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Method of obtaining nitrocellulose In a method of obtaining nitrocellulose by nitration of cellulose with a mixture of nitrogen (V) oxide with 100% nitric acid in a medium of liquid or supercritical carbon dioxide under increased pressure, in accordance with the solution, a nitration process is performed with a weight part of 100% nitric acid in the nitrating mixture from 29% to 47%, nitration modulus 6.4-8.4 and a temperature of 20-50°C for 60-180 min. The process of cellulose nitration is carried out under pressure of 80-300 bars. |
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Invention relates to rocket fuels for liquid, hard fuel and hybrid rocket engines, as well as for extreme reciprocating and turboreactive engines. As an oxidant, fuel contains ammonium dinitramide, boron or beryllium nitrates, and nitrogen pentoxide. A peculiarity of the invention consists in application of high-energy reactions and a gas-containing oxidant. Oxidant gases serve only for formation of a reaction jet. |
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Method of production of spherical powder comprises charging water and nitrocellulose (NC) or NC to a reactor with return waste from previous operations, the previously prepared in water slurry of the combustion catalysts is poured, comprising lead (II) - copper (II) phthalate oxide, technical carbon (soot) and graphite. After that ethyl acetate and diphenylamine are poured into the reactor, and the powder lacquer is prepared, then hide glue is added and the dispersion of powder lacquer to spherical particles is carried out. Then the sodium sulphate is introduced and the process of distillation of the solvent is carried out at different temperature and time regimes in the reactor jacket. |
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Light sensitive explosive composition Invention can be used in initiation means, as a generator of plane shock waves, as well as in devices for processing metals by explosion energy and optic systems of explosive charge initiation. A composition includes, wt %: a light-sensitive complex metal perchlorate 60-99.45, an optically transparent polymer 0.5-20 and a metal powder 0.05-20%. |
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Stick-detonator for industrial blasting Stick-detonator for industrial blasting comprises one or two through channels and a nest for the capsule, it is manufactured using cast moulding of mixed explosive containing 50-70 wt % trinitrotoluene and 50-30 wt % pentaerithrityl tetranitrate, which did not pass the recrystallisation stage, in a cylindrical shell of a polymeric material or multi-layer paper with thickness of 0.5-3.0 mm. |
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Water-containing explosive powder Invention relates to water-containing industrial explosives based on a gel-like matrix sensitised with pyroxiline powder. The water-containing explosive powder contains 40.0-65.0 wt % pyroxiline powder or a mixture thereof with ballistite powder, 6.0-15.0 wt % sodium nitrate, 4.0-10.0 wt % organic fuel, 10.0-25.0 wt % water, 0.3-2.0 wt % polyacrylamide and ammonium nitrate - the balance, wherein the linking agent is chrome alum or a mixture of chrome alum and aluminium in powder consistence 0.01-0.1, sodium thiosulphate 0.02-0.2 and further contains aluminium in form of a surface film or foil. |
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Method of producing mixture of fractions of oxidant from class of perchlorates Method of producing a mixture of oxidant fractions includes dosing and mixing coarse fractions with particles with a size of 160-315 mcm and fine fractions of ammonium perchlorate with specific surface of 6500-7500 cm2/g, with fine fraction being obtained by crystallisation of an oxidant from water solution of its finely disperse spraying in a thermal chamber, and contains an anti-caking additive - silicon dioxide. Coarse and fine fractions are mixed in ratio 73/27÷70/30 with additional introduction of silicon dioxide. Mixing is performed under conditions of rotational-vibrational motion of mixture due to displacement of a reservoir axis with respect to rotation axis by 45° with further provision of fluidised state of the mixture by supply into a hermetic reservoir of dried air under pressure not more than 0.07 MPa with simultaneous discharge from the reservoir under vacuum. |
