Ammonium Nitrate Patents (Class 149/46)
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Patent number: 12123697Abstract: The present invention discloses a charging device and method for open pit mine rock perforation blasting within the mining technology domain. The charging device includes a charging barrel with a detachable cover plate at the top and a bottom opening, housing a tray for explosive material. A jacking mechanism on the tray's side surface aids in positioning. A flexible interval gasbag separates the explosive and tray, with a wire passing hole at its center connected to an air pump via an inflation tube. A pressing plate and lifting mechanism in the cover plate facilitate lifting within the barrel. Additionally, a moving mechanism on the blast hole's top relocates the charging barrel. This innovation addresses challenges related to the cumbersome positioning and filling of existing powder explosives in open pit mine rock perforation blasting.Type: GrantFiled: February 6, 2024Date of Patent: October 22, 2024Assignee: CHINA UNIVERSITY OF MINING AND TECHNOLOGYInventors: Xiaohua Ding, Zhongao Yang, Zhouquan Liao
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Patent number: 12098316Abstract: Interpolymers useful for enhancing the efficacy of nutrients in soil and fertilizers; and methods of inhibiting the precipitation of, and/or dispersing, inorganic elements.Type: GrantFiled: September 19, 2022Date of Patent: September 24, 2024Inventors: Bryan D. Evans, Adam Evans
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Patent number: 11535573Abstract: The invention relates to a transport vehicle designed preferably for producing a mixture of waste lubricating oils/fuel oil (ALR/FO), mounted preferably on a chassis and comprising at least one metal tank.Type: GrantFiled: December 15, 2016Date of Patent: December 27, 2022Assignee: ENAEX SERVICIOS S.A.Inventors: Luis Antonio Loyola Irribarra, Camilo Garcia G., Fernando Zangheri G., Diego Mendez A.
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Patent number: 10865162Abstract: Explosive compositions for use in high temperature, reactive ground, or both, are disclosed. The explosive compositions can include an emulsion with a continuous organic fuel phase and a discontinuous oxidizer phase. The oxidizer phase can include one or more Group I or Group II nitrates.Type: GrantFiled: January 8, 2019Date of Patent: December 15, 2020Assignee: Dyno Nobel Asia Pacific Pty LimitedInventors: Jade Pettersen, Emma McPhail, Jeff Gore
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Patent number: 10774014Abstract: The invention refers to a free-flowing ammonium nitrate (AN) product which comprises a mixture of AN particles and beads or granules of activated alumina, a process for preparing the same and the use of said beads or granules as free-flowing additive for AN particles.Type: GrantFiled: February 9, 2016Date of Patent: September 15, 2020Assignee: MAXAMCORP HOLDING, S.L.Inventors: Unai Elizundia Eriz, Mateusz Marek Hass
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Patent number: 10202315Abstract: The present invention is directed to an explosive composition comprised of heavy ANFO and expanded polymeric beads that have a density that is less than the density of the heavy ANFO. The expanded polymeric beads have a size that is determined or based on the size of ammonium nitrate prills used in the heavy ANFO portion of the composition. In one embodiment, the expanded polymeric beads that are utilized in the composition are at least 70% of the lower limit of the mesh size of the predominant ammonium nitrate prill mesh size. In another embodiment, the expanded polymeric beads are at least 70% of a size that is related to the average mesh size of the ammonium nitrate prills.Type: GrantFiled: April 3, 2017Date of Patent: February 12, 2019Assignee: LDE CorporationInventor: Kevin H. Waldock
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Patent number: 10065898Abstract: The disclosure is directed to pumpable explosive compositions that include a matrix emulsion, which has i) technical or fertilizer grade ammonium nitrate in a ratio between 60% and 70%; (ii) sodium nitrate from 1% to 20%; iii) urea from 0.1% to 8%; iv) thiourea from 0.1% to 2%, v) water from 5% to 20%, vi) acetic acid or sulfamic acid from 0.1% to 2%; vii) surfactants of non-ionic or polymeric nature from 0.5 to 3%; and viii) a hydrocarbon such as petroleum or a paraffinic or naphthenic based mineral oil, and where a second component of composition are technical and/or fertilizer grade ammonium nitrate prills in a ratio from 5% to 50%.Type: GrantFiled: November 16, 2017Date of Patent: September 4, 2018Assignee: EXSA S.A.Inventor: Karl Maslo Luna
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Patent number: 9611184Abstract: The present invention is directed to an explosive composition comprised of heavy ANFO and expanded polymeric beads that have a density that is less than the density of the heavy ANFO. The expanded polymeric beads have a size that is determined or based on the size of ammonium nitrate prills used in the heavy ANFO portion of the composition. In one embodiment, the expanded polymeric beads that are utilized in the composition are at least 70% of the lower limit of the mesh size of the predominant ammonium nitrate prill mesh size. In another embodiment, the expanded polymeric beads are at least 70% of a size that is related to the average mesh size of the ammonium nitrate prills.Type: GrantFiled: March 5, 2016Date of Patent: April 4, 2017Assignee: LDE CorporationInventor: Kevin H. Waldock
