EP0288505B2 - Verfahren zum herstellen von treibladungspulver - Google Patents

Verfahren zum herstellen von treibladungspulver Download PDF

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Publication number
EP0288505B2
EP0288505B2 EP87906819A EP87906819A EP0288505B2 EP 0288505 B2 EP0288505 B2 EP 0288505B2 EP 87906819 A EP87906819 A EP 87906819A EP 87906819 A EP87906819 A EP 87906819A EP 0288505 B2 EP0288505 B2 EP 0288505B2
Authority
EP
European Patent Office
Prior art keywords
powder
mass
roller
gelatinised
extruder
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
Application number
EP87906819A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0288505A1 (de
EP0288505B1 (de
Inventor
Günther NIEDERMEIER
Helmut Pausch
Wolfgang Miehling
Jürgen KNOBLOCH
Wolfgang Helmich
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.)
WNC Nitrochemie GmbH
Nitrochemie Aschau GmbH
Original Assignee
WNC Nitrochemie GmbH
Nitrochemie Aschau GmbH
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6311878&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0288505(B2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by WNC Nitrochemie GmbH, Nitrochemie Aschau GmbH filed Critical WNC Nitrochemie GmbH
Priority to AT87906819T priority Critical patent/ATE73436T1/de
Publication of EP0288505A1 publication Critical patent/EP0288505A1/de
Application granted granted Critical
Publication of EP0288505B1 publication Critical patent/EP0288505B1/de
Publication of EP0288505B2 publication Critical patent/EP0288505B2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C06—EXPLOSIVES; MATCHES
    • C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
    • C06B21/00—Apparatus or methods for working-up explosives, e.g. forming, cutting, drying
    • C—CHEMISTRY; METALLURGY
    • C06—EXPLOSIVES; MATCHES
    • C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
    • C06B21/00—Apparatus or methods for working-up explosives, e.g. forming, cutting, drying
    • C06B21/0033—Shaping the mixture
    • C06B21/0075—Shaping the mixture by extrusion
    • C—CHEMISTRY; METALLURGY
    • C06—EXPLOSIVES; MATCHES
    • C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
    • C06B21/00—Apparatus or methods for working-up explosives, e.g. forming, cutting, drying
    • C06B21/0033—Shaping the mixture
    • C06B21/0041—Shaping the mixture by compression

