US3421954A - Melt explosive composition having a matrix of an inorganic oxygen supplying salt - Google Patents
Melt explosive composition having a matrix of an inorganic oxygen supplying salt Download PDFInfo
- Publication number
- US3421954A US3421954A US654393A US3421954DA US3421954A US 3421954 A US3421954 A US 3421954A US 654393 A US654393 A US 654393A US 3421954D A US3421954D A US 3421954DA US 3421954 A US3421954 A US 3421954A
- Authority
- US
- United States
- Prior art keywords
- matrix
- melt
- melt explosive
- fuel
- inorganic oxygen
- 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.)
- Expired - Lifetime
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- 239000000203 mixture Substances 0.000 title description 28
- 239000002360 explosive Substances 0.000 title description 27
- 150000003839 salts Chemical class 0.000 title description 14
- 239000011159 matrix material Substances 0.000 title description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title 1
- 229910052760 oxygen Inorganic materials 0.000 title 1
- 239000001301 oxygen Substances 0.000 title 1
- 239000000446 fuel Substances 0.000 description 17
- 229920001732 Lignosulfonate Polymers 0.000 description 15
- 239000004117 Lignosulphonate Substances 0.000 description 15
- 235000019357 lignosulphonate Nutrition 0.000 description 15
- 239000000155 melt Substances 0.000 description 8
- PAWQVTBBRAZDMG-UHFFFAOYSA-N 2-(3-bromo-2-fluorophenyl)acetic acid Chemical compound OC(=O)CC1=CC=CC(Br)=C1F PAWQVTBBRAZDMG-UHFFFAOYSA-N 0.000 description 6
- 230000008018 melting Effects 0.000 description 6
- 238000002844 melting Methods 0.000 description 6
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 4
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 4
- 239000000654 additive Substances 0.000 description 4
- 239000004202 carbamide Substances 0.000 description 4
- 239000004615 ingredient Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 230000035945 sensitivity Effects 0.000 description 4
- 239000011734 sodium Substances 0.000 description 4
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 3
- 239000011575 calcium Substances 0.000 description 3
- 229910052791 calcium Inorganic materials 0.000 description 3
- 239000003575 carbonaceous material Substances 0.000 description 3
- 229920005610 lignin Polymers 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 229910052708 sodium Inorganic materials 0.000 description 3
- VWDWKYIASSYTQR-UHFFFAOYSA-N sodium nitrate Inorganic materials [Na+].[O-][N+]([O-])=O VWDWKYIASSYTQR-UHFFFAOYSA-N 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 125000001273 sulfonato group Chemical group [O-]S(*)(=O)=O 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 2
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- 239000005864 Sulphur Substances 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 229920005550 ammonium lignosulfonate Polymers 0.000 description 2
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 description 2
- 238000005422 blasting Methods 0.000 description 2
- 229920005551 calcium lignosulfonate Polymers 0.000 description 2
- ZCCIPPOKBCJFDN-UHFFFAOYSA-N calcium nitrate Chemical compound [Ca+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O ZCCIPPOKBCJFDN-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 230000000994 depressogenic effect Effects 0.000 description 2
- 230000005496 eutectics Effects 0.000 description 2
- 229930195733 hydrocarbon Natural products 0.000 description 2
- 150000002430 hydrocarbons Chemical class 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910052752 metalloid Inorganic materials 0.000 description 2
- 150000002738 metalloids Chemical class 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 239000011591 potassium Substances 0.000 description 2
- 229920005552 sodium lignosulfonate Polymers 0.000 description 2
- 239000001993 wax Substances 0.000 description 2
- HZTVIZREFBBQMG-UHFFFAOYSA-N 2-methyl-1,3,5-trinitrobenzene;[3-nitrooxy-2,2-bis(nitrooxymethyl)propyl] nitrate Chemical compound CC1=C([N+]([O-])=O)C=C([N+]([O-])=O)C=C1[N+]([O-])=O.[O-][N+](=O)OCC(CO[N+]([O-])=O)(CO[N+]([O-])=O)CO[N+]([O-])=O HZTVIZREFBBQMG-UHFFFAOYSA-N 0.000 description 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
- BDAGIHXWWSANSR-UHFFFAOYSA-M Formate Chemical compound [O-]C=O BDAGIHXWWSANSR-UHFFFAOYSA-M 0.000 description 1
- 229910002651 NO3 Inorganic materials 0.000 description 1
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 1
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical class O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 1
- ZMZDMBWJUHKJPS-UHFFFAOYSA-M Thiocyanate anion Chemical compound [S-]C#N ZMZDMBWJUHKJPS-UHFFFAOYSA-M 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052788 barium Inorganic materials 0.000 description 1