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Patent number: 9115036Abstract: A method of thermally treating high density ammonium nitrate for manufacturing ANFO and heavy ANFO including loading high density ammonium nitrate into a tank; entering the high density ammonium nitrate into heating equipment at room temperature; heating the high density ammonium nitrate inside the heating equipment; removing the treated ammonium nitrate from the heating equipment at a temperature less than 60° C.; and sieving the treated ammonium nitrate, thereby obtaining thermally treated ammonium nitrate; feeding thermally treated ammonium nitrate at a temperature of less than 30° C. into a mixing chamber while injecting fuel into the thermally treated ammonium nitrate feeding pipe, thereby obtaining ANFO; loading gassed or ungassed bulk emulsion into a hopper; feeding the bulk emulsion into the same mixing chamber as the ANFO; and mixing the bulk emulsion and the ANFO, thereby obtaining heavy ANFO.Type: GrantFiled: July 31, 2014Date of Patent: August 25, 2015Assignee: EXSA S.A.Inventors: Karl Maslo, Heberth Ruiz
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Patent number: 9096530Abstract: An explosive material in the form of a cocrystal comprising 2,4,6,8,10,12-hexanitro-2,4,6,8,10,12-hexaazaisowurtzitane (CL-20 or HNIW) and at least one energetic material. The energetic material is selected from 2,4,6-trinitrotoluene (TNT), and 1,3,5,7-tetranitro-1,3,5,7-tetrazocane (HMX).Type: GrantFiled: February 8, 2012Date of Patent: August 4, 2015Assignee: The Regents of The University of MichiganInventors: Adam Matzger, Onas Bolton
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Explosive composition having a first organic material infiltrated into a second microporous material
Patent number: 8992707Abstract: An energetic composition with controlled detonation having at least a first organic material and a second material, where the second material is a porous material (micro-, meso-, or macroporous), having a pore ratio of at least 10% and preferably greater than 50%, and the first material is, at least partially, infiltrated into the pores of the second material. A mixture containing such a composition, and a method for manufacturing such a composition and such a mixture. Additionally, a method for fragmenting or expanding a microporous material at nanoscale.Type: GrantFiled: October 6, 2008Date of Patent: March 31, 2015Assignee: Institute Franco-Allemand de Recherches de Saint-LouisInventors: Marc Comet, Denis Spitzer, Vincent Pichot -
Publication number: 20150047759Abstract: The present invention is directed to an explosive composition comprised of heavy ANFO and expanded polymeric beads that have a density that is less than the density of the heavy ANFO. The expanded polymeric beads have a size that is determined or based on the size of ammonium nitrate prills used in the heavy ANFO portion of the composition. In one embodiment, the expanded polymeric beads that are utilized in the composition are at least 70% of the lower limit of the mesh size of the predominant ammonium nitrate prill mesh size. In another embodiment, the expanded polymeric beads are at least 70% of a size that is related to the average mesh size of the ammonium nitrate prills.Type: ApplicationFiled: April 14, 2014Publication date: February 19, 2015Inventor: Kevin H. Waldock
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Publication number: 20150033969Abstract: The present invention relates generally to an explosive composition comprising an aqueous emulsion of: an oxidizer component, a hydrocarbon fuel component containing emulsifier, and a bulking agent being a fuel-type waste material in a solid particulate form substantially lacking rough surfaces and sharp edges. Preferably the composition is of an ammonium nitrate based emulsion and a pelletised bulking agent. It also involves a method of providing an explosive composition to a blast site using a conventional mobile processing unit (MPU), being a truck having separate compartments adapted for holding fuel oil, dry ammonium nitrate prill, and ammonium nitrate based emulsion, where a compartment instead holds particulate waste material. It also concerns a method of blasting soft and wet ground, which comprises injecting into one or more blast holes in the soft and wet ground a sufficient quantity of the composition, and then setting off the composition.Type: ApplicationFiled: March 8, 2013Publication date: February 5, 2015Inventors: Jeff Gore, Nathan Paris
