Waterproof granular explosive composition

C - Chemistry – Metallurgy – 06 – B

Patent

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Details

C06B 31/32 (2006.01) C06B 21/00 (2006.01) C06B 45/36 (2006.01)

Patent

CA 2493557

A waterproof granular explosive composition which like conventional ANFO explosive, is excellent in handleability, for example, being usable in bulk form and having fluidity and can be produced by an easy process, and which exhibits satisfactory water resistance in an immersion time envisioned in practical use and further exhibits explosion performance. In particular, an explosive composition comprising porous prill ammonium nitrate and a nitro compound optionally together with an antiblocking agent characterized in that a waterproof resin coating film is formed from a thermosetting resin and the above components are covered with the waterproof resin coating film.

La présente invention concerne une composition d'explosif granulaire résistant à l'eau qui, de même que le nitrate-fuel conventionnel, est très maniable dans la mesure où l'on peut l'utiliser en vrac et qu'il est fluide. Cette composition, pour laquelle le procédé de production est facile, fait preuve d'une bonne résistance à l'eau pour les durées d'immersion courantes, tout en présentant un bon rendement explosif. L'invention concerne plus particulièrement une composition d'explosif comprenant un ammonitrate perlé poreux associé à un composé nitro et à un antibloquant. Cette composition est caractérisée en ce que ses composants sont pris dans un film d'enrobage en résine étanche à l'eau.

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