EMULSION TYPE EXPLOSIVE COMPOSITION CONTAINING AMMONIUM STEARATE OR ALKALI METAL STEARATE

• US 3,770,522 A
• Filed: 04/13/1972
• Issued: 11/06/1973
• Est. Priority Date: 08/18/1970
• Status: Expired due to Term

• Current Assignee: ETI Explosives Technologies International, Inc.
• Original Assignee: Ernst A. Tomic
• Inventors: Tomic, Ernst A.
• Primary Examiner(s): Lechert, Jr., Stephen J.
• Application Number:
  US05/243,822
• Time in Patent Office: 572 Days
• Field of Search: 149/2,44,43,46
• US Class Current: 149/2
• CPC Class Codes: C06B 47/145 Water in oil emulsion type explosives in which a carbonaceous fuel forms the continuous phase

Abstract

An emulsion type explosive composition containing inorganic oxidizing salt, e.g., ammonium nitrate, water, water-insoluble carbonaceous fuel, e.g., fuel oil, sensitizer, e.g., gas bubbles, and a selected stearate salt emulsifier, e.g., sodium stearate.

Claims

2. A product of claim 1 containing stearic acid.

3. A product of claim 1 wherein the stearate salt is sodium stearate.

4. A product of claim 3 containing stearic acid.

5. A product of claim 3 containing about from 0.5-6 percent by weight stearate salt.

6. A product of claim 3 containing about from 1-4 percent by weight stearate salt.

7. A product of claim 3 containing occluded gas as a sensitizer. 8 A product of claim 3 containing particulate alluminum as a sensitizer.

9. A product of claim 3 containing gas-entrapping material as a sensitizer.

10. A product of claim 3 containing gas bubbles as a sensitizer.

11. A product of claim 3 containing hydrocarbon fuel.

12. A product of claim 11 wherein the hydrocarbon is fuel oil.

13. A product of claim 3 containing ammonium nitrate.

14. A product of claim 13 containing sodium nitrate.

15. In an emulsified blasting agent comprising, by weight, about 20-85 percent ammonium nitrate, about 5-30 percent water, sufficient hydrocarbon fuel to obtain an oxygen balance in the blasting agent about from -10 to +5 percent, and about 5-40 percent, by volume, occluded gas as sensitizer, the improvement which comprises said blasting agent composition containing about 0.5-6 percent by weight sodium stearate to form the emulsion.

16. A product of claim 15 containing stearic acid.

17. A product of claim 16 containing about 0.5-6 percent by weight stearic acid.

18. A product of claim 15 containing about 1-4 percent by weight sodium stearate and about 1-4 percent by weight stearic acid.

19. A product of claim 15 wherein the occluded gas is gas bubbles.

20. A product of claim 15 wherein the occluded gas is in the form of air-carrying solid material.

21. A product of claim 15 containing, by weight, about 45-75 percent ammonium nitrate, about 10-25 percent water, about 4-8 percent hydrocarbon fuel.

22. A product of claim 21 containing 1-4 percent stearic acid.

23. A product of claim 21 containing up to about 25 percent by weight sodium nitrate.

24. A product of claim 21 wherein the fuel is fuel oil.

25. The product of claim 18 wherein the sodium stearate and stearic acid are present in substantially equal amounts.