US1305845A - Nitrostarch explosive - Google Patents
Nitrostarch explosive Download PDFInfo
- Publication number
- US1305845A US1305845A US1305845DA US1305845A US 1305845 A US1305845 A US 1305845A US 1305845D A US1305845D A US 1305845DA US 1305845 A US1305845 A US 1305845A
- Authority
- US
- United States
- Prior art keywords
- starch
- explosive
- nitro
- per cent
- nitrostarch
- 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
Links
- 239000002360 explosive Substances 0.000 title description 48
- 229920002472 Starch Polymers 0.000 description 52
- 239000008107 starch Substances 0.000 description 52
- 239000000203 mixture Substances 0.000 description 20
- VWDWKYIASSYTQR-UHFFFAOYSA-N Sodium nitrate Chemical compound [Na+].[O-][N+]([O-])=O VWDWKYIASSYTQR-UHFFFAOYSA-N 0.000 description 18
- VTYYLEPIZMXCLO-UHFFFAOYSA-L calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 16
- 235000019698 starch Nutrition 0.000 description 16
- 229910052760 oxygen Inorganic materials 0.000 description 14
- MYMOFIZGZYHOMD-UHFFFAOYSA-N oxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 14
- 239000001301 oxygen Substances 0.000 description 14
- 239000003610 charcoal Substances 0.000 description 12
- 239000011230 binding agent Substances 0.000 description 10
- 239000000969 carrier Substances 0.000 description 10
- 239000000843 powder Substances 0.000 description 10
- NINIDFKCEFEMDL-UHFFFAOYSA-N sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 10
- 229910052717 sulfur Inorganic materials 0.000 description 10
- 239000011593 sulfur Substances 0.000 description 10
- 229960003563 Calcium Carbonate Drugs 0.000 description 8
- 229910000019 calcium carbonate Inorganic materials 0.000 description 8
- 238000005474 detonation Methods 0.000 description 8
- 235000010344 sodium nitrate Nutrition 0.000 description 8
- 239000004317 sodium nitrate Substances 0.000 description 8
- 239000003159 antacid agent Substances 0.000 description 6
- 230000001458 anti-acid Effects 0.000 description 6
- 239000004615 ingredient Substances 0.000 description 6
- IWOUKMZUPDVPGQ-UHFFFAOYSA-N Barium nitrate Chemical compound [Ba+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O IWOUKMZUPDVPGQ-UHFFFAOYSA-N 0.000 description 4
- FGIUAXJPYTZDNR-UHFFFAOYSA-N Potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 description 4
- 238000005422 blasting Methods 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 239000003575 carbonaceous material Substances 0.000 description 4
- XTEGARKTQYYJKE-UHFFFAOYSA-M chlorate Chemical compound [O-]Cl(=O)=O XTEGARKTQYYJKE-UHFFFAOYSA-M 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000003921 oil Substances 0.000 description 4
- 241001674808 Biastes Species 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-N Carbonic acid Chemical compound OC(O)=O BVKZGUZCCUSVTD-UHFFFAOYSA-N 0.000 description 2
- 229920002261 Corn starch Polymers 0.000 description 2
- 241000700159 Rattus Species 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 239000008120 corn starch Substances 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 239000003721 gunpowder Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000006233 lamp black Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 125000000449 nitro group Chemical group [O-][N+](*)=O 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 235000010333 potassium nitrate Nutrition 0.000 description 2
- 239000004323 potassium nitrate Substances 0.000 description 2
- 150000003385 sodium Chemical group 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000004078 waterproofing Methods 0.000 description 2
Classifications
-
- 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
- C06B47/14—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 comprising a solid component and an aqueous phase
Definitions
- oxygen carrier i employnitrate of soda, or any equivalent oxygen carrier comcombustible matter ii zse charcoal or an similar combustible ⁇ TdUbOIHICQUHS nnrterial and sulfur.
- Nitro-sta-rch is used as the explosive base. Any suitable antacid may be employed, and "it desirable a. small pore/entage of a. suitable waterproofing oil may be added.
- As a. binder I use starch paste.
- Nitro-starch From 5% to 25% Sodium nitrate to 85% Sulfur 2% to 10% Charcoal 2% to 10% Calcium carbonate.-. 1% to 3% Dried starch paste 1% to 3% N or do I confine myself to the specific oxygen bearer, combustible material or antacid named above.
- combustible material or antacid for instance, instead of sodium nitrate, potassium nitrate or barium nitrate or any other well known oxygen carriers may be used.
- in the place of charcoal there may be used lamp black, iinely ground coal or any suitable combustible carbonaceous material.
- the calcium carbonate may be replaced with sodium iii-carbonate or any other well known antacid.
- a granular nitro-starch explosive whose sole detonating ingredient is intro-starch; the percentage of nitro-starch present being such that the explosive is incapable of detonation in-non-granular bulk form under ordinary conditions.
- said intro-starch being present to the extent of approximately five to twenty-five per cent. by weight ,of the whole explosive.
