Method to produce composite solid propellant |
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IPC classes for russian patent Method to produce composite solid propellant (RU 2407728):
 Gas-generating fuel for downhole apparatus / 2401254
Gas-generating fuel contains an oxidising agent and fuel. According to the invention, the oxidising agent is ammonium perchlorate and the fuel is a metallic fuel in form of aluminium and a thermoplastic fuel in form of a chlorine-containing thermoplastic polymer or its mixture with a chlorine-containing low-molecular weight compound in ratio of 1:0.1-1:2, with the following ratio of components, wt %: oxidising agent -50.0-79.0, thermoplastic fuel 20.0-40.0, metallic fuel 1.0-10.0. The chlorine-containing thermoplastic polymer is chlorinated polyethylene or polyvinylchloride or chlorinated polyvinylchloride or chlorosulphonated polyethylene. The chlorine-containing low-molecular weight compound is chlorinated paraffin wax or methyl chloroform, or tetrachloroethane or perchloroethylene or dichlorobenzene or hexachloro-p-xylene. The fuel also contains a process additive - calcium or zinc stearate in amount of 0.05-1.0 wt %.
 Gas-generating fuel for downhole apparatus / 2401253
Gas-generating fuel contains an oxidising agent and fuel. The oxidising agent is ammonium perchlorate and the fuel is a thermoplastic fuel in form of a chlorine-containing thermoplastic polymer or its mixture with a chlorine-containing low-molecular weight compound in ratio of 1:0.1-1:2, with the following ratio of components, wt %: oxidising agent 60.0-80.0, thermoplastic fuel 20.0-40.0. The chlorine-containing thermoplastic polymer is chlorinated polyethylene or polyvinylchloride or chlorinated polyvinylchloride or chlorosulphonated polyethylene. The chlorine-containing low-molecular weight compound is chlorinated paraffin wax or methyl chloroform, or tetrachloroethane or perchloroethylene or dichlorobenzene or hexachloro-p-xylene. The fuel also contains a process additive - calcium or zinc stearate in amount of 0.05-1.0 wt %.
 Gas-generating fuel for downhole apparatus / 2395482
Invention relates to solid gas-generating solid fuels. The gas-generating fuel for downhole apparatus contains ammonium perchlorate as an oxidising agent, synthetic hydrocarbon rubber which is plasticised with hydrocarbon oil in mass ratio of 1:1…1:5 as fuel, aluminium, process additives, a vulcanising agent and ammonium chloride as a gas-generating additive.
Method of making mixed solid fuel charge / 2395479
Invention relates to technology of making charges from mixed solid fuel. The method of making a mixed solid fuel charge involves grinding, fractionation and mixing different fractions of an oxidising agent, preparation of a mixture of binder with metallic fuel and additives, preparation of a mixture of hardener components and preparation of a fuel mixture, moulding, polymerisation, pressing and flaw detection of the charge. At the step for preparing a mixture of binder with metallic fuel and additives, rubber - oligomer polyvinyl isoprene urethane with terminal epoxy groups is divided into two portions. One portion of the rubber and a polymer chain extension - aniline is used to prepare a semi-finished product and is mixed with the second portion of the rubber and components of the mixture of binder with additives.
Gas-generating composition for producing breathable gas / 2394801
Invention relates to pyrotechnics. The gas-generating composition for producing breathable gas contains silicon as fuel, cellulose nitrate or sodium metasilicate, or magnesium cement as binder, oxidising agent which forms nitrogen in combustion products, in form of nitrates of alkali or alkali-earth metals or their mixture with potassium perchlorate or ammonium perchlorate in ratio which ensures absence of hydrogen chloride in the combustion products.
