Gel type emulsion explosive and preparation thereof

Abstract

The invention discloses a gel-type emulsion explosive and a method for preparing the same. The explosive is prepared by 75%-86% of ammonium nitrate, 4%-7% of emulsifier-compound grease, 0.5%-4% of crystal modifier and water balance, different models of coal permissible products are prepared by adding 3%-7% of flame reducer into the explosive. When preparation, the ammonium nitrate, crystal modifier, water and flame reducer are mixed, heated and dissolved to form an oxidant water solution as an aqueous phase solution, the emulsifier-compound grease is heated to form a combustible agent solution as an oil phase solution, the aqueous phase solution and oil phase solution are pumped into an open type emulsifier for emulsification after accurate measurement and are sensitized to finished products in a low speed mixing device by means of a belt device. The explosive energy of the product can be released to a maximum extent, the density can reach 1.4g/cm<3>, the explosion strength can reach 360ml and the detonation velocity can reach 6500m/s.

Description

technical field [0001] The invention belongs to an explosive and a preparation method thereof, in particular to an emulsion explosive and a preparation method thereof. technical background [0002] Emulsion explosives are widely used in foreign developed countries and relatively early, but due to the particularity of mining methods, open-pit large-diameter blasting mining methods are mostly used, and the detonation sensitivity of emulsion explosives is low. Basically, it is a product without detonator sensitivity. Emulsion matrix The viscosity is low, suitable for pumping, most of them are canned on site, and the finished product is not packaged and shaped. Its advantages are safety and stability. Domestic emulsion explosives often use packaged products due to special geological conditions and specific mining methods. The products are required to have high detonation sensitivity and can be detonated stably by the No. 8 industrial detonator. Because there are many links betwe...

AI Technical Summary

Problems solved by technology

However, the emulsifiers and external phase materials used in domestic emulsion explosives are relatively single, and the products have many defects in blasting energy release, product form and processing technology. Due to the limitations of product functions and cost conditions, the emulsifiers currently used in emulsion explosives are mainly There are two types, one is the polymer dispersant T-152, T-155 and other products, the products produced by this kind of emulsifier have good stability, long storage time, good drug form, high hardness, convenient for product turnover and Users use it, but this type of product has the following two disadvantages: First, this type of dispersant itself does not have a comprehensive emulsifying function. To form a stable emulsion, some substances that promote emulsification and stability must be added. High shear force; second, the colloid formed by this type of dispersant has high hardness and poor toughness, which puts forward higher requirements for pharmaceutical and charging equipment