Safe oxidant for firecrackers

An oxidant and firecracker technology, applied in the direction of explosives, etc., can solve the problems of firecracker shredding rate, unsatisfactory loudness, large pollution of toxic environment, large amount of single firecracker charge, etc., and reduce adverse effects on human body and environment. , The effect of reducing toxic and harmful components and easy to promote and use

Active Publication Date: 2009-12-30
HUNAN NANLING IND EXPLOSIVE MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this oxidant has the following disadvantages: its natural bulk density is relatively large, and the charge amount of a single firecracker is large, resulting in high overall cost for users; more barium nitrate is used in its components, and barium nitrate is a kind of heavy metal salt , the toxicity to the human body and the pollution to the environment are relatively large; the raw material - calcium carbonate is an inert substance and does not participate in chemical reactions. Therefore, the shredding rate and loudness of firecrackers made with this oxidant are not satisfactory

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Get the oxidant component: (weight kg / weight %) is expanded potassium nitrate 20kg (20%), organic coating agent 0.6kg (0.6%), modified potassium perchlorate 64.2kg (64.2%), magnesium nitrate 0.2kg (0.2%) %), barium nitrate 5kg (5%), catalyst 10kg (10%). Add expanded potassium nitrate and magnesium nitrate to the wheel mill and raise the temperature to 75-85°C, dry and crush, then add the melted organic coating agent (preheated to 75-85°C, melt and keep warm), and then roll , mix evenly, lower the temperature to below 45°C, put the material into a ball mill after discharging, then add modified potassium perchlorate, barium nitrate, catalyst and mix evenly.

Embodiment 2

[0017] Get the oxidant component: (weight kg / weight %) is expanded potassium nitrate 40kg (40%), organic coating agent 1.2kg (1.2%), modified potassium perchlorate 39.5kg (39.5%), magnesium nitrate 0.3kg (0.3 %), barium nitrate 8kg (8%), catalyst 11kg (11%). Add expanded potassium nitrate and magnesium nitrate to the wheel mill and raise the temperature to 75-85°C, dry and crush, then add the melted organic coating agent (preheated to 75-85°C, melt and keep warm), and then roll , mix evenly, lower the temperature to below 45°C, put the material into a ball mill after discharging, then add modified potassium perchlorate, barium nitrate, catalyst and mix evenly.

Embodiment 3

[0019] Get the oxidant component: (weight kg / weight %) is expanded potassium nitrate 35kg (35%), organic coating agent 1.0kg (1.0%), modified potassium perchlorate 41.6kg (41.6%), magnesium nitrate 0.4kg (0.4 %), barium nitrate 10kg (10%), catalyst 12kg (12%). Add expanded potassium nitrate and magnesium nitrate to the wheel mill and raise the temperature to 75-85°C, dry and crush, then add the melted organic coating agent (preheated to 75-85°C, melt and keep warm), and then roll , mix evenly, lower the temperature to below 45°C, put the material into a ball mill after discharging, then add modified potassium perchlorate, barium nitrate, catalyst and mix evenly.

[0020] The preparation of firecracker gunpowder composition:

[0021] Above-mentioned embodiment is made firecracker gunpowder according to formula oxidant: Al: S: perlite=1: 0.4: 0.4: 0.15. The friction sensitivity is: 20%-40%, the impact sensitivity is: 16%-32%, the moisture absorption rate is ≤0.3%, the sound le...

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PUM

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Abstract

A safe oxidant for firecrackers comprises the following components by weight percent: 20%-60% of puffed potassium nitrate, 0.5%-2% of organic encapsulant, 20%-65% of modified potassium perchlorate, 0.1%-2% of magnesium nitrate, 5%-15% of barium nitrate and 5%-15% of catalyst. The preparation method comprises the following steps: puffing potassium nitrate, coating the puffed potassium nitrate and magnesium nitrate with the organic encapsulant, adding the modified potassium perchlorate, barium nitrate and catalyst and obtaining the safe oxidant by mixing the mixture evenly. The oxidant has good safety and low cost, the various indexes of the oxidant meet the national standards, the stacking density is small, and the explosive load for each firecracker is small, thus greatly reducing the comprehensive cost for users and possessing large promotional value.

Description

technical field [0001] The invention relates to an oxidizing agent for making fireworks and firecracker gunpowder. Background technique [0002] For a long time, potassium chlorate has been used as the oxidant for making fireworks and firecrackers. Since potassium chlorate is mixed with sulfur and aluminum powder, the impact sensitivity and friction sensitivity are extremely high. If you do not pay attention during the production process, it will explode and catch fire, causing casualties. Therefore, the use of potassium chlorate as an oxidant for fireworks and firecrackers is prohibited nationwide. Most manufacturers now use potassium perchlorate as the oxidizing agent. Although the safety performance of potassium perchlorate is relatively high, the melting point of potassium perchlorate is relatively high, so it is difficult to ignite the firecrackers made of it, and the price is relatively high, which is difficult for many manufacturers to accept. Therefore, composite f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C06B33/14
Inventor 陈碧海王军冯亚明邓华
Owner HUNAN NANLING IND EXPLOSIVE MATERIAL CO LTD
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