Water-containing porous granular ammonium nitrate fuel oil (ANFO) explosive

Abstract

For overcoming defects in the prior art, the invention provides a water-containing porous granular (ANFO) explosive, which is high in explosive power and is greatly reduced in quantity of generated toxic gas under the same conditions, so that pollution on atmospheric environment due to blasting operation can be reduced. For solving the technical problems, the water-containing porous granular ANFOexplosive includes porous granular ammonium nitrate, dimethylacetamide and water, wherein the porous granular ammonium nitrate is used as an oxidant, the dimethylacetamide is used as a combustible, and the water is used as a catalyst; the weight ratio of the porous granular ammonium nitrate is 94-95%, the weight ratio of the dimethylacetamide is 3.9-4.2% and the weight ratio of the water is 1.4-1.7%. The water-containing porous granular ANFO explosive can be widely applied to the field of explosion for civil use.

Description

technical field [0001] The invention discloses a water-containing porous granular ammonium oil explosive, which belongs to the technical field of civil blasting. Background technique [0002] Porous granular ammonium oil explosives is a new type of ammonium nitrate explosives. It has become the main type of industrial explosives in my country. It accounted for about 45% in 2016. my country produces about 2 million tons of porous granular ammonium oil explosives every year. The main components of porous granular ammonium oil explosives are ammonium nitrate (oxidizer) and fuel oil (combustible agent). In the actual production process, most of them are made by mixing porous granular ammonium nitrate and diesel oil on site under normal temperature and pressure. [0003] Due to the strong hygroscopicity of ammonium nitrate and the poor uniformity of mechanical stirring, the performance of porous granular ammonium oil explosives produced by most manufacturers is generally low, an...

AI Technical Summary

Problems solved by technology

[0003] Due to the strong hygroscopicity of ammonium nitrate and the poor uniformity of mechanical stirring, the performance of porous granular ammonium oil explosives produced by most manufacturers is generally low, and the content of nitrogen oxides after explosion is obviously high (commonly known as "yellow smoke")

Therefore, the national standard stipulates that the moisture content of porous granular ammonium oil explosives is not allowed to exceed 0.3%, because once the moisture content exceeds the limit standard, the performance indicators of explosives such as detonation velocity and intensity will drop significantly