US2008185080A1PendingUtilityA1

Heavy ANFO and a Tailored Expanded Polymeric Density Control Agent

58
Individually held — no corporate assignee on recordPriority: Oct 10, 2005Filed: Oct 10, 2005Published: Aug 7, 2008
Est. expiryOct 10, 2025(expired)· nominal 20-yr term from priority
Inventors:Kevin H. WaldockChristopher Kulish
C06B 23/003C06B 45/02C06B 31/285C06B 47/145C06B 45/00
58
PatentIndex Score
0
Cited by
0
References
0
Claims

Abstract

The present invention is directed to an explosive composition comprised of heavy ANFO and expanded polymeric beads that have a density that is less than the density of the heavy ANFO. The expanded polymeric beads have a size that is determined or based on the size of ammonium nitrate prills used in the heavy ANFO portion of the composition. In one embodiment, the expanded polymeric beads that are utilized in the composition are at least 70% of the lower limit of the mesh size of the predominant ammonium nitrate prill mesh size. In another embodiment, the expanded polymeric beads are at least 70% of the a size that is related to the average mesh size of the ammonium nitrate prills.

Claims

exact text as granted — not AI-modified
1 . An explosive composition comprising:
 a heavy ANFO comprising:   an ammonium nitrate prills and fuel oil; and   a water-in-oil emulsion explosive;   wherein said ammonium nitrate prills have a range of sizes and expanded polymeric beads that have a size that is related to prill sizes of the ammonium nitrate prills.   
     
     
         2 . An explosive composition, as claimed in  claim 1 , wherein:
 said expanded polymeric beads have a bead size that is related to a predominant prill size of said ammonium nitrate prills.   
     
     
         3 . An explosive composition, as claimed in  claim 1 , wherein:
 said expanded polymeric beads have a bead size that is at least 70% of a size in the range of a predominant prill mesh size.   
     
     
         4 . An explosive composition, as claimed in  claim 1 , wherein:
 said expanded polymeric beads have a bead size that is no more than about 200% of a size in the range of a predominant prill mesh size.   
     
     
         5 . An explosive composition, as claimed in  claim 1 , wherein:
 said expanded polymeric beads have a bead size that is related to an average prill size of said ammonium nitrate prills.   
     
     
         6 . An explosive composition, as claimed in  claim 1 , wherein:
 said expanded polymeric beads have a bead size that is at least 70% of an average prill size of said ammonium nitrate prills.   
     
     
         7 . An explosive composition, as claimed in  claim 1 , wherein:
 said expanded polymeric beads have a bead size that is no more than about 200% of an average size of said ammonium nitrate prills.   
     
     
         8 . An explosive composition, as claimed in  claim 1 , wherein:
 said ammonium nitrate prills are one of: fertilizer grade ammonium nitrate (“FGAN”) and commercial grade ammonium nitrate (“CGAN”).   
     
     
         9 . An explosive composition, as claimed in  claim 1 , wherein:
 said ammonium nitrate prills have a prill size in a range of 0.50-3.00 mm.   
     
     
         10 . An explosive composition, as claimed in  claim 1 , wherein:
 said ammonium nitrate prills have prill size in a range of 0.90-2.50 mm.   
     
     
         11 . An explosive composition, as claimed in  claim 1 , wherein:
 said water-in-oil emulsion explosive having a viscosity greater than 22,000 cP.   
     
     
         12 . An explosive composition, as claimed in  claim 1 , wherein:
 said water-in-oil emulsion explosive having a density greater than about 1.25 g/cc.   
     
     
         13 . An explosive composition, as claimed in  claim 1 , wherein:
 said water-in-oil emulsion explosive have a density greater than about 1.37 g/cc.   
     
     
         14 . An explosive composition, as claimed in  claim 1 , wherein:
 said water-in-oil emulsion explosive having a density greater than about 1.40 g/cc.   
     
     
         15 . An explosive composition, as claimed in  claim 1 , wherein:
 said water-in-oil emulsion explosive having a density in a range of 1.40-1.55 g/cc.   
     
     
         16 . An explosive composition, as claimed in  claim 1 , wherein:
 said explosive composition having a velocity of detonation in a range of 1600-3500 m/s in a 12.25″ blast hole.

Join the waitlist — get patent alerts

Track US2008185080A1 — get alerts on status changes and closely related new filings.

We store only your email — no account needed. See our privacy policy.