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WO2003035580A2 - Fabrication d'une charge propulsive sous forme pulverulente et exempte de solvants - Google Patents

Fabrication d'une charge propulsive sous forme pulverulente et exempte de solvants Download PDF

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Publication number
WO2003035580A2
WO2003035580A2 PCT/EP2002/011849 EP0211849W WO03035580A2 WO 2003035580 A2 WO2003035580 A2 WO 2003035580A2 EP 0211849 W EP0211849 W EP 0211849W WO 03035580 A2 WO03035580 A2 WO 03035580A2
Authority
WO
WIPO (PCT)
Prior art keywords
range
block
explosive
press
temperature
Prior art date
Application number
PCT/EP2002/011849
Other languages
German (de)
English (en)
Other versions
WO2003035580A3 (fr
Inventor
Gerhard Huber
Original Assignee
BOWAS AG für Industrievertrieb
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
Application filed by BOWAS AG für Industrievertrieb filed Critical BOWAS AG für Industrievertrieb
Priority to EP02782985A priority Critical patent/EP1472198B1/fr
Priority to AT02782985T priority patent/ATE497941T1/de
Priority to DE50214908T priority patent/DE50214908D1/de
Publication of WO2003035580A2 publication Critical patent/WO2003035580A2/fr
Publication of WO2003035580A3 publication Critical patent/WO2003035580A3/fr

Links

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
    • C06B21/0033—Shaping the mixture
    • C06B21/0041—Shaping the mixture by compression

