Dry blasting agents

Details Dry blasting agents Dry blasting agents

1975-12-16

1977-08-02

Lechert, Jr., Stephen J.

Explosive and thermic compositions or charges

Metal or alloy or metalloid, each in particulate form, with...

Plural oxygen yielding compounds

149 40, 149 44, 149 46, 149 60, 149 70, 149 71, 149 76, 149 82, 149 83, 149 85, C06B 3314

Patent

active

040393615

ABSTRACT:
This invention describes a method of preparation of sensitized dry blasting agents comprising a mixture of granular/powder ammonium nitrate with or without Sodium Nitrate, Potassium Nitrate, Calcium Nitrate, etc. fuel(s), and at least one sensitizer. The aid sensitizer is selected from the group comprising nitrate, chlorate, perchlorate and an organic derivative of a metal, which can exhibit variable valency and whose oxides and hydroxides are weakly basic in nature, e.g., iron, cobalt, nickel, chromium, copper, lead, etc.
Unlike the dry blasting agents known in prior art, the sensitized dry blasting agents can be detonated in small diameter boreholes with a generally available low strength detonator or specially made powerful detonator.

REFERENCES:
patent: 3630250 (1971-12-01), Hradel et al.
patent: 3633512 (1972-01-01), Schlack et al.
patent: 3706611 (1972-12-01), Hastings

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