbh | Verfahren und Vorrichtung zum Zerkleinern von Materialien, insbesondere zur Probenvorbereitung für Analysen |
JP2000516533A (ja) * | 1996-11-22 | 2000-12-12 | 東洋インキ製造株式会社 | 分散装置 |
US6000646A (en) * | 1998-03-16 | 1999-12-14 | Ranne; Bethyl H. | Double barrel media mill for grinding and dispersing particulate matter and pigment for paint, coatings, ink and other fluid pigment vehicles |
DE19832769C2 (de) * | 1998-07-22 | 2000-09-28 | Netzsch Erich Holding | Verfahren zum Betreiben einer Rührwerksmühle |
US6158680A (en) * | 1998-09-29 | 2000-12-12 | Ranne; Bill H. | Multi-barrel media mill and method of grinding |
US6196480B1 (en) * | 1999-03-22 | 2001-03-06 | Fukuda Metal Foil & Powder Co., Ltd. | Ball mill, a method for preparing fine metal powder, and fine metal powder prepared by the method |
CN101052470A (zh) * | 2004-08-31 | 2007-10-10 | 麦特索矿物(马塔马塔)有限公司 | 粉碎设备 |
CN100377789C (zh) * | 2006-04-27 | 2008-04-02 | 扬州群友粉体材料科技有限公司 | 大型行星球磨机的集料组件 |
DE102009012743A1 (de) * | 2008-11-26 | 2010-05-27 | Roland Dr. Nied | Feinmühle und Betriebsverfahren dafür |
PL2666562T3 (pl) * | 2012-05-25 | 2014-12-31 | Technofond Giessereihilfsmittel Gmbh | Urządzenie regeneracyjne |
DE102012107005A1 (de) * | 2012-07-31 | 2014-05-22 | Netzsch-Feinmahltechnik Gmbh | Rührwerkskugelmühle |
US9764329B2 (en) * | 2013-01-15 | 2017-09-19 | Aaron Engineered Process Equipment, Inc. | Rotary mill |
CN103418485A (zh) * | 2013-04-27 | 2013-12-04 | 占天义 | 研磨分离器 |
US10376894B2 (en) | 2014-02-14 | 2019-08-13 | Glennon C. Sontag | Grinder |
CN106269145A (zh) * | 2015-05-14 | 2017-01-04 | 浙江金华艾领创科技有限公司 | 一种矿物的高效研磨工艺及设备 |
CN105537057A (zh) * | 2016-02-05 | 2016-05-04 | 江苏三杰新能源有限公司 | 一种电池涂覆材料用匀浆机 |
DE102016121926B4 (de) * | 2016-11-15 | 2019-12-24 | Neuman & Esser Process Technology Gmbh | Mühle |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1956293A (en) * | 1927-02-23 | 1934-04-24 | American Anode Inc | Process of and apparatus for producing liquid dispersions |
DE576946C (de) * | 1927-02-24 | 1933-05-26 | Anode Rubber Co Ltd | Mahlvorrichtung zur Herstellung von Dispersionen in kolloidaler oder nahezu kolloidaler Feinheit |
US2546286A (en) * | 1947-06-28 | 1951-03-27 | Zakel Paul | Rotary beater mill with imperforate concaves, vertical baffled discharge, upper anvil plate, and air and material inlets |
GB825143A (en) * | 1956-09-04 | 1959-12-09 | Union Process Ltd | Improvements in or relating to apparatus and methods for grinding materials |
GB948819A (en) * | 1960-05-02 | 1964-02-05 | United Gas Industries Ltd | Improvements in granulators |
FR86283E (fr) * | 1961-11-03 | 1966-03-30 | ||
DE1207347B (de) * | 1961-12-06 | 1965-12-23 | Roger Joseph Sevin | Maschine zum Dispergieren von Stoffteilchen |
CH477916A (de) * | 1967-07-01 | 1969-09-15 | Vyzk Ustav Organickych Synthes | Einrichtung zum Vermahlen fester Teilchen in trockenem Zustand |
US3682399A (en) * | 1969-03-25 | 1972-08-08 | Vyzk Ustav Organ Syntez | Apparatus for comminuting and dispersing solid particles |
