Method of lowering the density of ammonium nitrate-based mining explosives with expanded agricultural grain so that a density of 0.3g/cc to 1.0g/cc is achieved
US5409556A · kind A · utility
13Cited by
4References
29Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 8, 1994 |
| Grant date | Apr 25, 1995 |
| Priority date | — |
| Expiry date | Aug 8, 2014 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC06B31/30
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The density of ammonium nitrate-based mining explosives, such as ANFO, heavy ANFO and emulsion explosives, is lowered by adding an expanded grain, such as expanded popcorn, expanded rice, or expanded wheat, to the explosive. As much as 10% of the explosive composition may be an expanded grain. The present invention may be used with porous ammonium nitrate, dense agricultural grade ammonium nitrate, crystalline ammonium nitrate, and ground ammonium nitrate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.