Stable nitrate/emulsion explosives and emulsion for use therein

Details Stable nitrate/emulsion explosives and emulsion for use therein Stable nitrate/emulsion explosives and emulsion for use therein

1985-01-29

1985-11-26

Lechert, Jr., Stephen J.

Explosive and thermic compositions or charges

Structure or arrangement of component or product

Particles of diverse size or shape

149 2, 149 46, 1491096, 149110, 102313, C06B 4502

Patent

active

045552789

ABSTRACT:
Explosives that are sensitized blends of a water-in-oil emulsion and inorganic nitrate, e.g., AN, particles, such as AN or ANFO prills, have improved stability when their structure hinders the loss of water from the aqueous emulsion phase and transportation of such water across the oil phase to the nitrate particles. Use of an anionic emulsifying agent comprising a fatty acid salt, e.g., as formed in situ during the formation of the emulsion, is the preferred way of forming such a blend-stabilizing structure. Emulsion
itrate blends stabilized in this manner make satisfactory storage-stable packaged products. Emulsion
itrate blends made with a new low-viscosity emulsion containing essentially all of the oil required to oxygen-balance the blend and a proportionately larger amount of anionic emulsifying agent to stabilize the emulsion structure constitute preferred bulk products owing to their greater adaptability to pumping. Pumping the stabilized blends through an annular stream of aqueous lubricating liquid is advantageous.

REFERENCES:
patent: 3161551 (1964-12-01), Egly et al.
patent: 4111727 (1978-09-01), Clay
patent: 4181546 (1980-01-01), Clay
patent: 4287010 (1981-09-01), Owen, II
patent: 4357184 (1982-11-01), Binet et al.
patent: 4404050 (1983-09-01), Yorke et al.
patent: 4420349 (1983-12-01), Bampfield

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