Sulfur-free shoot charge for fireworks and preparation method thereof

A technology of propellant and fireworks, which is applied in the direction of explosives, etc., can solve the problems of unstable performance of sulfur-free fireworks propellants, inability to industrialize production, high impact ignition rate, etc., and achieve the effects of avoiding the smell of sulfur dioxide, low cost, and reduced smoke

Inactive Publication Date: 2016-04-13
ZHONGXIANG FENGSHAN FIREWORK CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this invention has not been substantially used in production, mainly because according to the disclosed technology, the performance of the finally prepared sulfur-free fireworks propellant is extremely unstable, has moisture return, high impact ignition rate, and low ignition temperature
For example, its impact sensitivity is about 20% higher than that of military nitrates. It is precisely because of this that this invention has not been able to be industrialized in the industry, and even safety accidents have occurred.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Embodiment 1: Preparation of sulfur-free fireworks propellant

[0015] 1. Drug dispensing and drug mixing: Potassium perchlorate and potassium hydrogen terephthalate are used as main raw materials, supplemented with potassium nitrate, charcoal and phenolic resin, and the production quantity per portion is set according to the size of the granulation tank (generally 7-10 kg), According to the ratio of 60:30:5:4:1, mix and stir in the specified container until no white potassium perchlorate can be seen, then use a 100-140 mesh sieve to mix and sieve 3-5 times, must mix evenly, operate In the process, the "three light" and "four no" (handle, handle, and transport lightly, no dragging, pushing, rubbing, and bumping) are achieved, and the mixed medicine is sent to the next process cycle in time.

[0016] 2. Granulation: use 12% water equivalent to the mass of the drug and wet mix the drug, then use a 16-20 mesh sieve to wipe out the core and put it into the tank for granulat...

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PUM

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Abstract

The invention provides a sulfur-free shoot charge for fireworks and a preparation method thereof. The sulfur-free shoot charge for fireworks comprises potassium perchlorate, potassium hydrogen terephthalate, potassium nitrate, charcoal and phenolic resin in a mass ratio of (50-70) to (20-40) to (4-6) to (3-5) to (0.5-1.5), wherein the grain sizes of the raw materials are 200-300 mesh. The invention also provides the preparation method of the sulfur-free shoot charge for fireworks. Experiments prove that through determination under certain conditions, the product of the sulfur-free shoot charge for fireworks has friction sensitivity of 0-18%, impact sensitivity of 0, ignition temperature of 423 DEG C, moisture absorption ratio of 0.87% and good 48-hour thermal stability at 75 DEG C.

Description

technical field [0001] The invention relates to a pyrotechnic powder and a preparation method thereof, in particular to a sulfur-free fireworks propellant and a preparation method thereof. Background technique [0002] Military nitrate, commonly known as black gunpowder, is a pyrotechnic powder made of potassium nitrate as an oxidant, charcoal as a combustible, and sulfur as a reducing agent. Since the oxidant used is potassium nitrate, it is easy to absorb moisture; Sulfur dioxide is easy to pollute the air; at the same time, adding a large amount of charcoal ash will produce a large amount of smoke and dust after burning, and it is also easy to pollute the air; especially black powder is relatively high in sensitivity, and it is easy to catch fire during the production process. explosion occurs. Therefore, the production of black powder is quite dangerous, and major safety accidents have taken place both at home and abroad. It is urgent to develop a new type of fireworks ...

Claims

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Application Information

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IPC IPC(8): C06B31/10
CPCC06B31/10
Inventor 王道金
Owner ZHONGXIANG FENGSHAN FIREWORK CO LTD
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