US1631070A - Coal-mining explosive - Google Patents
Coal-mining explosive Download PDFInfo
- Publication number
- US1631070A US1631070A US746873A US74687324A US1631070A US 1631070 A US1631070 A US 1631070A US 746873 A US746873 A US 746873A US 74687324 A US74687324 A US 74687324A US 1631070 A US1631070 A US 1631070A
- Authority
- US
- United States
- Prior art keywords
- explosive
- coal
- hydrocellulose
- nitrate
- 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 19
- 238000005065 mining Methods 0.000 title description 7
- VWDWKYIASSYTQR-UHFFFAOYSA-N sodium nitrate Chemical compound [Na+].[O-][N+]([O-])=O VWDWKYIASSYTQR-UHFFFAOYSA-N 0.000 description 8
- 239000003245 coal Substances 0.000 description 7
- 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 5
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 4
- 235000010344 sodium nitrate Nutrition 0.000 description 4
- 239000004317 sodium nitrate Substances 0.000 description 4
- SNIOPGDIGTZGOP-UHFFFAOYSA-N Nitroglycerin Chemical compound [O-][N+](=O)OCC(O[N+]([O-])=O)CO[N+]([O-])=O SNIOPGDIGTZGOP-UHFFFAOYSA-N 0.000 description 3
- 239000000006 Nitroglycerin Substances 0.000 description 3
- 229960003711 glyceryl trinitrate Drugs 0.000 description 3
- 239000007800 oxidant agent Substances 0.000 description 3
- SPSSULHKWOKEEL-UHFFFAOYSA-N 2,4,6-trinitrotoluene Chemical compound CC1=C([N+]([O-])=O)C=C([N+]([O-])=O)C=C1[N+]([O-])=O SPSSULHKWOKEEL-UHFFFAOYSA-N 0.000 description 2
- GDDNTTHUKVNJRA-UHFFFAOYSA-N 3-bromo-3,3-difluoroprop-1-ene Chemical compound FC(F)(Br)C=C GDDNTTHUKVNJRA-UHFFFAOYSA-N 0.000 description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- ZRALSGWEFCBTJO-UHFFFAOYSA-N Guanidine Chemical compound NC(N)=N ZRALSGWEFCBTJO-UHFFFAOYSA-N 0.000 description 2
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- IWOUKMZUPDVPGQ-UHFFFAOYSA-N barium nitrate Chemical compound [Ba+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O IWOUKMZUPDVPGQ-UHFFFAOYSA-N 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000000015 trinitrotoluene Substances 0.000 description 2
- 239000011787 zinc oxide Substances 0.000 description 2
- CHJJGSNFBQVOTG-UHFFFAOYSA-N N-methyl-guanidine Natural products CNC(N)=N CHJJGSNFBQVOTG-UHFFFAOYSA-N 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
- 229920001131 Pulp (paper) Polymers 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 150000001720 carbohydrates Chemical class 0.000 description 1
- 235000014633 carbohydrates Nutrition 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- SWSQBOPZIKWTGO-UHFFFAOYSA-N dimethylaminoamidine Natural products CN(C)C(N)=N SWSQBOPZIKWTGO-UHFFFAOYSA-N 0.000 description 1
- AXZAYXJCENRGIM-UHFFFAOYSA-J dipotassium;tetrabromoplatinum(2-) Chemical compound [K+].[K+].[Br-].[Br-].[Br-].[Br-].[Pt+2] AXZAYXJCENRGIM-UHFFFAOYSA-J 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- ZXQYGBMAQZUVMI-GCMPRSNUSA-N gamma-cyhalothrin Chemical compound CC1(C)[C@@H](\C=C(/Cl)C(F)(F)F)[C@H]1C(=O)O[C@H](C#N)C1=CC=CC(OC=2C=CC=CC=2)=C1 ZXQYGBMAQZUVMI-GCMPRSNUSA-N 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000002480 mineral oil Substances 0.000 description 1
- 235000010446 mineral oil Nutrition 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- -1 nitrostarch Substances 0.000 description 1
- VLTRZXGMWDSKGL-UHFFFAOYSA-M perchlorate Inorganic materials [O-]Cl(=O)(=O)=O VLTRZXGMWDSKGL-UHFFFAOYSA-M 0.000 description 1
- VLTRZXGMWDSKGL-UHFFFAOYSA-N perchloric acid Chemical compound OCl(=O)(=O)=O VLTRZXGMWDSKGL-UHFFFAOYSA-N 0.000 description 1
- 229910001487 potassium perchlorate Inorganic materials 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 235000017557 sodium bicarbonate Nutrition 0.000 description 1
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 1
- 239000011780 sodium chloride 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
- 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
Definitions
- nnn COMPANY on NEwxonK, N. Y., A CORPORATION on NEW YORK.