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Publication number: 20140352567Abstract: An explosive composition comprising a liquid energetic material and sensitizing voids, wherein the sensitizing voids are present in the liquid energetic material with a non-random distribution, wherein the liquid energetic material comprises (a) regions in which the sensitizing voids are sufficiently concentrated to render those regions detonable and (b) regions in which the sensitizing voids are not so concentrated and wherein the explosive composition does not contain ammonium nitrate prill.Type: ApplicationFiled: December 13, 2012Publication date: December 4, 2014Inventors: John Cooper, Ian John Kirby, Richard Goodridge, Vladimir Sujansky, Simon James Ferguson
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Publication number: 20140311634Abstract: A blasting explosive composition containing a solid inorganic oxidising salt as the oxidizer component, a hydrocarbon liquid as the fuel component, and a binding agent. The composition can also contain an ammonium nitrate based emulsion. The binding agent can increase the water resistance, or increase the sleep time, of the explosive composition, or increase the fuel oil absorbency of the solid inorganic oxidising salt. The binding agent is selected from one or more of a long chain carboxylic acid and its salts and derivatives, especially those having from 8 to 100 or preferably 10 to 50 carbon units. The binding agent may preferably be selected from one or more of: dimer acid, trimer acid, polyisobutylene succinic anhydride, oleic acid, stearic acid, sorbitan tristearate, and their salts and esters.Type: ApplicationFiled: November 19, 2012Publication date: October 23, 2014Applicant: Dyno Nobel Asia Pacific Pty LimitedInventors: Emma McPhail, Brendan Griggs, Jeff Gore, Nathan Paris
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Publication number: 20140216616Abstract: Compositions, methods and systems involving nitrate compounds are disclosed and described. A method of dissolving a nitrate compound having an additive can comprise dissolving the nitrate compound to form an aqueous nitrate solution and adding a surfactant to the aqueous nitrate solution, where the surfactant disperses the additive.Type: ApplicationFiled: February 4, 2014Publication date: August 7, 2014Applicant: Dyno Nobel, Inc.Inventors: Don Cranney, Robert Bingham, Lee McKenzie
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Publication number: 20140109788Abstract: A liquid electrically initiated and controlled composition comprising an oxidizer, soluble fuel additive(s), and other optional additives to enhance the chemical or ballistic properties, or a combination thereof is disclosed. The liquid composition further comprises stabilizers to enhance thermal stability, sequestrants to minimize deleterious effects of transition metal contaminants, and combustion enhancers maximizing efficiency. Buffers and heavy metal sequestering or complexing agents may be used in combination to achieve the highest degree of thermal stability. Additional ionic co-oxidizers may be added to the liquid composition to stabilize the liquid oxidizer and further depress freezing point. The liquid phase of matter allows flow via pipes or tubes from tanks, reservoirs, or other containers, through metering valves, followed by ignition or combustion modulation when stimulated by electrodes, statically or dynamically.Type: ApplicationFiled: September 27, 2013Publication date: April 24, 2014Applicant: Digital Solid State Propulsion, LLCInventors: Michael D. McPherson, Tim Manship
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Patent number: 8696837Abstract: The present invention is directed to an explosive composition comprised of heavy ANFO and expanded polymeric beads that have a density that is less than the density of the heavy ANFO. The expanded polymeric beads have a size that is determined or based on the size of ammonium nitrate prills used in the heavy ANFO portion of the composition. In one embodiment, the expanded polymeric beads that are utilized in the composition are at least 70% of the lower limit of the mesh size of the predominant ammonium nitrate prill mesh size. In another embodiment, the expanded polymeric beads are at least 70% of the a size that is related to the average mesh size of the ammonium nitrate prills.Type: GrantFiled: October 10, 2010Date of Patent: April 15, 2014Inventor: Kevin H. Waldock
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Publication number: 20140090757Abstract: An emulsion explosive, formulated with a basic surfactant, which is sensitised by gassing with active sodium hypochlorite.Type: ApplicationFiled: April 30, 2012Publication date: April 3, 2014Applicant: AEL MINING SERVICES LIMITEDInventors: Andre Pienaar, Hamat Yakhoub, Eric Kennedy, Bogdan Dlugogorski
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Patent number: 8657974Abstract: A gas generator 10 includes an auto-ignition/booster composition 212 that contains a metal chlorate such as potassium chlorate as an oxidizer, a carboxylic acid such as DL-tartaric acid as a primary fuel, a secondary oxidizer such as strontium nitrate, and if desired, a secondary fuel such as 5-aminotetrazole. The auto-ignition/booster composition 212 and a separate provision of ammonium nitrate or phase stabilized ammonium nitrate 228 are provided within a single combustion/decomposition chamber 222 for the production of gas, upon actuation of the gas generator 10. Vehicle occupant protection systems 180, containing the gas generator 10, are also provided.Type: GrantFiled: August 31, 2010Date of Patent: February 25, 2014Assignee: TK Holdings, Inc.Inventors: Brian A. Mayville, Deborah L. Hordos, Graylon K. Williams
