WO2018018174A1 - Capsule pyrotechnique, composition explosive et utilisations associées - Google Patents

Capsule pyrotechnique, composition explosive et utilisations associées Download PDF

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Publication number
WO2018018174A1
WO2018018174A1 PCT/CL2017/050037 CL2017050037W WO2018018174A1 WO 2018018174 A1 WO2018018174 A1 WO 2018018174A1 CL 2017050037 W CL2017050037 W CL 2017050037W WO 2018018174 A1 WO2018018174 A1 WO 2018018174A1
Authority
WO
WIPO (PCT)
Prior art keywords
capsule
capsule according
explosive composition
explosive
pyrotechnic
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CL2017/050037
Other languages
English (en)
Spanish (es)
Inventor
Mariano LANZA MEGUINOFF
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nonexp LLC
Original Assignee
Nonexp LLC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nonexp LLC filed Critical Nonexp LLC
Publication of WO2018018174A1 publication Critical patent/WO2018018174A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C06—EXPLOSIVES; MATCHES
    • C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
    • C06B29/00—Compositions containing an inorganic oxygen-halogen salt, e.g. chlorate, perchlorate
    • C06B29/02—Compositions containing an inorganic oxygen-halogen salt, e.g. chlorate, perchlorate of an alkali metal
    • C—CHEMISTRY; METALLURGY
    • C06—EXPLOSIVES; MATCHES
    • C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
    • C06B33/00—Compositions containing particulate metal, alloy, boron, silicon, selenium or tellurium with at least one oxygen supplying material which is either a metal oxide or a salt, organic or inorganic, capable of yielding a metal oxide
    • C—CHEMISTRY; METALLURGY
    • C06—EXPLOSIVES; MATCHES
    • C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
    • C06B33/00—Compositions containing particulate metal, alloy, boron, silicon, selenium or tellurium with at least one oxygen supplying material which is either a metal oxide or a salt, organic or inorganic, capable of yielding a metal oxide
    • C06B33/06—Compositions containing particulate metal, alloy, boron, silicon, selenium or tellurium with at least one oxygen supplying material which is either a metal oxide or a salt, organic or inorganic, capable of yielding a metal oxide the material being an inorganic oxygen-halogen salt
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D3/00—Hot-water central heating systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B3/00—Blasting cartridges, i.e. case and explosive
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B3/00—Blasting cartridges, i.e. case and explosive
    • F42B3/10—Initiators therefor
    • F42B3/11—Initiators therefor characterised by the material used, e.g. for initiator case or electric leads
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B3/00—Blasting cartridges, i.e. case and explosive
    • F42B3/28—Cartridge cases characterised by the material used, e.g. coatings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42D—BLASTING
    • F42D3/00—Particular applications of blasting techniques
    • F42D3/04—Particular applications of blasting techniques for rock blasting

