Anfo explosive and manufacturing method thereof

Abstract

The invention provides anfo explosive with low explosion velocity and a manufacturing method thereof. The anfo explosive comprises 82 to 97 percent of crushed porous granular ammonium nitrate and 3 to 7 percent of fuel oil in terms of mass. A formulation of the anfo explosive is simple, high explosive and heavy metal or heavy metal oxides are not contained, and a production process is efficient, safe and environment-friendly. Moreover, the anfo explosive has wide density adjusting range and is easy to explode; the performance of the explosive is convenient to control, the adjusting method is more, and the adjusting range is large; and the raw material sources are wide, the production cost is low, and the method is suitable for industrialized production.

Description

technical field [0001] The invention relates to a low detonation velocity industrial explosive and a manufacturing method thereof, more specifically, to a low detonation velocity ammonium oil explosive and a manufacturing method thereof. Background technique [0002] Low detonation velocity explosives refer to a class of explosives with a lower limit detonation velocity, which are widely used in explosive welding (composite), smooth blasting, pre-splitting blasting, seismic survey and other fields. [0003] The basic principle of manufacturing low detonation velocity explosives is to add another kind of diluent which is compatible with it and generalized to reduce the detonation velocity. Diluents are heavy metals, heavy metal oxides, microporous substances, artificially inflated air bubbles, and even detonable components with lower detonation velocities. The low detonation velocity explosives currently in use can be roughly divided into two categories: [0004] 1. Heavy m...

AI Technical Summary

Problems solved by technology

The disadvantages are: the production process is complicated, the added heavy metal or heavy metal oxidant pollutes the environment, and the high explosive cost is high and the production safety is poor

Including: (1) Low-detonation velocity explosives modified from No. 2 rock powder ammonium ladder explosives. The disadvantage is that they contain toxic substance TNT, and the production of such explosives as industrial explosives has been banned in China; (2) Expanded ammonium nitrate explosives The low detonation velocity explosive prepared by adding diluent has the advantages of stable quality and environmental protection, and the disadvantages are high process requirements, large equipment investment, and high production cost; (3) the low detonation velocity explosive prepared by adding diluent to the modified ammonium oil explosive, its The advantage is low cost and simple production. The disadvantage is that the fineness of ordinary ammonium nitrate (non-porous granular ammonium nitrate) is very high. Usually, it needs to be crushed until the particle size is less than 0.1mm, and the product is easy to absorb moisture and agglomerate. The whole production process And each explosive component has strict requirements on water content, and a special drying and dehumidification process needs to be set up