C - Chemistry – Metallurgy – 06 – B
Patent
C - Chemistry, Metallurgy
06
B
52/23
C06B 31/30 (2006.01) C06B 31/28 (2006.01) C06B 47/14 (2006.01)
Patent
CA 2013307
Abstract The present invention relates to a HANFO explosive consisting of a mixture of at least one nitrate-oil explosive (ANFO-type) and at least one water-in-oil explosive, and a method for its manufacture. The oil of the ANFO part contains 0.3 - 7.0 weight% based on the weight of the oil component of the oilsoluble elastomer having a viscosity average molecular weight of 30.000 - 5 mill., preferably 900.000 - 2.5 mill. The manufacture of the HANFO explosive can be carried out by first adding an oilsoluble elastomer to the oil of the ANFO-type explosive, then mixing the oil with sodium-, ammonium- and/or calcium nitrate and then mixing this mixture together with a water-in-oil emulsion explosive. The HANFO explosive can be applied both in bulk and cartridged form.
Carlsen Arne
Nygaard Erik Christopher
Fetherstonhaugh & Co.
Norsk Hydro A.s.
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