Heavy anfo and a tailored expanded polymeric density control...

Details Heavy anfo and a tailored expanded polymeric density control... Heavy anfo and a tailored expanded polymeric density control...

C - Chemistry, Metallurgy

06

B

C06B 23/00 (2006.01) C06B 31/28 (2006.01) C06B 45/08 (2006.01)

Patent

CA 2634426

The present invention is directed to an explosive composition comprised of heavy ANFO and expanded polymeric beads that have a density that is less than the density of the heavy ANFO. The expanded polymeric beads have a size that is determined or based on the size of ammonium nitrate prills used in the heavy ANFO portion of the composition. In one embodiment, the expanded polymeric beads that are utilized in the composition are at least 70% of the lower limit of the mesh size of the predominant ammonium nitrate prill mesh size. In another embodiment, the expanded polymeric beads are at least 70% of the a size that is related to the average mesh size of the ammonium nitrate prills.

L'invention porte sur une composition explosive d'ANFO lourd et sur des perles de polymères expansés dont la densité est moindre que celle de l'ANFO lourd. Les perles de polymères expansés ont une taille qui est déterminée ou basé sur celle des grains de nitrate d'ammonium utilisés dans la partie d'ANFO lourd de la composition. Dans une exécution, les perles de polymère expansé de la composition ont au moins 70% de la limite inférieure de la taille du calibre prédominant des grains de nitrate d'ammonium. Dans une autre exécution, les perles de polymères EXPANSÉ de la composition ont au moins 70% de la taille du calibre moyen des grains de nitrate d'ammonium.

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