 Method of making articles from mixed solid rocket fuel / 2394011
Invention relates to technology of making articles from mixed solid rocket fuel. The method of making articles from mixed solid rocket fuel involves moulding articles into a case through pressure moulding of fuel mass on a continuously running installation with auger unloading, holding the moulded articles under pressure during operation of the auger with simultaneous cooling of the fuel mass in the auger by feeding a heat carrier into the housing of the auger, cutting off the fuel mass in the case using a cutter and press curing. Cooling of fuel mass in the auger feeding heat carrier into the housing of the auger begins 3-20 minutes before the end of moulding the article. After ageing of the moulded article, pressure in the case of the article is established in accordance with a mathematical formula by smoothly varying rotational speed of the auger. Further, without changing the rotational speed of the auger, the cutter is closed and after 0.5-1.0 minutes, rotational speed of the auger is smoothly reduced to zero and the auger is switched off. The stroke speed of the piston of the cutter during its closure is preset at a value not greater than 0.15 m/min.
 Solid fuel low-temperature gas-generating composition / 2393140
Invention relates to solid fuel gas-generating compositions. The solid fuel low-temperature gas-generating composition contains ZV ammonium nitrate, guanylurea dinitramide and methylpolyvinyltetrazole.
 Gas-generating fuel for downhole apparatus / 2393139
Invention relates to gas-generating solid fuels. The gas-generating fuel for downhole apparatus contains ammonium perchlorate as an oxidising agent, synthetic hydrocarbon rubber plasticised with hydrocarbon oil as fuel, lecithin, epoxy resin, ortho-tert-butyl-para-cresol or tertiary butylphenol as a processing additive, paradinitrosobenzene or quinol ether as a curing agent, ammonium chloride as a gas-generating additive. The synthetic hydrocarbon rubber used can be isoprene, butadiene, ethylenepropylene, isoprenedivinyl or butyl rubber and the hydrocarbon oil can be transformer, aviation or industrial oil.
Low-temperature solid propellant / 2389714
Invention relates to making gas-generating low-temperature solid propellants. The low-temperature solid propellant contains ammonium nitrate as an oxidising agent, SKDM-80 rubber as polymer fuel, di-N-oxide-1,3-dinitrile-2,4,6-triethylbenzene as a hardener and dinitrophenoxyethanol as a combustion rate catalyst.
Gas generating composition / 2388737
Invention relates to gas generating compositions for use in various mechanisms working under the effect of compressed gases. The gas generating composition contains 50-60 wt % calcium nitrate, 15-16 wt % melamine and 24-35 wt % sodium bicarbonate.
 Method for destruction of solid propellant charge / 2406069
Invention relates to disposal of solid propellant rocket engine (SPRE) with tightly fixed solid propellant charge, neutralisation of solid propellant (SP) wastes. In proposed method case of rocket engine with charge without covers is placed into tight reservoir, filled with destructive mixture until the change is fully submerged. Pressure from 0.3 to 1.5 MPa is developed, as well as temperature of not lower than 120°C, but not exceeding temperature of thermal decomposition of propellant, and maintained until complete structural destruction of charge. For this purpose destructive mixture is aqueous solution of surfactants and mineral salts. Pressure in reservoir is developed by means of solution injection by piston pump, and temperature - by coolant supply into reservoir jacket.
 Method for manufacturing of ammunition charge / 2405761
Invention refers to defence technology, in particular to ammunition loading. Method includes serial supply of explosive substance (ES) portion into ammunition body and pressing of each one by means of puncheon. Besides ammunition body is arranged in matrix, and prior to supply of each portion of ES, guide bush is installed in ammunition body, and its manufacturing ends by pressing-off of ES briquette in ammunition body. Prior to pressing-off of ES briquette, between it and puncheon, gasket is arranged from compressible material, preferably, cardboard, with tightness of 0-0.015 and thickness of 0.003-0.03 of value of inner diametre of ammunition body in area of gasket placement, and each portion of ES is pressed down to specified density of charge under pressure, value of which is more than tension in lower layer of ES, which occurs during ammunition firing under maximum loads.