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Device to fill munition with powder explosives Invention relates to filling munition and can be used for production of high-power explosives sensitive to external friction directly in ammo case. Proposed device comprises compaction mechanism with hydraulic cylinder and press-tool, crossbar with crank drive, ammo case clamp-and-turn mechanism, feeder with mixer and press-tool displacement indicator. Hydraulic cylinder rod end id connected with piston fluid line via parallel hydraulic control valve, safety valve and compensation vessel. Crank drive shaft is engaged via sine mechanism with ratchet bush of turn mechanism. Press-tool position indicator comprises indicator with friction clutch, scale, carrier and charge layer-by-layer growth control device. The latter comprises pickup and perforated ruler. |
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Emulsion explosive composition for forming blasthole charges Emulsion explosive composition (EEC) comprises as the oxidising phase the aqueous solution of ammonia and sodium or calcium nitrate and urea, and as the hydrocarbon phase the wax melt of fine crystalline or ceresin, individually or their mixture, with the emulsifier for industrial emulsion of explosives, individually or as specified emulsifier with tall oil rosin, oleoresin pine rosin, or their mixture, and as the sensitising agent - the aqueous solution of sodium nitrite, or polymeric microspheres or a their mixture. The effect of the invention is achieved by equilibrium ratio of components ensuring normalised density of emulsion matter equal to 1.00-1.20 g/cm3. |
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Catalytic chemical coolant for thermal aerosols and method for production thereof Catalytic coolant for a fire-extinguishing apparatus with a thermal aerosol and a method for production thereof. The catalytic chemical coolant for a thermal aerosol includes: endothermic coolant material: 50-95 wt %; catalytic additive: 1-30 wt %; process additive: 0.5-5 wt %; binding agent: 2-6 wt %. The endothermic coolant material is manganese carbonate, manganese oxalate, manganese phosphate, potassium manganate, potassium permanganate, or a composite endothermic cooling material consisting of manganese carbonate and an additional coolant. The catalytic additive is a metal oxide or hydroxide. The process additive is a stearate, graphite or a mixture thereof. The binding agent is a composite solution of an alkali metal silicate and a water-soluble high-molecular polymer. The invention also discloses methods of producing a coolant in form of large pieces, tablets, spherical granules or bars with a cellular structure. |
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Pyrotechnic castable composition for smokescreen formation Pyrotechnic castable composition for smokescreen formation comprises wt %: a mixture of powder of chlorinated paraffin wax 41-48 and liquid chlorinated paraffin wax 10-12, the powder of metal fuel 5-10, smoke-generating zinc oxide 15-20, potassium perchlorate 9-15, and epoxy resin 1-2, at that the metal fuel it contains as aluminium powder or aluminium-magnesium alloy. |
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Invention relates to packaged nitroester-containing explosives of 2nd class to be used for hard rock blasting in flooded heading and second working non-permitted mines at blasting by blast-hole charges. Proposed explosive comprises 7.0-9.0 wt % of nitroester sensitiser, 12.6-14.6 wt % of metallic combustible, 0.7-0.9 wt % of potassium stearate, 0.1-0.14 wt % of nitroester sensitiser thickener, 0.34-0.38 wt % of industrial oil, 0.1-0.14 wt % of soda ash, crystalline and pelletised ammonium nitrate making the rest. Nitroester sensitiser represents nitroglycerine or the mix of 80-90 wt % of nitroglycerine and 10-20 wt % of Ethylene Glycol Dinitrate while nitro cotton is used and sensitiser thickener. |
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Staroverov's rocket propellant - 14 (versions). Propellant comprises fuel and oxidant. Versions of the fuel contain fuel and oxidant at the following ratios of components: beryllium boron hydride - 35.26%+-10%, ammonium dinitramide - 56.52%+-10%, beryllium - 8.22%+-5% or lithium boron hydride - 36.45%+-10%, ammonium dinitramide - 51.93%+-10%, lithium - 11.62%+-5%, or aluminium boron hydride - 24.1%+-10%, ammonium dinitramide - 58.84%+-10%, aluminium - 17.06%+-5%. |