CH566167A5 (fr) * | 1973-09-28 | 1975-09-15 | Bicik Vladislav | |
SU594294A2 (ru) * | 1974-11-05 | 1978-02-25 | Всесоюзный научно-исследовательский институт по креплению скважин и буровым растворам | Бисерна мельница |
DE2546146A1 (de) * | 1975-10-15 | 1977-04-28 | Netzsch Maschinenfabrik | Verfahren zum kontinuierlichen feinmahlen und dispergieren und ruehrwerksmuehle zur durchfuehrung des verfahrens |
DD153331A1 (de) * | 1980-10-02 | 1982-01-06 | Wolfgang Haentzschel | Ruehrwerkskugelmuehle |
JPS57107249A (en) * | 1980-12-25 | 1982-07-03 | Tomio Ino | Grinding cleaning device for surface of granular body |
-
1984
- 1984-11-09 DE DE19843440993 patent/DE3440993A1/de active Granted
-
1985
- 1985-10-16 DK DK474285A patent/DK155692C/da active
- 1985-10-25 AU AU49057/85A patent/AU570613B2/en not_active Ceased
- 1985-10-28 FI FI854203A patent/FI88267C/fi not_active IP Right Cessation
- 1985-11-01 NO NO854372A patent/NO162182C/no unknown
- 1985-11-04 KR KR1019850008216A patent/KR900005825B1/ko not_active IP Right Cessation
- 1985-11-06 DE DE8585114116T patent/DE3575874D1/de not_active Expired - Fee Related
- 1985-11-06 PT PT81438A patent/PT81438B/pt not_active IP Right Cessation
- 1985-11-06 CN CN85107966A patent/CN85107966B/zh not_active Expired
- 1985-11-06 EP EP85114116A patent/EP0180976B1/fr not_active Expired - Lifetime
- 1985-11-06 AT AT85114116T patent/ATE50160T1/de not_active IP Right Cessation
- 1985-11-07 CA CA000494796A patent/CA1275993C/fr not_active Expired - Fee Related
- 1985-11-08 ZA ZA858624A patent/ZA858624B/xx unknown
- 1985-11-08 US US06/796,238 patent/US4673134A/en not_active Expired - Lifetime
- 1985-11-08 ES ES548705A patent/ES8700965A1/es not_active Expired
- 1985-11-09 JP JP60251818A patent/JPS61171550A/ja active Granted
Also Published As
Publication number | Publication date |
---|---|
KR860003851A (ko) | 1986-06-13 |
ATE50160T1 (de) | 1990-02-15 |
NO162182B (no) | 1989-08-14 |
ES548705A0 (es) | 1986-11-16 |
DK155692B (da) | 1989-05-01 |
EP0180976A3 (en) | 1987-11-19 |
DE3440993C2 (fr) | 1987-02-26 |
FI88267C (fi) | 1993-04-26 |
DK474285A (da) | 1986-05-10 |
AU570613B2 (en) | 1988-03-17 |
ES8700965A1 (es) | 1986-11-16 |
FI88267B (fi) | 1993-01-15 |
DK155692C (da) | 1989-09-25 |
PT81438B (pt) | 1987-09-18 |
JPS61171550A (ja) | 1986-08-02 |
CN85107966A (zh) | 1986-05-10 |
AU4905785A (en) | 1986-06-26 |
FI854203L (fi) | 1986-05-10 |
FI854203A0 (fi) | 1985-10-28 |
DE3440993A1 (de) | 1986-05-22 |
DK474285D0 (da) | 1985-10-16 |
NO162182C (no) | 1989-11-22 |
PT81438A (en) | 1985-12-01 |
KR900005825B1 (ko) | 1990-08-13 |
ZA858624B (en) | 1986-08-27 |
JPH0338904B2 (fr) | 1991-06-12 |
DE3575874D1 (de) | 1990-03-15 |
EP0180976A2 (fr) | 1986-05-14 |
US4673134A (en) | 1987-06-16 |
CN85107966B (zh) | 1987-11-25 |
NO854372L (no) | 1986-05-12 |
CA1275993C (fr) | 1990-11-06 |
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