- IWOUKMZUPDVPGQ-UHFFFAOYSA-N barium nitrate Inorganic materials [Ba+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O IWOUKMZUPDVPGQ-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000005474 detonation Methods 0.000 description 1
- 239000000374 eutectic mixture Substances 0.000 description 1
- 150000004675 formic acid derivatives Chemical class 0.000 description 1
- ZMZDMBWJUHKJPS-UHFFFAOYSA-N hydrogen thiocyanate Natural products SC#N ZMZDMBWJUHKJPS-UHFFFAOYSA-N 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 229910001960 metal nitrate Inorganic materials 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 239000003607 modifier Substances 0.000 description 1
- 150000002823 nitrates Chemical class 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Inorganic materials [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000037452 priming Effects 0.000 description 1
- 239000011369 resultant mixture Substances 0.000 description 1
- 235000010344 sodium nitrate Nutrition 0.000 description 1
- 239000004317 sodium nitrate Substances 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-L sulfite Chemical compound [O-]S([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-L 0.000 description 1
- BDHFUVZGWQCTTF-UHFFFAOYSA-N sulfonic acid Chemical compound OS(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-N 0.000 description 1
- 238000005979 thermal decomposition reaction Methods 0.000 description 1
- 150000003567 thiocyanates Chemical class 0.000 description 1
- DHCDFWKWKRSZHF-UHFFFAOYSA-L thiosulfate(2-) Chemical compound [O-]S([S-])(=O)=O DHCDFWKWKRSZHF-UHFFFAOYSA-L 0.000 description 1
- 150000004764 thiosulfuric acid derivatives Chemical class 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C06—EXPLOSIVES; MATCHES
- C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
- C06B23/00—Compositions characterised by non-explosive or non-thermic constituents
- C06B23/002—Sensitisers or density reducing agents, foam stabilisers, crystal habit modifiers
- C06B23/004—Chemical sensitisers
-
- C—CHEMISTRY; METALLURGY
- C06—EXPLOSIVES; MATCHES
- C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
- C06B31/00—Compositions containing an inorganic nitrogen-oxygen salt
- C06B31/28—Compositions containing an inorganic nitrogen-oxygen salt the salt being ammonium nitrate
- C06B31/30—Compositions containing an inorganic nitrogen-oxygen salt the salt being ammonium nitrate with vegetable matter; with resin; with rubber
-
- C—CHEMISTRY; METALLURGY
- C06—EXPLOSIVES; MATCHES
- C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
- C06B45/00—Compositions or products which are defined by structure or arrangement of component of product
- C06B45/04—Compositions or products which are defined by structure or arrangement of component of product comprising solid particles dispersed in solid solution or matrix not used for explosives where the matrix consists essentially of nitrated carbohydrates or a low molecular organic explosive
-
- C—CHEMISTRY; METALLURGY
- C06—EXPLOSIVES; MATCHES
- C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
- C06B47/00—Compositions in which the components are separately stored until the moment of burning or explosion, e.g. "Sprengel"-type explosives; Suspensions of solid component in a normally non-explosive liquid phase, including a thickened aqueous phase
Definitions
- melt explosive compositions normally comprise a matrix of an inorganic oxygen-supplying salt with a fuel such as a solid organic explosive, carbonaceous material or particulate light metal dispersed therein. Such explosives may be employed in a variety of commercial or military applications. It has now been found that the sensitivity of melt explosive compositions may be improved by incorporating therein a soluble lignosulphonate.
- This invention relates to melt explosive compositions and in particular to a means whereby the sensitivity of melt explosives may be substantially improved.
- melt explosive an explosive composition produced by the steps of melting under the influence of heat one or more inorganic oxygen-supplying salts and while molten, adding thereto a fuel, the resultant mixture thereafter being allowed to cool to solidify in shaped or cast for-m.
- melt explosives may find useful application in nearly all commercial blasting operations and are particularly useful as economic substitutes for blasting agents of the type commonly packaged in sealed metal containers.
- melt explosive compositions may be substantially improved by incorporating therein a soluble lignosulphonate.
- polymeric nature of this additive leads to useful improvements in the strengths and physical integrities of the derived products.
- the improved melt explosive composition of the invention comprises essentially at least one inorganic oxygen-supplying salt, a fuel and a soluble lignosulphonate.
- the ingredients are combined together while the oxygensupplying salt is in the molten state. the composition thereafter being cooled to solidification.
