Explosive and thermic compositions or charges – Structure or arrangement of component or product
Patent
1983-12-14
1985-02-19
Lechert, Jr., Stephen J.
Explosive and thermic compositions or charges
Structure or arrangement of component or product
149 21, 149 46, 149 61, 1491096, C06B 4500
Patent
active
045003696
ABSTRACT:
The present invention relates to an emulsion explosive of the water-in-oil type having resistance against dissolution in water, and application of said emulsion in explosive mixtures. The emulsion explosive is non cap-sensitive and can be cartridged alone or in mixture with ANFO. It can also be used in bulk systems. The explosive contains 60-90 percent by weight of ammonium nitrate and calcium nitrate, 4-15 percent by weight of a crystallization temperature lowering agent, preferably urea, and 2-6% wax and/or a wax/oil mixture. The content of water consists essentially of water of crystallization bound to the calcium nitrate. Further, the explosive contains emulsifier and density reducing agents such as sodium nitrite/thiourea or hollow microspheres.
REFERENCES:
patent: 4310364 (1982-01-01), Ekman et al.
patent: 4315787 (1982-02-01), Hattori
patent: 4338146 (1982-07-01), Granlund
Nygaard Erik C.
Petterson Bjorn R.
Tag Arne
Lechert Jr. Stephen J.
Norsk Hydro a.s.
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