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Ammonium Binitrate Fuel Oil and Custom Expanded Polymer Density Control Agent

一种敏感度、油包水的技术，应用在炸药领域，能够解决没有引爆等问题

Inactive Publication Date: 2016-08-24
HANWHA CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Mixtures of heavy ANFO and density reducers still do not detonate reliably in many cases

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0023] The explosive composition included ammonium nitrate fuel oil ("ANFO"), a water-in-oil emulsion explosive, and expanded polymer microspheres. The mixture of ANFO and water-in-oil emulsion explosives forms a heavy ANFO that resists water. The size of the polymeric microspheres is related in a certain manner to the size of the ammonium nitrate particles to produce an explosive composition with increased reliability.

[0024] The ANFO component of the composition includes ammonium nitrate particles and fuel oil. The ammonium nitrate particles comprise about 90-98% by weight of the ANFO component and the fuel oil comprises about 2-10% by weight of the ANFO component. In a preferred embodiment, the ammonium nitrate particles comprise about 94% by weight of the ANFO component and the fuel oil comprises about 6% by weight of the ANFO component. Usually, the fuel oil is No. 2 fuel oil. However, No. 1 fuel oils, mineral oils, other oils and combinations of oils known to those ...

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Abstract

The present invention relates to an explosive composition comprising heavy ANFO and expanded polymer microspheres having a density lower than the heavy ANFO. The size of the expanded polymer microspheres depends on or is based on the size of the ammonium nitrate particles used in the heavy ANFO portion of the composition. In one embodiment, the expanded polymer microspheres used in the composition have a size that is at least 70% of the lower limit of the mesh size of the primary ammonium nitrate particles. In another embodiment, the expanded polymer microspheres have a size that is at least 70% of the size associated with the average mesh size of the ammonium nitrate particles.

Description

[0001] This application is a divisional case of the invention patent application with the filing date of October 10, 2006, the application number of 200680037684.6 (PCT / IB2006 / 004313), and the title of "Heavy Ammonium Nitrate Fuel Oil and Customized Expanded Polymer Density Control Agent" Apply. technical field [0002] This invention relates to explosives and in particular to explosive compositions comprising ammonium nitrate fuel oil, ie heavy ANFO. Background technique [0003] Heavy ANFOs include ammonium nitrate-fuel oil (ANFO) and water-in-oil emulsion explosives. In many cases, a density reducing material is added to the heavy ANFO so that the mixture of heavy ANFO and density reducing material has a lower density than the heavy ANFO. Density reducing agents are required because heavy ANFO is too dense to detonate reliably. Substances added to heavy ANFO to adjust density include wood chips, sawdust, bagasse, polystyrene foam, etc. In many cases, mixtures of heavy ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C06B31/28C06B23/00C06B47/14
CPCC06B23/003C06B31/285C06B47/145C06B45/00C06B45/02
Inventor 凯文.H.沃尔多克
Owner HANWHA CORP