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Staroverov's rocket propellant - 15 (versions) Rocket propellant comprises fuel and oxidiser. Rocket propellant features the following composition at the following ratio of components in wt %: beryllium borane - 34.63±10, ammonia dinitramide - 55.50±10, beryllium hydride - 9.87±5, or beryllium borane - 23.78±10, ammonia dinitramide - 76.22±10, or lithium borane - 35.85±10, ammonia dinitramide - 51.06±10, lithium hydride - 13.09±5, or aluminium borane - 23.66±10, ammonia dinitramide - 57.76±10, aluminium hydride - 18.58±5, or decaborane - 39.64±10, ammonia dinitramide - 60.36±10. Other versions are produced using the reaction with ammonia (wt %): beryllium borane - 44.61±10, ammonia dinitramide - 35.75±10, ammonia - 19.63±5. All said reactions can be realised with the help of the other oxidiser, that is, nitrogen hexaoxide, N3O6. |
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Method of producing spherical powder Invention relates to production of spherical powders for small arms. Proposed method consists in production of powder varnish in reactor, dispersing into spherical particles, dewatering and distillation of ethyl acetate from spherical powder followed by its flushing, sorting and drying. Note here spherical powder with graphite is fed via settling cyclone into drying chamber with blow-out surface. Powder drying is conducted under boiling conditions at air pressure in drying chamber created by screens arranged at chamber bottom. Heat carrier is fed to chamber bottom part for 60-80 minutes at 88-98°C, then 140-180 minutes at 65-75°C and for 20-30 minutes at 50-60°C. Dried powder is discharged into intake bin and forced by air for dry sorting. |
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Phlegmatised explosive and method for dry phlegmatisation thereof Invention relates to the technology of phlegmatising explosives for use in making pressed charge for the munitions-filling and oil industry, particularly perforation cumulative charges and other special charges used at high temperatures. The phlegmatised explosive is based on a phlegmatising agent made from high-melting polyethylene wax PV-200 with melting point of 103-110°C with addition of stearine and plasticiser DOA (di-(2-ethylhexyl)-adipate). The explosive used is, for example, hexogene or oxtogene. The method for dry phlegmatisation of the explosive by vibration mixing is carried out while heating all components to the melting point of the phlegmatising agent, followed by cooling the mixture of explosive crystals coated with the phlegmatising agent to temperature of 20-60°C. |
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Pyrotechnic low temperature rapidly burning gas-generating composition Invention relates to gas-generating compositions, which contain inorganic salts of oxygen-containing halogen acids, namely to pyrotechnic low-temperature rapidly burning gas-generating compositions for gas-generators, which are used in devices, applying mechanic energy of generated gases, for instance, in devices of rotor spin-up in turbo-jet engines, systems of rocket and torpedo control, shock-absorbers, jack-cushions, etc. Pyrotechnic low-temperature rapidly burning gas-generating composition includes in wt %: 58.0-68.0 nitroguanidine, 15.0-25.0 ammonium perchlorate, 5.0-11.0 urotropine, 1.0-7.0 ammonium bichromate, 2.5-3.5 butadiene-nitrile rubber and 1.5-2.5 phenolformaldehyde resin. |
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Invention relates to rocket propellants for liquid, solid fuel and hybrid rocket engines. Rocket propellant contains fuel, which represent borazine, and oxidant. In presence of bound nitrogen in oxidant fuel additionally contains boron or its compounds, for instance, diborane, tetraborane, decaborane, beryllium borohydride, metal borides. As one of versions, rocket propellant contains as fuel 62.65±15.0% of borazine and oxidant oxygen 37.35±15.0%. As another version rocket propellant contains 34.56±13.0% of borazine, 51.52±13.0% of oxygen and 13.02±13.0% of boron. In all cases the sum of component ratios must constitute 100%. |
