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Title: High pressure-resistant nonincendive emulsion explosive

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.

Inventors:
 [1];  [2]
  1. Duquesne, PA
  2. Baghlingampalli, IN
Issue Date:
Research Org.:
National Energy Technology Laboratory (NETL), Pittsburgh, PA, Morgantown, WV (United States)
OSTI Identifier:
869611
Patent Number(s):
5366571
Assignee:
United States of America as represented by Secretary of (Washington, DC)
Patent Classifications (CPCs):
C - CHEMISTRY C06 - EXPLOSIVES C06B - EXPLOSIVES OR THERMIC COMPOSITIONS
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
pressure-resistant; nonincendive; emulsion; explosive; improved; composition; including; hollow; microspheres; bulking; agents; density; strength; true; particle; densities; grams; cubic; centimeter; glass; siliceous; ceramic; synthetic; resin; expanded; minerals; mixtures; preferred; weight; percentage; ranges; 10; chlorinated; paraffin; oil; imparts; film; phase; rendered; production; sodium; chloride; situ; via; decomposition; nitrate; perchlorate; air-gap; sensitivity; formation; monomethylamine; dissolved; withstand; static; pressures; 139; bars; dynamic; pressure; loads; 567; cubic centimeter; explosive composition; sodium chloride; hollow microspheres; weight percent; static pressure; composition including; sodium nitrate; bulking agents; oil phase; resin microspheres; emulsion explosive; situ formation; composition ranges; weight percentage; dynamic pressure; /149/

Citation Formats

Ruhe, Thomas C, and Rao, Pilaka P. High pressure-resistant nonincendive emulsion explosive. United States: N. p., 1994. Web.
Ruhe, Thomas C, & Rao, Pilaka P. High pressure-resistant nonincendive emulsion explosive. United States.
Ruhe, Thomas C, and Rao, Pilaka P. Sat . "High pressure-resistant nonincendive emulsion explosive". United States. https://www.osti.gov/servlets/purl/869611.
@article{osti_869611,
title = {High pressure-resistant nonincendive emulsion explosive},
author = {Ruhe, Thomas C and Rao, Pilaka P},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1994},
month = {1}
}

Patent:

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