Definitions

  • Pyrotechnic capsule containing a propellant formula for breaking hard materials such as, and not limited to, rock / concrete.
  • the invention comprises the pyrotechnic capsule, with an explosive formula, an explosion method and uses thereof.
  • the present invention relates to a complete explosive system for breaking or fracturing hard material, such as rock or concrete, more specifically describes an explosive composition, a system for containing it and its use.
  • triggers are widely used for breaking, for example, rock and / or concrete.
  • the good use of the energy generated in the detonation is essential in order to carry out an efficient process and minimize the dangers.
  • explosives are effective but not efficient in terms of energy use, are dangerous and, therefore, are subject to strict regulations regarding their use, storage and transportation;
  • the use of explosives has the disadvantages of generating large quantities and volumes of large particulate material that are dispersed at high speed, with the danger that this entails and if they are used underground, dangerous gases are produced.
  • explosives can limit the depth of the rock that can be removed during a blasting episode.
  • An alternative to explosives for breaking hard material is the gas directional pressure system.
  • a hole is drilled in a rock and a directional gas pressure device is inserted into it.
  • a chemical reaction starts that gives off a large volume of gas.
  • the pressure inside the hole builds up and is relieved by the division of the rock.
  • the detonation velocity of pyrotechnic charges used in directional gas pressure devices is of the order of 4 to 6 meters per second. These devices do not create a shock wave.
  • the gas directional pressure system is more efficient than explosive charges in terms of the amount of energy released to split a rock or demolish a building. Another advantage of the gas directional pressure system is that the charges are much safer than explosives. An additional advantage of this system is that it creates much less noise than detonating explosives and does not cause problematic emissions of toxic gases.
  • patent application No. W097 / 2168 describes a vehicle adapted to drill holes in a material front and insert explosive charges.
  • the present invention seeks to provide an improved pyrotechnic capsule for use in mining and demolition or any process that requires Rupture of hard material.
  • the present invention combines the advantages of directional gas pressure systems with explosives.
  • FIG. 1 Shows the process flow chart.
  • One aspect of the present invention relates to a pyrotechnic capsule containing a propellant formula for rock / concrete rupture, the capsule comprising, an explosive composition, an explosion method and uses thereof.
  • An embodiment of the present invention provides a pyrotechnic capsule (PBCpyrothecnic blasting capsule) corresponding to a thermoplastic tube, which can have different diameters and multiple lengths, which allows it to contain different weights in grams, according to the needs of explosion
  • the capsule can have diameters of 1, 125 " and 1, 75 " and multiple lengths: eight -1 Tube ⁇ er; g ⁇ -3 Tube lenghi
  • P3C 50 grams 4 1 ⁇ 2 "N / A
  • P3C 50 150 grams 1 ve 43/8 "
  • the pyrotechnic capsule uses a starting energy of 2.3 cal / g, it is created by precise dosing of a combination of chemical products (oxidizers and fuels) for a density of 1.45 g / ce, calibrated to not generate toxic gases.
  • an explosive composition contained in the pyrotechnic capsule, which corresponds to a propellant formula that deflates at a rate of 500-800 Ft / s.
  • Gas generation technology can be combined with a formula rich in oxidizing agents which contains the following components Ammonium Nitrate, Sodium Nitrate, Potassium Perchlorate, Calcium Nitrate, BaCr04, BaCI03 and Ba02 with a particle size in the range of 40, 50, 80, 200, 270 and 400 mesh.
  • the combustible components are sugars (with different chemical structures), FeSi, Mg / AI with particle sizes of 80 to 200 mesh. All variations of oxidizing formulas (mass and composition ratios), all have similar values of heat and pressure.
  • the reasons for masses of oxidizing compounds are in the range of 47% to 75% by weight.
  • the mass ratios of the fuel matrix of the formulations are in the ranges of 8% to 22%.
  • the main and differentiating feature of the present invention is the energy absorption process.
  • the oxidant goes through three different changes in the crystalline and fusion structure.
  • the oxidant point inside the fusion capsule begins to decompose exo-thermally immediately.
  • the reaction produces a concomitant gas evolution.
  • the formulation creates larger K-bars (47 to 90) than other products similar to creating excessive particle velocity.
  • the chemical reactions of the formulation occur slowly at the beginning (induction period), because there are different particle sizes and the catalyst present have different melting points, the reaction rate increases progressively as the reaction progresses as the amount of Initial heat continues to increase also increases the reaction of the catalyst.
  • the composition contains a mixture of oxidizing and reducing agents composed of potassium perchlorate (KCI0 4 ), Cab-O-Sil, Lactose, Ferrosilicon and Magnalium, preferably the composition corresponds to 57% of KCI04, 11% Magnalium, 21% Lactose and 11% Ferrosilicon (% w / w).
  • the thermal decomposition is improved by the distribution of the particle size of the composition, preferably, the distribution of the particle size for the formulation corresponds to the range between 50 - 140 mesh, the increased surface area and the use of the Magnalium drafting agent improves the thermal kinetic properties of the pyrotechnic composition.
  • Potassium perchlorate (KCI0 4 ) is an oxidant, colorless, crystalline that melts at approximately 610 ° C. It is one of the most common oxidants used in fireworks, fulminant ammunition capsules, starter explosives, and is used in various ways in the propellers, flash compositions, stars and sparklers. It has been used as a solid rocket propellant, although in that application, it has mostly been replaced by higher performance ammonium perchlorate. KCI04 has the lowest solubility of all perchlorates (2.08 g KCI04 in 100 g H20 at 25 ° C)
  • the perchlorate ion CI04 " is more stable than chlorate nitrates.
  • the KCI04 within the capsule is capable of releasing its four oxygen atoms for the complete combustion of all elements. This completed reaction is possible due to the single dosage. of the formulation
  • the energy produced during the reaction is approximately 1500 cal / g (1.70 RWS RBS2.9), indicating a complete reaction.
  • Cab-O-Sil is an, amorphous, synthetic pyrolysis silicon dioxide. Due to its inert nature, it has been used in foods such as kethcup as well as in shampoo and some cosmetics. When mixed in liquid resin, Cabosil functions as a resin thickener (flow control agent) and sometimes as an anti-sedimentation, an anti-caking agent.
  • Lactose disaccharide consisting of beta-D-ga lactose and ⁇ -D-glucose molecules linked by a ⁇ 1-4 glycosidic bond. Lactose constitutes about 2-8% of the solids in milk, it is used as fuel.
  • Ferrosilicon or ferrosilicium is an alloy of iron and silicon with between 15 and 90% silicon. It contains a high proportion of iron silicones. Its melting point is approximately 1,200 s Ca 1,250 s C with a boiling point of 2355 ° C. It also contains about 1 to 2% calcium and aluminum.
  • Magnalium is an aluminum alloy with 5-50% magnesium. Small amounts of other elements are added to improve hardness. It is used in engineering and pyrotechnics.
  • the particle size of KCI04 and Fe / Si fuels has an effect on gas evolution, and affects the combustion rate and ignition sensitivity of the capsule. These parameters reflect the kinetic effects of solid state chemical reactions of the formulation. Different particle sizes produce a higher combustion rate and a lower ignition sensitivity.
  • FIG. 1 shows the process flow chart comprising the following steps:
  • Perchlorate and CAB-O-SIL should be mixed at approximately 12 rpm for at least one hour; Ferrosilicon, Magnesium and Lactose should be mixed at approximately 9 rpm for at least 2 hours.
  • the composition is mixed in two steps, with a specific particle size of 80 mesh, at rpm and specific times and a final mixture for 2: 30 hrs at 9 rpm.
  • the pyrotechnic capsule of the invention can be used for the demolition of axial walls, foundations, pillars, beams, bridges, support bridge columns, piles, cantilever columns, Foundation Rock, tunnel.
  • the present invention uses the tensile strength of the rock that is on average 20 times weaker in tensile strength than in compressive strength.
  • the tensile force is applied by a rapid release of large volumes of gas generated by the composition in the cartridge.
  • He Cartridge is embedded in the rock by means of a drilling and tamping procedure and is turned on electrically using an approved electric splitter. It is specifically designed to break rock / concrete with minimal sound, vibration and rock blasting.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Thermal Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Disintegrating Or Milling (AREA)
  • Processing Of Solid Wastes (AREA)
  • Manufacturing Of Micro-Capsules (AREA)
  • Drilling And Exploitation, And Mining Machines And Methods (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Medicinal Preparation (AREA)

