Explosive and thermic compositions or charges – Structure or arrangement of component or product
Patent
1993-01-15
1994-11-22
Walsh, Donald P.
Explosive and thermic compositions or charges
Structure or arrangement of component or product
149 46, 149 36, 149 61, 149 77, 149 83, C06B 3128, C06B 4500, C06B 2908
Patent
active
053665716
ABSTRACT:
An improved emulsion explosive composition including hollow microspheres/bulking agents having high density and high strength. The hollow microspheres/bulking agents have true particle densities of about 0.2 grams per cubic centimeter or greater and include glass, siliceous, ceramic and synthetic resin microspheres, expanded minerals, and mixtures thereof. The preferred weight percentage of hollow microspheres/bulking agents in the composition ranges from 3.0 to 10.0 A chlorinated paraffin oil, also present in the improved emulsion explosive composition, imparts a higher film strength to the oil phase in the emulsion. The emulsion is rendered nonincendive by the production of sodium chloride in situ via the decomposition of sodium nitrate, a chlorinated paraffin oil, and sodium perchlorate. The air-gap sensitivity is improved by the in situ formation of monomethylamine perchlorate from dissolved monomethylamine nitrate and sodium perchlorate.
The emulsion explosive composition can withstand static pressures to 139 bars and dynamic pressure loads on the order of 567 bars.
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Rao Pilaka P.
Ruhe Thomas C.
Chi Anthony R.
Koltos E. Philip
The United States of America as represented by the Secretary of
Walsh Donald P.
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