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Publication number: 20130327456Abstract: A process for producing an intermediate emulsion comprising an oxidizer solution, fuel and emulsifier, which process comprises the steps of: (a) mixing in a micromixer an oxidizer solution with a fuel blend comprising a fuel and an emulsifier so as to solubilise a portion of the oxidizer solution in the fuel blend to produce a precursor product; (b) mixing the precursor product obtained in step (a) using a micromixer in one or more successive stages in order to form the intermediate emulsion.Type: ApplicationFiled: August 12, 2011Publication date: December 12, 2013Applicant: ORICA INTERNATIONAL PTE LTD.Inventors: Richard John Goodridge, Vladimir Sujansky, Ivan Junarsa, Kira McGrath
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Patent number: 8425701Abstract: An explosive composition is provided comprising an explosive agent, a solid fuel and a polymeric adherent wherein the explosive agent, solid fuel and polymeric adherent are dispersed throughout the composition.Type: GrantFiled: April 28, 2009Date of Patent: April 23, 2013Assignee: Blew Chip Holdings Pty Ltd.Inventors: Alan Twomey, Michael Twomey
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Patent number: 8357724Abstract: The invention concerns a process for controlling the stability or the droplets sized of simple water-in-oil emulsions, wherein a di-block or tri-block copolymer is used. A block is a hydrophilic block, the other block is a hydrophobic block. The invention concerns also a stabilized water-in-oil emulsion.Type: GrantFiled: May 16, 2006Date of Patent: January 22, 2013Assignee: Rhodia ChimieInventors: Sophie Deroo, Mikel Morvan
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Patent number: 8317953Abstract: A new process for forming MICs as well as three exemplary categories of MIC formulations is disclosed. MICs disclosed herein include a first exemplary category for which combustion can be initiated and sustained by either a heat (flame) source or electrical power, a second exemplary category of formulations that can be ignited and that sustain combustion at low pressures only with electrical power and a third exemplary category of formulations that can be ignited and extinguished at low pressures only with electrical power. The new process of MIC formulation provides energetic liquid oxidizers in place of traditional solvents, thus eliminating the need for solvent extraction. The energetic liquid oxidizer serves as a medium in which to suspend and grow the 3D nanostructure formed by the cross linked polymer (PVA). As a consequence, the 3D nanostructure entraps the liquid oxidizer, preventing it from evaporating and thereby eliminating the need for solvent extraction, preserves the 3D nanostructure shape.Type: GrantFiled: May 15, 2009Date of Patent: November 27, 2012Assignee: Digital Solid State Propulsion, LLCInventors: Wayne N. Sawka, Charles E. Grix
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Publication number: 20120261040Abstract: There is provided a gas-generating agent composition having a very small pressure exponent and an extremely low pressure dependence of the burning rate. The gas-generating agent composition of the present invention contains a nitrogen-containing organic compound as a fuel and ammonium nitrate as an oxidizing agent, wherein the ratio of the nitrogen-containing organic compound to the ammonium nitrate (the former/the latter: weight ratio) is 35/65 or less. In the gas-generating agent composition, a copper compound may be further blended in a proportion of more than 0 part by weight and 30 parts by weight or less based on 100 parts by weight of the total amount of the nitrogen-containing organic compound and ammonium nitrate. The copper compound is preferably basic copper nitrate. Further, the nitrogen-containing organic compound is preferably a guanidine derivative, particularly preferably a guanidine nitrate.Type: ApplicationFiled: November 19, 2010Publication date: October 18, 2012Applicants: DAICEL CORPORATION, THE UNIVERSITY OF TOKYOInventors: Mitsuru Arai, Yusuke Wada, Shogo Tomiyama, Yasunori Iwai, Shingo Oda
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Patent number: 8282750Abstract: Gas generating compositions include a combination of melamine and maleic hydrazide as a primary fuel; and a primary oxidizer consisting of ammonium nitrate and potassium chlorate. Gas generators and vehicle occupant protection systems incorporating the present compositions are also described.Type: GrantFiled: November 1, 2010Date of Patent: October 9, 2012Assignee: TK Holdings, Inc.Inventors: Scott M. Rambow, Deborah L. Hordos
