초록

This invention relates to Cold-Formulated Slurry Explosives with Ultra-Fine Oxidizer Solids and including perchlorates.

대표청구항 ▼

Aqueous explosive slurries formulated at ambient temperatures comprising: (a) A dispersion phase having a minimum volume in the range 40 to 60% of the slurry consisting of an aqueous solution saturated with ammonium nitrate and containing sodium nitrate at or near saturation, with or without other s

Aqueous explosive slurries formulated at ambient temperatures comprising: (a) A dispersion phase having a minimum volume in the range 40 to 60% of the slurry consisting of an aqueous solution saturated with ammonium nitrate and containing sodium nitrate at or near saturation, with or without other soluble fuel, soluble oxidizer, or both, (b) A disperse phase having a maximum volume of 60 to 40% of the total slurry consisting of from zero to 50% ultra-fine (colloidal size) ammonium perchlorate, from zero to 5% ultra-fine or fine recrystallized sodium nitrate, and from 50 to 100% ammonium nitrate in colloidal (milled), fine ground, fine recrystallized or coarse form, or combinations thereof, at least 30% of the disperse phase being ultra-fine (colloidal) oxidizer solids, (c) Soluble insoluble, partially soluble, or combinations thereof of fuel sensitizer(s) sufficient to oxygen-balance the explosive slurry at zero to negative oxygen percentage (based on CO2 and H2O as the products of detonation) and to sensitize it at or above a level of detonability whereby it propagates completely in an unconfined 5″diameter polyethylene-packaged charge at least six diameters in length with a 2″diameter×4″long case 50/50 pentolite booster or its equivalent with the explosive slurry having a density above 1.10 g/cc at 20°C. or above 1.0 at zero °C. (d) Thickened and gelled with guar gum, a cross-linking agent therefor and density controlled to the desired density by gas generated chemically or introduced mechanically by aeration using variations in the guar gum content, or by incorporation of a low-density porous or aerated solid.