 Method of mixing components of explosive composition / 2401825
Invention relates to a method of mixing components of an explosive composition. The method involves batching liquid-viscous components, batching powdered components and mixing them in a vertical planetary mixer. When batching, portions of powdered components are controlled depending on viscosity of liquid-viscous components of the explosive components. When viscosity of liquid-viscous components is equal to 30-100 Pa·s, the ratio of the weight of portions of the powdered components to the weight of the liquid-viscous components is kept between 1:1.5 and 1:2.5, and when viscosity of the liquid-viscous components is over 100 Pa·s, this ratio is kept between 1:3.0 and 1:3.5.
 Method for production of industrial explosives (ie) / 2401178
Invention relates to the field of production of industrial explosives (IE) with application of mobile inventory complex, comprising supply cylinder-conic reservoirs with feeder screws and mixing-charging device, arranged with the possibility of relocation by means of motor or railway transport to the area of blast-hole drilling works. Mixture of two or more components of explosives, including finely ground cured stock of recycled car or tractor tyres, is supplied into vessel of mixing-charging device. Mixture of components is previously mixed by a pair of upper opposite and synchronously rotated screws with their even reciprocal motion. Bottom screw is used to move mixture in opposite direction to produce even mixture of explosives. Produced homogeneous mixture of explosives is supplied with the help of injecting compressed air into wells prepared for blast-hole drilling works or due to dynamic head produced by bottom screw, directly into plastic shells of packaged charges of explosives. Provides for reduced prime-cost of production and continuous manufacturing of explosive, and provides for possibility to manufacture explosive charges directly in area of their application.
 Method for packing of powdery explosive substance / 2399605
Method includes remote installation of bag with explosive substance into tilter container. Prior to pouring of explosive substance into receiving mobile container, one bag of explosive substance is laid onto cradles of two trolleys installed with their wheels onto guides, which are rigidly fixed to platform of hydraulic lift and are arranged in parallel to axes of tilter containers, hydraulic lift platform is raised and fixed. Position of trolley cradles is maintained at the level of tilter containers, but not higher than 10 mm, trolleys are moved and fixed with stops at the distance from 5 to 20 mm between edges of trolley cradles and tilter containers. Pusher drives are switched on remotely, and bags with explosive substances are moved from trolley cradles into tilter containers with the help of stems and disks fixed to drive, at the same time drives are switched off automatically, then drives are switched on for reverse motion, and stems with disks are returned into initial position, with further automatic disconnection of drives, then pneumatic cylinders are used to serially and remotely rotate containers of tilter, bags with explosive substances are emptied into receiving mobile container.
 Method of producing industrial explosive material / 2399604
Method involves preparation of components, successive mixture and grinding in three bead mill - mixers of blasting substance, oxidising agent, flame arrester and then taking the mixture for cartridging. In the first mixer, complete volume of the blasting substance and a partial volume of flame arrester are mixed in ratio of 1:1. The composition is also ground up in the second mixer to defined fineness. The prepared mixture together with deficient components is fed into the third mixer for final mixing and grinding.
 Method of preparing emulsion of water in oil type for emulsion explosive composition and device for its preparation / 2396238
Invention relates to technology of emulsion explosive substances. Method of preparing water in oil type emulsion for emulsion explosive composition includes preparation of water solution of salts of oxidisers and fuel phase, which consists of fuel and emulsifier, and mixing of obtained water solution of salts of oxidisers and obtained fuel phase in static mixer. Water solution of salts of oxidisers is prepared by mechanical mixing, exposure to ultraviolet waves with frequency 18-150 kHz by means of submerged metal waveguides and recirculation of flow through ultrasonic flow disperser with frequency of ultrasonic waves 18-150 kHz. Fuel phase is prepared with flow recirculation. Obtained mixture of water solution of salts of oxidisers and fuel phase is dispersed in ultrasonic flow disperser with frequency of ultrasonic waves 18-150 kHz. Also claimed is device for said method realisation.
