Emulsified gassing agents containing hydrogen peroxide and methods for their use
US5397399A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 22, 1994 |
| Grant date | Mar 14, 1995 |
| Priority date | — |
| Expiry date | Jun 22, 2014 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC06B23/002
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
An improved method of gassing and controlling the density of emulsion explosive compositions is provided. The emulsion explosive compositions of interest include an oxidizer salt, carbonaceous fuel, and an emulsifier. In addition, a catalyst, such as a salt or oxide of iron, copper, or manganese may be added to the explosive composition as a catalyst. The explosive composition is gassed by adding thereto a quantity of a second emulsion which includes an aqueous solution of hydrogen peroxide, a carbonaceous fuel, and an emulsifier. Oxygen gas bubbles are produced throughout the explosive composition by the degradation of the hydrogen peroxide, which may be catalyzed by the metal salt catalyst. The invention provides more uniform gas bubble distribution within the emulsion explosive composition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.