Low detonation velocity powdery emulsifying explosive

Abstract

The invention relates to a powdery emulsion explosive with low detonation velocity. A rock powdery emulsion explosive, talcum powder and coarse bran are placed into a mixer for fullly stirring to ensure that the mixture is mixed evenly and then is packaged and sold, wherein the bulk density of the rock powdery emulsion explosive is between 0.58 and 0.62 / g.cm<-3>, the detonation velocity is between 3,500 and 3,700 / m.s<-1>, the brisance is between 15 and 17 / mm, the sympathetic detonation is between 9 and 11 / cm, the capacity for work is 360 / ml, and the storage period is 6 months; the bulk density of the talcum powder is between 0.95 and 1.0 / g.cm<-3>, and the grain diameter is 300 meshes; and the bulk density of the coarse bran is between 0.28 and 0.35 / g.cm<-3>, and the grain diameter is between 0.8 and 1mmr. In the invention, the powdery emulsion explosive with low detonation velocity is applied to double metal explosive welding first, which ensures the quality of explosive welding of double metal explosive composite welding and ensures that the double metal explosive welding fully meets the requirement. The powdery emulsion explosive is safe, also has no pollution after the explosion, and has no harm to the health of blasters. The storage period of the powdery emulsion explosive with low detonation velocity can reach more than 180 days, so the powdery emulsion explosive can be mixed by manufacturers without field mixed-making and the labor intensity of the blasters is reduced.

Description

technical field [0001] The invention relates to an explosive used in the welding technology of bimetallic explosive clad plates, specifically a low detonation velocity powdery emulsion explosive. Background technique [0002] The explosives used in the welding of bimetallic explosive clad plates are required to have a detonation velocity of 1900-2300m·s -1 Most of the low-detonation-velocity explosives are low-detonation-velocity explosives that are prepared on-site and have no storage period. At present, there is no explosive that is specially used for explosive welding. Before the No. 2 rock ammonium ladder explosive was eliminated, the addition of smoke suppressant and thinner to the No. 2 rock ammonium ladder explosive has always been the best welding agent for explosive composite plates. Ammonium ladder explosives have been eliminated now, and many people have done a lot of research recently to replace the ammonium ladder explosives. People mostly adopt the purpose of...

AI Technical Summary

Problems solved by technology

People mostly adopt the purpose of adding diluent in high explosive to achieve low detonation velocity; there are also people who use No. 2 water-resistant rock ammonium nitrate explosive without high explosive as the main body, and are equipped with corresponding flame suppressant and density regulator. The requirements of bimetallic explosive composite welding, but the current explosive welding medicine still has the following problems: (1) the explosive welding medicine component contains strong explosives, and the safety during use is poor

(2) The hygroscopicity of the additives in the explosive components makes the explosives have no storage period and needs to be mixed on site, which increases the labor intensity of the blasters

(3) Explosive welding chemicals are mixed by manual mixing, which may easily cause uneven mixing and lead to unstable detonation performance, resulting in unqualified bimetallic explosive welding composite