 Armored insertion charge of rocket solid propellant / 2395480
Invention relates to armored insertion charges of rocket solid propellants (RSP). Proposed charge represents RSP grain with armor coat on its surface. Said armor coat represents a self-adhesive δ-thick tape based on softened rubber that inhibits ignition of the grain armored surface for preset time of charge ignition. Note here that tape length exceeds grain surface circumference by at least 3δ. Said tape is wrapped around said grain through 360° with rebate joint along its length formed by skewed cuts at angle α, not exceeding 45°, to grain surface.
Method of making mixed solid fuel charge / 2395479
Invention relates to technology of making charges from mixed solid fuel. The method of making a mixed solid fuel charge involves grinding, fractionation and mixing different fractions of an oxidising agent, preparation of a mixture of binder with metallic fuel and additives, preparation of a mixture of hardener components and preparation of a fuel mixture, moulding, polymerisation, pressing and flaw detection of the charge. At the step for preparing a mixture of binder with metallic fuel and additives, rubber - oligomer polyvinyl isoprene urethane with terminal epoxy groups is divided into two portions. One portion of the rubber and a polymer chain extension - aniline is used to prepare a semi-finished product and is mixed with the second portion of the rubber and components of the mixture of binder with additives.
Method of making articles from mixed solid rocket fuel / 2394011
Invention relates to technology of making articles from mixed solid rocket fuel. The method of making articles from mixed solid rocket fuel involves moulding articles into a case through pressure moulding of fuel mass on a continuously running installation with auger unloading, holding the moulded articles under pressure during operation of the auger with simultaneous cooling of the fuel mass in the auger by feeding a heat carrier into the housing of the auger, cutting off the fuel mass in the case using a cutter and press curing. Cooling of fuel mass in the auger feeding heat carrier into the housing of the auger begins 3-20 minutes before the end of moulding the article. After ageing of the moulded article, pressure in the case of the article is established in accordance with a mathematical formula by smoothly varying rotational speed of the auger. Further, without changing the rotational speed of the auger, the cutter is closed and after 0.5-1.0 minutes, rotational speed of the auger is smoothly reduced to zero and the auger is switched off. The stroke speed of the piston of the cutter during its closure is preset at a value not greater than 0.15 m/min.
Method of phlegmatization of blasting powder / 2244699
The invention is dealt with the field of production of blasting powder. The invention offers a method of phlegmatization of blasting powder, in particular, fine-grained pyroxylin blasting powder, spherical blasting powder, obsolete fine-grained pyroxylin blasting powder or obsolete spherical blasting powder. The method of phlegmatization of blasting powder provides for a treatment of the blasting powder by a phlegmatizator in a water medium. For that purpose a reactor is filled up with water, then they load blasting powder, heat up and exercise a one-shot introduction of a phlegmatizating agent made in the form of a water emulsion. In the capacity of the phlegmatizating agent is used dibutyl phthalate or a mix of diphenylamine and dinitrotoluene, or a mix of centralite №1 and dinitrotoluene, or a mix of centralite №2 and dibutyl phthalate. The invention allows to utilize the obsolete blasting powders, to increase safety of process of phlegmatization of the blasting powders, to reduce durations of the process of phlegmatization of the blasting powders, to improve ballistic performances of produced blasting powders.