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Method to improve explosives and explosive /versions/ Invention relates to explosives used in civil blasting works and in military ammunition, mostly cumulative. The method to improve explosives includes addition of boron or its compound to a nitrogen-containing explosive. Mixtures of octogene or ammonia nitrate are described, or ammonia dinitramide with boron or boron compounds, including tetraboran, diboran, berillium boron hydride, and a mixture of boron with berillium boron hydride. Substantially boron reacts exothermally with nitrogen with increased energy of explosion; compounds of boron, such as borans, also provide for large amount of hydrogen. |
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Method of obtaining disc thin-dome gunpowder Invention relates to method of obtaining thin-dome disk gunpowder by water-disperse method. Method of obtaining gunpowder includes mixing in water gunpowder components: pyroxylene with high nitrogen content with conventional viscosity 1.0-4.0°E or based on it gunpowder mass with 15-25 wt % of nitroglycerine, and stabilizer of chemical stability, preparation of gunpowder varnish in ethyl acetate, with ratio between volumes of water and gunpowder varnish 0.5-0.8, dispersion of gunpowder varnish with introduction of emulsifier, introduction of sodium sulfate, removal of ethyl acetate, washing, sorting and drying gunpowder elements; after removal of ethyl acetate temperature in reactor is reduced to 50-60°C, return technological wastes are introduced, with restoration of initial ratio between water and gunpowder volumes. Obtained mass is mixed for 20-30 min, with redistribution of ethyl acetate, dehydrated; final removal of solvent is performed by distillation with increase of temperature in reactor to 92-95°C. |
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Rocket propellant or explosive substance and method of its preparation (versions) Invention relates to versions of rocket fuel for solid-propellant and hybrid rocket engines. Rocket propellant contains nitro-compound, for instance, nitroform, which is present in it in bound connection with unsaturated hydrocarbons (nitroethylene, ethylene, sterene, propylene, nitropropylene, acrylic acid nitryl, diacetylene) by Michael reaction. As oxidizer propellant contains, for instance ammonium dinitramide. In another version nitroform in rocket propellant is dissolved in liquid ammonia. Rocket propellant can contain boron compound, for instance, decaborane, diborane, pentaborane. |
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Pyrotechnical aerosol-forming composition for producing impact on clouds and fog Invention relates to field of active impact on hydrometeorological processes, in particular, for dispersion of fog and clouds by generation of adsorbing aerosol in the process of burning pyrotechnical charge, which includes salts of halogenides. Pyrotechnical aerosol-forming composition for impact on clouds and fog contains ammonium perchlorate, phenol formaldehyde resin, urotropin as organic plasticiser, as halogenide, forming distributed centres of disperse phase - potassium iodate, which serves supplier of potassium iodide, and copper iodide, ice-forming silver iodide and graphite as technological additive. |
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Powder charge for sporting pistol cartridge "9 mm luger" (9×19 mm) Powder charge comprises a batch of high-nitrogen dibasic pelletised powder arranged in capsulated metal cartridge case. Weight of powder charge makes 0.32-0.36 g. Bulk densities and thickness of cylindrical one-channel powder grain fire bed make 0.630-0.660 kg/dm3 and 0.25-0.35 mm. |
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Pellet powder for propellant charge for 9×19 mm pistol cartridge with stell core bullet Invention relates to production of pellet powder for small arms, particularly for propellant charge for a 9×19 mm pistol cartridge with a steel core bullet. The powder contains pyroxylin, nitroglycerine, diphenylamine, centralite II, graphite, ethyl acetate and moisture. The starting material used is pyroxylin with nitrogen oxide content of 212.8-213.8 ml NO/g, packed density of the powder of 0.960-0.990 kg/dm3, with average diameter of the powder elements of 0.25-0.55 mm and average thickness of the burning vault of 0.12-0.25 mm. |
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Moisture-resistant pellet powder for smooth-bore hunting shotgun cartridges Invention relates to production of pellet powder for small arms, particularly for 12, 16, 20 calibre smooth-bore hunting weapons. The powder contains pyroxylin, diphenylamine, graphite, ethyl acetate and moisture. The starting material is a mixture of pyroxylin with nitrogen oxide content 212.5-213.5 ml NO/g and pyroxylin with nitrogen oxide content 205.0-210.5 ml NO/g. The surface of the powder elements further contains vaseline oil which forms a moisture-proof coating which prevents penetration of moisture into the powder elements. |