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Publication number: 20120234196Abstract: This invention relates to the construction of a rocket motor and fuel system thereof and, in particular to a new and useful Viscous Liquid Monopropellant (VLM) rocket motor containing a liquid propellant that is pumped into the combustion chamber, atomised and then ignited. The atomisation step significantly increases the surface area of the propellant, delivering faster burn rates and smoother combustion. VLM is a non-Newtonian fluid containing both oxidisers and fuels. These monopropellants are comprised of a variety of liquid and solid components, mixed together to form a homogenous fluid, although heterogeneous in composition. The solid constituents are retained within the liquid phase by dispersion, suspension, bonding or chemical emulsification techniques, so as when a motive force is applied to the propellant, all the constituents are also transported, and held in correct proportion whilst doing so.Type: ApplicationFiled: March 14, 2012Publication date: September 20, 2012Inventors: Peter Joseph Beck, Adam Michael Berry
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Patent number: 8241444Abstract: Gas generating compositions include a primary fuel selected from fumaric acid, succinic acid, cyanuric acid, barbituric acid, and mixtures thereof; an oxidizer selected from phase stabilized ammonium nitrate, potassium perchlorate, and mixtures thereof; a secondary fuel selected from tetrazoles, bitetrazoles, salts of bitetrazoles, derivatives of bitetrazoles, and mixtures thereof; and an oxide selected from molybdenum trioxide, ferric (III) oxide, and mixtures thereof. Gas generators and vehicle occupant protection systems incorporating the present compositions are also described.Type: GrantFiled: June 1, 2010Date of Patent: August 14, 2012Assignee: TK Holdings, Inc.Inventors: Deborah L. Hordos, Slaven Domazet, Sean P. Burns
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Patent number: 8231747Abstract: An inflator assembly having an inflator body that forms a chamber wherein a quantity of a gas generating solid reacts to form gas. A quantity of gas treatment material is included to treat the formed gas to form a treated gas. At least one assembly exit opening permits the treated gas to exit the inflator assembly. The required gas generating solid has a flame temperature of no more than 1670 K with the inflator assembly having significant weight and volume reductions as compared to an otherwise identical performing inflator assembly that utilizes gas generating composition having higher flame temperatures.Type: GrantFiled: July 29, 2009Date of Patent: July 31, 2012Assignee: Autoliv ASP, Inc.Inventors: Ivan V. Mendenhall, Gary K. Lund
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Publication number: 20120180915Abstract: A detonator sensitive explosive emulsion composition includes an oxidizing phase including a supersaturated solution of ammonium nitrate and a fuel phase including sufficient emulsifying agent to permit dispersion of the oxidizing phase in the fuel phase. The detonator sensitive explosive emulsion composition further includes a crystallization temperature depressant consisting essentially of at least one of an amine and an amine nitrate.Type: ApplicationFiled: June 28, 2007Publication date: July 19, 2012Applicant: MAXAM NORTH AMERICAInventors: Carl Hermanus Lubbe, Joseph Lawrence Oliphant
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Publication number: 20120168046Abstract: A group of tertiary amine azides are useful as hypergolic fuels for hypergolic bipropellant mixtures. The fuels provide higher density impulses than monomethyl hydrazine (MMH) but are less toxic and have lower vapor pressures that MMH. In addition, the fuels have shorter ignition delay times than dimethylaminoethylazide (DMAZ) and other potential reduced toxicity replacements for MMH.Type: ApplicationFiled: May 18, 2010Publication date: July 5, 2012Applicant: CFD RESEARCH CORPORATIONInventor: Debasis Sengupta
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Patent number: 8187397Abstract: An explosive emulsion to be used in conjunction with a gas-producing agent, such as sodium nitrite, to form an explosive emulsion with a density between 0.50 g/cm3 and 0.90 g/cm3. The present invention also includes the method for producing the explosive emulsion. The explosive emulsion is stable for at least 96 hours with nitrogen bubbles, having a predetermined dimension range, homogenously distributed. To maintain this low-density explosive emulsion stable, between 84% and 95% by weight of an oxidizing solution is combined with 5% to 16% by weight of a fuel solution. The fuel solution includes solid cacao fat as a stabilizing agent and stearic acid to prevent the combination of the nitrogen bubbles. The method for producing the oxidizing solution includes combining ammonium nitrate, sodium nitrate, thiourea, urea, and water at a temperature between 80 and 90 degrees centigrade. In another step of the method, a fuel solution is produced by combining an emulsifier, oil, diesel No.Type: GrantFiled: November 12, 2010Date of Patent: May 29, 2012Assignee: Industrias Minco, S.A.C.Inventors: Pio Francisco Perez Cordova, Luis Alfredo Cardenas Lopez
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Explosive composition having a first organic material infiltrated into a second microporous material