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FIELD: agriculture. SUBSTANCE: method is realised in mixing plant, consisting of preliminary, upper and lower mixers. Initially excess of liquid-viscous components is dosed into preliminary mixer, including mixing in upper mixer. Then mixing is simultaneously started in preliminary mixer, and liquid-viscous and powdery components are synchronously dosed in amount of 20-40% of upper mixer charge volume. Afterwards dosing and mixing in preliminary mixer are stopped, and components are mixed in upper mixer for 5-10 minutes. Ratio of components mix in upper mixer is corrected by lacking amount of powdery components. Corrected mixture of components is mixed in upper mixer for 10-25 minutes, and synchronous dosing of liquid-viscous and powdery components is restored and mixed serially in preliminary, upper and lower mixers of mixing plant. EFFECT: invention provides for elimination of ingress of non-soaked powdery components in zone of upper mixer auger operation and elimination of fuel mixture chemical composition violation. 1 dwg
The invention relates to a method for preparing a composite solid rocket fuel (SRT) using a mixer consisting of a preliminary upper and lower mixers. There is a method of mixing the components of explosive compositions (patent RF № 2164221)providing for the dispensing of watery-viscous, powder components for auxiliary lines, mixing them in a mixing setting: preliminary, upper and lower (vacuum) mixers in which to prevent Nesmachnyi powder components in the operating area of the augers and security process at the beginning of the mixing components a certain amount of composition (8-12% working download the pre-mixer) mix at the blocked exit hole pre-mixer. The disadvantage of this method is that for highly filled SRTT is not provided, the output of the pre-mixer complete wetting of the powder components watery-viscous components in the first portions of the composition, there is a danger of falling Nesmachnyi powder components in the operating area of the top of the mixer. There is also known a method of manufacturing charges mixed solid rocket fuel on the patent of Russian Federation № 2196760, IPC C06 B 21/00, declared 30.11.1999, published 20.01.2003 g, taken as a prototype. According to the method of preparation SRTT carried out in the mixing system, consisting of the preliminary upper and lower mixers. Initially, in the pre-mixer metered excess of watery-viscous components in the amount of 10-15 wt.% volume loading with subsequent adjustment of the ratio of components in the upper mixer missing quantity of powder components. The method according to the specified invention contains not all the signs for his achievements, including through the formation of high-quality fuel mixture. The prototype disadvantages are that when dosing initially an excess of watery-viscous components in the pre-mixer, and then adjusting the ratio of components in the upper mixer, may be a violation of the chemical composition at the outlet of the mixing installation of penetrations of the non-conforming fuel mixture having an excess of watery-viscous components exiting the top of the mixer, and the emergence of a dangerous situation because of hit Nesmachnyi powder components in the work area of the screw top of the mixer. The technical task of the present invention is preventing Nesmachnyi powder components in the work area of the screw top of the mixer and the exception Nar is the relationship of chemical composition - breakthrough substandard fuel mixture at the outlet of the mixing plant. The technical result is achieved in that in the method of preparation of composite solid rocket fuel, including dosing initially an excess of watery-viscous components in the pre-mixer, and then adjusting the ratio of components in the upper mixer missing quantity of powder components, simultaneous dosing of watery-viscous and powdery components and their mixing consistently in the preliminary, the upper and lower mixers and mixing plants, after dispensing of excess watery-viscous components include first mixing in the upper mixer, then simultaneously in the preliminary mixer includes a mixing and simultaneous dosing of viscous-liquid and powder components in the amount of 20-40% by volume loading of the upper mixer, then stop dosing and a stirring pre-mixer, and before the adjustment of the mixed components in the upper mixer for 5-10 minutes, and after adjustments within 10-25 minutes, and resume synchronous dosing watery-viscous, powder components and their mixing consistently in the preliminary, the upper and lower mixers and mixing plants. In before agemon the way after dosing excess of watery-viscous components in the preliminary mixer it is important to first enable mixing in the upper mixer, then simultaneously turn on the stirring pre-mixer and simultaneous dosing of watery-viscous and powdery components. This eliminates the ingress of the first portions of the fuel mixture components from the pre-mixer zone of the screw top of the mixer and the