EXPLOSIVE COMPOSITION FOR MECHANIZED LOADING OF BLAST HOLES AND WELLS Russian patent published in 2025 - IPC C06B31/28 C06B45/00 

FIELD: blasting.

SUBSTANCE: invention relates to blasting operations and can be used, in particular, in pneumatic method of charging blast holes and wells in underground mining operations. Explosive composition based on granulated ammonium nitrate contains granulated ammonium nitrate, an oil product and a solid combustible component of up to 8 wt.%. Solid combustible component contains polydisperse aluminium and dispersed graphite. Polydisperse aluminium has aluminium particle size of 70-450 mcm. Components of the explosive composition have the following ratio, wt.%: dispersed graphite – 0.5-2.0; polydisperse aluminium – 3-6; oil product – 2-5; granulated ammonium nitrate – balance.

EFFECT: reduction of volume resistance and, as a result, increase of electroconductivity of explosive composition with absorption of static charge, increase of critical threshold of mechanical action, as well as increase of detonation speed of explosives.

2 cl, 4 dwg, 8 tbl