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Invention relates to field of elaboration of fuel, namely ecologically friendly hard rocket fuel, used in anti-hail rockets, intended for producing impact on clouds in order to protect agricultural crops from hail. Hard nitrocellulose-based rocket fuel for anti-hail rockets contains nitroglycerine, dinitrotoluene, dibutyl phthalate, stabiliser of chemical resistance - centralite or 1,2-dibutoxibenzene or their mixture, technological additives zinc stearate and industrial oil, combustion modifiers - calcium carbonate and copper oxide, preliminarily processed with polyacrylamide solution. |
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Invention relates to industrial blasting means, namely detonator pellet, intended for initiation of hole charges in drilling and blasting works at mining enterprises. Detonator pellet for industrial blasting consists of charge of explosive substance in plastic shell, provided with canal and one or two sockets and made from injection moulding mixture of trotyl with pentaerythritol tetranitrate (TEN). Mixture contains 45-55% of TEN with specific surface from 1100 to 2400 cm2/g or 56-100 wt % of powder-like pentolite, made on such TEN, of total charge weight. TEN is produced directly in technological process or is obtained by mixing product with specific surface larger than 2400 cm2/g and smaller than 1100 cm2/g, and powder-like pentolite contains from 45 to 55 wt % or from 88 to 92 wt % of TEN, trotyl constituting the remaining part. |
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Method of making spherical powder for small arms Invention relates to production of spherical powders for small arms. Proposed method comprises introducing water-squeezed-out graphite suspension in spherical powder, feeding said powder with graphite into air line by compressed air pressure wherein powder is dried and graphitised. Spherical powder after water squeezing is fed into auger feeder bin equipped with vibrator wherefrom it is fed by auger into the chamber of ejector composed of pipeline furnished with nozzle at its end. Said powder is fed in airflow into mixing chamber, said airflow with spherical powder is expanded and, further, via pipeline fed for final drying. |
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Ball powder for 5,6 mm sports rifle cartridge of ring ignition Powder contains nitro-cellulose, diphenylamine, centralite I, dinitrotoluene, graphite, ethyl acetate and moisture. As feed stock, it contains a mixture of nitro-cellulose with nitrogen oxide content of 212.5-213.5 ml NO/g and nitro-cellulose with nitrogen oxide content of 205.0-210.5 ml NO/g. |
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Device for forming charges of end burning from composite solid propellant In the device for forming comprising a steel housing, a bottom with a support on the stand and an armoured casing, the inner part of the steel housing repeats the outer shape of the armoured casing made in the form of a tube of the stepped configuration and a spherical bottom. For the radial fixation of the device in operation with long length charges the housing is additionally provided along the outer surface with three circumferential reinforcement ribs and the upper flange. For axial fixation of the device the lower and the upper reinforcement ribs are made with the circumferential flanges. The stand has a massive base which diameter is 2-2.2 times greater than the diameter of the housing. |
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Method of modifying carbon surface Method involves preparing a carbon suspension in aqueous copper acetate solution in weight ratio C : H2O : Cu(CHCOO)2-H2O = 1 : 10…15 : 0.25…0.30, heating to 90...100°C, adding aqueous sodium hydroxide solution to the carbon suspension with weight ratio of copper acetate to sodium hydroxide Cu(CH3COO)2·H2O : NaOH = 1 : 1.05…1.2 for 20…30 minutes, adding aqueous solution of a surfactant - octyl phenyl ether of polyethylene oxide to carbon of 0.005…0.02 : 1. The mixture is then held while stirring for 10…15 minutes and then cooled to 25…30°C, followed by filtration, washing with water and drying at temperature of 90…100°C to constant weight. |