Abstract

L'invention concerne une capsule pyrotechnique qui contient une formule d'agent propulseur pour la rupture de matériaux durs comme, par exemple, et sans se limiter à ceux-ci, la roche/le béton. Ladite invention comprend la capsule pyrotechnique, avec une formule explosive, un procédé d'explosion et des utilisations associées. Domaine de l'invention: La présente invention concerne un système explosif complet pour la rupture ou la fracture de matériau dur, comme la roche ou le béton, plus spécifiquement, une composition explosive, un système pour la contenir et son utilisation.
PCT/CL2017/050037 2016-07-29 2017-07-28 Capsule pyrotechnique, composition explosive et utilisations associées Ceased WO2018018174A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CL2016001929A CL2016001929A1 (es) 2016-07-29 2016-07-29 Cápsula pirotécnica y su uso en la ruptura de materiales duros como rocas, concreto y hormigón.
CL1929-2016 2016-07-29

Publications (1)

Publication Number Publication Date
WO2018018174A1 true WO2018018174A1 (fr) 2018-02-01

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CL2017/050037 Ceased WO2018018174A1 (fr) 2016-07-29 2017-07-28 Capsule pyrotechnique, composition explosive et utilisations associées

Country Status (3)

Country Link
AR (1) AR109198A1 (fr)
CL (1) CL2016001929A1 (fr)
WO (1) WO2018018174A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112765853A (zh) * 2021-01-19 2021-05-07 中国科学院武汉岩土力学研究所 一种爆破振动可靠度设计方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2395714A (en) * 2003-02-20 2004-06-02 Raymond Townley-Malyon Pyrotechnic rock and concrete breaking system
US20070107820A1 (en) * 2005-02-04 2007-05-17 Christopher Schmidt Gas-generating compositions, fracturing system and method of fracturing material
ES2339208A1 (es) * 2008-10-30 2010-05-17 Anita Atkins Artificio para romper roca y hormigon mediante una mezcla pirotecnica contenida en un cilindro de material plastico que incluye un inflamador electrico conectado a dos cables de diferente color y un sistema de cebado consistente en varios cabos de mecha.
ES2523879T3 (es) * 2010-08-26 2014-12-02 Controlled Blasting Solutions Limited Dispositivo de presión de gas direccional

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2395714A (en) * 2003-02-20 2004-06-02 Raymond Townley-Malyon Pyrotechnic rock and concrete breaking system
US20070107820A1 (en) * 2005-02-04 2007-05-17 Christopher Schmidt Gas-generating compositions, fracturing system and method of fracturing material
ES2339208A1 (es) * 2008-10-30 2010-05-17 Anita Atkins Artificio para romper roca y hormigon mediante una mezcla pirotecnica contenida en un cilindro de material plastico que incluye un inflamador electrico conectado a dos cables de diferente color y un sistema de cebado consistente en varios cabos de mecha.
ES2523879T3 (es) * 2010-08-26 2014-12-02 Controlled Blasting Solutions Limited Dispositivo de presión de gas direccional

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112765853A (zh) * 2021-01-19 2021-05-07 中国科学院武汉岩土力学研究所 一种爆破振动可靠度设计方法

Also Published As

Publication number Publication date
AR109198A1 (es) 2018-11-07
CL2016001929A1 (es) 2017-03-24

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