Definitions

  • the invention relates to a method for producing propellant powder, in particular dibasic POL powder, in which moist, in particular water-moist powder raw material by kneading at increased Temperature is homogenized and gelatinized, then the gelatinized mass and then the granulated Granules are pressed into powder strands by cutting and, if necessary, a final treatment to be processed into the finished powder.
  • the kneading elements contains.
  • the pressing process may even be seamless within the same extruder connect.
  • the raw powder mass is thus converted into powder strands in one go.
  • it is difficult to feed the extruder in the correct dosage in particular with water-moist raw material.
  • the powder mass is high when kneading in the extruder in an enclosed space is exposed to thermal and mechanical stress. This means a significant security risk. In the event of spontaneous combustion, an explosion inevitably occurs.
  • the invention has for its object to provide a method of the type mentioned To indicate which is carried out continuously on the one hand, but on the other hand in a very reliable manner leaves.
  • this object is achieved according to the invention in that that an open, friction-operated shear roller is used for kneading, in the area of one
  • the powder raw mass is continuously added to the end of the shear roller and at the other end of the one of the two rollers of the shear roller continuously removes a layer of the gelatinized mass; advantageous embodiments of this method emerge from the subclaims.
  • an open shear roller known per se is used for kneading used.
  • the kneading process runs continuously on this.
  • the raw powder mass is in the range of one End of the shear roller continuously added and then gradually to the other in the course of kneading Front end of the shear roller transported. This creates a shear roller on one of the two rollers Fur that is on the other end e.g. continuously removed by continuously cutting off a strip can be. Since the shear roller is open, the powder mass can ignite in the event of self-ignition at most to burn the fur, but not to explode.
  • the granulation process is carried out directly after the kneading process connect. This can e.g. happen in such a way that by means of a pelletizing head at the decrease end of the The shear roller is punched out of the incoming fur granulate and transported away.
  • the resulting granulate can be entered continuously in this. Then you have a production that goes from the addition of the raw powder mass to the creation of the powder strands entirely runs continuously. Since there is no kneading with its high thermal in the extruder used for the pressing and mechanical stress on the powder mass must take place or not take place there should be no unusual security problems here either. It is particularly favorable here that the The resulting granulate is fed directly to the extruder from the shear roller while it is still warm can. Since no long warm-up zones are then necessary in the extruder, this can be very short.
  • propellant powder can be produced in a practically ideal manner.
  • the process can run completely continuously, can be remotely controlled and monitored in the implementation, is far above average, also because there is only one relative on the shear roller small amount of product, and finally leads to a particularly high powder quality, in particular in terms of stability.
  • the known shear roller or shear roller assembly 1 comprises two horizontally arranged side by side Rollers 2 and 3, which are driven in opposite directions in the direction of arrows 4.
  • Each roller 2 and 3 has its own drive, which allows a stepless speed control, so that working with friction over the entire speed range is possible.
  • the rear roller 2 in the figure is set hydraulically against the front roller 3.
  • the nip is adjustable via the front roller 3 to a width between 0.5 and 5 mm.
  • Both rollers 2 and 3 can by means of a heat transfer medium from the inside to a temperature between 20 and 120 ° C.
  • the rollers 2 and 3 are each provided with spiral shear grooves 5, which are product-specific Have geometry that is expressed in the groove width, groove depth, pitch angle and number of shear grooves is coming.
  • the scissor grooves 5 are designed so that the processed product continuously from that in the Figure front end, the feed end 6, is transported to the rear delivery end 7.
  • a metering unit 9 is arranged, from which water-moist powder raw material for the production of two-base POL powder, which has a moisture content of approx. 30%, placed on the shear roller becomes. There, the raw powder mass is kneaded in the nip. A fur forms on the front roller 3 made of raw powder over the entire length of the roller. The two rollers are opened by means of the heat transfer medium held at an elevated temperature. A kneaded product pool collects above the nip from which the water is squeezed out. Because of the intensive kneading and transport effect of the shear roller 2, 3 shows the start of gelatinization after walking through about a third of the roller length with a gray-white coloring of the powder mass.
  • the earth skin After two thirds of the length of the roller, the earth skin has become already discolored to a dark shade of gray. At the end of delivery 7, the bulk skin is finally gelatinized and appears transparent black.
  • the temperature, the gap width of the nip and thus also the Nip pressure and the speeds of the two rollers 2 and 3 are chosen so that the gelatinized powder fur on Dispensing end still has a residual moisture of approx. 1%.
  • the temperature of the two rolls is typically between 70 and 110 ° C.
  • the temperature of the rear Roller is held a few degrees lower than that of the front one. This will cause the fur to adhere to the front Roller. It is advantageous to heat the two rollers in such a way that there is a temperature gradient in the axial direction results in a drop in temperature towards the end of delivery 7.
  • the temperature difference between the end of the task 6 and end of delivery 7 is chosen so that the fur everywhere at about the same speed is transported further.
  • a typical value for the temperature difference is 30 ° C.
  • the speed of the rollers should be between 30 and 70 rpm, the front roller on which the fur is located being the higher Speed.
  • a suitable steepness of the shear grooves 5 is between 30 to 60 ° relative to the roller axis.
  • the shear grooves have the same slope over the entire length of the shear roller. So it can be advantageous to make the slope of the shear grooves near the feed end 6 smaller than that in the To make near the delivery end 7, so that initially a relatively longer dwell time behind the end of the task to achieve the fur, which allows a good squeezing of the water.
  • the depth of the scissor grooves is expediently between 0.4 and 2.5 mm. Overall, the residence time of the powder bulk should between 3 and 8 minutes on the shear roller.
  • a pelletizing unit below the two rollers 2 and 3 at the discharge end 7, by means of which the gelatinized powder mass continuously coming at the discharge end 7 continuously removed from the roller 3 in one operation and in the same operation is granulated.
  • the still warm granulate 8 falls into the receiving funnel 11 of an extruder 10, in which the granulate is pressed into powder strands by a die 12.
  • the extruder 10 has only one screw conveyor inside 13 and no kneading elements.
  • the extruder is only shown schematically; in practice it can be trade a twin-screw extruder. Those that emerge continuously from the die or shaping nozzle 12 Powder strands are transported in a manner not shown on a treadmill into a cutting room and there continuously cut to the actual powder, which is then optionally subjected to a post-treatment.
  • the extruder should have a length of at least 20 cm and be heatable and coolable.
  • the shear roller 1 There are only 2-3 kg of powder on the shear roller 1. This is very convenient for security.
  • the two rollers 2 and 3 are self-cleaning, so that a quick product change is possible.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Glanulating (AREA)
  • Medicinal Preparation (AREA)
  • Processes Of Treating Macromolecular Substances (AREA)
  • Fodder In General (AREA)
  • Dry Formation Of Fiberboard And The Like (AREA)
  • Formation And Processing Of Food Products (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Detergent Compositions (AREA)
EP87906819A 1986-10-16 1987-10-08 Verfahren zum herstellen von treibladungspulver Expired - Lifetime EP0288505B2 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87906819T ATE73436T1 (de) 1986-10-16 1987-10-08 Verfahren zum herstellen von treibladungspulver.