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Polymer composition for bonding armoured solid propellant charge with gas generator housing Invention relates to rocket engineering and preparation of a boding polymer composition for bonding an armoured solid propellant charge with a gas generator housing, which prevents longitudinal movement of the charge in the gas generator housing. The polymer composition contains hydroxyl-containing polybutadiene rubber SKD-GTRA, 1,4-butanediol, technical carbon, hexamethylene diisocyanate, dibutyltin dilurate and further contains a combination of N,N,N',N'-tetrakis-(-2-hydroxypropyl-)-ethylenediamine (lapromol 294) and a polyether with molecular weight of 1000 (laprol 1052). |
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Pyrotechnic composition for fireworks Pyrotechnic composition for fireworks contains a colour-flame oxidant - barium nitrate or strontium nitrate, polyvinyl chloride, aluminium-magnesium powder, phenol-formaldehyde resin and, as recyclable pyroxylin-containing wastes, combustible case material which contains trinitrotoluene, pyroxylin and cellulose in weight ratio of 1:0.5:0.5, respectively. |
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Pyrotechnic igniter composition Pyrotechnic igniter composition contains potassium perchlorate as an oxygen-containing oxidant, aluminium powder or aluminium-magnesium alloy powder as metallic fuel, dicyandiamide and fluororubber. The composition is obtained in form of vibrocompacted granules with size of 1-3 mm, which enables compaction of granules inside an article when charging without aggregation of granules when packing, and forming a porous structure of a gas-permeable layer. A charge of said composition, in addition to incendiary action while forming a hot flame, is also capable of explosive action due to dynamic generation of a large amount of gaseous combustion products in the closed volume of ammunition. |
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Method of recycling combustible case wastes Invention proposes to use combustible case wastes to produce pyrotechnic compositions for fireworks. To this end, combustible case wastes containing trinitrotoluene, pyroxylin and cellulose are pre-dried at temperature of 40-50°C for 3-5 hours to moisture and volatile substance content of not more than 0.5 wt %, ground to particle size of not more than 100 mcm and added in form of a granular component to a pyrotechnic mixture as an active oxygen-containing oxidant and combustible substance. |
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Method of producing pyrotechnic composition Method of producing pyrotechnic composition involves mixing components, preparing several batches of the composition, packing each batch with the same number of portions such that portions of the composition taken from the same batch have the same amount of composition by mass. A portion from each batch of the composition is then mixed with others to obtain several parts of a common batch of the composition. The variance between the maximum and minimum value of rate of combustion and specific gas release in the common batch of the composition does not exceed 10%, and the heat release variation does not exceed 2%. |
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Grinder of ballistic powder and tnt charges Proposed grinder comprises bed, loader composed of bin with flute, cutting assy with inserts and cooling assy. Cutting assy is arranged inside said bin and comprises disc with diametrical slots. Angle between axes of the latter makes 60 degrees, hoggers being arranged between said slots at equal spacing there between. Said hoggers are shifted relative to each other and bolted in place. Coolant is fed via pipeline and nozzles arranged at bin and cover side surfaces and composed of nonferrous sleeves with conical cutout and arranged at right angle to each other and at 45 degrees to vertical and horizontal axes. Root flame angle makes 45-60 degrees and is located in one plane with cutting plane. |
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Proposed powder contains hydride, for example, boranes, silanes, phosphines, germanium hydride or the mix of several hydrides with common positive formation enthalpy. Powder charge is arranged in sealed charged chamber. |