- a granular, uncompressed, detonating explosive containing five to twenty-five per cent. by weight of nitro-starch, and including a binder of starch paste which, when dry,approximates one to three per cent. by weight of the entire mixture.
- a granular, uncompressed, detonating explosive containing five to twenty-fiveper cent. by weight of nitro-starch, an oxygen carrier, combustible carbonaceous material, and a starchy binder approximating one to three per cent. by weight of the entire mixture.
- a granular, uncompressed, detonating explosive containing five to twenty-five per cent. by weight of nitro-starch, fifty to eighty-five per cent. of sodium nitrate, two
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
Description
a carton.
CHARLES E. WALLER, OF ALLENTOWN, PENNSYLVANIA, ASSXGNOR T INDEPENDENE NON-FREEZING POWDER COMPANY, OF NEWARK, NEW JERSEY, A CORPORATION OF NEW JERSEY.
NITROSTARCH EXPLOSXVE.
No Drawing.
"1'0 all w/wm it may (one 01%.,
,Be it known that I, CnAuLns E. \VaLLnu, a c tizen of thei'Umted States, and a resident of itllcntown, Lehigh county, Pennsylvania,
- of suitable oils added thereto to give consistency and to render waterproof. These explosives have been of the class known as high explosives containing comparatively high percentages of nitro-starch and having as their characteristic feature when exploded a. relatively quick action[ For some blasting operations it is desirable to use explo- Isivcs of slow action.that is, having more of a heaving force than ashattering efiect. The explosives which have heretofore been I used for this class of work are black powder and the so-called low powders containing small percentages of nitro-glyccrin. It is the object of this invention to provide a similar slow acting nitro-starch explosive.
The difiiculty which has heretofore been experienced by experimenters in'search of such a nitro-starch explosive has been that these explosives in the ordinary form have proven" too insensitive to detonation when the percentage of nitro-starch has been recluced to. the point where the action of the explosive is as slow as is necessary to meet the requirements of the class. For instance, mixtures, containing from ten per cent. (10%) to fifteen per cent. (15%) of nitrostarch together with suitable-percentages of .an oxygen bearer, such as'nitrate of soda and of combustible matter such as sulfur and charcoal, fail to explode with an ordinary detona-ting ca-p even when confined under such conditions as exist in practice. In fact, with nitro-starch as high as twenty-five per cent. (25%), mixed with certain desired pro- 7 portion of oxygen carrier and combustible,
the powder in the ordinary form of nitrostarch powders cannot be detonated under all conditions met in ordinary ractice. I have discovered that by granu sting such mixtures, however, in accordance with the method which I shaii describe, the resultant granular explosives will explode under the Specification of Letters Patent.
-monly employed for such purpose.
Patented a "no a, rats.
Application filed January 22, 1915.v Serial No. 3,783.
conditions which exist in blasting operations with as low a proportion of nitro starch as hve per cent. (5%), and various mixtures containing from five per cent.
(5%) to twenty-five per cent. (25%) nitrostarch. which before could not. be used in practice. become. in the form in which. .I produce them, entirely practical. Further more, the rate of detonation of-such explosives is slow and suitable for such biast ing operations as mentioned above.
I describe my method of-producing the granular nitrostarch explosives as follows:
As an oxygen carrier i employnitrate of soda, or any equivalent oxygen carrier comcombustible matter ii zse charcoal or an similar combustible \TdUbOIHICQUHS nnrterial and sulfur. Nitro-sta-rch is used as the explosive base. Any suitable antacid may be employed, and "it desirable a. small pore/entage of a. suitable waterproofing oil may be added. As a. binder I use starch paste.
In preparing the explosive I first thoroughly mix. by any suitable means, the various ingredients other than the nitro-starch. I then add and thoroughly mix in the nitrostarch. To the mass thus obtained 1' add liquid starch paste prepared by heating one part of corn starch with twenty-five parts of Water. The explosive mixture and the starch paste are then thoroughly mixed and incorporated. The entire mass is then rubbed through a screen, preferably of four to six mesh, on to trays, and dried. The dried mass is then readily broken up into the desired granular form. This method is to be sharply"distinguished from that in which a mass is compressed and grained. in the manufacture of gun-powder. Compression Won-id prevent detonation and my prod not must be uncompressed;
In "carryn'ig out my process I have found that good results can be obtained by {Kidfllfi twenty-six (26) parts, by weight. of they For uct should not contain more than four per ,freeze as do low powders containing small percentages of intro-glycerin. The character of their action on explosion 18 slow and 'much more suitable to the work for which they are intended than are any of the granular chlorate explosives. The matter of first importance is that they can be detonated under practical service conditions with ordinary detonating caps, while the same mixture in the ordinary form could not be so used.
