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Smokeless gun propellant for fireworks and its prepn

A technology for medicaments and fireworks, which is applied to the preparation field of the above-mentioned propellant medicaments, can solve the problems of not finding propellant medicaments and dust pollution, and achieve the effects of reducing the amount of smoke generated, reducing the production cost and reducing the dust pollution.

Inactive Publication Date: 2004-09-08
中国北方化学工业总公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the black powder burns, it generates fine particles, which form smoke and cause dust pollution.
With the improvement of people's living standards and the continuous enhancement of environmental protection awareness, the requirements for environmental indicators such as smoke-free and residue-free fireworks and the safety of the production process are becoming more and more intense. Smoke-free, safe and environmentally friendly fireworks agents have become a research topic in the fireworks industry. The direction pursued by the researchers and the development direction of the fireworks industry, but no smokeless propellant has been found so far.

Method used

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  • Smokeless gun propellant for fireworks and its prepn

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Raw materials: 100kg in total, of which 70% are decommissioned single-base gunpowder, KNO 3 20%, Carbon 10%.

[0027] Preparation method: Soak the decommissioned single-base gunpowder in 4 times the weight of water, send it into a grinding mill with water, crush it into powder, and sieve it with 40 meshes. Put the sifted medicinal powder into a cloth bag, tie the mouth, centrifuge for 10 minutes, add KNO 3 aqueous solution and carbon, mix well. Dry before use to keep the moisture content below 5%.

Embodiment 2

[0029] Raw materials: 100kg in total, including 90% decommissioned double-base gunpowder, NH 4 ClO 4 9%, magnesium powder 1%.

[0030] The preparation method is the same as in Example 1.

Embodiment 3

[0032] Raw materials: 100kg in total, including 80% decommissioned single-base gunpowder, Sr(NO 3 ) 2 15%, aluminum powder 5%.

[0033] The preparation method is the same as in Example 1.

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Abstract

The smokeless gun propellant for fireworks consists of retired gunpowder 70-90 wt%, oxidant 5-10 wt% and inflammable 1-5 wt%. The oxidant is nitrate, chlorate or perchlorate; and the inflammable is carbon powder, aluminum powder, magnesium powder or aluminum-magnesium alloy powder. The preparation process includes crushing, dewatering, mixing, dispelling water and drying. The smokeless gun propellant is used in ground fireworks product to replace black powder as propellant agent, and this can reduce smoke produced during firing fireworks greatly, reduce dust pollution to environment and lower production cost. The present invention paves one way of utilizing retired gun powder resource in large scale.

Description

technical field [0001] The invention relates to a propellant for fireworks. [0002] The present invention also relates to the preparation method of the above-mentioned propellant. Background technique [0003] The disposal of military waste gunpowder is a long-standing problem. At present, there is no practical resource utilization method that can be processed in large quantities in the world. Therefore, such wastes still have to be disposed of by destruction. my country's "866 Project" has researched many effective ways of recycling, such as using waste medicine to prepare industrial explosives, using waste medicine to prepare nail gun medicine, using waste medicine for oil fracturing bombs, and using waste single-base medicine to make Oxalic acid and so on. Among these ways of utilization, except for the production of industrial explosives, other methods are characterized by high value-added products, even very high, but the processing capacity is very limited. The te...

Claims

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Application Information

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IPC IPC(8): C06B21/00C06B29/00C06B31/02F42B4/00
Inventor 刘玉海耿毅敏焦军来陈星
Owner 中国北方化学工业总公司
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