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Method of ballistic solid rocket propellants Cutting of charge fragment comprises displacing it through preset length, stopping it and cutting off by blade coupled with hydraulic cylinder piston. Piston continues lowering to press at charge fragments left after previous cycle on the grate. Piston extrudes said fragments through the grate to contact with said grate. Thereafter, it moves upward to initial position. Here, first fragment is completely separated and arranged between thrust and charge. In piston upward displacement, second fragment of the charge is cut off. Piston at crown, both fragments move down onto the grate. Then, cycle reiterates. |
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Charge for gas and dummy 5,6 mm-cartridges of annular ignition Said charge is made of spherical powder elements consisting of mollite containing nitrogen oxide in amount of 212.0…213.5 ml NO/g, 0.4…0.8 wt % of diphenylamine, 0.3-0.7 wt % of graphite and carbon, 0.2…1.0 wt % of ethyl acetate, 0.4-0..8 wt % of moisture, with bulk density of at least 0.684-695 kg/dm3, at the following ratio of components: weight fraction of powder after minus 0.315 sieve and plus 0.2 sieve- not over 0.80, weight fraction of coarse grains after plus 0.2 sieve and minus 0.315 sieve - not over 20. |
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Method of moisture removal from pyro powders Proposed method comprises two-step removal of moisture brought about by wetting from powder elements. First, moisture is displaced from powder elements by ethyl alcohol in concentration of 95-96% under centrifugal force in sprinkling of powder with alcohol in amount of 0.35-0.50 l/kg for fine powders and 0.50-1.00 l/kg for medium powders with simultaneous powder expression for 2-3 min and final expression for at least 10 min. Removal of residual amount of water-alcohol mix from powder to required magnitudes is performed by drying in table drier or dry-cure cabinets by air heated to 25-40°C for at least 1 hour with simultaneous forced discharge of used air or drying in 70 mmHg-vacuum for at least 1.5 h. Batch centrifuges are used for displacement. |
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Method of producing spherical powder Proposed method comprises mixing of components in reactor, preparation of powder lacquer in ethyl acetate, dispersion in the presence of glue and solvent distillation. Note here that powder lacquer dispersion is performed in 6.5 m3 blade mixer with variable inclination blades arranged in 3-4 rows at the shaft bottom extension at 90 degrees to previous blade. Shaft top extension runs in two radial spherical bearings and one thrust bearing fitted in the column. Flow spreader is arranged at reactor powder and rigidly secured at the rod to direct flow of formed cone to shaft center. Formation of powder lacquer and its granulation is performed at 60-120 rpm of aforesaid mixer. Reactor is heated by heat carrier fed into its jacket. Shaft is sealed by cooled gland. Finished suspension is discharged from reactor by gravity via remote control discharge valve while discharged suspension bulk is filled with nitrogen. |
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Spherical powder charge for 7,62×51m hunting cartridge Proposed charge consists of spherical powder with particle size of 0.4-0.8 mm. Said charge is arranged inside encapsulated case with bullet. Said charge is made of spherical powder elements consisting of nitrocellulose containing nitrogen oxide in amount of 213.0…214.5 ml NO/g, 10.0…13.0 wt % of nitroglycerine, 0.1…0.3 wt % mollite II, 0.3…0.7 wt % of diphenylamine wit bulk density of at least 0.960 kg/dm3, 4.0-5.0 wt % of mollite I and 2.0-4.0 wt % of dinitrotoluene retarded from the surface, 0.1-0.3 wt % of graphite graphitised from the surface with 0.2…0.6 wt % of moisture and 0.1…0.9 wt % of ethyl acetate. Weight fraction of undersize 0.8 mm powder and oversize 0.4 mm powder makes at least 95 %. Weight fraction of oversize 0.8 mm powder and undersize 0.4 mm powder makes at least 5%. |
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Detonator with electronic delay for shock-wave tube (swt) Invention relates to field of high-accuracy systems of detonation, detonators with electronic delay and can be applied in composition of non-electric systems of detonation, systems of initiation based on shock-wave tubes (SWT), in initiation of detonation systems for carrying out blasting operations in mining industry, soldering, mass salute pyrotechnics, MES and others. Highly accurate detonator with electronic delay for SWT consists of case closed from one side, from other side connected to chock-wave tube, circuit of time delay, condenser, igniter and electromagnetic generator, placed between outlet of shock-wave tube and inlet of time delay circuit. Generator includes cover, frame, permanent magnet and coils, coiled on frame. |
