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Pyrotechnic composition oxidant

A technology of oxidant and pyrotechnic powder, which is applied to explosives and other directions, can solve the problems of high product reactivity, low price and cost, and cannot satisfy the safety of production process at the same time, and achieves the effects of low price, high safety and high reactivity.

Inactive Publication Date: 2014-06-25
NANJING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] To sum up, the problem existing in the prior art is that the material modification of barium nitrate, the pyrotechnic agent oxidant, cannot simultaneously meet the engineering application requirements of high production process safety, low price and cost, and high product reactivity.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] The formula of pyrotechnic powder safety oxidant is: modified barium nitrate: potassium perchlorate=0.6:0.4, mass ratio, the same below.

[0048] The production process of safe oxidant for pyrotechnic powder is as follows: ① Preparation of barium nitrate solution, ② Adding swelling agent to barium nitrate solution, ③ Evaporation and crystallization, ④ Drying and expansion, ⑤ Grinding and refining, ⑥ Preparation of active agent, ⑦ Blending of active agent , ⑧ mixed with potassium perchlorate.

[0049] The raw material for preparing barium nitrate solution is industrial barium nitrate.

[0050] The consumption of barium nitrate swelling agent is 5% of barium nitrate quality; The formula of swelling agent is: ammonium oxalate (NH 4 ) 2 C 2 o 4 75%, potassium oxalate K 2 C 2 o 4 10%, ferric ammonium oxalate (NH 4 ) 3 [Fe(C 2 o 4 ) 3 ] 10%, 5% of catalytic functional expansion agent; catalytic functional expansion agent is iron oxalate Fe 2 (C 2 o 4 ) 3 .

...

Embodiment 2

[0056] The formula of the pyrotechnic powder safety oxidant is: modified barium nitrate: potassium perchlorate=0.9:0.1.

[0057] The production process of safe oxidant for pyrotechnic powder is as follows: ① Preparation of barium nitrate solution, ② Adding swelling agent to barium nitrate solution, ③ Evaporation and crystallization, ④ Drying and expansion, ⑤ Grinding and refining, ⑥ Preparation of active agent, ⑦ Blending of active agent , ⑧ mixed with potassium perchlorate.

[0058] The raw materials for preparing barium nitrate solution are industrial nitric acid and industrial barium carbonate.

[0059] The consumption of barium nitrate swelling agent is 15% of barium nitrate quality; The formula of swelling agent is: ammonium oxalate (NH 4 ) 2 C 2 o 4 80%, potassium oxalate K 2 C 2 o 4 10%, ferric ammonium oxalate (NH 4 ) 3 [Fe(C 2 o 4 ) 3 ] 10%, catalytic functional expansion agent 0.

[0060] The operating temperature for drying and puffing is 450°C, and the...

Embodiment 3

[0065] The formula of the pyrotechnic powder safety oxidant is: modified barium nitrate: potassium perchlorate=0.7:0.3.

[0066] The production process of safe oxidant for pyrotechnic powder is as follows: ① Preparation of barium nitrate solution, ② Adding swelling agent to barium nitrate solution, ③ Evaporation and crystallization, ④ Drying and expansion, ⑤ Grinding and refining, ⑥ Preparation of active agent, ⑦ Blending of active agent , ⑧ mixed with potassium perchlorate.

[0067] The raw material for preparing barium nitrate solution is industrial barium nitrate.

[0068] The consumption of barium nitrate swelling agent is 10% of barium nitrate quality; The formula of swelling agent is: ammonium oxalate (NH 4 ) 2 C 2 o 4 80%, potassium oxalate K 2 C 2 o 4 5%, ferric ammonium oxalate (NH 4 ) 3 [Fe(C 2 o 4 ) 3 ]10%, catalytic functional expansion agent 5%; catalytic functional expansion agent is barium oxalate BaC 2 o 4 ﹑Copper oxalate CuC 2 o 4 equal mixture...

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Abstract

The invention discloses a safe pyrotechnic composition oxidant, including the following components in percentage by mass: 60-90% of modified barium nitrate and 40-10% of potassium perchlorate. The pyrotechnic composition oxidant disclosed by the invention is high in safety, large in reactivity and low in production cost, the performances thereof are approximate to those of potassium chlorate oxidant, such as ignition reliability, combustion stability, setting off effect and cost price and the like, so that the pyrotechnic composition oxidant can be used as a substitute product of the pyrotechnic composition oxidant potassium chlorate with high risk.

Description

technical field [0001] The invention belongs to the technical field of pyrotechnic raw materials, in particular to a low-cost, high-safety, high-reactivity pyrotechnic agent oxidant mainly composed of barium nitrate. Background technique [0002] As a substitute for potassium chlorate, a highly dangerous oxidant, barium nitrate has been widely used in the field of pyrotechnics because of its wide source, low price, and intrinsic safety. However, ordinary barium nitrate material has high melting point, high thermal decomposition heat absorption and high density. If the melting point is high, the initial temperature of thermal decomposition is high, and the combustion reaction of the agent needs to provide higher ignition energy stimulation, resulting in difficulty in ignition; when the thermal decomposition heat absorption is large, the overall reaction speed of the pyrotechnic agent is slow, and the transmission of the combustion state is unstable. The phenomenon of flameou...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C06B31/08
Inventor 陈昕曹传新
Owner NANJING UNIV OF SCI & TECH
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