High-low-temperature-resistant emulsion explosive and preparation method thereof

Abstract

The invention relates to a high and low temperature resistant emulsion explosive and a preparation method thereof, and belongs to the technical field of emulsion explosives. The technical problem to be solved by the invention is to provide the high and low temperature resistant emulsion explosive. The explosive is prepared from the following components in parts by weight: 93-94 parts of a water-phase material, 6-7 parts of an oil-phase material, 0.8-1.2 parts of expanded graphite and 0.3-0.6 part of a foaming agent, wherein the water-phase material consists of the following components in partsby weight: 76-85 parts of ammonium nitrate, 2-5 parts of sodium nitrate, 1-4 parts of sodium perchlorate, 1-4 parts of ammonium chloride, 0.8-1.2 parts of ethylene glycol, 0.8-1.2 parts of a surfactant and 9-12 parts of water; and a specific stabilizer is added into the oil phase material. Explosive, the explosive is high in explosive power, good in stability, good in safety and resistant to highand low temperature, can be repeatedly used for 30 times at the temperature of-20 DEG C to 45 DEG C, can reach the explosive speed of 3200 m / s or above within the validity period and reach the standard of No. 2 rock emulsion explosives, and is particularly suitable for high-temperature production and storage in summer and explosion in low-temperature and repeated high and low-temperature storageand use environments in winter.

Description

technical field [0001] The invention relates to high and low temperature resistant emulsified explosives and a preparation method thereof, belonging to the technical field of emulsified explosives. Background technique [0002] Emulsion explosive is a new type of industrial explosive developed from the 1970s to the end of the 1980s. Due to its unique physical structure, this kind of explosive has excellent water resistance, more complete explosion reaction, safe manufacture, transportation and use, and good mine blasting effect. [0003] However, when the existing emulsion explosives are used, there are often problems such as poor stability, especially when the explosive performance varies with the weather and the temperature fluctuates, the explosives are subjected to high and low temperature changes, the detonation sensitivity and detonation performance are reduced, and even the detonator is lost. Sensitivity, loss of explosive performance; in winter, especially in alpine...

AI Technical Summary

Problems solved by technology

[0003] However, when the existing emulsion explosives are used, there are often problems such as poor stability, especially when the explosive performance varies with the weather and the temperature fluctuates, the explosives are subjected to high and low temperature changes, the detonation sensitivity and detonation performance are reduced, and even the detonator is lost. Sensitivity, loss of explosive performance; in winter, especially in alpine regions, the temperature is very low, the explosive is frozen, ammonium acid crystallizes, demulsifies, and the explosive cannot be used normally

The first reason is the crystallization of nitric acid. The crystallized nitric acid is interlaced according to the crystal, which hinders the relative movement between the explosive particles. At the same time, the nitric acid increases according to the particle size and pierces the oil film. Solidified together, at low temperature, not only loses fluidity and plasticity, but also greatly reduces power and sensitivity; third, explosives are produced in August and September, the weather temperature is high, and in October and November, the weather temperature is low, noon High temperature, repeated changes like this, the explosive will decrease for a limited period of time, or even lose its explosive performance