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Spherical gunpowder for charges for hunting cartridge 7,62×51 (308win) Invention relates to field of obtaining spherical gunpowder (SGP) for small arms, in particular, hunting rifles. Gun powder includes nitrocellulose with volume content of nitrogen oxide 210.5-213.0 ml NO/g, colloxyline NH, nitroglycerine with content to 20 wt %, centrolite I, centrolite II, diphenylamine, dinitrotoluene, ethylaccetate, and moisture. |
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Spherical gunpowder for hunting shotguns of 12, 16, 20 calibres Invention relates to field of obtaining spherical gunpowder (SGP) for small arms. Gunpowder is made from mixture of 70-90 wt % of pyroxylin with content of nitrogen oxide 209.0-210.5 ml NO/g and 10-30 wt % of pyroxylin with content of nitrogen oxide 212.5-213.5 ml NO/g and contains, in wt %: diphenylamine 0.3-1.0, graphite 0.1-0.6, ethylacetate 0.3-0.8 and moisture 0.4-0.9. |
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Invention relates to field of spherical gun powders (SGP) obtaining for small arms, in particular, for smooth-bore shotguns. Method includes mixing of components, preparation of gunpowder varnish in ethylacetate, dispersion in presence of glue, distillation of ethylacetate and drying. Gunpowder, which contains mixture of pyroxyline with nitrogen oxide content 205.0-210.5 ml NO/g, and pyroxiline with nitrogen oxide content 205.0-210.5 ml NO/g, diphenylamine, ethylacetate, with humidity 6-10 wt %, size of gun powder elements 0.7-0.4 mm, with bulk density 0.60-0.80 kg/dm3, is processed in revolving polished drum with graphite of C-1 mark together with water, after that, petrolatum is introduced and mixed. After that, gunpowder is dried. |
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Charge from spherical gunpowder for hunting cartridge 7,62×51 (308win) Invention relates to field of development of cartridges for small arms, in particular, to charge for hunting cartridge 7.62×51 (308 Win). Charge consists of spherical gunpowder with size of particles 0.315-0.8 mm. Charge is placed into encapsulated case with bullet. Charge is made from spherical gunpowder elements, which consist of nitrocellulose with content of nitrogen oxide 210.5-213.0 ml NO/g. 20.0-30.0 wt % of colloxyline "NH", 13.0-20.0 wt % of nitroglycerine, 0.1-0.3 wt %, centralite II, 0.5-1.1 wt % diphenylamine, with bulk density 0.960-0.990 kg/dm3, retarded from surface 4.0-7.0 wt % centralite I and 1.5-3.0 wt % of dinitrotoluene, graphitised from surface 0.1-0.3 graphite, with content of moisture 0.2-0.9 wt % and 0.1-0.9 wt % of ethylacetate. |
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Method of spherical powder pre-drying Invention relates to production of spherical powders for small arms. Method of spherical powder drying including spherical powder with graphite feed into air transport line and, via cyclone precipitator, to drier whereat powder with graphite at 50 to 100°C is fed via air transport line to preheater composed of two-stage tube. Spherical powder and air heated in vortex flow to 95-105°C are fed to the first stage while air heated in vortex flow to 95-105°C is fed to second stage. Dried spherical powder with moisture content of 8-10 wt % is fed to final drying. |
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Method of producing spherical powder Invention relates to production of spherical powders for small arms. Proposed method comprises mixing the components in reactor, preparing powder lacquer in ethyl acetate, dispersing in the presence of adhesive and ethyl acetate distillation. Note here that powder lacquer is dispersed in reactor by blade mixer, mixer blades being arranged in 3-4 rows on reactor shaft and inclined at 90 degrees to each other. Blade width makes 0.07-0.12 of mixer diameter while its thickness equals 0.007-0.008 of mixer diameter. Blade feature variable inclination angle with respect to horizontal plane at six regularly spaced points over blade length starting from mixer hub. |
Another patent 2513159.