Publication number: 20120118448Abstract: An energetic composition with controlled detonation having at least a first organic material and a second material, where the second material is a porous material (micro-, meso-, or macroporous), having a pore ratio of at least 10% and preferably greater than 50%, and the first material is, at least partially, infiltrated into the pores of the second material. A mixture containing such a composition, and a method for manufacturing such a composition and such a mixture. Additionally, a method for fragmenting or expanding a microporous immaterial at nanoscale.Type: ApplicationFiled: October 6, 2008Publication date: May 17, 2012Applicant: INSTITUT FRANCO-ALLEMAND DE RECHERCHES DE SAINT-LOUISInventors: Marc Comet, Denis Spitzer, Vincent Pichot -
Publication number: 20120118449Abstract: Alkali metal perchlorate-containing gas generant compositions which, upon combustion, produce or result in an improved effluent and related methods for generating an inflation gas for use in an inflatable restraint system are provided. Such alkali metal perchlorate-containing gas generant compositions include at least one alkali metal perchlorate present with a mean particle size in excess of 100 microns. Such alkali metal perchlorate-containing gas generant compositions also include or contain a suitable non-azide, organic, nitrogen-containing fuel and at least one copper-containing compound selected from the group consisting of basic copper nitrate, cupric oxide, copper diammine dinitrate-ammonium nitrate mixture wherein ammonium nitrate is present in the mixture in a range of about 3 to about 90 weight percent, copper diammine bitetrazole, a copper-nitrate complex resulting from reaction of 5-aminotetrazole with basic copper nitrate and combinations thereof.Type: ApplicationFiled: January 23, 2012Publication date: May 17, 2012Applicant: Autoliv ASP, Inc.Inventors: Michael W. BARNES, Ivan V. Mendenhall, Robert D. Taylor
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Patent number: 8157935Abstract: This invention relates to explosive grade ammonium nitrate porous granules. The granules are produced in a fluidized bed and are formed through a combination of layering and agglomeration to produce ammonium nitrate granules are spherical in shape, smooth, hard and dry and do not break down easily during handling. Ammonium nitrate granules of a specific size range and density can be prepared and the size range and density of the granules can be varied, depending on the application of the granules, and this has particular advantages in preparing granules for use in ANFO explosive compositions.Type: GrantFiled: August 2, 2007Date of Patent: April 17, 2012Assignee: Omnia Fertilizer LimitedInventors: Francois Christiaan Visagie, Rainer Ralf Pille
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Patent number: 8142582Abstract: An explosive formulation used in blasting operations such as, but not limited to, mining operations and the like. The formulation is composed of a modified form of Ammonium Nitrate Fuel Oil (ANFO) explosives which have been modified by the incorporation of a solid fuel material. The formulation comprising a dry granular solid component, a liquid high-boiling point component of about 4% by weight, and a solid fuel material. The solid fuel material comprising vitrinite macerals, liptinite macerals, and inert macerals fusinite and semifusinite, and is characterized as (1) having a concentrate of liptinite that is higher than normal coals, and (2) having a concentrate of pseudovitrinite that is significantly lower than normal coals.Type: GrantFiled: August 8, 2005Date of Patent: March 27, 2012Assignee: Carbo*Prill, Inc.Inventors: Dennis R. Wilzbacher, Michael L. Schiele, John C. Harman
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Patent number: 8137627Abstract: A hydrogen generator includes a plurality of fuel sticks each of which includes a hydrogen release compound configured to generate hydrogen by a chemical reaction, a pressure-resistant container configured to store therein the plurality of fuel sticks, and a controller configured to carry out control in such a manner that hydrogen is generated selectively from the plurality of fuel sticks.Type: GrantFiled: March 4, 2010Date of Patent: March 20, 2012Assignee: Qinetiq LimitedInventors: Toshio Horiguchi, Robert W. Reeve, Darren P. Scattergood
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Patent number: 8114230Abstract: High fidelity, non-explosive training aids (simulants) which simulate the properties of the explosive composition 4 (C-4) are described. The materials of the training aid are formulated to simulate the appearance, manifest rheological properties (pliability, plasticity), density, and “feel” of the actual C-4 as well as simulate the combustion behavior of C-4 when subjected to the informal “flame test” used to identify the material in the field. Additionally, the materials give the same signature as actual C-4 when tested by portable detection equipment such as electronic trace detectors or color forming reagents. The materials also generate the same imagery as C-4 when subjected to X-ray analysis.Type: GrantFiled: October 8, 2010Date of Patent: February 14, 2012Assignee: The United States of America as represented by the Secretary of the NavyInventor: Kenneth E. Basom