overshoot of substandard fuel mixture from the top of the mixer at the bottom of the mixer. When working pre-mixer at the same time implemented the processes of mixing and supplying the fuel mixture components in the upper mixer mixing plant in continuous mode. For reliable, stable operation of the mixer and ensure that the quality of mixing of the components must be equal to the amount of components on the input number of them on the mixer output. In the proposed method, this problem is solved by the simultaneous inclusion of mixing in the preliminary mixer and batching. This limit ensures the establishment of emergency situations (driving the mixer with a mixture of components) and variations in chemical composition at the outlet of the mixer. Simultaneous dosing of watery-viscous and powdery components in the amount of 20-40% by volume loading of the upper mixer after completion of the dispensing of excess watery-viscous components is carried out with the aim of creating Optim the selected conditions for receiving and mixing the missing quantity of the powder components in the upper mixer. When quantity is less than 20% of the volume loading of the mixer is not provided, the intensity of mixing due to the insufficient quantity of the fuel mixture in the mixer, when more than 40% of the volume loading of the mixer its free volume above the level of the fuel mixture becomes too small to receive the necessary amount of powder components to adjust the composition. Additional mixing in the upper mixer for 5-10 minutes before adjusting the ratio of components missing quantity of powder components you need for a quality of the fuel mixture by the monotony of distribution components. Mixing time is less than 5 minutes is not enough to obtain a homogeneous distribution of components, more than 10 minutes unnecessarily lengthens the production cycle. After adjusting the component ratio of the missing quantity of powder components are mixed in the upper mixer 10-25 minutes to obtain a homogeneous fuel mixture and exceptions breakthrough unmixed, substandard fuel mixture in the bottom of the mixer and exceptions thus violations of the chemical composition at the outlet of the mixing plant. Mixing time is less than 10 minutes does not provide uniform distribution of components, and more than 25 minutes unreasonably extends about svojstvenny cycle. The drawing shows a diagram of the preparation of composite solid rocket fuel for the proposed method. In the diagram: 1 - dispenser watery-viscous components; 2 - doser powder components; 3 - pre-mixer; 4 - upper mixer; 5 - discharge auger; 6 - lower the mixer; 7 - unloading auger. Preparation SRTT on the proposed method is as follows. To prepare SRTT apply the mixing unit consisting of a pre 3, top 4 and bottom 6 mixers. Initially, in the pre-mixer 3 with the dispenser 1 is metered excess of watery-viscous components in the amount of 10-15 wt.% volume download the pre-mixer 3. After that first include mixing at the top of the mixer 4, and then at the same time stirring pre-mixer 3 and simultaneous dosing of watery-viscous, powder components dispensers 1, 2. Metered components in the amount of 20-40% by volume of the boot the top of the mixer 4. Then stop dosing and mixing in the preliminary mixer 3. The components additionally stirred at the top of the mixer 4 for 5-10 minutes and are adjusting the ratio of components in the upper mixer 4 by dispensing the missing quantity of the powdered components of the dose is a PR 2. Then adjusted the mixture components are mixed in the upper mixer 4 for 10-25 minutes and resume synchronous dosing watery-viscous, powder components dispensers 1, 2 and their mixing in the mixing installation, in the preliminary mixer 3, the upper mixer 4 with a discharge screw 5 and the lower mixer 6 with the discharge auger 7. The proposed method for the preparation of composite solid rocket fuel tested with positive results on the BFC "Perm powder plant. Method of preparation of composite solid rocket fuel, including dosing initially an excess of watery-viscous components in the pre-mixer, and then adjusting the ratio of components in the upper mixer missing quantity of powder components, simultaneous dosing of watery-viscous and powdery components and their mixing consistently in the preliminary, the upper and lower mixers and mixing plants, characterized in that after dispensing of excess watery-viscous components initially carry out the mixing at the top of the mixer, then simultaneously in the preliminary mixer carry out mixing and simultaneous dosing of watery-viscous and powdery components in the amount of 20-40% by volume of the boot the top of the mixer, then stop dosing and mixing in the preliminary mixer and before the adjustment of the mixed components in the upper mixer for 5-10 minutes, and after adjustments within 10-25 min and resume synchronous dosing watery-viscous, powder components and their mixing consistently in the preliminary, the upper and lower mixers and mixing plants.
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