Buffered emulsion blasting agent

Details Buffered emulsion blasting agent Buffered emulsion blasting agent

1998-06-08

2000-04-18

Jordan, Charles T.

Explosive and thermic compositions or charges

Structure or arrangement of component or product

149 46, C06B 4500, C06B 3128

Patent

active

060510862

ABSTRACT:
A buffered emulsion blasting agent is disclosed, particularly suited for use in connection with sulfide and pyrite ores. The buffered emulsion blasting agent comprises an emulsifier, an organic fuel in continuous phase, an oxidizer salt solution in discontinuous phase, and a buffering agent comprising a low molecular weight amine. The low molecular weight amine is preferably an alkylamine or alkanolamine having carbon chain lengths of from 2 to 5 and is more preferably diethanolamine. The buffering agent is present in the buffered emulsion blasting agent in a weight percent that is preferably within a range of from approximately 0.1% to 5%, more preferably within a range of from approximately 0.5% to 1%, and most preferably approximately 0.75%.

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D.R. Forshey et al., The Reactivity of Ammonium Nitrate-Fuel Oil with Pyrite-Bearing Ores, 1968, Bureau of Mines, RI 7187.
Y. Miron et al., The Reactivity of Aluminized AN-FO with Pyrite-Bearing Ores, 1976, Bureau of Mines, RI 8157.
Y. Miron et al., Reactivity of ANFO with Pyrite Containing Weathering Products--Evaluation of Additional Inhibitors, Bureau of Mines RI 8727.
T. Steis & W. Evans, Sulphide Ore/Explosives Exothermic Reactions, 1992 ICI Explosives Canada.

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