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE3635296A DE3635296C2 (de) 1986-10-16 1986-10-16 Verfahren zum Herstellen von Treibladungspulver
DE3635296 1986-10-16
PCT/EP1987/000585 WO1988002743A1 (en) 1986-10-16 1987-10-08 Process for manufacturing powder for propulsive charges

Publications (3)

Publication Number Publication Date
EP0288505A1 EP0288505A1 (de) 1988-11-02
EP0288505B1 EP0288505B1 (de) 1992-03-11
EP0288505B2 true EP0288505B2 (de) 1998-06-17

Family

ID=6311878

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87906819A Expired - Lifetime EP0288505B2 (de) 1986-10-16 1987-10-08 Verfahren zum herstellen von treibladungspulver

Country Status (19)

Country Link
US (1) US4963296A (US07014992-20060321-C00032.png)
EP (1) EP0288505B2 (US07014992-20060321-C00032.png)
JP (1) JP2681183B2 (US07014992-20060321-C00032.png)
KR (1) KR960000756B1 (US07014992-20060321-C00032.png)
CN (1) CN1015170B (US07014992-20060321-C00032.png)
AR (1) AR246729A1 (US07014992-20060321-C00032.png)
AU (2) AU8107187A (US07014992-20060321-C00032.png)
BR (1) BR8707506A (US07014992-20060321-C00032.png)
CA (1) CA1304942C (US07014992-20060321-C00032.png)
DE (2) DE3635296C2 (US07014992-20060321-C00032.png)
EG (1) EG20112A (US07014992-20060321-C00032.png)
ES (1) ES2007423A6 (US07014992-20060321-C00032.png)
FI (1) FI92581C (US07014992-20060321-C00032.png)
GR (1) GR871431B (US07014992-20060321-C00032.png)
IL (1) IL83998A (US07014992-20060321-C00032.png)
IN (1) IN169922B (US07014992-20060321-C00032.png)
PT (1) PT85927B (US07014992-20060321-C00032.png)
WO (1) WO1988002743A1 (US07014992-20060321-C00032.png)
ZA (1) ZA877700B (US07014992-20060321-C00032.png)