An example of one formula which I have used with good results is as follows:
Nitro-starch- 10 Sodium nitrate 73 Sulfur 7.5 Charcoal 7.5 Calcium carbonate 1 Dried starch paste 1 I do not confine myself to the above proportions, however, these may be varied with in certain limits and still give satisfactory results in varying degrees. The percentages which I believe may be used to obtain the {esults which I have described are as folows:
Nitro-starch From 5% to 25% Sodium nitrate to 85% Sulfur 2% to 10% Charcoal 2% to 10% Calcium carbonate.-. 1% to 3% Dried starch paste 1% to 3% N or do I confine myself to the specific oxygen bearer, combustible material or antacid named above. For instance, instead of sodium nitrate, potassium nitrate or barium nitrate or any other well known oxygen carriers may be used. In the place of charcoal there may be used lamp black, iinely ground coal or any suitable combustible carbonaceous material. The calcium carbonate may be replaced with sodium iii-carbonate or any other well known antacid.
I claim:
1. A granular nitro-starch explosive whose sole detonating ingredient is intro-starch; the percentage of nitro-starch present being such that the explosive is incapable of detonation in-non-granular bulk form under ordinary conditions.
2. A granular nitro-starch explosive containing nitrostarch as the sole detonating ingredient; said nitro-starch being present to the extent of approximately live to twenty-five per cent. by weight of the whole explosive.
3. A granular, uncompressed, detonating explosive containing nitro-starch, and in cludmg a binder of agglutlmzlng material;
said intro-starch being present to the extent of approximately five to twenty-five per cent. by weight ,of the whole explosive.
4. A granular, uncompressed, detonating explosive containing five to twenty-five per cent. by weight of nitro-starch, and including a binder of starch paste which, when dry,approximates one to three per cent. by weight of the entire mixture.
5. A granular, uncompressed, detonating explosive containing five to twenty-fiveper cent. by weight of nitro-starch, an oxygen carrier, combustible carbonaceous material, and a starchy binder approximating one to three per cent. by weight of the entire mixture.
, 6. A granular, uncompressed, detonating explosive containing five to twenty-five per cent. by weight of nitro-starch, fifty to eighty-five per cent. of sodium nitrate, two
to ten per cent. of sulfur, two to ten per cent.
of charcoal, one to three per centof calcium carbonate, and a binder of starch approxi mately one to three per cent. by weight of the entire mixture.
In testimony whereof, I have signed my name to this specification, in the presenceof two subscribing witnesses.
' CHARLES E. WALLER.
Witnesses:
CHARLES H. I-lowsoN, Jos. H. KLEIN.
Publications (1)
Publication Number | Publication Date |
---|---|
US1305845A true US1305845A (en) | 1919-06-03 |
Family
ID=3373372
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US1305845D Expired - Lifetime US1305845A (en) | Nitrostarch explosive |
Country Status (1)
Country | Link |
---|---|
US (1) | US1305845A (en) |
-
0
- US US1305845D patent/US1305845A/en not_active Expired - Lifetime
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US3356547A (en) | Water-in-oil explosive emulsion containing organic nitro compound and solid explosive adjuvant | |
US3279965A (en) | Ammonium nitrate explosive compositions | |
US2124201A (en) | Explosive composition and process of production | |
US1305845A (en) | Nitrostarch explosive | |
US3540953A (en) | Blasting compositions containing ammonium nitrate prills,fuel,and a carbonaceous black | |
US3047441A (en) | Hydrogen peroxide explosives | |
US3377217A (en) | Gelled ammonium nitrate-nitromethane explosive composition | |
US2356149A (en) | Blasting explosive composition and method | |
US3966516A (en) | Slurry explosive composition containing a nitroparaffin and an amide | |
US3496040A (en) | Aqueous ammonium nitrate slurry explosive compositions containing hexamethylenetetramine | |
US3421954A (en) | Melt explosive composition having a matrix of an inorganic oxygen supplying salt | |
US3784421A (en) | Slurry explosives cross-linked with a compound of tellurium vi | |
US2235060A (en) | Manufacture of explosive compositions or blasting charges | |
US3178325A (en) | Metal nitrate explosives containing mononitrated aromatic sensitizing agents | |
US3668027A (en) | Method of making nitrocellulose-nitroglycerine water-bearing explosive compositions | |
US3312578A (en) | Slurried blasting explosives with cross-linking delay agent | |
US2481795A (en) | Explosives suitable for safety blasting explosives | |
US3662801A (en) | Composition causing combustion when contacted with water | |
US3337380A (en) | Explosive slurries from saturated ammonium nitrate solutions and process for preparing the same | |
US3378415A (en) | Explosive slurry containing an agglom-erate of an inorganic nitrate oxidizer and a fuel and method of making | |
US2736262A (en) | Low density safety ammonium nitrate | |
US3580750A (en) | Tmetn-inorganic nitrate explosives blended with petroleum oil | |
US3377218A (en) | Gelled ammonium nitrate-nitroethane explosive composition | |
US1819456A (en) | Process op impregnating- plant tissues with sodium nitrate for explosive | |
US3729350A (en) | Composition for forming cloud of in-capacitating agent upon detonation |