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Publication number: 20120018064Abstract: An explosive suspension used in blasting operations such as, but not limited to, mining operations and the like, composed of ammonium nitrate (AN) based explosives incorporating a solid fuel material and a suspending agent. The suspension comprises an oxidizer component, a solid fuel material, optionally up to 10 weight % of a liquid fuel component, and a suspending agent. The solid fuel material comprises vitrinite macerals, liptinite macerals, and inert macerals fusinite and semifusinite, and is characterized as (1) having a concentration of liptinite that is higher than normal coals, and (2) having a concentration of pseudovitrinite that is significantly lower than normal coals.Type: ApplicationFiled: March 19, 2009Publication date: January 26, 2012Inventors: Dennis R. Wilzbacher, Mike L. Schiele, John C. Harman, Andrew E. Fenwick
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Publication number: 20110272071Abstract: Hypergolic liquid or gel fuel mixtures utilized in bipropellant propulsion systems are disclosed as replacements for fuels containing toxic monomethylhydrazine. The fuel mixtures include one or more amine azides mixed with one or more tertiary diamine, tri-amine or tetra-amine compounds. The fuel mixtures include N,N,N?,N?-tetramethylethylenediamine (TMEDA) mixed with 2-N,N-dimethylaminoethylazide (DMAZ), TMEDA mixed with tris(2-azidoethyl)amine (TAEA), and TMEDA mixed with one or more cyclic amine azides. Each hypergolic fuel mixture provides a reduced ignition delay for combining with an oxidant in fuel propellant systems. The fuel mixtures have advantages in reduced ignition delay times compared to ignition delay times for each unmixed component, providing a synergistic effect which was not predictable from review of each component's composition.Type: ApplicationFiled: July 25, 2011Publication date: November 10, 2011Applicant: The United States of America as represented by the Secretary of the ArmyInventors: William H. Stevenson, III, LaShanda D. Felton, Zhu Slocum-Wang
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Patent number: 8038812Abstract: A method for manufacture and delivery of an emulsion explosive having a discontinuous oxidizer solution phase, a continuous fuel phase, and an emulsifier, the method comprising: (a) providing an emulsion manufacturing system; (b) conveying an oxidizer solution phase to the emulsion manufacturing system at a pre-determined pressure; (c) conveying a fuel phase to the emulsion manufacturing system at a pre-determined pressure; (d) forming an emulsion from the oxidizer solution and the fuel phases using only a portion of the pre-determined pressures so as to provide a usable residual pressure after the formation of the emulsion; and (e) utilizing the residual pressure to non-mechanically deliver the emulsion to a pre-determined location.Type: GrantFiled: August 4, 2010Date of Patent: October 18, 2011Assignee: Dyno Nobel, Inc.Inventors: John B Halander, Casey L. Nelson, Clark D. Bonner
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Patent number: 7985310Abstract: This invention relates to granules comprising a homogenous mixture of metal flakes and/or metal powder and metal oxide powder, and a binder. The invention also relates to a process for producing such granules. The process includes the step of forming a mixture of metal flakes and/or metal powder and metal oxide powder, forming the mixture into a homogenous blend, adding the blend, together with a binder, to a granulator to form granules, and drying the granules. Granules so formed containing aluminum, aluminum oxide and iron oxide find particular use as sensitizers and energizers in explosives compositions.Type: GrantFiled: May 12, 2010Date of Patent: July 26, 2011Inventor: Denis Gordon Verity
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Patent number: 7972454Abstract: A method of preparing a gassed water-in-oil emulsion explosives composition from a gasser solution of an inorganic nitrate, an ammonium species and an optional accelerator which is added to an emulsion explosive composition, reacts and forms gas bubbles is disclosed. The emulsion explosive composition is composed of a discontinuous aqueous phase, a continuous water immiscible organic phase, and an emulsifier. The reaction between the gasser solution and the emulsion explosive composition is such that the emulsifier does not undergo chemical attack.Type: GrantFiled: August 27, 2001Date of Patent: July 5, 2011Assignee: Orica Australia Pty Ltd.Inventors: Helen O'Hara, David Stow, David Edwin Yates
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Publication number: 20110120603Abstract: An explosive emulsion to be used in conjunction with a gas-producing agent, such as sodium nitrite, to form an explosive emulsion with a density between 0.50 g/cm3 and 0.90 g/cm3. The present invention also includes the method for producing the explosive emulsion. The explosive emulsion is stable for at least 96 hours with nitrogen bubbles, having a predetermined dimension range, homogenously distributed. To maintain this low-density explosive emulsion stable, between 84% and 95% by weight of an oxidizing solution is combined with 5% to 16% by weight of a fuel solution. The fuel solution includes solid cacao fat as a stabilizing agent and stearic acid to prevent the combination of the nitrogen bubbles. The method for producing the oxidizing solution includes combining ammonium nitrate, sodium nitrate, thiourea, urea, and water at a temperature between 80 and 90 degrees centigrade. In another step of the method, a fuel solution is produced by combining an emulsifier, oil, diesel No.Type: ApplicationFiled: November 12, 2010Publication date: May 26, 2011Inventors: Pio Francisco Perez Cordova, Luis Alfredo Cardenas Lopez
