Viscous and granular anfo (ammonium nitrate and fuel oil) explosive and preparation method thereof

Abstract

The invention relates to a viscous and granular anfo (ammonium nitrate and fuel oil) explosive and a preparation method thereof. The explosive comprises the following raw material components in parts by weight: 93-96 parts of porous granulated ammonium nitrate, 4-7 parts of diesel oil, 0.15-0.25 part of powdered polyacrylamide, 4-6 parts of colloidal polyacrylamide and 4-7 parts of a waste emulsion explosive or an emulsion explosive matrix. The viscous and granular anfo explosive disclosed by the invention effectively uses the waste emulsion explosive or the emulsion explosive matrix, well solves the problems of safety treatment on the waste emulsion explosive or the emulsion explosive matrix, is simple in preparation process and convenient in production, and is convenient for large-scale production and application of blasting sites.

Description

technical field [0001] The invention relates to a viscous granular ammonium oil explosive and a preparation method, belonging to the technical field of industrial explosive preparation. Background technique [0002] In order to meet the needs of shallow hole or deep hole pneumatic mechanical charging, reduce the labor intensity of charging, reduce the amount of returned charge, and improve the utilization rate of the blast hole, people have developed a ladder sticky granular explosive. This kind of explosive is made of porous granular ammonium nitrate, diesel oil and viscous explosive agent. It has certain fluidity and suitable adhesiveness, and basically solves the problem of charge return in the charging process of pneumatic machinery. However, since the added viscous explosive contains 1 / 3 of TNT, it will inevitably cause harm to workers during production and use. In order to solve this problem, the Chinese patent documents "Leaderless Viscous Granular Explosive" (Applic...

AI Technical Summary

Problems solved by technology

However, since the added viscous explosive contains 1 / 3 of TNT, it will inevitably cause harm to workers during production and use.

In order to solve this problem, the Chinese patent documents "Leaderless Viscous Granular Explosive" (Application No.: 85100393), "New Ladderless Viscous Explosive and Its Manufacturing Method" (Application No.: 89107503.8), "A Kind of Ammonium Oil Explosive" (Application No. No.: 201210225182.3) etc. have disclosed their own ladder-free viscous explosive formula and preparation method, and its main idea is to use nontoxic methylamine nitrate as a sensitizer to replace the more toxic TNT, but methylamine nitrate as a sensitizer A simple explosive is extremely sensitive, the production process is complicated, and the process control requirements are high. It does not meet the requirements of low sensitivity and simple production of mixed explosives on site. There are great safety hazards in the process of production and use.

The addition of aluminum powder and sulfur in the patent document 89107503.8 brings greater dust, explosion and combustion risks during production, and the explosion products contain more sulfur dioxide to pollute the air

Chinese patent literature (application number: 200610010603.5) discloses a viscous granular explosive, which cancels the use of sensitive elemental explosives such as TNT and methylamine nitrate, greatly reduces the explosion and combustion hazard characteristics in the production process, but still uses calcium carbonate , talcum powder, hollow glass microspheres and other components that are prone to generate a lot of dust, 30% of the added solid powder is hollow glass microspheres with low density, which offsets the increase in density brought about by the addition of calcium carbonate and talc powder. Charge density has limited effect

[0003] At present, with the development and popularity of high-sensitization and high-temperature charging technology of emulsion explosives, most of the domestic emulsion explosive manufacturers have adopted high-temperature sensitization technology. High-temperature sensitization technology has brought large production capacity and high efficiency. A large number of emulsified waste drugs and substrates. Due to the frequent occurrence of safety accidents in the production of emulsion explosives from 2013 to 2014, the government authorities have banned the addition of waste materials generated during the charging process from the perspective of safety. Silo treatment brings certain difficulties to the current waste drug treatment

Images