Definitions

  • the invention relates to a method for producing explosives according to the preamble of patent claim 1.
  • explosive includes explosive and / or explosive, in particular solid, liquid and gelatinous substances and
  • Explosives, and in particular propellant powder, are required for numerous applications, such as in blasting technology or for driving projectiles.
  • the explosive or the propellant charge is present in a certain form, for example as powder or granules, as a cube or in compact form of different sizes, but is based on the explosiveness of the explosive raw material, for example based on nitrocellulose and / or nitroglycerin , poses a particular problem with regard to the processing of the same.
  • US 4,963,296 and the corresponding EP 0 288 505 B1 and DE 36 35 296 A1 disclose a process for producing propellant charge powder in a solvent-free process in which a water-moist powder raw material is kneaded at an elevated temperature in a shear roller.
  • the raw powder mass is fed continuously, continuously removed as a gelatinized mass at the front end of the shear roller and immediately afterwards continuously granulated.
  • the resulting granulate is then fed continuously to an extruder, by means of which it is pressed into powder strands, which are processed into the finished powder by cutting or another final treatment.
  • this process represents a considerable improvement of the first-mentioned POL process, whereby the processing of the granules in an extruder could not previously be guaranteed in a safe manner, since high mass pressures are generated in the press when the granules are pressed, which is considerable safety-related concerns and problems.
  • the granulate was mixed with original water-moist raw material and only then rolled out into a fur on a roller and processed further. Rolling into a roll and pressing into a desired geometry is carried out using the conventional method already described above.
  • the winding produced has inhomogeneities which are based on differently good or less good gelatinization of the raw materials which have been mixed with one another and have already been dewatered and gelatinized or water-moist. These have a qualitatively negative impact, so that a large part of the propellant powder is still produced by the first-mentioned conventional rolling method.
  • the object of the invention is to develop a method according to EP 0 288 505 B1 such that dewatered and gelatinized granules are simple and inexpensive, while avoiding the above, in particular safety-related problems can be processed into an explosive based on nitric acid esters, and in particular into a solvent-free propellant powder.
  • the object is achieved by a method according to claim 1.
  • the object is achieved by a method in which a desensitized, in particular water-moist, explosive raw material is processed into a granulate by dewatering, gelatinizing and processing the explosive raw material, the granulate being formed into a block immediately after granulation by means of an isostatic press, which is then subsequently formed immediately processed in a conventional manner without problems or stored in a heat container for further processing.
  • a desensitized, in particular water-moist, explosive raw material is processed into a granulate by dewatering, gelatinizing and processing the explosive raw material, the granulate being formed into a block immediately after granulation by means of an isostatic press, which is then subsequently formed immediately processed in a conventional manner without problems or stored in a heat container for further processing.
  • An essential point of the invention is that the granulate is fed to the isostatic press while it is still warm and plastic.
  • warm granules according to the invention takes advantage of the fact that it is easily plastically deformable and tends to flow even without or with a slight application of pressure, so that a pressing process can be carried out in a very gentle manner.
  • an isostatic press is used to generate the pressing pressure, since it presses on a liquid or a plastic one
  • the isostatic press is heated so that a defined temperature and thus plasticity of the
  • Explosive can be adjusted. In this way it is avoided that the material to be pressed cools down and / or hardens prematurely, for example by contact with the wall of the press.
  • the isostatic pressing can be carried out using a wet or dry die technique, the dry die technique being preferred due to shorter cycle times and the possibility of processing smaller quantities. Due to the shorter cycle time, the dry die technology is also well suited for high throughput and large quantities.
  • the multiaxial pressure effect during dry pressing results in a high and almost completely uniform compression behavior, which leads to a very uniform density of the block produced. The productivity and economy of this isostatic pressing process can therefore be assessed as good to very good.
  • the temperature control of the pressure vessel can be carried out by means of a thermostat, for example heating elements, but preferably by means of a temperature-controlled water or oil bath or the like known temperature control devices.
  • the isostatic press is preferably heated so that the isostatic pressing is carried out at a temperature in the range from 30 ° C. to 130 ° C., preferably at a temperature in the range from 50 ° C. to 110 ° C. and particularly preferably in the range of 70 ° C to 95 ° C is carried out.
  • the method according to the invention has the advantage that the generation of heat within the pressed material is practically avoided for block formation due to the extensive avoidance of mutual friction of the granules against one another.
  • the confluent plastic is preferably heated so that the isostatic pressing is carried out at a temperature in the range from 30 ° C. to 130 ° C., preferably at a temperature in the range from 50 ° C. to 110 ° C. and particularly preferably in the range of 70 ° C to 95 ° C is carried out.
  • Pressed material has a smaller surface area than a granulate, which results in lower heat losses and an associated easier temperature control of the pressed material.
  • the above also applies to the explosive block produced.
  • one Reaction surface is drastically reduced, which reduces the risk of unwanted burning.
  • the isostatic pressing is carried out under a pressure which is reduced in comparison with atmospheric pressure, in particular a vacuum.
  • vacuum here encompasses the range from a water jet vacuum to a vapor pressure corresponding to the vapor pressure of the substances used.
  • the vacuum actually applied depends on the explosive mixture used, the remaining water content in the same and the desired quality level of the block. For example, by applying negative pressure, it is possible to draw off any remaining water from the mixture to be pressed and to minimize the risk of air influences in the block.
  • a pressing pressure in the range from 10 ⁇ 10 6 Pa to 50 ⁇ 10 6 Pa, preferably in the range from 25 ⁇ 10 6 Pa to 35 ⁇ 10 6 Pa and particularly preferably in the range of 28, is applied in the isostatic press x 10 6 Pa to 32 x 10 6 Pa applied.
  • the pressure or mass pressure and the resulting density of the compact can be varied within very wide limits, so that, for example, a relatively high water content in the granules means that a higher pressure or a thermodynamically sensitive explosive mixture, a lower pressure can be used.
  • the method according to the invention is therefore versatile for processing a wide variety of explosives and explosive mixtures.
  • the process according to the invention generally relates to the production of single- and double-base powders, as well as to three-base powders with the premise of one
  • nitroguanidine powder and powders of diglycol dinitrate, triglycol dinitrate, methriol dinitrate and butanetriol trinitrate derived from liquid nitric acid esters are also included in the invention.
  • the dewatering, gelatinizing and granulating of the explosive raw material is carried out by means of a shear roller and a granulating device immediately following it at a temperature in the range from 30 ° C to 130 ° C, preferably at a temperature in the range from 50 ° C to 110 ° C and particularly preferred performed in the range of 70 ° C to 95 ° C.
  • the resultant advantage is that the granulate already has a suitable temperature for further processing in the isostatic press when it leaves the granulating device. This means that neither cooling nor additional heating of the warm granulate is necessary for further processing. In addition, maintaining a relatively constant temperature ensures gentle processing of the explosive.
  • the block can be further processed in a conventional manner, for example by means of a hydraulic press.
  • the block produced according to the invention can thus be transferred into a strand and cut or processed in any other way to form a finished propellant charge substrate or powder.
  • an explosive raw material is initially provided, which is optionally prepared by admixing auxiliaries and additives.
  • This explosive raw material is then first dewatered and gelatinized and granulated using a shear roller and a granulating device. This is preferably done at a temperature in the
  • the warm plastic granulate is fed to an isostatic dry pressing device, which is tempered to 90 ° C and using a pressure of 25 x 10 6 Pa and a water jet pump vacuum to one Block pressed.
  • the block is further processed in a conventional manner by means of a hydraulic press, the block becoming one
  • the explosive strand is stretched and then cut.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Powder Metallurgy (AREA)
  • Press Drives And Press Lines (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
  • Press-Shaping Or Shaping Using Conveyers (AREA)
  • Medicinal Preparation (AREA)

Abstract

Procédé de fabrication d'explosifs, en particulier d'une charge propulsive sous forme pulvérulente, à partir d'une matière première d'explosif stabilisée, en particulier humide. Ledit procédé consiste à déshydrater, à gélatiniser et à traiter la matière première pour obtenir un granulat à l'aide d'un cylindre de cisaillement dans un dispositif de granulation, le granulat étant façonné en un bloc à l'aide d'une presse isostatique, immédiatement après la granulation et à l'état chaud. Le traitement ultérieur du bloc est effectué de manière classique, par exemple à l'aide d'une presse hydraulique.
PCT/EP2002/011849 2001-10-24 2002-10-23 Fabrication d'une charge propulsive sous forme pulverulente et exempte de solvants WO2003035580A2 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP02782985A EP1472198B1 (fr) 2001-10-24 2002-10-23 Fabrication d'une charge propulsive sous forme pulverulente et exempte de solvants
AT02782985T ATE497941T1 (de) 2001-10-24 2002-10-23 Herstellung von lösungsmittelfreiem treibladungspulver
DE50214908T DE50214908D1 (de) 2001-10-24 2002-10-23 Herstellung von lösungsmittelfreiem treibladungspulver