- a preferred inorganic oxygen-supplying salt for use in the melt explosive of this invention is ammonium nitrate. It will in some cases be advantageous to replace some or all of the ammonium nitrate by other metal nitrates such as sodium, potassium, barium and calcium nitrate. It will be known by those skilled in the art, for example, that eutectic mixtures of ammonium nitrate and sodium nitrate can be melted at lower temperatures than can pure ammonium nitrate.
- the soluble lignosulphonate sensitizer may be any one of the wide range of lignin sulphonates commercially available. Any soluble salt of lignin sulphonic acid may be used and calcium, sodium and ammonium lignosulphonates are particularly suitable. Such lignin sulphonates are by-products of the pulp and paper industry and are produced from waste sulphite liquor. The lignosulphonates are employed in the dry powder or granular form.
- Preferred melt explosive compositions of the invention contain from 50 to 98% by weight of at least one inorganic oxygen-supplying salt, up to 20% by weight of fuel and from 0.5 to 30% by weight of a soluble lignosulphonate.
- the composition may also advantageously contain other inorganic additives which are capable of forming eutectics with the oxydizing salts and thus lowering the melting point of the mixture, crystal habit modifiers, pH adjusting additives and stabilizers to arrest thermal decomposition or reaction. Examples of such materials will be readily evident to those skilled in the art.
- the composition may be prepared by melting the oxygen-supplying salt conveniently in admixture with an optional melting point depressant and while molten, adding thereto with stirring the fuel ingredient and the lignosul phonate sensitizer.
- the composition is thereafter cooled in cast form in, for example, a mold or package or alternatively, a grained, prilled or flaked product may be produced by known means.
- Example A series of melt explosive compositions were prepared by melting one or more oxygen-supplying salts with or without the presence of a melting point depressant and dispersing in the molten mixture a fuel ingredient and, optionally, a lignosulphonate sensitizer. .A few minutes of vigorous aerating agitation is beneficial to the process of the invention and was conveniently performed with a standard stirrer equipped with a propeller shaft. The explosives were then cooled and cast in cartridge form and exposed to initiation by various priming means. The melt composition containing a fuel but devoid of lignosulphonate sensitizer failed to detonate. The compositions containing added lignosulphonate sensitizer were detonated by means of a dynamite primer.
- soluble lignosulphonate is selected from the group consisting of calcium, sodium, and ammonium lignosulphonates and mixtures thereof.
- a melt explosive composition comprising essentially a solidified matrix of at least one inorganic oxygensupplying salt, said matrix having dispersed therein a fuel and a soluble lignosulphonate.
- a melt explosive as claimed in claim 1 wherein the fuel is selected from the group consisting of carbonaceous material, solid organic explosives, particulate light metal 25 and met-alloid, sulphur, carbon, urea, formates, thiocyanates, thiosulphates, sulphonates, hydrocarbon oils and waxes and mixtures thereof.
- a melt explosive as claimed in claim 1 wherein the oxygen-supplying salt is selected from the group consist- 30 ing of the nitrates of ammonium, sodium, potassium, barium, calcium and mixtures thereof.
- a melt explosive composition comprising essentially a solidifier matrix of from about 50% to about 98% 20 by weight of at least one inorganic oxygen-supplying salt, said matrix having dispersed therein from 0 to about 20% by weight of a fuel and from about 0.5% to about 30% by weight of a soluble lignosulphonate.
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Dispersion Chemistry (AREA)
- Molecular Biology (AREA)
- Crystallography & Structural Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Solid Fuels And Fuel-Associated Substances (AREA)
Description
United States Patent Ofice 3,421,954 Patented Jan. 14, 1969 74,368 us. Cl. 149-17 5 Claims Int. (:1. C06b 1/04 ABSTRACT OF THE DISCLOSURE Melt explosive compositions normally comprise a matrix of an inorganic oxygen-supplying salt with a fuel such as a solid organic explosive, carbonaceous material or particulate light metal dispersed therein. Such explosives may be employed in a variety of commercial or military applications. It has now been found that the sensitivity of melt explosive compositions may be improved by incorporating therein a soluble lignosulphonate.
This invention relates to melt explosive compositions and in particular to a means whereby the sensitivity of melt explosives may be substantially improved.
By melt explosive is meant an explosive composition produced by the steps of melting under the influence of heat one or more inorganic oxygen-supplying salts and while molten, adding thereto a fuel, the resultant mixture thereafter being allowed to cool to solidify in shaped or cast for-m. Such melt explosives may find useful application in nearly all commercial blasting operations and are particularly useful as economic substitutes for blasting agents of the type commonly packaged in sealed metal containers.
