Low-density granular blasting agent for use in mining

Details Low-density granular blasting agent for use in mining Low-density granular blasting agent for use in mining

C - Chemistry, Metallurgy

06

B

C06B 31/28 (2006.01)

Patent

CA 2751488

The invention relates to the development of a low-density granular Oxidizing Agent (PAN), the ingredients of which do not segregate and are conferred with explosive properties through the simple mixture thereof with combustible ingredients, thereby producing a low density granular Blasting Agent (PANFO). PANFO has many applications in the mining industry, in both open-pit and underground operations, said agent being suitable for use alone in applications intended to control damage to the banks or mixed other explosives typically used in the industry. According to the invention the density of the mixture can be adjusted to the conditions of the rock to be blasted and, consequently, the fragmentation requirements can be maximised. When used as a diluent of standard ANFO prill, the low-density reactive nature of PANFO eliminates the risks of detonation failures, associated with the segregation of the ingredients of the mixture, regardless of the desired degree of dilution or the level of segregation produced during pit loading .

La présente invention porte sur la mise au point d'un agent oxydant granulaire de faible densité (PAN) dont les ingrédients ne se séparent pas et auxquels sont conférées des propriétés explosives par le simple mélange avec des ingrédients combustibles, ce qui donne comme résultat final un agent explosif granulaire de faible densité (PANFO). Le PANFO a des applications diverses dans l'industrie minière, tant dans des opérations à ciel ouvert que souterraines, ledit agent explosif étant approprié pour être utilisé, seul, dans des applications de limitation des dommages aux talus des bancs ou bien dans des mélanges avec d'autres explosifs industriels classiques, ceci permettant d'ajuster la densité de mélange aux conditions de la roche à faire exploser et de maximiser ainsi les exigences de fragmentation. Quand on utilise cet agent explosif en tant que diluant de granulé d'ANFO standard, la nature réactive à faible densité du PANFO élimine les risques de défaillances de détonation associés à la séparation des ingrédients du mélange, quel que soit le degré de dilution recherché ou le niveau de ségrégation produit pendant la charge dans le puits.

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