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Publication number: 20110114234Abstract: A readily gasified additive has been added to AN (ammonium nitrate) based bulk explosives (ANFO, emulsions, and combinations thereof) with positive results, due to the time, temperature, and pressure conditions generated in a blasthole. The preferred final explosive mixture is primarily comprised of AN, fuel oil, and a carbonaceous additive material that is characterized as being readily gasified as indicated by its rapid release of volatile materials and char formation, the high internal porosity and surface area of the base material and its char, and the uniform distribution of catalytic mineral matter throughout the material. It is understood that other readily gasified additives may be similarly effective.Type: ApplicationFiled: August 13, 2010Publication date: May 19, 2011Inventors: Andrew E. Fenwick, Dennis R. Wilzbacher, Michael L. Schiele, John C. Harman
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Patent number: 7942989Abstract: An initiator explosive for detonating a second explosive that includes nanocrystalline silicon containing a plurality of pores and a solid state oxidant disposed within said pores.Type: GrantFiled: December 9, 2003Date of Patent: May 17, 2011Assignee: The Regents of the University of CaliforniaInventors: Michael J. Sailor, Frederic V. Mikulec, Joseph D. Kirtland
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Patent number: 7938920Abstract: An explosive composition is provided that is comprised of a Heavy ANFO and grain hulls. In one embodiment, the grain hulls are comprised of rice hulls. The grain hulls serve both as an inert bulking additive that reduces the density of the composition and as a sensitizer that reduces the energy needed to reliably detonate the composition. Also provided is a method for manufacturing an explosive composition comprised of Heavy ANFO and grain hulls, such as rice hulls. Additionally, a method of using an explosive comprised of ANFO and grain hulls in a mining operation is disclosed.Type: GrantFiled: October 17, 2005Date of Patent: May 10, 2011Inventors: Kevin H. Waldock, Christopher J. Kulish
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Patent number: 7927437Abstract: A structured, self-assembled nanoenergetic material is disclosed that includes a nanostructure comprising at least one of the group consisting of a fuel and an oxidizer and a plurality of substantially spherical nanoparticles comprising at least the other of the group consisting of a fuel and an oxidizer. The spherical particles are arranged around the exterior surface area of said nanorod. This structured particle assures that the oxidizer and the fuel have a high interfacial surface area between them. Preferably, the nanostructure is at least one of a nanorod, nanowire and a nanowell, and the second shaped nanoparticle is a nanosphere.Type: GrantFiled: October 28, 2005Date of Patent: April 19, 2011Assignee: The Curators of the University of MissouriInventors: Shubhra Gangopadhyay, Rajesh Shende, Senthil Subramanian, Keshab Gangopadhyay, Shameem Hasan
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Patent number: 7918949Abstract: Disclosed is a heat-treated oxidizing agent for gas generating compositions which is obtained by mixing ammonium nitrate with an inorganic compound having as an element one or two or more metal atoms selected from the group consisting of Cu, Fe, Ni, Zn, Co, Mn and Ti and subjecting the mixture to heat treatment, and a gas generating composition containing the same. This invention provides a gas generating composition comprising ammonium nitrate, which can be safely produced, does not change in density with phase transition, and has sufficient combustibility.Type: GrantFiled: March 29, 2007Date of Patent: April 5, 2011Assignee: Nippon Kayaku Kabushiki KaishaInventors: Dairi Kubo, Eishi Sato, Kenjiro Ikeda
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Patent number: 7914631Abstract: An azide-free gas-generating composition for use in gas generators for safety arrangements, in particular in gas generators for vehicle occupant restraint systems, includes a fuel and an oxidizer. The fuel is a compound having a melting point of at least 120 degrees C., and is selected from the group of nitrogenous organic compounds and of aliphatic dicarboxylic acids, and mixtures, derivatives and salts thereof. The oxidizer comprises tetrakis(2,2,2-trinitroethyl)orthocarbonate (TNEOC), with the TNEOC being present in a proportion of at least 10% by weight of the composition.Type: GrantFiled: June 13, 2005Date of Patent: March 29, 2011Assignee: TRW Automotive Airbag Systems GmbHInventors: Siegfried Zeuner, Uwe Reimann, Roland Schropp, Karl-Heinz Roedig