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DE3838646A1 (de) * 1988-11-15 1990-05-17 Wolff Walsrode Ag Phlegmatisierte nitrocellulosegemische
DE3838645A1 (de) * 1988-11-15 1990-05-17 Wolff Walsrode Ag Verfahren zur herstellung phlegmatisierter nitrocellulosegemische
DE4012294C1 (US07014992-20060321-C00032.png) * 1989-05-11 1991-02-14 Wnc-Nitrochemie Gmbh, 8261 Aschau, De
BR9006751A (pt) * 1989-05-11 1991-08-06 Nitrochemie Gmbh Processo e maquina para preparar pos de carga de propulsao tribasicos
SE465572B (sv) * 1989-06-21 1991-09-30 Nobel Kemi Ab Saett och anordning foer framstaellning av explosiva substanser
US5084218A (en) * 1990-05-24 1992-01-28 Trw Vehicle Safety Systems Inc. Spheronizing process
US5349892A (en) * 1991-11-06 1994-09-27 Alliant Techsystems Inc. Propellant stick kerfing apparatus and method
AU691171B2 (en) * 1993-01-29 1998-05-14 Valspar Corporation, The Coating composition of a hydroxyl-functional block copolymer polyester
DE4402047C2 (de) * 1994-01-25 1995-12-07 Bayern Chemie Gmbh Flugchemie Verfahren zur Herstellung einer gaserzeugenden Masse
FR2723086B1 (fr) * 1994-07-29 1996-09-13 Poudres & Explosifs Ste Nale Procede continu de fabrication sans solvant de produits pyrotechniques composites
HU219501B (hu) * 1994-09-16 2001-04-28 Hagedorn Ag. Eljárás és berendezés képlékenyített cellulóz-nitrát előállítására
FR2749008B1 (fr) * 1996-05-23 1998-06-26 Poudres & Explosifs Ste Nale Procede continu de fabrication sans solvant de produits pyrotechniques composites thermodurcissables
EP1164116B1 (de) * 2000-06-15 2005-01-26 Nitrochemie Wimmis AG Verfahren zur Herstellung eines funktionalen hochenergetischen Materials
US20090208647A1 (en) * 2000-06-15 2009-08-20 Nitrochemie Wimmis Ag Method for producing a funtional, high-energy material
DE10152397B4 (de) * 2001-10-24 2009-08-06 BOWAS AG für Industrievertrieb Herstellung von lösungsmittelfreiem Treibladungspulver
DE102008059740B3 (de) * 2008-12-01 2010-04-29 Bowas AG für Industrieplanung Verfahren zur Herstellung von Explosivstoffen
US8062563B2 (en) * 2009-12-14 2011-11-22 Bowas AG für Industrieplanung Method of manufacturing explosives
EP2332894A1 (de) * 2009-12-14 2011-06-15 Bowas AG für Industrieplanung Verfahren und Herstellung von Explosivstoffen
CN102276370B (zh) * 2010-06-13 2012-11-28 无锡锡东能源科技有限公司 火药螺杆连续成型机
KR101301502B1 (ko) * 2011-03-16 2013-08-29 주식회사 유림기계 톱밥 제조기의 목재 인입장치
CN103483113B (zh) * 2013-08-28 2016-06-22 辽宁天亿机械有限公司 双出料压片机火药专用强迫加料机构
CN103524276B (zh) * 2013-09-26 2016-01-20 中煤科工集团淮北爆破技术研究院有限公司 用于乳化炸药基质的敞开式冷却装置
CN103980071A (zh) * 2014-05-06 2014-08-13 西安近代化学研究所 一种用于炸药捏合碾片的滚筒装置
CN104016818B (zh) * 2014-05-29 2017-04-05 山东大学 一种多功能乳化炸药切割装置及其方法
CN104950056B (zh) * 2015-07-14 2017-03-01 西安近代化学研究所 一种叠氮硝胺吸收药样品制备方法
RU2606418C1 (ru) * 2015-07-30 2017-01-10 Валерий Гургенович Джангирян Способ получения тонкосводного пороха для патронов стрелкового оружия и специального назначения

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DE2461646C2 (de) * 1974-12-27 1984-01-05 Dynamit Nobel Ag, 5210 Troisdorf Verfahren zur Herstellung von Treibladungspulvern
FR2325491A1 (fr) * 1975-09-25 1977-04-22 Poudres & Explosifs Ste Nale Procede de boudinage des compositions pyrotechniques, et boudineuse a vis
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Also Published As

Publication number Publication date
PT85927A (pt) 1988-11-30
CN87106808A (zh) 1988-04-27
DE3635296C2 (de) 1995-12-21
KR960000756B1 (ko) 1996-01-12
FI882858A0 (fi) 1988-06-15
JP2681183B2 (ja) 1997-11-26
WO1988002743A1 (en) 1988-04-21
EP0288505A1 (de) 1988-11-02
ZA877700B (en) 1988-04-19
AR246729A1 (es) 1994-09-30
EG20112A (en) 1997-07-31
FI92581C (fi) 1994-12-12
IL83998A0 (en) 1988-02-29
CA1304942C (en) 1992-07-14
JPH01501140A (ja) 1989-04-20
DE3777399D1 (de) 1992-04-16
GR871431B (en) 1987-12-14
FI92581B (fi) 1994-08-31
DE3635296A1 (de) 1988-04-28
AU651087B2 (en) 1994-07-14
IN169922B (US07014992-20060321-C00032.png) 1992-01-11
US4963296A (en) 1990-10-16
ES2007423A6 (es) 1989-06-16
IL83998A (en) 1991-12-15
BR8707506A (pt) 1989-02-21
PT85927B (pt) 1993-07-30
AU7275391A (en) 1991-07-11
KR880701695A (ko) 1988-11-04
AU8107187A (en) 1988-05-06
EP0288505B1 (de) 1992-03-11
FI882858A (fi) 1988-06-15
CN1015170B (zh) 1991-12-25

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