Ammonium nitrate blasting agent and method of production

US20050269002A1Inactive Publication Date: 2005-12-08NEXCO INC
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Patent Information

Authority / Receiving Office
US Β· United States
Current Assignee / Owner
NEXCO INC
Publication Date
2005-12-08
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

A method of producing an ammonium nitrate blasting agent and such an agent. The method comprises the steps of first combining together a crystal habit modifier with an aqueous solution of ammonium nitrate. Using the mixture of the crystal habit modifier and the ammonium nitrate solution, ammonium nitrate crystals are formed having a particle size of about 1 to about 500 microns. The ammonium nitrate crystals are then combined with an organic carbonaceous fuel at a ratio such that the organic carbonaceous fuel is from about 2 to about 10 percent by weight of the blasting agent.
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Description

FIELD OF THE INVENTION

[0001] This invention relates generally to the field of explosives and blasting agents, and in particular to an ammonium nitrate blasting agent and its method of production. BACKGROUND OF THE INVENTION

[0002] Explosives or blasting agents, and in particular ammonium nitrate explosives, are used for a wide variety of different industrial applications ranging from mining, to mineral exploration, to civil engineering applications. Currently, there are three major classifications of commercial explosives that are based upon ammonium nitrate. These three classes are ANFO (explosives grade ammonium nitrate prills and fuel oil), watergels (slurry explosives) and ammonium nitrate based emulsions. Each form of explosive has its own particular advantages and disadvantages.

[0003] ANFO is a low cost explosive with a low velocity of detonation and with poor water resistance. ANFO also has a relatively low density of approximately 0.85 g / cc, resulting in relatively low bul...

Claims

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