It has now been found that the sensitivity of melt explosive compositions may be substantially improved by incorporating therein a soluble lignosulphonate. In addition, the polymeric nature of this additive leads to useful improvements in the strengths and physical integrities of the derived products.
It is therefore an object of the present invention to provide a melt explosive composition of improved sensitivity. This and other objects of the invention will become apparent from a consideration of the following description and claims.
The improved melt explosive composition of the invention comprises essentially at least one inorganic oxygen-supplying salt, a fuel and a soluble lignosulphonate. The ingredients are combined together while the oxygensupplying salt is in the molten state. the composition thereafter being cooled to solidification.
A preferred inorganic oxygen-supplying salt for use in the melt explosive of this invention is ammonium nitrate. It will in some cases be advantageous to replace some or all of the ammonium nitrate by other metal nitrates such as sodium, potassium, barium and calcium nitrate. It will be known by those skilled in the art, for example, that eutectic mixtures of ammonium nitrate and sodium nitrate can be melted at lower temperatures than can pure ammonium nitrate. The use of such an eutectic blend in the explosive of the present invention possesses the desirable characteristics of reducing the degree of loss of any fuel material employed which may be volatile or decomposable at the higher temperatures, removing the ignition hazard associated with the use of higher temperatures, and realizing a considerable saving in the amount of heat necessary for carrying out the intended process.
The fuel ingredient may be any one of the wide range of explosive fuels known to the art such as, for example, carbonaceous material, solid organic explosives, particulate light metal or metalloid, sulphur, carbon, urea, formate, thiocyanate, thiosulphate and sulphanate salts of hydrocarbon oils and waxes and mixture of these. Fuels such as urea and other amido-ammonium or bydroxy compounds possessing high solubilities in ammonium nitrate are of particular benefit in the temperature-reducing role described heretofore.
The soluble lignosulphonate sensitizer may be any one of the wide range of lignin sulphonates commercially available. Any soluble salt of lignin sulphonic acid may be used and calcium, sodium and ammonium lignosulphonates are particularly suitable. Such lignin sulphonates are by-products of the pulp and paper industry and are produced from waste sulphite liquor. The lignosulphonates are employed in the dry powder or granular form.
Preferred melt explosive compositions of the invention contain from 50 to 98% by weight of at least one inorganic oxygen-supplying salt, up to 20% by weight of fuel and from 0.5 to 30% by weight of a soluble lignosulphonate. In addition the composition may also advantageously contain other inorganic additives which are capable of forming eutectics with the oxydizing salts and thus lowering the melting point of the mixture, crystal habit modifiers, pH adjusting additives and stabilizers to arrest thermal decomposition or reaction. Examples of such materials will be readily evident to those skilled in the art.
The composition may be prepared by melting the oxygen-supplying salt conveniently in admixture with an optional melting point depressant and while molten, adding thereto with stirring the fuel ingredient and the lignosul phonate sensitizer. The composition is thereafter cooled in cast form in, for example, a mold or package or alternatively, a grained, prilled or flaked product may be produced by known means.
The following example and table illustrate the improved melt explosive composition of this invention but the latter is in no manner to be limted in scope to the embodiments described.
Example A series of melt explosive compositions were prepared by melting one or more oxygen-supplying salts with or without the presence of a melting point depressant and dispersing in the molten mixture a fuel ingredient and, optionally, a lignosulphonate sensitizer. .A few minutes of vigorous aerating agitation is beneficial to the process of the invention and was conveniently performed with a standard stirrer equipped with a propeller shaft. The explosives were then cooled and cast in cartridge form and exposed to initiation by various priming means. The melt composition containing a fuel but devoid of lignosulphonate sensitizer failed to detonate. The compositions containing added lignosulphonate sensitizer were detonated by means of a dynamite primer. The results are exemplified in the table below wherein the quantities used are expressed as percent by weight of the total. The products containing the lignosulphonate additive exhi'bited a noticeable improvement in the reduction of the brittleness normally associated with previously known cast compositions.
soluble lignosulphonate is selected from the group consisting of calcium, sodium, and ammonium lignosulphonates and mixtures thereof.
