Mixed explosive containing powder grains

Abstract

The invention discloses mixed explosive containing powder grains, in order to solve a problem of low detonation velocity and a problem that a detonator cannot be detonated in the prior art. The mixed explosive is prepared by comprising a component A, sodium thiosulfate and potassium dichromate, wherein the component A is prepared from the following components in percentage by weight: 6.5-7.5% of water, 0.5-1% of polyacrylamide, 5-10% of urea, 9-15% of ammonium nitrate, 3-7% of sodium nitrate and 60-70% of powder grains; quality of the sodium thiosulfate is 0.02-0.03% of content of the component A; and the quality of the potassium dichromate is 0.01-0.02% of the content of the component A. The mixed explosive is high in detonation velocity; the detonation velocity can be up to 6668m / s; the mixed explosive can be directly detonated by a detonator, and the mixed explosive is mainly used for rock mining, metal mining and the like.

Description

technical field [0001] The invention relates to a mixed explosive, in particular to a mixed explosive containing gunpowder particles, which is suitable for rock mining, metal mining and the like. Background technique [0002] There are a large number of decommissioned or discarded gunpowder every year in the world, and thousands of tons of explosives are decommissioned every year in China alone. Disposing of these spent or decommissioned gunpowder is cumbersome. The general treatment method is incineration, which costs a lot, pollutes the environment, and causes huge waste. [0003] Gunpowder is generally divided into single-base gunpowder (abbreviated as single-base gunpowder), double-base gunpowder (abbreviated as double-base gunpowder) and composite gunpowder. The main component of the single-base drug is nitrocellulose, and the mass percentage is generally more than 95%. The main components of the double base drug are nitrocellulose and nitroglycerin. The main compon...

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Problems solved by technology

[0004] "Development of Infusion Type Waste Propellant Gel Explosive", Wei Xiaoan, "Blasting Equipment", V30(3), 2001. Provided a kind of infused explosive utilizing waste propellant powder preparation, although its maximum detonation velocity is 6579m / s, However, according to "Experimental Research on the Detonation Performance of Waste Single-Based Drugs", Yang Huiqun. "Journal of Explosives and Explosives", V28 (2), 2005. The article introduces: various forms of civil explosives made of waste single-based propellants have no detonator sensitivity. , must use a booster to ensure its detonation, so the explosive cannot be detonated directly with a detonator

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