- This invention relates to explosives and more particularly to improvements in explosives of the type employed in coal mining.
- the principal object of the invention is to provide an explosive of this type having exceptional efficiency in the work for which it is primarily intended, and further to provide such an explosive having an extremely low flame temperature.
- coal mining explosives possessing the aforesaid characteristics in exceptional degree may be prepared by adding hydrocellulose or its equivalent to mixtures of detonating substances such as nitrostarch, nitroglycerin, trinitrotoluene, or the like with inorganic oxidizing agents such as sodium nitrate, ammonium perchlorate, ammonium nitrate and similar oxygen-carrying salts.
- the relative proportions of the constituents of the explosive may vary largely. but generally I prefer to use from 1% to 20% of hydrocellulose, in combination with 5% to 25% of nitrostarch, and 5% to 50% of ammonium nitrate or its equivalent.
- I may, in the foregoing example. replace ammonium nitrate with guanidine nitrateor any like material; and in place of sodium nitrate, employ any suitable oxidizing agent such as potassium perchlorate, barium nitrate, or ammonium perchlorate.
- I may, for example, employ sodium bicarbonate.
- the invention is not limited to this example nor to any of the individual ingredients thereof.
- the invention contemplates the use in a coal mining explosive of hydrocellulose or other hydroxylated body corresponding in chemical nature to hydrocellulose, but comprising hydrated or hydroxylated derivatives of other carbohydrates than cellulose, for the purpose of re- 'ducing the explosion temperature and increasing the coal-getting characteristics of the explosive.
- the invention is applicable to coal mining explosives having anitroglycerin, perchlorate, Or any other explosive base.
- Nitroglycerin 10 Ammonium nitrate 65 Sodium nitrate -i 5 Wood pulp 10' Hydrocellulose 5 Sodium chloride 4 Calcium carbonate 1 made to serve the double purpose of an absorbent of the nitroglycerin, and a highly efficient flame-deadening and. temperaturereducing agent as well.
- the formula given may be modified accordingly. and in any. other way .within the range of equivalents.
- a detonating explosive comprisingxa detonating agent and hydrocellulose.
- a detonating explosive comprising a 5% f0 25% nitrostarch, 5% to 50% of am- ⁇ 11011111111 nitrate, and 1% to 20% hydrocellu- 10 ose.
- a nitrostarch explosive comprising hydi'ocellulose.
- V 7 An explosive comprising niti'ostarch, an oxidizing agent, and hydrocellulose.
Description
Patented May 3 1927" WALTER o. SNELLING, or ALLENTOWN, PENNSYLVANIA, ASSIGNOBTO TROJAN :eow-
nnn COMPANY, on NEwxonK, N. Y., A CORPORATION on NEW YORK.
COAL-MINING nxtetosivn.
No Drawing.
This invention relates to explosives and more particularly to improvements in explosives of the type employed in coal mining.
The principal object of the invention is to provide an explosive of this type having exceptional efficiency in the work for which it is primarily intended, and further to provide such an explosive having an extremely low flame temperature.