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10152397A DE10152397B4 (de) 2001-10-24 2001-10-24 Herstellung von lösungsmittelfreiem Treibladungspulver
DE10152397.1 2001-10-24

Publications (2)

Publication Number Publication Date
WO2003035580A2 true WO2003035580A2 (fr) 2003-05-01
WO2003035580A3 WO2003035580A3 (fr) 2003-12-24

Family

ID=7703524

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2002/011849 WO2003035580A2 (fr) 2001-10-24 2002-10-23 Fabrication d'une charge propulsive sous forme pulverulente et exempte de solvants

Country Status (5)

Country Link
EP (1) EP1472198B1 (fr)
AT (1) ATE497941T1 (fr)
DE (2) DE10152397B4 (fr)
ES (1) ES2363065T3 (fr)
WO (1) WO2003035580A2 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008059740B3 (de) * 2008-12-01 2010-04-29 Bowas AG für Industrieplanung Verfahren zur Herstellung von Explosivstoffen
EP2332894A1 (fr) * 2009-12-14 2011-06-15 Bowas AG für Industrieplanung Procédé et fabrication de matières explosives
US8062563B2 (en) 2009-12-14 2011-11-22 Bowas AG für Industrieplanung Method of manufacturing explosives
RU2606418C1 (ru) * 2015-07-30 2017-01-10 Валерий Гургенович Джангирян Способ получения тонкосводного пороха для патронов стрелкового оружия и специального назначения

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010047530A1 (de) * 2010-10-05 2012-04-05 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Prozess ohne Lösungsmittel (PoL-Prozess) auf Basis DNDA, Nitrozellulose und kristalliner Energieträger
RU2643058C1 (ru) * 2017-05-16 2018-01-30 Валерий Гургенович Джангирян Патрон

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3635296A1 (de) 1986-10-16 1988-04-28 Nitrochemie Gmbh Verfahren zum herstellen von treibladungspulver

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3497578A (en) * 1967-12-13 1970-02-24 Us Navy Method of forming articles to close dimensional tolerances in a hydrostatic press
FR2436120A1 (fr) * 1978-09-12 1980-04-11 Basset Bretagne Loire Dispositif et procede de fabrication d'elements en poudre agglomeree
DE3205152C2 (de) * 1982-02-13 1984-04-12 Mauser-Werke Oberndorf Gmbh, 7238 Oberndorf Treibladung für Hülsenmunition und Verfahren zu ihrer Herstellung
CH673704A5 (fr) * 1987-06-17 1990-03-30 Eidgenoess Munitionsfab Thun
DE59302879D1 (de) * 1992-03-18 1996-07-18 Eidgenoess Munitionsfab Thun Verfahren und Vorrichtung zum quasiisostatischen Pressen von insbesondere thermoplastisch gebundenen Präzisionssprengladungen
CA2326133A1 (fr) * 1998-04-14 1999-11-25 Alliant Techsystems Inc. Propergol simple base depourvu de dinitrotoluene (dnt)

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3635296A1 (de) 1986-10-16 1988-04-28 Nitrochemie Gmbh Verfahren zum herstellen von treibladungspulver
US4963296A (en) 1986-10-16 1990-10-16 Wnc-Nitrochemie Gmbh Process for the preparation of propellant charge powder
EP0288505B1 (fr) 1986-10-16 1992-03-11 Wnc-Nitrochemie Gmbh Procede pour fabriquer de la poudre de charge propulsive

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008059740B3 (de) * 2008-12-01 2010-04-29 Bowas AG für Industrieplanung Verfahren zur Herstellung von Explosivstoffen
EP2332894A1 (fr) * 2009-12-14 2011-06-15 Bowas AG für Industrieplanung Procédé et fabrication de matières explosives
US8062563B2 (en) 2009-12-14 2011-11-22 Bowas AG für Industrieplanung Method of manufacturing explosives
RU2606418C1 (ru) * 2015-07-30 2017-01-10 Валерий Гургенович Джангирян Способ получения тонкосводного пороха для патронов стрелкового оружия и специального назначения

Also Published As

Publication number Publication date
ATE497941T1 (de) 2011-02-15
DE10152397A1 (de) 2003-05-15
DE10152397B4 (de) 2009-08-06
WO2003035580A3 (fr) 2003-12-24
EP1472198B1 (fr) 2011-02-09
EP1472198A2 (fr) 2004-11-03
ES2363065T3 (es) 2011-07-19
DE50214908D1 (de) 2011-03-24

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