Explosive and thermic compositions or charges – Structure or arrangement of component or product
Patent
1975-04-22
1977-02-15
Engle, Samuel W.
Explosive and thermic compositions or charges
Structure or arrangement of component or product
149 44, 149 60, 1491096, C06B 4500, C06B 3302, C06B 3130, C06B 4300
Patent
active
040081087
ABSTRACT:
In the chemical foaming of emulsions to form blasting agents, the gas-generating material (foaming agent), or a component thereof, is introduced into a stream of the emulsion and the stream thereafter delivered into packaging receivers, any work required to be performed on the emulsion after the addition of the gas-generating material thereto, e.g., pumping or mixing, being performed before substantial foaming due to reaction of the gas-generating material, as a rule before more than about 50 percent of the total density decrease attainable by foaming, has occurred. The gas-generating material can be added to a stream of fine emulsion and preferably mixed for uniform distribution through the emulsion, or to a stream of coarse emulsion, which is mixed with high shear to convert the coarse emulsion to a fine emulsion, mixing in either case taking place before substantial foaming has occurred.
REFERENCES:
patent: 2768072 (1956-10-01), Stark
patent: 3288658 (1966-11-01), Ferguson
patent: 3288661 (1966-11-01), Swisstack
patent: 3678140 (1972-07-01), Adams
patent: 3706607 (1972-12-01), Chrisp
patent: 3711345 (1973-01-01), Tomic
patent: 3713919 (1973-01-01), Tomic
patent: 3770522 (1973-11-01), Tomic
patent: 3783053 (1974-01-01), Oettmeier
patent: 3790415 (1974-02-01), Tomic
patent: 3886010 (1975-05-01), Thornley
E. I. Du Pont de Nemours and Company
Engle Samuel W.
Walsh Donald P.
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