TABLE Mix No 1 2 3 4 5 Arrunonium lignosulphonate 10. 0 8. 0 10. 0 5. 0 Ammonium nitrate (pure). 80. 0 90. 0 80. 0 71. 0 71. 0 Soduim nitrate (pure) 5. 0 10. 0 12. 0 12.0 Urea (fuel) 5. 0 7. 0 7. 0 Mineral 011 (fuel) 2. 0 Air atomized aluminum fuel) 10.0 2. 6 +5. 3 V2 2!! X 12!! 2 X 8 Detonation Fired Fired Fired Fired Failed l 1 No. 8 cap. 1 50% dynamite.
' 80 g. pentolite.
What I claim is:
1. A melt explosive composition comprising essentially a solidified matrix of at least one inorganic oxygensupplying salt, said matrix having dispersed therein a fuel and a soluble lignosulphonate.
2. A melt explosive as claimed in claim 1 wherein the fuel is selected from the group consisting of carbonaceous material, solid organic explosives, particulate light metal 25 and met-alloid, sulphur, carbon, urea, formates, thiocyanates, thiosulphates, sulphonates, hydrocarbon oils and waxes and mixtures thereof.
3. A melt explosive as claimed in claim 1 wherein the oxygen-supplying salt is selected from the group consist- 30 ing of the nitrates of ammonium, sodium, potassium, barium, calcium and mixtures thereof.
4. A melt explosive as claimed in claim 1 wherein the 5. A melt explosive composition comprising essentially a solidifier matrix of from about 50% to about 98% 20 by weight of at least one inorganic oxygen-supplying salt, said matrix having dispersed therein from 0 to about 20% by weight of a fuel and from about 0.5% to about 30% by weight of a soluble lignosulphonate.
References Cited UNITED STATES PATENTS 3,369,945 2/ 1968 Craig et al 149-41 X CARL D. QUARFORTH, Primary Examiner. S. J. LECHERT, JR., Assistant Examiner.
US. Cl. X.R. 149-44, 60, 61
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA974368 | 1966-10-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US3421954A true US3421954A (en) | 1969-01-14 |
Family
ID=4142700
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US654393A Expired - Lifetime US3421954A (en) | 1966-10-28 | 1967-07-19 | Melt explosive composition having a matrix of an inorganic oxygen supplying salt |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US3421954A (en) |
| GB (1) | GB1138920A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3488237A (en) * | 1969-01-28 | 1970-01-06 | Mine Safety Appliances Co | Cast flare composition of magnesium or titanium dispersed in a matrix |
| US3490966A (en) * | 1969-01-28 | 1970-01-20 | Mine Safety Appliances Co | Cast flares for red,green and blue color |
| US3497404A (en) * | 1969-01-28 | 1970-02-24 | Mine Safety Appliances Co | Cast flare composition of magnesium dispersed in a matrix,mostly sodium nitrate |
| US3726731A (en) * | 1971-02-24 | 1973-04-10 | Lcp Scient Inc | Composite materials producing sustained colored flames |
| US6430920B1 (en) * | 1999-11-23 | 2002-08-13 | Technanogy, Llc | Nozzleless rocket motor |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2488573C1 (en) * | 2012-01-11 | 2013-07-27 | Общество с ограниченной ответственностью "Газпром трансгаз Самара" | Explosive |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3369945A (en) * | 1965-11-01 | 1968-02-20 | Canadian Ind | Explosive composition containing an inorganic oxidizer salt,a soluble lignosulphonate,and mutual solvent therefor |
-
1967
- 1967-07-19 US US654393A patent/US3421954A/en not_active Expired - Lifetime
- 1967-10-16 GB GB47074/67A patent/GB1138920A/en not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3369945A (en) * | 1965-11-01 | 1968-02-20 | Canadian Ind | Explosive composition containing an inorganic oxidizer salt,a soluble lignosulphonate,and mutual solvent therefor |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3488237A (en) * | 1969-01-28 | 1970-01-06 | Mine Safety Appliances Co | Cast flare composition of magnesium or titanium dispersed in a matrix |
| US3490966A (en) * | 1969-01-28 | 1970-01-20 | Mine Safety Appliances Co | Cast flares for red,green and blue color |
| US3497404A (en) * | 1969-01-28 | 1970-02-24 | Mine Safety Appliances Co | Cast flare composition of magnesium dispersed in a matrix,mostly sodium nitrate |
| US3726731A (en) * | 1971-02-24 | 1973-04-10 | Lcp Scient Inc | Composite materials producing sustained colored flames |
| US6430920B1 (en) * | 1999-11-23 | 2002-08-13 | Technanogy, Llc | Nozzleless rocket motor |
Also Published As
| Publication number | Publication date |
|---|---|
| GB1138920A (en) | 1969-01-01 |
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