It is desirable for reasons of safety that any explosive employed in coal mining have a low flame temperature, and also that it be efiicient in its coal-getting qualities and that it give a maximum of prepared sizes. by which is meant coal in large lumps, or chunky coal in which a considerable percentage of the total material is represented by lumps of fair size. I have discovered that coal mining explosives possessing the aforesaid characteristics in exceptional degree may be prepared by adding hydrocellulose or its equivalent to mixtures of detonating substances such as nitrostarch, nitroglycerin, trinitrotoluene, or the like with inorganic oxidizing agents such as sodium nitrate, ammonium perchlorate, ammonium nitrate and similar oxygen-carrying salts.
The relative proportions of the constituents of the explosive may vary largely. but generally I prefer to use from 1% to 20% of hydrocellulose, in combination with 5% to 25% of nitrostarch, and 5% to 50% of ammonium nitrate or its equivalent.
As an example of an explosive constituting an embodiment of my invention, I may pre sent the following:
Per cent.
Nitrostarch 16.00 Ammonium nitrate 6'7 .00 TNT 7.50 Sodium nitrate 4.00 Hydrocellulose 5.00 Zinc oxide .20 Mineral oil .30
As indicative of the wide range of equivalents, I may, in the foregoing example. replace ammonium nitrate with guanidine nitrateor any like material; and in place of sodium nitrate, employ any suitable oxidizing agent such as potassium perchlorate, barium nitrate, or ammonium perchlorate.
Application filed October 30,;l924. Serial No. 746,873.
Instead of zinc oxide, I may, for example, employ sodium bicarbonate. I
Although an explosive made in accordance with the foregoing example and including nitrostarch will give extremely satisfactory results. the invention is not limited to this example nor to any of the individual ingredients thereof. Broadly the invention contemplates the use in a coal mining explosive of hydrocellulose or other hydroxylated body corresponding in chemical nature to hydrocellulose, but comprising hydrated or hydroxylated derivatives of other carbohydrates than cellulose, for the purpose of re- 'ducing the explosion temperature and increasing the coal-getting characteristics of the explosive. Obviously, the invention is applicable to coal mining explosives having anitroglycerin, perchlorate, Or any other explosive base.
As an example of such explosive, the following formula is given:
Per cent.
Nitroglycerin 10 Ammonium nitrate 65 Sodium nitrate -i 5 Wood pulp 10' Hydrocellulose 5 Sodium chloride 4 Calcium carbonate 1 made to serve the double purpose of an absorbent of the nitroglycerin, and a highly efficient flame-deadening and. temperaturereducing agent as well. The formula given may be modified accordingly. and in any. other way .within the range of equivalents.
I claim: a
1. A detonating explosive comprisingxa detonating agent and hydrocellulose.
2. A detonating explosive comprising a 5% f0 25% nitrostarch, 5% to 50% of am- {11011111111 nitrate, and 1% to 20% hydrocellu- 10 ose.
6. A nitrostarch explosive comprising hydi'ocellulose. v 1
V 7. An explosive comprising niti'ostarch, an oxidizing agent, and hydrocellulose.
' ALTER O. SNELLING.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US746873A US1631070A (en) | 1924-10-30 | 1924-10-30 | Coal-mining explosive |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US746873A US1631070A (en) | 1924-10-30 | 1924-10-30 | Coal-mining explosive |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US1631070A true US1631070A (en) | 1927-05-31 |
Family
ID=25002727
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US746873A Expired - Lifetime US1631070A (en) | 1924-10-30 | 1924-10-30 | Coal-mining explosive |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US1631070A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5372070A (en) * | 1992-02-10 | 1994-12-13 | Thiokol Corporation | Burn rate modification of solid propellants with bismuth trioxide |
-
1924
- 1924-10-30 US US746873A patent/US1631070A/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5372070A (en) * | 1992-02-10 | 1994-12-13 | Thiokol Corporation | Burn rate modification of solid propellants with bismuth trioxide |
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