Anti-desensitization type emulsion explosive and preparation method thereof

Abstract

The invention discloses an anti-desensitization emulsified explosive .The anti-desensitization emulsified explosive is prepared from a water-phase material, oil-phase materials and sensitizing agents; the oil-phase materials comprise compound wax, an anti-desensitization agent and an emulsifying agent, an aqueous solution of ammonium nitrate and sodium nitrate or an aqueous solution of ammonium nitrate and urea is adopted as the water-phase material, perlite and / or hollow glass microbeads are / is adopted as the physical sensitizing agent, the weight ratio of the water-phase material to the oil-phase materials is (93-94):(6-7), and the ratio of the weight of the chemical sensitizing agent to the total weight of the oil-phase materials and the water-phase material is (0.15-0.25):100 .The invention further discloses a preparation method of the anti-desensitization emulsified explosive .The anti-desensitization emulsified explosive can resist destruction of detonation waves and improve the system stability, foaming is conducted by adopting a medium and low temperature sensitizing technology in a low-temperature stable chemical and physical mode, therefore, losses of sensitizing bubbles in the production process are reduced, and it is guaranteed that a large quantity of stable detonating hotspots exist in an emulsified explosive body and the emulsified explosive has the good detonation property.

Description

technical field [0001] The invention relates to the technical field of emulsion explosives, in particular to an anti-desensitization type emulsion explosive and a preparation method thereof. Background technique [0002] Emulsion explosive refers to a kind of micro-droplets prepared by emulsification technology to make the oxidant salt aqueous solution uniformly dispersed in the oil phase continuous medium containing dispersed bubbles or hollow glass microspheres and other porous substances to form a kind of oil Water-in-water (W / O) latex-like aqueous industrial explosives. Emulsion explosives are a type of aqueous explosives. [0003] Emulsion explosives are new products developed in the 1970s. Emulsion explosives are usually composed of inorganic oxidant salt solution such as ammonium nitrate and oil-phase fuel components, and generally do not contain elemental explosives. According to the burning hot core (hot spot) theory when explosives detonate, the countless tiny b...

AI Technical Summary

Problems solved by technology

The pressure desensitization effect of emulsion explosives not only affects the blasting effect and construction progress, but also easily causes blind shots, accidents are prone to occur during the treatment process, and affects the safety of construction

If solid powdery explosives are used instead, the charge density cannot meet the requirements or the blasting effect will be affected due to water in the blast hole.

[0004] At present, the following problems exist in the application of emulsion explosives in engineering blasting: 1. Residues appear in emulsion explosives in the blast hole due to pressure desensitization, which even affects the blasting effect; The explosive density does not meet the requirements or the blasting effect is affected due to water in the blast hole